streamline-emr/docker/streamline-src/Modules/Investigations/Http/Controllers/InvestigationController.php

<?php

namespace Modules\Investigations\Http\Controllers;

use Carbon\Carbon;
use DateTime;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Spatie\Permission\Models\Role;
use Streamline\Http\Controllers\StreamlineSetupManager;
use Streamline\Models\Alert;
use Streamline\Models\Allergy;
use Streamline\Models\CardioEchoTemplate;
use Streamline\Models\ChartOfAccount;
use Streamline\Models\ChronicPatient;
use Streamline\Models\Diagnosis;
use Streamline\Models\DrugCategory;
use Streamline\Models\FamilyRelationship;
use Streamline\Models\HmisCategory;
use Streamline\Models\HmisCategoryOptions;
use Streamline\Models\HospitalInformation;
use Streamline\Models\InsuranceClaim;
use Streamline\Models\Investigation;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use Streamline\Models\InvestigationCategory;
use Streamline\Models\InvestigationSpecialisedResult;
use Streamline\Models\InvestigationSpecialisedVariable;
use Streamline\Models\LaboratorySpecimen;
use Streamline\Models\MaritalStatus;
use Streamline\Models\InvestigationNormalRange;
use Streamline\Models\ObstetricUltrasoundReports;
use Streamline\Models\Occupation;
use Streamline\Models\OrderedInvestigation;
use Streamline\Models\InvestigationResults;
use Streamline\Models\Consultation;
use Streamline\Models\Patient;
use Illuminate\Database\QueryException;
use Illuminate\Support\Facades\Session;
use Streamline\Models\PatientCategory;
use Streamline\Models\PatientDocument;
use Streamline\Models\PriceListCategories;
use Streamline\Models\StreamlineSetupStep;
use Streamline\Models\Supplier;
use Streamline\Models\UnitOfMeasure;
use Streamline\Models\User;
use Streamline\Models\CardioEchoResult;
use Barryvdh\Snappy\Facades\SnappyPdf;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use Streamline\Services\StreamlineSetupServiceInterface;

class InvestigationController extends Controller
{

    public function __construct(
        protected StreamlineSetupServiceInterface $setupService
    ) {

        $this->middleware('auth');
        $this->middleware('permission:investigations-list', ['only' => ['index']]);
        $this->middleware('permission:investigations-create', ['only' => ['create', 'store']]);
        $this->middleware('permission:investigations-edit', ['only' => ['edit', 'update', 'edit_all', 'update_all']]);
        $this->middleware('permission:investigations-delete', ['only' => ['destroy', 'inactive', 'activate']]);

        $this->middleware('permission:investigations-incoming', ['only' => ['incoming_labs']]);
        $this->middleware('permission:investigations-authenticate', ['only' => ['authenticate_labs', 'authenticate_investigations']]);
        $this->middleware('permission:investigation-results-list', ['only' => ['view_results']]);
        $this->middleware('permission:investigation-results-alter', ['only' => ['alter_results']]);
        $this->middleware('permission:investigations-historical-list', ['only' => ['historical_labs']]);

        /**
         * Imaging
         * */
        $this->middleware('permission:imaging-incoming-radiology', ['only' => ['imaging-incoming-radiology']]);
        $this->middleware('permission:imaging-incoming-ultrasound', ['only' => ['imaging-incoming-ultrasound']]);
        $this->middleware('permission:imaging-incoming-ultrasound-obstetric', ['only' => ['imaging-incoming-ultrasound-obstetric']]);
        $this->middleware('permission:imaging-radiology-results', ['only' => ['imaging-radiology-results']]);
        $this->middleware('permission:imaging-ultrasound-results', ['only' => ['imaging-incoming-ultrasound']]);
        $this->middleware('permission:imaging-ultrasound-obstetric-results', ['only' => ['imaging-incoming-ultrasound-obstetric']]);
        $this->middleware('permission:imaging-alter-investigation-results', ['only' => ['alter_results_others']]);
        $this->middleware('permission:imaging-view-historical-results', ['only' => ['imaging_historical_results']]);
        $this->middleware('permission:cancel-investigation-order', ['only' => ['investigations_to_cancel', 'destroy_ordered_investigations']]);
        $this->middleware('permission:restore-cancelled-investigation-order', ['only' => ['view_deleted_ordered_invetigations', 'restore_deleted_ordered_invetigations']]);
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $investigations = Investigation::orderBy('name', 'asc')->paginate(1000);
        $ordered_investigations_array = [];
        $ordered_investigations = OrderedInvestigation::distinct('investigation_id')->get(['investigation_id']);
        foreach ($ordered_investigations as $ordered_investigation) {
            $actual = explode(',', $ordered_investigation->investigation_id);
            foreach ($actual as $value) $ordered_investigations_array[] = $value;
        }
        $ordered_investigations_ids = array_unique($ordered_investigations_array);
        $investigation_categories = InvestigationCategory::orderBy('name', 'asc')->pluck('name', 'id');

        $chart_of_accounts = ChartOfAccount::orderBy('name', 'asc')->pluck('name', 'id');
        $inpatient_hmis_categories = HmisCategory::where('section_number', 5)->select('title', 'id', 'number', 'type', 'section_number')->get()->toArray();
        $hmis_categories = DB::table('hmis_categories')->where('type', 0)->pluck('title', 'id')->toArray();

        return view('investigations::investigations.index', compact('investigations', 'investigation_categories', 'chart_of_accounts', 'hmis_categories', 'ordered_investigations_ids', 'inpatient_hmis_categories'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        $suppliers = Supplier::orderBy('name', 'asc')->pluck('name', 'id');

        $investigation_categories = InvestigationCategory::orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $investigation_categories = ['' => '- select -'] + $investigation_categories;

        $chart_of_accounts = ChartOfAccount::where('type', 1)->orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $chart_of_accounts = ['' => '- select -'] + $chart_of_accounts;

        $unit_of_measure = UnitOfMeasure::orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $unit_of_measure = ['' => '- select -'] + $unit_of_measure;

        $investigations = StreamlineSetupManager::get_investigations_array();

        $hmis_categories = DB::table('hmis_categories')->where('type', 0)->pluck('title', 'id')->toArray();
        $inpatient_hmis_categories = HmisCategory::where('section_number', 5)->select('title', 'id', 'number', 'type', 'section_number')->get()->toArray();
        // $inpatient_hmis_category_options = DB::table('hmis_category_options')->where('hmis_category_id', $investigation->hmis_category_inpatient)->get()->toArray();

        $hmis_categories = ['' => '- select -'] + $hmis_categories;

        return view('investigations::investigations.create', compact('suppliers', 'investigation_categories', 'inpatient_hmis_categories', 'chart_of_accounts', 'unit_of_measure', 'investigations', 'hmis_categories'));
    }

    /**
     * Store a newly created resource in storage.
     *
     */
    public function store(Request $request)
    {
        //if it for streamline setup then you can skip the request validation
        if (session()->has('streamline_setup')) {
            //skip validation
        } else {
            request()->validate([
                'name' => 'required|unique:investigations',
                'category' => 'required',
                'units' => 'required',
                'available' => 'required',
                'account_id' => 'required',
                'echo' => 'required_if:category,17',
                'reference_text'=>'nullable|required_with:reference_link',
                'reference_link'=>'nullable|url|required_with:reference_text'
                
            ],
            [
                    'name.required' => 'The investigation name is required.',
                    'name.unique' => 'This investigation name already exists. Please choose a different name.',
                    'category.required' => 'Please select a category for the investigation.',
                    'units.required' => 'The units field is required.',
                    'available.required' => 'Please specify whether the investigation is available.',
                    'account_id.required' => 'The account ID is required.',
                    'echo.required_if' => 'An echo is required when the category is set to 17.',
                    'reference_text.required_with' => 'The reference text is required when a reference link is provided.',
                    'reference_link.required_with' => 'The reference link is required when reference text is provided.',
                    'reference_link.url' => 'The reference link must be a valid URL.'
                
            ]);
        }

        if (isset($request->skip)) {
            //Artisan::call('db:seed', ['--class' => 'InvestigationSeeder']);
            //update the streamline setup table with the new finished step
            $this->setupService->saveStep("investigations registration", 1);

            //flash("Default system investigations have been added")->success();
            return redirect("drugs/create");
        } else {
            // get all current price lists
            $price_list = PriceListCategories::withTrashed()->select('id')->get();
            $price_list_category = [];
            $price_list_price = [];

            foreach ($price_list as $record) {
                array_push($price_list_category, $record->id);
                array_push($price_list_price, $request->non_insured_price);
            }

            $logged_in_user_id = Auth::user()->id;
            $investigation = new Investigation;

            $investigation->name = $request->name;
            $investigation->code = $request->code;
            $investigation->category = $request->category;
            $investigation->units = $request->units;
            $investigation->minimum = $request->minimum;
            $investigation->sample_container = $request->sample_container;
            $investigation->insurance_coverage = 0;
            $investigation->comments = $request->comments;
            $investigation->normal_ranges = $request->normal_ranges;
            $investigation->lab_time = $request->lab_time;
            $investigation->hmis_002_slug = $request->hmis_002_slug;
            $investigation->non_insured_price = $request->non_insured_price;
            $investigation->insured_price = 0;
            /*$investigation->price_list_category = implode(",", $price_list_category);
            $investigation->price_list_price = implode(",", $price_list_price);*/
            $investigation->price_list_category = !is_null($request->price_list_category_id) ? implode(",", $request->price_list_category_id) : null;
            $investigation->price_list_price = !is_null($request->price_list_price) ? implode(",", $request->price_list_price) : null;
            $investigation->account_id = $request->account_id;
            /* == hmis stuff ===== */
            $investigation->hmis_no_outpatient = is_null($request->hmis_no_outpatient) ? null : implode(",", $request->hmis_no_outpatient);
            $investigation->hmis_category = is_null($request->hmis_category) ? null : implode(",", $request->hmis_category);
            $investigation->hmis_no_inpatient = $request->hmis_no_inpatient;
            $investigation->hmis_category_inpatient = $request->hmis_category_inpatient;
            /* =================== */
            $investigation->available = $request->available;
            $investigation->slug = !empty($request->echo) ? 'echo' : null;
            $investigation->range_type = is_null($request->range_type) ? 0 : $request->range_type;
            $investigation->is_chronic = $request->is_chronic;
            $investigation->reference_text = $request->reference_text;
            $investigation->reference_link = $request->reference_link;
            $investigation->created_by = $logged_in_user_id;
            $investigation->updated_by = $logged_in_user_id;
            if ($investigation->name != "" && !is_null($investigation->name)) {
                $investigation->save();

                if ($request->range_type == 1) {
                    $age_id = $request->age_id;
                    $dynamic_range_male = $request->dynamic_range_male;
                    $dynamic_range_female = $request->dynamic_range_female;

                    for ($x = 0; $x < count($age_id); $x++) {
                        $new_range = new InvestigationNormalRange;
                        $new_range->male_range = $dynamic_range_male[$x];
                        $new_range->female_range = $dynamic_range_female[$x];
                        $new_range->age_group_id = $age_id[$x];
                        $new_range->test_id = $investigation->id;
                        $new_range->created_by = $logged_in_user_id;
                        $new_range->save();
                    }
                }
            }

            try {

                flash($request->name . " Investigation has been saved")->success();
                if (session()->has('streamline_setup')) {

                    if (isset($request->selected_investigations)) {
                        $selected_investigations_array = $request->selected_investigations;
                        if (!empty($selected_investigations_array)) {

                            for ($i = 0; $i < count($selected_investigations_array); $i++) {
                                /* try this magic to get details for the selected service */
                                $investigations_array = StreamlineSetupManager::get_investigations_array();
                                $key = array_search($selected_investigations_array[$i], array_column($investigations_array, 'name'));
                                $inv_details = $investigations_array[$key];
                                /* end of magic trial */
                                $default_investigation = new Investigation;
                                $default_investigation->name = $inv_details['name'];
                                $default_investigation->category = $inv_details['category'];
                                $default_investigation->insured_price = 0;
                                $default_investigation->non_insured_price = 0;
                                $default_investigation->account_id = $inv_details['account_id'];
                                $default_investigation->save();
                            }
                        }
                    }
                    //update the streamline setup table with the new finished step
                    $this->setupService->saveStep("investigations registration", 1);
                    return redirect("drugs/create");
                }
                return redirect("/investigations/");
            } catch (QueryException $e) {
                flash($request->name . " Investigation already exists!")->error();
                return back()->withInput();
            }
        }
    }

    /**
     * Display the specified resource.
     *
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        $investigation = Investigation::where(['id' => $id])->first();

        $investigation_categories = InvestigationCategory::orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $chart_of_accounts = ChartOfAccount::where('type', 1)->orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $chart_of_accounts = ['' => '- select -'] + $chart_of_accounts;

        $hmis_categories_opd = DB::table('hmis_categories')->where('type', 0)->pluck('title', 'id')->toArray();
        $hmis_categories_opd = ['' => '- select -'] + $hmis_categories_opd;

        $hmis_categories_ip = DB::table('hmis_categories')->where('type', 1)->pluck('title', 'id')->toArray();
        $hmis_categories_ip = ['' => '- select -'] + $hmis_categories_ip;

        $unit_of_measure = UnitOfMeasure::orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $unit_of_measure = ['' => '- select -'] + $unit_of_measure;
        $inpatient_hmis_categories = HmisCategory::where('section_number', 5)->select('title', 'id', 'number', 'type', 'section_number')->get()->toArray();
        $inpatient_hmis_category_options = HmisCategoryOptions::where('hmis_category_id', $investigation->hmis_category_inpatient)->get()->toArray();
        if (!$investigation) {
            flash()->error("There is no such investigation");
            return redirect('/investigations/');
        } else {
            return view('investigations::investigations.edit', compact('investigation', 'chart_of_accounts', 'inpatient_hmis_categories', 'investigation_categories', 'hmis_categories_opd', 'hmis_categories_ip', 'inpatient_hmis_category_options', 'unit_of_measure'));
        }
    }

    /**
     * Update the specified resource in storage.
     *
     * @param \Illuminate\Http\Request $request
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        request()->validate([
            'name' => 'required',
            'category' => 'required',
            'available' => 'required',
            'account_id' => 'required',
            'echo' => 'required_if:category,17',
            'reference_text' => 'nullable|required_with:reference_link',
            'reference_link' => 'nullable|url|required_with:reference_text'
        ],
        [
                'name.required' => 'The investigation name is required.',
                'name.unique' => 'This investigation name already exists. Please choose a different name.',
                'category.required' => 'Please select a category for the investigation.',
                'units.required' => 'The units field is required.',
                'available.required' => 'Please specify whether the investigation is available.',
                'account_id.required' => 'The account ID is required.',
                'echo.required_if' => 'An echo is required when the category is set to 17.',
                'reference_text.required_with' => 'The reference text is required when a reference link is provided.',
                'reference_link.required_with' => 'The reference link is required when reference text is provided.',
                'reference_link.url' => 'The reference link must be a valid URL.'
            
        ]);

        $logged_in_user_id = Auth::user()->id;

        $investigation = Investigation::find($id);
        $investigation->name = $request->name;
        $investigation->code = $request->code;
        $investigation->category = $request->category;
        $investigation->normal_ranges = $request->normal_ranges;
        $investigation->units = $request->units;
        $investigation->minimum = $request->minimum;
        $investigation->sample_container = $request->sample_container;
        $investigation->non_insured_price = $request->non_insured_price;
        $investigation->price_list_category = !is_null($request->price_list_category_id) ? implode(",", $request->price_list_category_id) : null;
        $investigation->price_list_price = !is_null($request->price_list_price) ? implode(",", $request->price_list_price) : null;
        $investigation->insured_price = 0;
        $investigation->comments = $request->comments;
        $investigation->lab_time = $request->lab_time;
        $investigation->hmis_002_slug = $request->hmis_002_slug;
        $investigation->insurance_coverage = 0;
        $investigation->available = $request->available;
        $investigation->slug = !empty($request->echo) ? 'echo' : null;
        $investigation->account_id = $request->account_id;
        $investigation->range_type = $request->range_type;
        $investigation->is_chronic = $request->is_chronic;
        $investigation->reference_text = $request->reference_text;
        $investigation->reference_link = $request->reference_link;
        /* == hmis stuff ===== */
        $investigation->hmis_no_outpatient = implode(",", $request->hmis_no_outpatient);
        $investigation->hmis_category = implode(",", $request->hmis_category_opd);
        $investigation->hmis_no_inpatient = $request->hmis_no_inpatient;
        $investigation->hmis_category_inpatient = $request->hmis_category_inpatient;
        /* =================== */

        $investigation->updated_by = $logged_in_user_id;


        if ($request->sub_tests) {
            $investigation->type = 1;
            $sub_test_array = $request->sub_tests;
            for ($i = 0; $i < count($sub_test_array); $i++) {
                $variable = new InvestigationSpecialisedVariable;
                $variable->name = get_name($sub_test_array[$i], 'id', 'name', 'investigation_specialised_variables');
                $variable->investigation_id = $id;
                $variable->units = get_name($sub_test_array[$i], 'id', 'units', 'investigation_specialised_variables');
                $variable->normal_ranges = get_name($sub_test_array[$i], 'id', 'normal_ranges', 'investigation_specialised_variables');
                $variable->flags = get_name($sub_test_array[$i], 'id', 'flags', 'investigation_specialised_variables');
                $variable->created_by = $logged_in_user_id;
                $variable->updated_by = $logged_in_user_id;

                $investigation = Investigation::find($request->investigation);
                $investigation->type = 1;

                try {
                    $variable->save();
                    flash('successfully attached subtest to investigation.')->success();
                } catch (QueryException $e) {
                    flash('failed to attached subtest to investigation.')->error();
                }
            }
        }

        try {
            $investigation->save();

            if ($request->range_type == 1) {
                $age_id = $request->age_id;
                $dynamic_range_male = $request->dynamic_range_male;
                $dynamic_range_female = $request->dynamic_range_female;

                for ($x = 0; $x < count($age_id); $x++) {

                    $dynamic_normal_range = DB::table('investigations_normal_ranges')
                        ->where('age_group_id', $age_id[$x])
                        ->where('test_id', $investigation->id)
                        ->first();

                    if (!$dynamic_normal_range) {
                        $dynamic_normal_range = new InvestigationNormalRange;
                        $dynamic_normal_range->created_by = $logged_in_user_id;
                    } else {
                        $dynamic_normal_range = InvestigationNormalRange::find($dynamic_normal_range->id);
                        $dynamic_normal_range->updated_by = $logged_in_user_id;
                    }

                    $dynamic_normal_range->female_range = $dynamic_range_female[$x];
                    $dynamic_normal_range->male_range = $dynamic_range_male[$x];
                    $dynamic_normal_range->age_group_id = $age_id[$x];
                    $dynamic_normal_range->test_id = $investigation->id;
                    $dynamic_normal_range->save();
                }
            }

            flash($request->name . " Investigation has been updated")->success();
            return redirect("/investigations/");
        } catch (QueryException $e) {
            flash("An error occurred")->error();
            return back()->withInput();
        }
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        $investigation = Investigation::find($id);

        if ($investigation->delete()):
            flash("Investigation has been deleted.")->success();
            return redirect('/investigations/');
        endif;
    }

    /**
     * Display a listing of the inactive resource(s).
     *
     * @return \Illuminate\Http\Response
     */
    public function inactive()
    {
        $investigations = Investigation::onlyTrashed()->orderBy('name', 'asc')->paginate(50);

        $investigation_categories = InvestigationCategory::orderBy('name', 'asc')->pluck('name', 'id');

        $chart_of_accounts = ChartOfAccount::orderBy('name', 'asc')->pluck('name', 'id');

        if (empty($investigations)) {
            flash()->error("There is no inactive investigation");
            return redirect('/investigations/');
        } else {
            return view('investigations::investigations.inactive', compact('investigations', 'investigation_categories', 'chart_of_accounts'));
        }
    }

    /**
     * Activate the specified resource in storage.
     *
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function activate($id)
    {
        $investigation = Investigation::withTrashed()->find($id);

        if ($investigation->restore()):
            flash("Investigation has been activated.")->success();
            return redirect('/investigations/inactive');
        endif;
    }

    /**
     * Display a listing of the active resources for bulk editing.
     *
     * @return \Illuminate\Http\Response
     */
    public function edit_all()
    {
        $investigations = Investigation::orderBy('name', 'asc')->get();

        $investigation_categories = InvestigationCategory::orderBy('name', 'asc')->pluck('name', 'id')->toArray();

        $investigation_categories = ['' => '- select -'] + $investigation_categories;

        $chart_of_accounts = ChartOfAccount::where('type', 1)->orderBy('name', 'asc')->pluck('name', 'id');

        if (count($investigations) < 1) {
            flash()->error("There is no active investigation");
            return redirect('/investigations/');
        } else {
            return view('investigations::investigations.edit.all', compact('investigations', 'chart_of_accounts', 'investigation_categories'));
        }
    }

    /**
     * Display a listing of the active resources for editing HMIS Options
     *
     * @return \Illuminate\Http\Response
     */
    public function edit_hmis_options()
    {
        $investigations = Investigation::orderBy('name', 'asc')->get();

        $investigation_categories = InvestigationCategory::orderBy('name', 'asc')->pluck('name', 'id')->toArray();
        $investigation_categories = ['' => '- select -'] + $investigation_categories;

        $hmis_categories = DB::table('hmis_categories')->where('type', 0)->pluck('title', 'id')->toArray();
        $hmis_categories = ['' => '- select -'] + $hmis_categories;
        $category_ids = [];
        $hmis_categories_ip = DB::table('hmis_categories')->where('type', 1)->pluck('title', 'id')->toArray();
        $hmis_categories_ip = ['' => '- select -'] + $hmis_categories_ip;
        $inpatient_hmis_categories = HmisCategory::where('section_number', 5)->select('title', 'id', 'number', 'type', 'section_number')->get()->toArray();
        foreach ($inpatient_hmis_categories as $inpatient_hmis_category) $category_ids[] = $inpatient_hmis_category['id'];
        $inpatient_hmis_category_options = HmisCategoryOptions::whereIn('hmis_category_id', $category_ids)->get()->toArray();

        if (count($investigations) < 1) {
            flash()->error("There is no active investigation");
            return redirect('/investigations/');
        } else {
            return view('investigations::investigations.edit.hmis-options', compact('investigations',  'investigation_categories', 'hmis_categories', 'inpatient_hmis_category_options', 'inpatient_hmis_categories', 'hmis_categories_ip'));
        }
    }

    /**
     * Update all the resources in storage.
     *
     * @param \Illuminate\Http\Request $request
     * @return \Illuminate\Http\Response
     */
    public function update_all(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'name' => 'required',
            'available' => 'required',
            'account_id' => 'required'
        ]);

        if ($validator->fails()) {
            $string = "";
            foreach ($validator->errors()->getMessages() as $item) {
                $string .= "{$item[0]}<br>";
            }
            //            flash($string)->error();
            return back()->withErrors($validator)->withInput();
        } else {
            $logged_in_user_id = Auth::user()->id;

            $id_array = $request->id;

            $name_array = $request->name;
            $category_array = $request->category;
            $normal_ranges_array = $request->normal_ranges;
            $minimum_array = $request->minimum;
            $sample_container_array = $request->sample_container;
            $non_insured_price_array = $request->non_insured_price;
            $comments_array = $request->comments;
            $lab_time_array = $request->lab_time;
            $available_array = $request->available;
            $account_id_array = $request->account_id;

            for ($x = 0; $x < count($id_array); $x++):
                $investigation = Investigation::find($id_array[$x]);

                $investigation->name = $name_array[$x];
                $investigation->category = $category_array[$x];
                $investigation->normal_ranges = $normal_ranges_array[$x];
                $investigation->minimum = $minimum_array[$x];
                $investigation->sample_container = $sample_container_array[$x];
                $investigation->non_insured_price = $non_insured_price_array[$x];
                $investigation->insured_price = 0;
                $investigation->comments = $comments_array[$x];
                $investigation->lab_time = $lab_time_array[$x];
                $investigation->insurance_coverage = 0;
                $investigation->available = $available_array[$x];
                $investigation->account_id = $account_id_array[$x];
                $investigation->updated_by = $logged_in_user_id;

                try {
                    $investigation->save();
                } catch (QueryException $e) {
                    flash("An error occurred")->error();
                    return back()->withInput();
                }
            endfor;

            flash("Investigations have been updated")->success();
            return redirect("/investigations/");
        }
    }

    public function update_hmis_options(Request $request)
    {

        $logged_in_user_id = Auth::user()->id;

        $id_array = $request->id;

        $name_array = $request->name;
        /* == hmis stuff ===== */
        $hmis_no_outpatient_array = $request->hmis_no_outpatient;
        $hmis_category_outpatient_array = $request->hmis_category;
        $hmis_no_inpatient_array = $request->hmis_no_inpatient;
        $hmis_category_inpatient_array = $request->hmis_category_inpatient;
        /* =================== */

        for ($x = 0; $x < count($id_array); $x++):
            $investigation = Investigation::find($id_array[$x]);

            $investigation->name = $name_array[$x];
            /* == hmis stuff ===== */
            $investigation->hmis_no_outpatient = $hmis_no_outpatient_array[$x];
            $investigation->hmis_category = $hmis_category_outpatient_array[$x];
            $investigation->hmis_no_inpatient = $hmis_no_inpatient_array[$x];
            $investigation->hmis_category_inpatient = $hmis_category_inpatient_array[$x];
            /* =================== */
            $investigation->updated_by = $logged_in_user_id;

            try {
                $investigation->save();
            } catch (QueryException $e) {
                flash("An error occurred")->error();
                return back()->withInput();
            }
        endfor;

        flash("Investigations have been updated")->success();
        return redirect("/investigations/edit/hmis-options");
    }

    public function investigations_review()
    {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');

        $patient = Patient::find($patient_id);

        $investigations_select_code = "<option value=''>-select-</option>";
        $investigations_to_order = [];

        $categories = DB::table('investigation_categories')->whereNull('deleted_at')->get()->toArray();

        foreach ($categories as $category) {
            $investigations = DB::table('investigations')->whereNull('deleted_at')->where('category', '=', $category->id)->where('available', 1)->orderBy('name', 'asc')->get(['id', 'name']);

            if (count($investigations) > 0) {
                $investigations_select_code .= "<optgroup label='" . $category->name . "'>";

                foreach ($investigations as $investigation) {
                    $investigations_to_order[$investigation->id] = $investigation->name;
                    $investigations_select_code .= "<option value='" . $investigation->id . "'>" . $investigation->name . "</option>";
                }

                $investigations_select_code .= "</optgroup>";
            }
        }

        $ordered_investigations = OrderedInvestigation::where('patient_id', '=', $patient_id)
            ->where('episode_id', $episode_id)
            ->where('investigation_status', '0')
            ->where('request_received', '0')
            ->where('payment_status', '0')
            ->where('inpatient_bill_generated', '0')
            ->get();

        // collect chronic drug ids as array
        $chronic_array = ChronicPatient::where('patient_id', $patient_id)->whereNotNull('investigation_id')->get(['investigation_id']);
        $investigations = DB::table('investigations')->whereNull('deleted_at')->where('available', 1)->pluck('name', 'id');

        return view('investigations::investigations.investigations_review', compact('patient', 'investigations_select_code', 'patient_id', 'ordered_investigations', 'investigations_to_order', 'chronic_array', 'investigations', 'episode_id'));
    }

    public function get_investigation_details(Request $request)
    {
        $patient_id = $request->patient_id;
        $patient_insurance_status = $request->patient_insurance_status ?? 0;

        $investigation = DB::table('investigations')->find($request->investigation_id);

        if (is_numeric($patient_insurance_status) && $patient_insurance_status == 1 && $patient_id != 0 && is_numeric($patient_id)) {
            $selling_price = get_item_insurance_co_payment($patient_id, $investigation->id, 3, false, 0);
        } else {
            // check if the patient category is attached to a price list
            $price_list_id = is_patient_category_attached_to_price_list($patient_id);
            if ($price_list_id) {
                $selling_price = get_price_list_category_price($price_list_id, 2, $investigation->id);
            } else {
                $selling_price = $investigation->non_insured_price;
            }
        }

        if (is_chi_enabled() && is_patient_item_covered($patient_id, $investigation->id, 3)) {
            $covered_by_chi = '&nbsp;&nbsp;<br><span style="color: darkgreen"><b>Covered by CHI</b></span>';
        } else {
            $covered_by_chi = "";
        }

        return json_encode([
            "comments" => $investigation->comments,
            "selling_price" => $selling_price,
            "covered_by_chi" => $covered_by_chi,
        ]);
    }

    /**
     * Submit investigation orders.
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function submit_ordered_investigations(Request $request)
    {

        if (is_null($request->investigations_id) || is_null($request->investigations_id[0])) {
            flash("No investigation has been selected")->error();
            return back()->withInput();
        }

        $is_inpatient = session()->get('ward_investigation');
        $inpatient = (isset($is_inpatient)) ? 1 : 0;

        // unset the session for ward investigation
        session()->forget('ward_investigation');

        $investigation_ids = $request->investigations_id;
        $order_comments_array = $request->order_comments;
        $eye_array = $request->eye;
        $urgent_ids = $request->urgent_id ?? [];
        $patient_id = $request->patient_id;
        $episode_id = $request->episode_id;
        $investigation_codes_array = [];
        $investigation_names_array = [];
        $bc_sales_invoice_lines = [];

        $investigations_array = [
            "Lab" => ["ids" => [], "comments" => [], "urgent" => [], "eye" => [], "order_id" => 0],
            "Imaging" => ["ids" => [], "comments" => [], "urgent" => [], "eye" => [], "order_id" => 0],
            "Ultrasound" => ["ids" => [], "comments" => [], "urgent" => [], "eye" => [], "order_id" => 0],
            "Ultrasound_Obstetric" => ["ids" => [], "comments" => [], "urgent" => [], "eye" => [], "order_id" => 0],
            "Cardio" => ["ids" => [], "comments" => [], "urgent" => [], "eye" => [], "order_id" => 0]
        ];

        $update_order_ids = $request->order_id;

        if (isset($update_order_ids)) {
            foreach ($update_order_ids as $update_order_id) {
                $original_order_type = get_name($update_order_id, 'id', 'order_type', 'ordered_investigations');
                $payment_status = get_name($update_order_id, 'id', 'payment_status', 'ordered_investigations');

                if (array_key_exists($original_order_type, $investigations_array) && $payment_status != 1) {
                    $investigations_array[$original_order_type]["order_id"] = $update_order_id;
                }
            }
        }

        // iterate over the ordered investigations and divide them into categories
        for ($i = 0; $i < count($investigation_ids); $i++) {
            $inv_order_type = get_name(get_name($investigation_ids[$i], "id", "category", "investigations"), "id", "super_category_id", "investigation_categories");
            $investigation_details = Investigation::find($investigation_ids[$i]);
            $investigation_codes_array[] = $investigation_details->code;
            $investigation_names_array[] = $investigation_details->name;
            $bc_sales_invoice_lines[] = [
                "invoiceDocType" => "Invoice",
                "lineType" => "resource",
                "lineObjectNumber" => $investigation_details->code,
                "description" => $investigation_details->name
            ];

            if ($inv_order_type == 1) {
                $order_type_name = "Lab";
            } elseif ($inv_order_type == 2) {
                $order_type_name = "Imaging";
            } elseif ($inv_order_type == 3) {
                $order_type_name = "Ultrasound";
            } elseif ($inv_order_type == 4) {
                $order_type_name = "Ultrasound_Obstetric";
            } elseif ($inv_order_type == 5) {
                $order_type_name = "Cardio";
            } else {
                $order_type_name = "None";
            }

            $investigations_array[$order_type_name]["ids"][] = $investigation_ids[$i];
            $investigations_array[$order_type_name]["comments"][] = $order_comments_array[$i];
            $investigations_array[$order_type_name]["eye"][] = $eye_array[$i];

            if (in_array($investigation_ids[$i], $urgent_ids)) {
                $investigations_array[$order_type_name]["urgent"][] = $investigation_ids[$i];
            }

            if (is_investigation_chronic($investigation_ids[$i])) {
                register_chronic_investigation($patient_id, $episode_id, $investigation_ids[$i]);
            }
        }

        $logged_in_user_id = Auth::user()->id;

        // iterate through the investigation array and place all orders in the respective table
        foreach ($investigations_array as $order_type => $order_ids) {
            if ($order_ids["order_id"] == 0) {
                if (count($order_ids["ids"]) > 0) {
                    //create new order investigation
                    $order = new OrderedInvestigation;

                    $order->investigation_id = implode(",", $order_ids["ids"]);
                    $order->patient_id = $patient_id;
                    $order->episode_id = $episode_id;
                    $order->urgent = !empty($order_ids["urgent"]) ? 1 : 0;
                    $order->urgent_ids = implode(",", $order_ids["urgent"]);
                    $order->inpatient = $inpatient;
                    $order->for_inpatient = implode(",", array_fill(0, count($order_ids["ids"]), $inpatient));
                    $order->order_type = $order_type;
                    $order->eye = implode(",", $order_ids["eye"]);
                    $order->order_comments = implode(",", $order_ids["comments"]);
                    $order->created_by = $logged_in_user_id;

                    $order->save();

                    // create an insurance claim for the ordered items
                    if ($request->patient_insurance_status == 1) {
                        generate_insurance_claim($order->id, 3);
                    }
                }
            } else {
                if (count($order_ids["ids"]) > 0) {
                    //update the ordered investigations
                    $order = OrderedInvestigation::find($order_ids["order_id"]);

                    // these are the investigations already recorded in the database
                    $current_investigation_ids_array = explode(",", $order->investigation_id);
                    $current_for_inpatient_array = explode(",", $order->for_inpatient);

                    $for_inpatient_array = [];

                    for ($i = 0; $i < count($order_ids["ids"]); $i++) {

                        /**
                         * We are now updating the order, we have to run through the
                         * for_inpatient column and make sure we keep them as they are
                         * for the current ones and the new ones assign them the
                         * current inpatient status
                         */
                        if (in_array($order_ids["ids"][$i], $current_investigation_ids_array)) {
                            $for_inpatient_array[] = $current_for_inpatient_array[array_search($order_ids["ids"][$i], $current_investigation_ids_array)];
                        } else {
                            $for_inpatient_array[] = $inpatient;
                        }
                    }

                    $order->investigation_id = implode(",", $order_ids["ids"]);
                    $order->patient_id = $patient_id;
                    $order->episode_id = $episode_id;
                    $order->eye = implode(",", $order_ids["eye"]);
                    $order->urgent = !empty($order_ids["urgent"]) ? 1 : 0;
                    $order->urgent_ids = implode(",", $order_ids["urgent"]);
                    $order->inpatient = $inpatient;
                    $order->for_inpatient = implode(",", $for_inpatient_array);
                    $order->order_type = $order_type;
                    $order->order_comments = implode(",", $order_ids["comments"]);
                    $order->updated_by = $logged_in_user_id;

                    $order->save();

                    // create an insurance claim for the ordered items
                    if ($request->patient_insurance_status == 1 && $inpatient == 0) {
                        generate_insurance_claim($order->id, 3);
                    }
                } else {
                    // this means that the order was previously made but was removed so delete
                    OrderedInvestigation::where('id', $order_ids["order_id"])->forceDelete();
                }
            }
        }

        flash("Ordered Investigation Added Successfully")->success();

        /* start of talking to Business Central API for billing */
        if (is_api_usage_enabled()) {
            $patient_number = get_name($patient_id, "id", "number", "patients");
            $patient_category_id = get_name($patient_id, "id", "category_id", "patients");
            $patient_category_code = get_name($patient_category_id, "id", "code", "patient_categories");
            $sales_header_url = "192.168.200.11:7048/BC240/api/hrpsolutions/lacorintegration/v2.0/salesinvoices";
            $sales_invoice_lines_url = "192.168.200.11:7048/BC240/api/hrpsolutions/lacorintegration/v2.0/salesinvoicesLines";
            $new_invoice_url = 'http://192.168.200.11:7048/BC240/api/hrpsolutions/lacorintegration/v2.0/salesInvoices?$expand=salesInvoicesLines';

            $header_payload = [
                //"data" => $request->all(),
                "invoiceDate" => "2026-01-24", //Carbon::now()->format('Y-m-d'),//day that the transaction happened
                "postingDate" => "2026-01-24", //Carbon::now()->format('Y-m-d'),//day that invoice is send to Navision
                "invoiceDocType" => "Invoice",
                "customerNumber" => $patient_number,
                "billToCustomerNumber" => "50000", //$patient_category_id == 1 ? $patient_number : $patient_category_code,
                "invoiceDepartment" => "SALES",
                "invoiceCostcenter" => ""
            ];

            $new_payload = [
                "invoiceDocType" => "Invoice",
                "customerNumber" => $patient_number,
                "salesInvoicesLines" => $bc_sales_invoice_lines
            ];

            try {

                $new_sales_invoice_data = Http::timeout(120)->withBasicAuth(env('API_USERNAME'), env('API_PASSWORD'))->withHeaders([
                    'accept' => '*/*',
                ])->post($new_invoice_url, $new_payload)->json();

                if ($new_sales_invoice_data && $new_sales_invoice_data['number']) {
                    $returned_invoice_no = $new_sales_invoice_data['number'];
                    flash("Invoice Number " . $returned_invoice_no . " created in Business Central")->success();
                } else {
                    // Handle the error if the API request fails
                    return response()->json(['error' => 'Failed to fetch data from the sales lines API endpoint'], 500);
                }
            } catch (\Exception $e) {
                Log::error($e->getMessage());
                return response()->json([
                    'success' => false,
                    'error' => $e->getMessage()
                ]);
            }
        }
        /* end of talking to the Business Central API */

        /* redirect to consultation or patient_episode page depending on where the user is from */
        if ($request->get('submit_button') == 'print_request') {
            session()->put('investigation_ids', $investigation_ids);
            session()->put('urgent_ids', $urgent_ids);
            session()->put('order_comments', $order_comments_array);
            return redirect('/investigations/print_request/0');
        }

        if ($inpatient == 1) {
            return redirect('in_patient_sheet');
        } else {
            if (session()->has('redirect_to_consultation')) {
                $url = session()->get('redirect_to_consultation');
                session()->forget('redirect_to_consultation');
                return redirect($url);
            } elseif (session()->has('anc_visit_redirect')) {
                $url = session()->get('anc_visit_redirect');
                session()->forget('anc_visit_redirect');
                return redirect($url);
            } else {
                if (session()->has('previous_action') && session()->get('previous_action') == 'anc_consultation_page') {
                    session()->forget('previous_action');
                    return redirect("ante_natal_clinic/route");
                } else return redirect("/patient_episodes");
            }
        }
    }

    public function print_request($id)
    {
        if ($id == 0) {
            if (session()->has("investigation_ids")) {
                $patient_id = session()->get('patient_id');
                $patient = Patient::find($patient_id);

                $ordered_investigation = OrderedInvestigation::where('patient_id', '=', session()->get('patient_id'))
                    ->where('episode_id', session()->get('episode_id'))
                    ->where('investigation_status', '0')
                    ->where('request_received', '0')
                    ->where('payment_status', '0')
                    ->where('inpatient_bill_generated', '0')
                    ->first();

                $investigation_ids_array = session()->get("investigation_ids");
                $urgent_ids_array = session()->get("urgent_ids");
                $order_comments_array = session()->get("order_comments");

                session()->forget('investigation_ids');
                session()->forget('urgent_ids');
                session()->forget('order_comments');
            } else {
                return redirect('home');
            }
        } else {
            $ordered_investigation = OrderedInvestigation::find($id);

            $investigation_ids_array = explode(",", $ordered_investigation->investigation_id);
            $urgent_ids_array = explode(",", $ordered_investigation->urgent_ids);
            $order_comments_array = explode(",", $ordered_investigation->order_comments);
            $patient_id = $ordered_investigation->patient_id;
            $patient = Patient::find($ordered_investigation->patient_id);
        }

        // get unique category_ids
        $category_ids_array = [];
        $category_array = [];

        for ($x = 0; $x < count($investigation_ids_array); $x++) {
            $category_id = get_name($investigation_ids_array[$x], "id", "category", "investigations");

            if (!array_key_exists($category_id, $category_array)) {
                $category_ids_array[] = $category_id;
            }

            $category_array[$category_id][] = [
                'id' => $investigation_ids_array[$x],
                'comment' => $order_comments_array[$x]
            ];
        }

        $hospital_information = HospitalInformation::first();

        return view('investigations::investigations.print_request', compact('ordered_investigation', 'hospital_information', 'patient', 'category_ids_array', 'category_array', 'urgent_ids_array'));
    }

    /**
     * Gets all the incoming investigation request lab
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function incoming_labs(Request $request)
    {
        $search_text = "";

        // if patient id is active, get all records regardless of date; else search by date
        if (isset($request->patient_id) && $request->patient_id != 0) {
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";

            $incomings = OrderedInvestigation::where(['investigation_status' => 0])
                ->where('request_received', 0)
                ->where('order_type', 'Lab')
                ->where('patient_id', $request->patient_id)
                ->orderBy('id', 'desc')
                ->get(['id', 'payment_status', 'inpatient', 'episode_id', 'patient_id', 'created_at']);

            $urgent_incomings = OrderedInvestigation::where(['investigation_status' => 0])
                ->where(['request_received' => 0])
                ->where('order_type', '=', 'Lab')->where('urgent_ids', '<>', '')
                ->where('patient_id', $request->patient_id)
                ->orderBy('id', 'desc')
                ->get();
        } else {
            switch ($request->search_date_by) {
                case 'yesterday':
                    $end_date = Carbon::yesterday()->endOfDay();
                    $start_date = Carbon::yesterday()->startOfDay();
                    $search_text .= "Yesterday ";
                    break;
                case 'custom_date':
                    $end_date = Carbon::parse($request->start_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " ";
                    break;
                case 'custom_date_range':
                    $end_date = Carbon::parse($request->end_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " to " . streamline_date($end_date) . " ";
                    break;
                case 'today':
                default:
                    $end_date = Carbon::today()->endOfDay();
                    $start_date = Carbon::today()->startOfDay();
                    $search_text .= "Today ";
                    break;
            }

            //by default load the last 24 hours
            $incomings = OrderedInvestigation::where(['investigation_status' => 0])
                ->where(['request_received' => 0])
                ->where('order_type', '=', 'Lab')->where('urgent_ids', '=', '')
                ->whereBetween('created_at', [$start_date, $end_date])
                ->orderBy('id', 'desc')
                ->get();
            $urgent_incomings = OrderedInvestigation::where(['investigation_status' => 0])
                ->where(['request_received' => 0])
                ->where('order_type', '=', 'Lab')->where('urgent_ids', '<>', '')
                ->whereBetween('created_at', [$start_date, $end_date])
                ->orderBy('id', 'desc')
                ->get();
        }

        $specimen = LaboratorySpecimen::orderBy('name', 'asc')->pluck('name', 'id')->toArray();
        $specimen = ['' => '- select -'] + $specimen;

        return view('investigations::investigations.incoming_labs', compact('incomings', 'specimen', 'search_text', 'urgent_incomings'));
    }

    public function incoming_imaging($imaging_type, Request $request)
    {
        $search_text = "";
        $filters = [];

        // if patient id is active, get all records regardless of date; else search by date
        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['ordered_investigations.patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        } else {
            switch ($request->search_date_by) {
                case 'yesterday':
                    $end_date = Carbon::yesterday()->endOfDay();
                    $start_date = Carbon::yesterday()->startOfDay();
                    $search_text .= "Yesterday ";
                    break;
                case 'custom_date':
                    $end_date = Carbon::parse($request->start_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " ";
                    break;
                case 'custom_date_range':
                    $end_date = Carbon::parse($request->end_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " to " . streamline_date($end_date) . " ";
                    break;
                case 'today':
                default:
                    $end_date = Carbon::today()->endOfDay();
                    $start_date = Carbon::today()->startOfDay();
                    $search_text .= "Today ";
                    break;
            }

            $filters[] = ['ordered_investigations.created_at', '>', $start_date];
            $filters[] = ['ordered_investigations.created_at', '<', $end_date];
        }

        $incomings = OrderedInvestigation::where(['investigation_status' => 0])
            ->leftJoin('patients', 'ordered_investigations.patient_id', '=', 'patients.id')
            ->where('ordered_investigations.order_type', '=', $imaging_type)->where('urgent_ids', '=', '')
            ->where($filters)
            ->orderBy('ordered_investigations.id', 'desc')
            ->select('ordered_investigations.*', 'patients.number as patient_number', 'patients.category_id as patients_category_id')
            ->limit(200)
            ->get();

        $urgent_incomings = OrderedInvestigation::where(['investigation_status' => 0])
            ->leftJoin('patients', 'ordered_investigations.patient_id', '=', 'patients.id')
            ->where('ordered_investigations.order_type', '=', $imaging_type)->where('urgent_ids', '<>', '')
            ->where($filters)
            ->orderBy('ordered_investigations.id', 'desc')
            ->select('ordered_investigations.*', 'patients.number as patient_number', 'patients.category_id as patients_category_id')
            ->limit(200)
            ->get();

        $results = OrderedInvestigation::where(['investigation_status' => 1])
            ->leftJoin('patients', 'ordered_investigations.patient_id', '=', 'patients.id')
            ->leftJoin('investigation_results', 'investigation_results.order_id', '=', 'ordered_investigations.id')
            ->where('ordered_investigations.order_type', '=', $imaging_type)
            ->where($filters)
            ->orderBy('ordered_investigations.id', 'desc')
            ->select(
                'ordered_investigations.*',
                'investigation_results.created_at as results_created_at',
                'patients.number as patient_number',
                'patients.category_id as patients_category_id',
                'investigation_results.id as results_id',
                'investigation_results.value as results_value'
            )
            ->limit(200)
            ->get();

        $patient_categories = DB::table('patient_categories')->where('available', 1)->pluck('name', 'id');

        return view('investigations::investigations.incoming_imaging', compact('incomings', 'search_text', 'imaging_type', 'results', 'patient_categories', 'urgent_incomings'));
    }

    /**
     * View incoming labs request details
     *
     * @return \Illuminate\Http\Response
     */
    public function ordered_results(Request $request)
    {
        $patient_id = $request->patient_id;
        $episode_id = $request->episode_id;

        // get all investigations that have specialised variables attached
        $investigations_with_specialised_variables = DB::table('investigation_specialised_variables')
            ->whereNull('deleted_at')
            ->groupBy('investigation_id')
            ->pluck('investigation_id')
            ->toArray();

        // declared variables needed for the top panes
        $patient = Patient::where(['id' => $patient_id])->first();
        $categories = DB::table('patient_categories')->where('available', 1)->pluck("name", "id");
        $marital_statuses = DB::table('marital_statuses')->pluck("name", "id");
        $known_patient_allergies = Allergy::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_alerts = Alert::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $drug_categories_array = DB::table('drug_categories')->pluck('name', 'id');
        $drug_categories = DB::table('drug_categories')->get();
        // end of needed variables for the panes

        $order_type = $request->order_type;
        $order_id = $request->order_id;
        $primary_diagnosis = 'N/A';
        $other_diagnoses[0]['other'] = "N/A";
        $results_count = 0;
        $count = 0;
        $results = [];

        //check if results already exist
        $investigation_results = InvestigationResults::where('patient_id', '=', $patient_id)
            ->where('episode_id', '=', $episode_id)
            ->where('result_type', '=', $order_type)
            ->where('order_id', '=', $order_id)
            ->first();

        if ($investigation_results) {
            // check if updated
            if ($investigation_results->updated_by) {
                $doctor_id = $investigation_results->updated_by;
            } else {
                $doctor_id = $investigation_results->created_by;
            }

            $investigation_ids = explode(",", $investigation_results->investigation_id);
            $investigation_value = explode(",", $investigation_results->value);
            $comments_array = explode(",", $investigation_results->comment);
            $ordered_investigation_comments_string = "";
            $ordered_investigation_comments_string = $investigation_results->order_comments;
            $ordered_investigations_comments_explode = explode(",", $ordered_investigation_comments_string);
            $results_comments_counter = 0;

            foreach ($investigation_ids as $investigation_id) {

                $inv_row = Investigation::where('id', '=', $investigation_id)->withTrashed()->first();
                if ($inv_row) {
                    $result_document = PatientDocument::where([['patient_id', $patient_id], ['episode_id', $episode_id], ['investigation_result_id', $investigation_results->id],  ['investigation_id', $investigation_id]])->first();
                    $results[$count]['id'] = $inv_row->id;
                    $results[$count]['name'] = $inv_row->name;
                    $results[$count]['insured'] = $inv_row->insurance_coverage;
                    $results[$count]['normal_range'] = ($inv_row->range_type == 1) ? get_dynamic_normal_range($inv_row->id, get_patient_age_group($patient_id), get_name($patient_id, 'id', 'gender', 'patients')) : $inv_row->normal_ranges;
                    $results[$count]['units'] = $inv_row->units;
                    $results[$count]['slug'] = $inv_row->slug;
                    $results[$count]['document'] = $result_document->id ?? null;
                    $results[$count]['title'] = $result_document->title ?? null;
                    $results[$count]['value'] = isset($investigation_value[$count]) ? $investigation_value[$count] : "";
                    $results[$count]['comment'] = isset($comments_array[$count]) ? $comments_array[$count] : "";
                    $results[$count]['order_comments'] = isset($ordered_investigations_comments_explode[$results_comments_counter]) ? $ordered_investigations_comments_explode[$results_comments_counter] : "";
                    $results[$count]['investigation_specialised_results_id'] = 0;

                    // check if investigation has specialised variables
                    if (in_array($investigation_id, $investigations_with_specialised_variables)) {
                        // get the specialised results and check if it is valid
                        if (isset($investigation_value[$count])) {
                            $specialised_results = InvestigationSpecialisedResult::find($investigation_value[$count]);

                            if ($specialised_results) {
                                // store the id for updating later
                                $results[$count]['investigation_specialised_results_id'] = $investigation_value[$count];

                                // for this one, the specialised_variable_ids are the keys and the comments or values are the, well, the values
                                $results[$count]['value'] = array_combine(explode(",", $specialised_results->specialised_variable_id), explode(",", $specialised_results->value));
                                $results[$count]['comment'] = array_combine(explode(",", $specialised_results->specialised_variable_id), explode(",", $specialised_results->comment));
                            } else {
                                $results[$count]['value'] = "";
                                $results[$count]['comment'] = "";
                            }
                        }
                    }

                    $count++;
                    $results_comments_counter++;
                }
            }

            $results_count = count($results);
        } else {
            $ordered_results = OrderedInvestigation::where('id', '=', $order_id)->first();

            //check if updated
            if ($ordered_results->updated_by) {
                $doctor_id = $ordered_results->updated_by;
            } else {
                $doctor_id = $ordered_results->created_by;
            }

            $investigation_ids = explode(",", $ordered_results->investigation_id);
            $eyes =  explode(",", $ordered_results->eye);
            //ordered results with order comment
            $ordered_investigation_comments_string = "";
            $ordered_investigation_comments_string = $ordered_results->order_comments;
            $ordered_investigations_comments_explode = explode(",", $ordered_investigation_comments_string);
            $results_comments_counter = 0;

            foreach ($investigation_ids as $investigation_id) {

                $inv_row = Investigation::where('id', '=', $investigation_id)->first();
                if ($inv_row) {
                    $results[$count]['id'] = $inv_row->id;
                    $results[$count]['name'] = $inv_row->name;
                    $results[$count]['insured'] = $inv_row->insurance_coverage;
                    $results[$count]['normal_range'] = ($inv_row->range_type == 1) ? get_dynamic_normal_range($inv_row->id, get_patient_age_group($patient_id), get_name($patient_id, 'id', 'gender', 'patients')) : $inv_row->normal_ranges;
                    $results[$count]['units'] = $inv_row->units;
                    $results[$count]['slug'] = $inv_row->slug;
                    $results[$count]['investigation_specialised_results_id'] = 0;
                    $results[$count]['value'] = '';
                    $results[$count]['comment'] = '';
                    $results[$count]['eye'] = isset($eyes[$results_comments_counter]) ? $eyes[$results_comments_counter] : '';
                    $results[$count]['order_comments'] = isset($ordered_investigations_comments_explode[$results_comments_counter]) ? $ordered_investigations_comments_explode[$results_comments_counter] : "";
                    $count++;
                    $results_comments_counter++;
                }
            }
        }

        //get the diagnosis
        $consul = Consultation::where('patient_id', '=', $patient_id)->where('episode_id', '=', $episode_id)->first();

        if ($consul) {
            if ($consul->primary_diagnosis) {
                $primary_diagnosis = get_name($consul->primary_diagnosis, 'id', 'name', 'diagnoses');
            } else {
                $primary_diagnosis = 'N/A';
            }

            $other_diagnoses = [];
            $temp_count = 0;

            if ($consul->other_diagnoses) {
                $temp_array = unserialize($consul->other_diagnoses);
                foreach ($temp_array as $value) {
                    $other_diagnoses[$temp_count]['other'] = get_name($value, 'id', 'name', 'diagnoses');
                    $temp_count++;
                }
            } else {
                $other_diagnoses[$temp_count]['other'] = "N/A";
            }
        }

        $doctor_name = get_name($doctor_id, 'id', 'first_name', 'users') . " " . get_name($doctor_id, 'id', 'last_name', 'users');
        $doctor_phone = get_name($doctor_id, 'id', 'phone', 'users');
        $consultation_details = Consultation::where('patient_id', '=', $patient_id)->where('episode_id', '=', $episode_id)->first();

        $cardioEcho = CardioEchoResult::where('episode_id', $episode_id)->first();

        $templates = CardioEchoTemplate::pluck('name', 'id')->toArray();
        $templates = [0 => '- select template -'] + $templates;

        return view('investigations::investigations.ordered_results', compact('cardioEcho', 'order_type', 'order_id', 'patient_id', 'episode_id', 'results', 'results_count', 'other_diagnoses', 'primary_diagnosis', 'doctor_phone', 'doctor_name', 'consultation_details', 'patient', 'categories', 'known_patient_allergies', 'known_patient_alerts', 'drug_categories_array', 'marital_statuses', 'drug_categories', 'investigations_with_specialised_variables', 'templates'));
    }

    /**
     * Save incoming labs request details
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function save_ordered_results(Request $request)
    {
        // get all investigations that have specialised variables attached
        $investigations_with_specialised_variables = DB::table('investigation_specialised_variables')
            ->whereNull('deleted_at')
            ->groupBy('investigation_id')
            ->pluck('investigation_id')
            ->toArray();

        $order_type = $request->order_type;
        $order_id = $request->order_id;
        $id = $request->id;

        // Replacing the commas the incoming value and comments with full colons
        $value = $request->value;
        $comment = $request->comment;
        $specialized_id_array = $request->specialized_id;
        $specialized_value_array = $request->specialized_value;
        $specialized_comment_array = $request->specialized_comment;
        $investigation_specialised_results_id_array = $request->investigation_specialised_results_id;
        $lab_result_document_array = $request->lab_result_document;

        $patient_id = $request->patient_id;
        $episode_id = $request->episode_id;

        $investigation_ids = "";
        $investigation_results = "";
        $comments = "";
        $per_investigation = "";
        $per_investigation_array = [];
        $investigation_ids_array = [];

        $logged_in_user_id = Auth::user()->id;

        for ($i = 0; $i < count($id); $i++) {
            // check if this investigation is a specialized one
            if (in_array($id[$i], $investigations_with_specialised_variables)) {
                // get all the specialised variables available to it
                $specialized_variables = DB::table('investigation_specialised_variables')->whereNull('deleted_at')->where('investigation_id', $id[$i])->orderBy('ranking', 'asc')->get();

                $current_ids_array = [];
                $current_values_array = [];
                $current_comments_array = [];

                // loop through the variables, finding out if any is coming from the form,
                // because the specialized_id_array may contain multiple variables for multiple investigations
                // so we need a way of picking the right ones.
                foreach ($specialized_variables as $variable) {
                    $key = array_search($variable->id, $specialized_id_array);

                    if (is_integer($key)) {
                        $current_ids_array[] = $specialized_id_array[$key];
                        // clean up the values and comments for storing
                        $current_values_array[] = str_replace(',', ';', $specialized_value_array[$key]);
                        $current_comments_array[] = str_replace(',', ';', $specialized_comment_array[$key]);
                    }
                }

                // check using the investigation_specialised_results_id array if this is an update
                if ($investigation_specialised_results_id_array[$i] != 0 && InvestigationSpecialisedResult::find($investigation_specialised_results_id_array[$i])) {
                    $investigation_specialised_results = InvestigationSpecialisedResult::find($investigation_specialised_results_id_array[$i]);
                } else {
                    $investigation_specialised_results = new InvestigationSpecialisedResult();
                }

                $investigation_specialised_results->specialised_variable_id = implode(',', $current_ids_array);
                $investigation_specialised_results->value = implode(',', $current_values_array);
                $investigation_specialised_results->comment = implode(',', $current_comments_array);
                $investigation_specialised_results->created_by = $logged_in_user_id;
                $investigation_specialised_results->updated_by = $logged_in_user_id;
                $investigation_specialised_results->save();

                $value[$i] = $investigation_specialised_results->id;
                $comment[$i] = "-";
            }

            if ($i == (count($id) - 1)) {
                $investigation_ids .= $id[$i];
                $investigation_ids_array[] = $id[$i];
                $investigation_results .= str_replace(',', ';', $value[$i]);
                $comments .= str_replace(',', ';', $comment[$i]);
                $per_investigation .= "0";
            } else {
                $investigation_ids .= $id[$i] . ",";
                $investigation_ids_array[] = $id[$i];
                $investigation_results .= str_replace(',', ';', $value[$i]) . ",";
                $comments .= str_replace(',', ';', $comment[$i]) . ",";
                $per_investigation .= "0,";
            }
        }

        //check if is inpatient
        $inpatient = get_name($order_id, "id", "inpatient", "ordered_investigations");

        //check if results already exist
        $invest_results = InvestigationResults::where('patient_id', '=', $patient_id)
            ->where('episode_id', '=', $episode_id)
            ->where('result_type', '=', $order_type)
            ->where('order_id', '=', $order_id)
            ->first();

        if ($invest_results) {

            $order = InvestigationResults::find($invest_results->id);

            if ($order_type != 'Lab') {
                $order->value = $investigation_results;
                $order->comment = $comments;
                $order->all_authenticated = 1;
                $order->result_type = $order_type;
                $order->per_investigation = str_replace('0', '1', $per_investigation);
                $order->authenticated_by = $logged_in_user_id;
                $order->updated_by = $logged_in_user_id;

                $order_status = 1;
            } else {
                $order->value = $investigation_results;
                $order->comment = $comments;
                $order->all_authenticated = 0;
                $order->result_type = $order_type;
                $order->updated_by = $logged_in_user_id;
            }

            try {
                $order->save();

                flash("Investigation results have been updated")->success();

                if (isset($order_status)) {
                    //update ordered investigations status
                    $status = OrderedInvestigation::find($order_id);
                    $status->investigation_status = 1;
                    $status->save();
                }
            } catch (QueryException $e) {
                return back()->withInput();
            }
        } else {
            $order = new InvestigationResults;

            if ($order_type != 'Lab') {
                $order->value = $investigation_results;
                $order->comment = $comments;
                $order->all_authenticated = 1;
                $order->result_type = $order_type;
                $order->per_investigation = str_replace('0', '1', $per_investigation);
                $order->authenticated_by = $logged_in_user_id;
                $order->created_by = $logged_in_user_id;
                $order->investigation_id = $investigation_ids;
                $order->patient_id = $patient_id;
                $order->episode_id = $episode_id;
                $order->order_id = $order_id;
                $order->inpatient = $inpatient;

                $order_status = 1;
            } else {
                $order->investigation_id = implode(",", $investigation_ids_array); //$investigation_ids;
                $order->value = $investigation_results;
                $order->comment = $comments;
                $order->patient_id = $patient_id;
                $order->episode_id = $episode_id;
                $order->order_id = $order_id;
                $order->inpatient = $inpatient;
                $order->per_investigation = $per_investigation;
                $order->all_authenticated = 0;
                $order->result_type = $order_type;
                $order->created_by = $logged_in_user_id;
            }

            try {
                $order->save();

                flash("Investigation results have been submitted")->success();

                if (isset($order_status)) {
                    //update ordered investigations status
                    $status = OrderedInvestigation::find($order_id);
                    $status->investigation_status = 1;
                    $status->save();
                }
            } catch (QueryException $e) {
                return back()->withInput();
            }
        }

        if (!empty($lab_result_document_array[0])) {
            foreach ($request->file('lab_result_document') as $key => $lab_result_document) {
                $patient_document = PatientDocument::where([['patient_id', $patient_id], ['episode_id', $episode_id], ['investigation_id', $id[$key]]])->first();
                if (empty($patient_document)) {
                    $patient_document = new PatientDocument;
                    $patient_document->patient_id = $request->patient_id;
                    $patient_document->episode_id = $request->episode_id;
                    $patient_document->investigation_id = $id[$key];
                    $patient_document->investigation_result_id = $order->id;
                    $patient_document->created_by = Auth::id();
                } else $patient_document->updated_by = Auth::id();

                $patient_document->title = 'Lab Result document_' . get_name($id[$key], 'id', 'name', 'investigations');
                $patient_document->description = 'Laboratory Result document of the ' . get_name($id[$key], 'id', 'name', 'investigations') . ' investigation.';

                if ($lab_result_document->isValid()) {
                    $file = $lab_result_document;
                    $store = public_path() . '/uploads/patient-documents/';
                    $file_name = $file->getClientOriginalName();
                    $file->move($store, $file_name);
                    $patient_document->path = public_path() . '/uploads/patient-documents/' . $file_name;
                }

                $patient_document->date_taken = Carbon::now()->toDateString();
                $patient_document->save();
            }
        }



        // i took the road less taken, and that has made all the difference
        if ($order_type == 'Lab') {
            return redirect("/investigations/view_lab_results_details/" . $order_id);
        } elseif ($order_type == 'Imaging') {
            return redirect("/investigations/incoming_imaging/" . $order_type);
        } elseif ($order_type == 'Ultrasound') {
            return redirect("/investigations/incoming_imaging/" . $order_type);
        } elseif ($order_type == 'Cardio') {
            return redirect("/investigations/incoming_imaging/" . $order_type);
        }
    }

    /**
     * Authenticate lab investigations.
     *
     * @param Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\Http\Response|\Illuminate\View\View
     */
    public function authenticate_labs(Request $request)
    {
        $search_text = "";
        $filters = [];

        // if patient id is active, get all records regardless of date; else search by date
        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['investigation_results.patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        } else {
            switch ($request->search_date_by) {
                case 'yesterday':
                    $end_date = Carbon::yesterday()->endOfDay();
                    $start_date = Carbon::yesterday()->startOfDay();
                    $search_text .= "Yesterday ";
                    break;
                case 'custom_date':
                    $end_date = Carbon::parse($request->start_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " ";
                    break;
                case 'custom_date_range':
                    $end_date = Carbon::parse($request->end_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " to " . streamline_date($end_date) . " ";
                    break;
                case 'today':
                default:
                    $end_date = Carbon::today()->endOfDay();
                    $start_date = Carbon::today()->startOfDay();
                    $search_text .= "Today ";
                    break;
            }

            $filters[] = ['investigation_results.created_at', '>', $start_date];
            $filters[] = ['investigation_results.created_at', '<', $end_date];
        }

        $invests = DB::table('investigation_results')
            ->join('ordered_investigations', 'investigation_results.order_id', '=', 'ordered_investigations.id')
            ->select('investigation_results.investigation_id', 'investigation_results.value', 'investigation_results.patient_id', 'investigation_results.created_by', 'investigation_results.created_at', 'investigation_results.order_id', 'investigation_results.per_investigation', 'ordered_investigations.id', 'ordered_investigations.investigation_status', 'ordered_investigations.urgent', 'ordered_investigations.urgent_ids', 'investigation_results.id as result_id')
            ->where($filters)
            ->where('investigation_results.all_authenticated', '=', 0)
            ->where('investigation_results.result_type', '=', 'Lab')
            ->orderBy('investigation_results.created_at', 'desc')
            ->get()
            ->toArray();

        $orders = [];
        $orders_count = 0;
        $data = [];
        $data_count = 0;

        foreach ($invests as $invest) {
            $orders[$orders_count]['order_id'] = $invest->order_id;
            $orders[$orders_count]['date'] = streamline_date_time_short($invest->created_at);
            $orders[$orders_count]['number'] = get_name($invest->patient_id, 'id', 'number', 'patients');
            $orders[$orders_count]['id'] = $invest->patient_id;
            $orders[$orders_count]['urgent_ids'] = $invest->urgent_ids;

            $investigations = explode(",", $invest->investigation_id);
            $values = explode(",", $invest->value);
            $per_investigation = explode(",", $invest->per_investigation);

            foreach ($investigations as $investigation) {
                $result_document = PatientDocument::where([['patient_id', $invest->patient_id], ['investigation_result_id', $invest->result_id],  ['investigation_id', $investigation]])->first();
                $data[$data_count]['investigation_id'] = $investigation;
                $data[$data_count]['name'] = get_name($investigation, 'id', 'name', 'investigations');
                $data[$data_count]['value'] = $values[$data_count] ?? 'N/A';
                $data[$data_count]['document'] = $result_document->id ?? null;
                $data[$data_count]['title'] = $result_document->title ?? null;
                $data[$data_count]['per_investigation'] = $per_investigation[$data_count] ?? 'N/A';

                $data_count++;
            }

            $orders[$orders_count]['values'] = $data;

            //reset data array
            $data = [];
            $data_count = 0;

            $orders_count++;
        }

        return view('investigations::investigations.authenticate_labs', compact('orders', 'search_text'));
    }

    /**
     * Authenticate investigations.
     *
     * @return \Illuminate\Http\Response
     */
    public function authenticate_investigations(Request $request)
    {

        // check if user with details exists
        $user = User::where('username', '=', $request->username)->first();

        if (!$user) {
            flash("Username does not exist in system")->error();
            return back()->withInput();
        }

        if (!password_verify($request->password, $user->password)) {
            flash("Password does not match username")->error();
            return back()->withInput();
        }

        if ($user->can('investigations-authenticate')) {
            $order_ids = $request->order_id;
            $investigation_id = $request->investigation_id;
            $count_orders = $request->count;

            //loop through all the ordered investigations
            for ($x = 0; $x < count($order_ids); $x++) {

                //fill initial array with 0 values
                $all_inv = [];

                for ($y = 0; $y < $count_orders[$x]; $y++) {
                    $all_inv[] = 0;
                }

                for ($i = 0; $i < count($investigation_id); $i++) {

                    $inv = explode("/", $investigation_id[$i]);

                    if ($inv[0] == $order_ids[$x]) {
                        $all_inv[$inv[1]] = 1;
                    }
                }

                $per_inv = implode(",", $all_inv);

                //prepare save data
                $result = InvestigationResults::where('order_id', '=', $order_ids[$x])->first();
                $logged_in_user_id = $user->id;

                if (array_unique($all_inv) === array(1)) {
                    //all results have been authenticated
                    $result->all_authenticated = 1;
                    $result->per_investigation = $per_inv;
                    $result->authenticated_by = $logged_in_user_id;

                    //update ordered status
                    $order = OrderedInvestigation::find($order_ids[$x]);

                    if ($order) {
                        $order->investigation_status = 1;
                        $order->updated_by = $logged_in_user_id;

                        $order->save();
                    }
                } else {
                    //not all results authenticated
                    $result->all_authenticated = 0;
                    $result->per_investigation = $per_inv;
                    $result->authenticated_by = $logged_in_user_id;

                    //update ordered status
                    $order = OrderedInvestigation::find($order_ids[$x]);

                    if ($order) {
                        $order->investigation_status = 0;
                        $order->updated_by = $logged_in_user_id;

                        $order->save();
                    }
                }

                //save result
                $result->save();
            }

            flash("Lab results have been authenticated")->success();
            return redirect("/investigations/authenticate_labs");
        } else {
            flash("You are not allowed to authenticate investigations")->error();
            return back()->withInput();
        }
    }

    /**
     * View a patient's investigation results.
     *
     */
    public function view_patient_investigation($result_id)
    {
        $result = InvestigationResults::find($result_id);

        if ($result) {
            $patient_id = $result->patient_id;
            $episode_id = $result->episode_id;
            $result_type = $result->result_type;
            $patient = Patient::where(['id' => $patient_id])->first();

            $inv = [];

            $inv['date'] = streamline_date(get_name($result->episode_id, 'id', 'created_at', 'patient_episodes'));

            $investigations = explode(",", $result->investigation_id);

            $values = explode(",", $result->value);
            $comments = explode(",", $result->comment);

            $data = [];
            $count = 0;

            foreach ($investigations as $investigation) {
                $investigation_details = Investigation::find($investigation);

                if ($investigation_details) {
                    $data[$count]['id'] = $investigation;
                    $data[$count]['name'] = $investigation_details->name;
                    $data[$count]['range'] = ($investigation_details->range_type == 1) ? get_dynamic_normal_range($investigation, get_patient_age_group($patient_id), get_name($patient_id, 'id', 'gender', 'patients')) : $investigation_details->normal_ranges;
                    $data[$count]['slug'] = $investigation_details->slug;
                    $data[$count]['result'] = $values[$count];
                    $data[$count]['comment'] = $comments[$count];
                    $data[$count]['type'] = $investigation_details->type;
                    $count++;
                }
            }

            $inv['data'] = $data;

            $order_id = $result->order_id;

            return view('investigations::investigations.view_patient_investigation', compact('inv', 'patient', 'episode_id', 'result_type', 'result_id', 'order_id'));
        } else {
            flash("Unable to find investigation results. Please try again")->error();
            return redirect('/home');
        }
    }

    /**
     * Update all the resources in storage.
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\View\View
     */
    public function alter_results(Request $request)
    {
        $search_text = "";
        $filters = [];

        // if patient id is active, get all records regardless of date; else search by date
        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        } else {
            switch ($request->search_date_by) {
                case 'yesterday':
                    $end_date = Carbon::yesterday()->endOfDay();
                    $start_date = Carbon::yesterday()->startOfDay();
                    $search_text .= "Yesterday ";
                    break;
                case 'custom_date':
                    $end_date = Carbon::parse($request->start_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " ";
                    break;
                case 'custom_date_range':
                    $end_date = Carbon::parse($request->end_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " to " . streamline_date($end_date) . " ";
                    break;
                case 'today':
                default:
                    $end_date = Carbon::today()->endOfDay();
                    $start_date = Carbon::today()->startOfDay();
                    $search_text .= "Today ";
                    break;
            }

            $filters[] = ['created_at', '>', $start_date];
            $filters[] = ['created_at', '<', $end_date];
        }

        $results = InvestigationResults::where('result_type', 'Lab')
            ->where('status', 0)
            ->where('all_authenticated', 1)
            ->where($filters)
            ->orderBy('id', 'desc')
            ->get();

        return view('investigations::investigations.alter_results', compact('results', 'search_text'));
    }

    /**
     * Update all the resources in storage.
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\View\View
     */
    public function alter_results_others(Request $request)
    {
        $search_text = "";
        $filters = [];

        // if patient id is active, get all records regardless of date; else search by date
        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['ordered_investigations.patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        } else {
            switch ($request->search_date_by) {
                case 'yesterday':
                    $end_date = Carbon::yesterday()->endOfDay();
                    $start_date = Carbon::yesterday()->startOfDay();
                    $search_text .= "Yesterday ";
                    break;
                case 'custom_date':
                    $end_date = Carbon::parse($request->start_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " ";
                    break;
                case 'custom_date_range':
                    $end_date = Carbon::parse($request->end_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " to " . streamline_date($end_date) . " ";
                    break;
                case 'today':
                default:
                    $end_date = Carbon::today()->endOfDay();
                    $start_date = Carbon::today()->startOfDay();
                    $search_text .= "Today ";
                    break;
            }

            $filters[] = ['ordered_investigations.created_at', '>', $start_date];
            $filters[] = ['ordered_investigations.created_at', '<', $end_date];
        }

        $results = InvestigationResults::leftJoin('patients', 'investigation_results.patient_id', '=', 'patients.id')
            ->leftJoin('ordered_investigations', 'ordered_investigations.id', '=', 'investigation_results.order_id')
            ->whereIn('investigation_results.result_type', ['Imaging', 'Ultrasound', 'Cardio', 'Ultrasound_Obstetric'])
            ->where($filters)
            ->orderBy('investigation_results.id', 'desc')
            ->select(
                'investigation_results.*',
                'ordered_investigations.created_at as requested_at',
                'patients.number as patient_number',
                'patients.category_id as patients_category_id',
                'ordered_investigations.inpatient',
                'ordered_investigations.payment_status'
            )
            ->limit(250)
            ->get();

        $patient_categories = DB::table('patient_categories')->where('available', 1)->pluck('name', 'id');

        return view('investigations::investigations.alter_results_others', compact('results', 'search_text', 'patient_categories'));
    }

    /**
     * Update all the resources in storage.
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\View\View
     */
    public function alter_ordered_results(Request $request)
    {
        $patient = Patient::find($request->patient_id);

        $id = $request->id;
        $invs = [];
        $count = 0;
        $result_type = "";

        $results = InvestigationResults::where('id', '=', $id)->get();

        // get all investigations that have specialised variables attached
        $investigations_with_specialised_variables = DB::table('investigation_specialised_variables')
            ->whereNull('deleted_at')
            ->groupBy('investigation_id')
            ->pluck('investigation_id')
            ->toArray();

        foreach ($results as $result) {

            $investigations = explode(",", $result->investigation_id);
            $values = explode(",", $result->value);

            $comments = explode(",", $result->comment);
            $result_type = $result->result_type;
            $episode_id = $result->episode_id;

            foreach ($investigations as $investigation) {
                $result_document = PatientDocument::where([['patient_id', $request->patient_id], ['episode_id', $episode_id],  ['investigation_id', $investigation]])->first();
                $invs[$count]['count'] = $count + 1;
                $invs[$count]['id'] = $investigation;
                $invs[$count]['name'] = get_name($investigation, 'id', 'name', 'investigations');
                $invs[$count]['range'] = (get_name($investigation, 'id', 'range_type', 'investigations') == 1) ? get_dynamic_normal_range($investigation, get_patient_age_group($request->patient_id), get_name($request->patient_id, 'id', 'gender', 'patients')) : get_name($investigation, 'id', 'normal_ranges', 'investigations');
                $invs[$count]['units'] = get_name($investigation, 'id', 'units', 'investigations');
                $invs[$count]['slug'] = get_name($investigation, 'id', 'slug', 'investigations');
                $invs[$count]['episode_id'] = $episode_id;
                $invs[$count]['result'] = $values[$count];
                $invs[$count]['comment'] = $comments[$count];
                $invs[$count]['investigation_specialised_results_id'] = 0;
                $invs[$count]['document'] = $result_document->id ?? null;
                $invs[$count]['title'] = $result_document->title ?? null;

                // check if investigation has specialised variables
                if (in_array($investigation, $investigations_with_specialised_variables)) {
                    // get the specialised results and check if it is valid
                    $specialised_results = InvestigationSpecialisedResult::find($values[$count]);

                    if ($specialised_results) {
                        // store the id for updating later
                        $invs[$count]['investigation_specialised_results_id'] = $values[$count];

                        // for this one, the specialised_variable_ids are the keys and the comments or values are the, well, the values
                        $invs[$count]['value'] = array_combine(explode(",", $specialised_results->specialised_variable_id), explode(",", $specialised_results->value));
                        $invs[$count]['comment'] = array_combine(explode(",", $specialised_results->specialised_variable_id), explode(",", $specialised_results->comment));
                    } else {
                        $invs[$count]['value'] = "";
                        $invs[$count]['comment'] = "";
                    }
                }


                $count++;
            }
        }

        return view('investigations::investigations.alter_ordered_results', compact('invs', 'id', 'investigations_with_specialised_variables', 'patient', 'result_type'));
    }

    /**
     * Update all the resources in storage.
     *
     * @return \Illuminate\Foundation\Application|\Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function save_altered_results(Request $request)
    {
        // get all investigations that have specialised variables attached
        $investigations_with_specialised_variables = DB::table('investigation_specialised_variables')
            ->whereNull('deleted_at')
            ->groupBy('investigation_id')
            ->pluck('investigation_id')
            ->toArray();

        // Replacing the commas the incoming value and comments with full colons
        $id = $request->order_id;
        $id_array = $request->id;
        $value = $request->value;
        $comment = $request->comment;
        $specialized_id_array = $request->specialized_id;
        $specialized_value_array = $request->specialized_value;
        $specialized_comment_array = $request->specialized_comment;
        $investigation_specialised_results_id_array = $request->investigation_specialised_results_id;

        $investigation_results = "";
        $comments = "";

        $logged_in_user_id = Auth::user()->id;

        for ($i = 0; $i < count($id_array); $i++) {
            // check if this investigation is a specialized one
            if (in_array($id_array[$i], $investigations_with_specialised_variables)) {
                // get all the specialised variables available to it
                $specialized_variables = DB::table('investigation_specialised_variables')->whereNull('deleted_at')->where('investigation_id', $id_array[$i])->get();

                $current_ids_array = [];
                $current_values_array = [];
                $current_comments_array = [];

                // loop through the variables, finding out if any is coming from the form,
                // because the specialized_id_array may contain multiple variables for multiple investigations
                // so we need a way of picking the right ones.
                foreach ($specialized_variables as $variable) {
                    $key = array_search($variable->id, $specialized_id_array);

                    if (is_integer($key)) {
                        $current_ids_array[] = $specialized_id_array[$key];
                        // clean up the values and comments for storing
                        $current_values_array[] = str_replace(',', ';', $specialized_value_array[$key]);
                        $current_comments_array[] = str_replace(',', ';', $specialized_comment_array[$key]);
                    }
                }

                $investigation_specialised_results = InvestigationSpecialisedResult::find($investigation_specialised_results_id_array[$i]);

                $investigation_specialised_results->specialised_variable_id = implode(',', $current_ids_array);
                $investigation_specialised_results->value = implode(',', $current_values_array);
                $investigation_specialised_results->comment = implode(',', $current_comments_array);
                $investigation_specialised_results->created_by = $logged_in_user_id;
                $investigation_specialised_results->updated_by = $logged_in_user_id;
                $investigation_specialised_results->save();

                $value[$i] = $investigation_specialised_results->id;
                $comment[$i] = "-";
            }

            if ($i == (count($id_array) - 1)) {
                $investigation_results .= str_replace(',', ';', $value[$i]);
                $comments .= str_replace(',', ';', $comment[$i]);
            } else {
                $investigation_results .= str_replace(',', ';', $value[$i]) . ",";
                $comments .= str_replace(',', ';', $comment[$i]) . ",";
            }
        }

        if (!empty($request->lab_result_document[0])) {
            foreach ($request->file('lab_result_document') as $key => $lab_result_document) {
                $patient_document = PatientDocument::where([['patient_id', $request->patient_id], ['episode_id', $request->episode_ids[$key]], ['investigation_result_id', $request->order_id], ['investigation_id', $request->id[$key]]])->first();
                if (empty($patient_document)) {
                    $patient_document = new PatientDocument;
                    $patient_document->patient_id = $request->patient_id;
                    $patient_document->episode_id = $request->episode_ids[$key];
                    $patient_document->investigation_id = $request->id[$key];
                    $patient_document->investigation_result_id = $request->order_id;
                    $patient_document->created_by = Auth::id();
                } else $patient_document->updated_by = Auth::id();

                $patient_document->title = 'Lab Result document_' . get_name($request->id[$key], 'id', 'name', 'investigations');
                $patient_document->description = 'Laboratory Result document of the ' . get_name($request->id[$key], 'id', 'name', 'investigations') . ' investigation.';

                if ($lab_result_document->isValid()) {
                    $file = $lab_result_document;
                    $store = public_path() . '/uploads/patient-documents/';
                    $file_name = $file->getClientOriginalName();
                    $file->move($store, $file_name);
                    $patient_document->path = public_path() . '/uploads/patient-documents/' . $file_name;
                }

                $patient_document->date_taken = Carbon::now()->toDateString();
                $patient_document->save();
            }
        }

        $result = InvestigationResults::find($id);

        $result->value = $investigation_results;
        $result->comment = $comments;
        $result->updated_by = $logged_in_user_id;

        try {
            $result->save();

            flash("Investigation results have been updated")->success();
        } catch (QueryException $e) {
            return back()->withInput();
        }

        if ($result->result_type == "Lab") {
            return redirect('/investigations/alter_results');
        } else {
            return redirect('/investigations/alter_results_others');
        }
    }

    /**
     * Update all the resources in storage.
     *
     */
    public function historical_labs(Request $request)
    {
        $search_text = "";
        $filters = [];

        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['investigation_results.patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        }

        $patients = InvestigationResults::leftJoin('patients', 'investigation_results.patient_id', '=', 'patients.id')
            ->where('investigation_results.result_type', '=', 'Lab')
            ->where('investigation_results.all_authenticated', '=', 1)
            ->where($filters)
            ->limit(250)
            ->distinct(['investigation_results.patient_id'])
            ->orderBy('investigation_results.id', 'desc')
            ->get(['investigation_results.patient_id', 'patients.number', 'patients.gender', 'patients.phone']);

        return view('investigations::investigations.historical_labs', compact('patients', 'search_text'));
    }

    /**
     * Update all the resources in storage.
     *
     */
    public function view_historical_results_labs($patient_id)
    {
        //prepare the arrays
        $dates = array();
        $invs_array = array();
        $values = array();

        $patients = InvestigationResults::where('patient_id', '=', $patient_id)
            ->where('result_type', '=', 'Lab')
            ->where('all_authenticated', '=', 1)
            ->orderBy('created_at', 'desc')
            ->limit(7)
            ->get();

        foreach ($patients as $patient) {
            $dates[] = streamline_date($patient->created_at);

            $investigations = explode(",", $patient->investigation_id);

            foreach ($investigations as $investigation) {

                if (!in_array($investigation, $invs_array)) {
                    $invs_array[] = $investigation;
                }
            }
        }

        //loop through the investigation ids to add values
        for ($i = 0; $i < count($invs_array); $i++) {

            //count for the returnInvestigations
            $count = 0;

            foreach ($patients as $patient) {
                //get values from csv to array
                $investigations = explode(",", $patient->investigation_id);

                $return_values = explode(",", $patient->value);

                $comments = explode(",", $patient->comment);

                //check if current investigation is in array
                if (in_array($invs_array[$i], $investigations)) {

                    //get key of that investigation which exists
                    $key = array_search($invs_array[$i], $investigations);

                    if ($patient->result_type == 'Ultrasound_Obstetric') {
                        //assign real$return_values value
                        $values[$i][$count] = array($return_values[$key], $patient->order_id, $patient_id, $patient->episode_id);
                    } elseif (get_name($invs_array[$i], 'id', 'type', 'investigations') == 1) {
                        // assign real value representing id
                        $values[$i][$count] = $return_values[$key] ?? "";
                    } else {
                        //assign real value
                        $values[$i][$count] = ($return_values[$key] ?? "") . "  -  (" . ($comments[$key] ?? "") . ")";
                    }
                } else {
                    //assign N/A
                    $values[$i][$count] = "";
                }

                $count++;
            }
        }

        $patient = Patient::find($patient_id);

        return view('investigations::investigations.view_historical_results_labs', compact(
            'patient_id',
            'patient',
            'dates',
            'invs_array',
            'values'
        ));
    }

    public function imaging_historical_results(Request $request)
    {
        $search_text = "";
        $filters = [];

        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['investigation_results.patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        }

        $patients = InvestigationResults::leftJoin('patients', 'investigation_results.patient_id', '=', 'patients.id')
            ->whereIn('investigation_results.result_type', ['Imaging', 'Ultrasound', 'Ultrasound_Obstetric'])
            ->where('investigation_results.all_authenticated', '=', 1)
            ->where($filters)
            ->limit(250)
            ->distinct()
            ->get(['investigation_results.patient_id', 'patients.number', 'patients.gender', 'patients.phone']);

        return view('investigations::investigations.imaging_historical_results', compact('patients', 'search_text'));
    }

    public function investigations_review_ultrasound_obstetric()
    {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');

        $patient = Patient::find($patient_id);

        $categories = DB::table('investigation_categories')->where('super_category_id', 4)->whereNull('deleted_at')->pluck('id')->toArray();

        $investigations = DB::table('investigations')->whereNull('deleted_at')->whereIn('category', $categories)
            ->pluck('name', 'id')->toArray();
        $investigations = ['' => '- select -'] + $investigations;

        $anc_details = DB::table('ante_natal_clinic_registrations')->where('episode_id', $episode_id)->first();

        return view('investigations::investigations.investigations_review_ultrasound_obstetric', compact('patient_id', 'episode_id', 'patient', 'investigations', 'anc_details'));
    }

    public function submit_ordered_obstetric_investigations(Request $request)
    {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');

        //create new order investigation
        $order = new OrderedInvestigation;

        $order->investigation_id = $request->investigations_id;
        $order->patient_id = $patient_id;
        $order->episode_id = $episode_id;
        $order->urgent = 0;
        $order->urgent_ids = "";
        $order->inpatient = 0;
        $order->for_inpatient = "";
        $order->order_type = 'Ultrasound_Obstetric';
        $order->comment = $request->comment;
        $order->eye = "";
        $order->order_comments = $request->comment;
        $order->created_by = Auth::user()->id;

        try {
            $order->save();
            flash("Ordered Investigation Added Successfully")->success();
        } catch (QueryException $e) {
            flash("An error occurred. Please try again or contact Stre@mline support")->error();
        }

        return redirect('ante_natal_clinic_follow_up/create');
    }

    public function ultrasound_obstetric_report(Request $request)
    {


        $order_id = $request->order_id;
        $patient_id = $request->patient_id;
        $episode_id = $request->episode_id;
        $order_type = $request->order_type;

        $patient = Patient::find($patient_id);
        $categories = PatientCategory::pluck("name", "id");
        $marital_statuses = MaritalStatus::pluck("name", "id");
        $occupations = Occupation::pluck('name', 'id');
        $drug_categories = DrugCategory::orderBy('name', 'asc')->get();
        $documents = PatientDocument::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_allergies = Allergy::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $drug_categories_array = DrugCategory::pluck('name', 'id');

        return view('investigations::investigations.ultrasound_obstetric_report', compact('patient_id', 'episode_id', 'order_id', 'order_type', 'patient', 'categories', 'known_patient_allergies', 'drug_categories', 'drug_categories_array', 'documents', 'marital_statuses', 'occupations'));
    }

    public function submit_ultrasound_obstetric_report(Request $request)
    {
        // man the tanks
        $crown_rump = $request->crown_rump1 . "," . $request->crown_rump2 . "," . $request->crown_rump3;
        $bi_parietal_diameter = $request->bi_parietal_diameter1 . "," . $request->bi_parietal_diameter2 . "," . $request->bi_parietal_diameter3;
        $head_circumference = $request->head_circumference1 . "," . $request->head_circumference2 . "," . $request->head_circumference3;
        $abdominal_circumference = $request->abdominal_circumference1 . "," . $request->abdominal_circumference2 . "," . $request->abdominal_circumference3;
        $femur_length = $request->femur_length1 . "," . $request->femur_length2 . "," . $request->femur_length3;
        $estimated_foetal_weight = $request->estimated_foetal_weight1 . "," . $request->estimated_foetal_weight2 . "," . $request->estimated_foetal_weight3;
        $average_gestational_age = $request->average_gestational_age1 . "," . $request->average_gestational_age2 . "," . $request->average_gestational_age3;
        $expected_delivery_date = $request->expected_delivery_date1 . "," . $request->expected_delivery_date2 . "," . $request->expected_delivery_date3;
        $presentation = $request->presentation1 . "," . $request->presentation2 . "," . $request->presentation3;
        $placental_site = $request->placental_site1 . "," . $request->placental_site2 . "," . $request->placental_site3;
        $liquor_volume = $request->liquor_volume1 . "," . $request->liquor_volume2 . "," . $request->liquor_volume3;
        $cord_artery_doppler = $request->cord_artery_doppler1 . "," . $request->cord_artery_doppler2 . "," . $request->cord_artery_doppler3;
        $comments = $request->comments1 . ",,," . $request->comments2 . ",,," . $request->comments3;


        $logged_in_user_id = Auth::user()->id;

        // check if this is an alter or new record
        if (!empty($request->alter_obstetric)) {
            // update report
            $report = ObstetricUltrasoundReports::find($request->alter_obstetric);

            $report->order_id = $request->order_id;
            $report->scan_date = Carbon::createFromFormat('d-m-Y', $request->scan_date)->format('Y-m-d');
            $report->sonographer = $request->sonographer;
            $report->no_of_foetus = $request->no_of_foetus;
            $report->crown_rump = $crown_rump;
            $report->bi_parietal_diameter = $bi_parietal_diameter;
            $report->head_circumference = $head_circumference;
            $report->abdominal_circumference = $abdominal_circumference;
            $report->femur_length = $femur_length;
            $report->average_gestational_age = $average_gestational_age;
            $report->estimated_foetal_weight = $estimated_foetal_weight;
            $report->expected_delivery_date = $expected_delivery_date;
            $report->presentation = $presentation;
            $report->placental_site = $placental_site;
            $report->liquor_volume = $liquor_volume;
            $report->cord_artery_doppler = $cord_artery_doppler;
            $report->comments = $comments;
            $report->updated_by = $logged_in_user_id;

            $report->save();

            flash("Investigation Results Altered Successfully")->success();

            return redirect("/investigations/alter_results_others");
        } else {
            // create new report
            $report = new ObstetricUltrasoundReports;

            $report->order_id = $request->order_id;
            $report->scan_date = Carbon::createFromFormat('d-m-Y', $request->scan_date)->format('Y-m-d');
            $report->sonographer = $request->sonographer;
            $report->no_of_foetus = $request->no_of_foetus;
            $report->crown_rump = $crown_rump;
            $report->bi_parietal_diameter = $bi_parietal_diameter;
            $report->head_circumference = $head_circumference;
            $report->abdominal_circumference = $abdominal_circumference;
            $report->femur_length = $femur_length;
            $report->average_gestational_age = $average_gestational_age;
            $report->estimated_foetal_weight = $estimated_foetal_weight;
            $report->expected_delivery_date = $expected_delivery_date;
            $report->presentation = $presentation;
            $report->placental_site = $placental_site;
            $report->liquor_volume = $liquor_volume;
            $report->cord_artery_doppler = $cord_artery_doppler;
            $report->comments = $comments;
            $report->created_by = $logged_in_user_id;

            $report->save();

            // update investigation status
            $status = OrderedInvestigation::find($request->order_id);
            $status->investigation_status = 1;
            $status->save();

            // create new record in the investigation results
            $order = new InvestigationResults;

            $order->investigation_id = $status->investigation_id;
            $order->value = $report->id;
            $order->comment = $comments;
            $order->all_authenticated = 1;
            $order->result_type = 'Ultrasound_Obstetric';
            $order->per_investigation = 1;
            $order->authenticated_by = $logged_in_user_id;
            $order->created_by = $logged_in_user_id;
            $order->patient_id = $request->patient_id;
            $order->episode_id = $request->episode_id;
            $order->order_id = $request->order_id;
            $order->inpatient = 0;

            $order->save();

            flash("Investigation Results Added Successfully")->success();

            return redirect("/investigations/incoming_imaging/Ultrasound_Obstetric");
        }
    }

    public function view_patient_investigation_obstetric($obstetric_result_id)
    {

        $report = ObstetricUltrasoundReports::where(['id' => $obstetric_result_id])->first();

        // for old kisiizi records which use the order_id
        if (!$report) {
            $report = ObstetricUltrasoundReports::where(['order_id' => $obstetric_result_id])->first();
        }

        $invs_order = OrderedInvestigation::find($report->order_id);
        // dd($report);



        if ($invs_order) {
            $patient_id = $invs_order->patient_id;
            $episode_id = $invs_order->episode_id;

            $patient = Patient::find($patient_id);

            $anc_details = DB::table('ante_natal_clinic_registrations')->where('episode_id', $episode_id)->first();

            return view('investigations::investigations.view_patient_investigation_obstetric', compact('episode_id', 'patient', 'report', 'obstetric_result_id', 'anc_details', 'invs_order'));
        } else {
            flash("Unable to find obstetric results")->error();
            return redirect('/home');
        }
    }

    public function alter_ordered_results_obstetric(Request $request)
    {
        $obstetric_ultrasound_report_id = $request->obstetric_ultrasound_report_id;
        $patient_id = $request->patient_id;
        $episode_id = $request->episode_id;
        $order_id = $request->order_id;

        $report = ObstetricUltrasoundReports::where(['id' => $obstetric_ultrasound_report_id])->first();

        // for old kisiizi records which use the order_id
        if (!$report) {
            $report = ObstetricUltrasoundReports::where(['order_id' => $obstetric_ultrasound_report_id])->first();
        }

        $patient = Patient::find($patient_id);
        $categories = PatientCategory::pluck("name", "id");
        $marital_statuses = MaritalStatus::pluck("name", "id");
        $occupations = Occupation::pluck('name', 'id');
        $drug_categories = DrugCategory::orderBy('name', 'asc')->get();
        $documents = PatientDocument::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $known_patient_allergies = Allergy::where('patient_id', $patient_id)->orderBy('created_at', 'desc')->take(2)->get();
        $drug_categories_array = DrugCategory::pluck('name', 'id');

        return view('investigations::investigations.alter_ordered_results_obstetric', compact('patient_id', 'episode_id', 'order_id', 'patient', 'categories', 'known_patient_allergies', 'drug_categories', 'drug_categories_array', 'documents', 'marital_statuses', 'occupations', 'report', 'obstetric_ultrasound_report_id'));
    }

    public function view_historical_results_imaging($patient_id)
    {

        //prepare the arrays
        $dates = array();
        $invs_array = array();
        $values = array();

        $patients = InvestigationResults::where('patient_id', '=', $patient_id)
            ->whereIn('investigation_results.result_type', ['Imaging', 'Ultrasound', 'Ultrasound_Obstetric'])
            ->limit(7)
            ->get();

        foreach ($patients as $patient) {
            $dates[] = streamline_date($patient->created_at);

            $investigations = explode(",", $patient->investigation_id);

            foreach ($investigations as $investigation) {

                if (!in_array($investigation, $invs_array)) {
                    $invs_array[] = $investigation;
                }
            }
        }

        //loop through the investigation ids to add values
        for ($i = 0; $i < count($invs_array); $i++) {

            //count for the returnInvestigations
            $count = 0;

            foreach ($patients as $patient) {
                //get values from csv to array
                $investigations = explode(",", $patient->investigation_id);

                $return_values = explode(",", $patient->value);

                //check if current investigation is in array
                if (in_array($invs_array[$i], $investigations)) {

                    //get key of that investigation which exists
                    $key = array_search($invs_array[$i], $investigations);

                    if ($patient->result_type == 'Ultrasound_Obstetric') {
                        //assign real value
                        $values[$i][$count] = array($return_values[$key], $patient->order_id, $patient_id, $patient->episode_id);
                    } else {
                        //assign real value
                        $values[$i][$count] = $return_values[$key];
                    }
                } else {
                    //assign N/A
                    $values[$i][$count] = "N/A";
                }

                $count++;
            }
        }

        $patient = Patient::find($patient_id);

        return view('investigations::investigations.view_historical_results_imaging', compact('patient_id', 'patient', 'dates', 'invs_array', 'values'));
    }

    public function get_receive_request_details(Request $request)
    {
        $order = DB::table('ordered_investigations')
            ->where('id', $request->id)
            ->select('id', 'investigation_id', 'patient_id', 'episode_id', 'inpatient', 'created_at', 'created_by')
            ->first();

        $html_text = "<table class='table table-bordered table-striped'>";
        $investigations = explode(",", $order->investigation_id);
        $html_text .= "<tr>";
        $html_text .= "<th style='color: black'> Test Name </th>";
        $html_text .= "<th style='color: black'> Date Requested </th>";
        $html_text .= "</tr>";

        foreach ($investigations as $investigation) {
            $html_text .= "<tr>";
            $html_text .= "<td>";
            $html_text .= get_name($investigation, 'id', 'name', 'investigations');
            $html_text .= "</td>";
            $html_text .= "<td>";
            $html_text .= streamline_date($order->created_at);
            $html_text .= "</td>";
            $html_text .= "</tr>";
        }

        $html_text .= "</table>";

        $patient = Patient::withTrashed()->find($order->patient_id);
        $patient_age = get_patients_age($patient->date_of_birth);
        $patient_gender = $patient->gender == 1 ? "Male" : "Female";

        if (is_lab_number_editing_enabled()) {
            $lab_number = (sprintf("%05u", $order->id) . '/' . Carbon::parse($order->created_at)->month . '/' . Carbon::parse($order->created_at)->format('y') . '/' .
                $patient->first_name[0] . $patient->last_name[0]);
        } else {
            $lab_number = $order->id;
        }

        return json_encode([
            "patient_number" => get_name($order->patient_id, 'id', 'number', 'patients'),
            "patient_name" => get_full_name($order->patient_id, 'id', 'first_name', 'last_name', 'patients'),
            "source" => ($order->inpatient == 1) ? get_ward_name($order->patient_id, $order->episode_id) : 'OPD',
            "lab_number" => $lab_number,
            "order_id" => $order->id,
            "requested_by" => get_full_name($order->created_by, 'id', 'first_name', 'last_name', 'users'),
            "patient_age" => $patient_age,
            "telephone_number" => $patient->phone,
            "patient_gender" => $patient_gender,
            "html" => $html_text
        ]);
    }

    public function save_receive_request_details(Request $request)
    {
        $id = $request->id;
        $specimen_array = $request->specimen;
        $status_array = $request->status;
        $reason_array = $request->reason;

        $ordered_investigation = OrderedInvestigation::find($id);

        if ($ordered_investigation) {
            $specimen_clean_array = [];
            $status_clean_array = [];
            $reason_clean_array = [];

            // check string for 0 and remove
            for ($i = 0; $i < count($specimen_array); $i++) {
                if ($specimen_array[$i] != 0 && $status_array[$i] != 0) {
                    $specimen_clean_array[] = $specimen_array[$i];
                    $status_clean_array[] = $status_array[$i];
                    $reason_clean_array[] = $reason_array[$i];
                }
            }

            $ordered_investigation->request_received_date = Carbon::now();
            $ordered_investigation->specimen = implode(",", $specimen_clean_array);
            $ordered_investigation->specimen_status = implode(",", $status_clean_array);
            $ordered_investigation->specimen_reason = implode(",", $reason_clean_array);
            $ordered_investigation->lab_number = $request->lab_number;
            $ordered_investigation->request_received = 1;
            $ordered_investigation->request_received_by = Auth::id();

            return ($ordered_investigation->save()) ? 1 : 0;
        } else {
            return 0;
        }
    }

    public function print_request_barcode($id)
    {
        // get the patient id then name
        $patient_name = get_full_name(get_name($id, 'id', 'patient_id', 'ordered_investigations'), 'id', 'first_name', 'last_name', 'patients');
        return view('investigations::investigations.print_request_barcode', compact('patient_name', 'id'));
    }

    public function view_lab_results(Request $request)
    {
        $search_text = "";
        $filters = [];

        // if patient id is active, get all records regardless of date; else search by date
        if (isset($request->patient_id) && $request->patient_id != 0) {
            $filters[] = ['ordered_investigations.patient_id', '=', $request->patient_id];
            $search_text .= "Patient: " . get_full_name($request->patient_id, 'id', 'first_name', 'last_name', 'patients');
            $search_text .= " (" . get_name($request->patient_id, 'id', 'number', 'patients') . ") ";
        } elseif (isset($request->lab_number) && $request->lab_number != '') {
            $filters[] = ['ordered_investigations.id', '=', $request->lab_number];
            $search_text .= "Lab Number: " . $request->lab_number;
        } else {
            switch ($request->search_date_by) {
                case 'yesterday':
                    $end_date = Carbon::yesterday()->endOfDay();
                    $start_date = Carbon::yesterday()->startOfDay();
                    $search_text .= "Yesterday ";
                    break;
                case 'custom_date':
                    $end_date = Carbon::parse($request->start_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " ";
                    break;
                case 'custom_date_range':
                    $end_date = Carbon::parse($request->end_date)->endOfDay();
                    $start_date = Carbon::parse($request->start_date)->startOfDay();
                    $search_text .= "From: " . streamline_date($start_date) . " to " . streamline_date($end_date) . " ";
                    break;
                case 'today':
                default:
                    $end_date = Carbon::today()->endOfDay();
                    $start_date = Carbon::today()->startOfDay();
                    $search_text .= "Today ";
                    break;
            }

            $filters[] = ['ordered_investigations.created_at', '>', $start_date];
            $filters[] = ['ordered_investigations.created_at', '<', $end_date];
        }

        $incomings = OrderedInvestigation::where('investigation_status', 0)
            ->where('request_received', 1)
            ->where('order_type', 'Lab')->where('urgent_ids', '=', '')
            ->where($filters)
            ->orderBy('id', 'desc')
            ->limit(250)
            ->get();
        $urgent_incomings = OrderedInvestigation::where('investigation_status', 0)
            ->where('request_received', 1)
            ->where('order_type', 'Lab')->where('urgent_ids', '<>', '')
            ->where($filters)
            ->orderBy('id', 'desc')
            ->limit(250)
            ->get();

        $all_complete = OrderedInvestigation::where(['ordered_investigations.investigation_status' => 1])
            ->where('ordered_investigations.request_received', 1)
            ->where('ordered_investigations.order_type', 'Lab')
            ->where($filters)
            ->leftJoin('investigation_results', 'investigation_results.order_id', '=', 'ordered_investigations.id')
            ->orderBy('ordered_investigations.id', 'desc')
            ->limit(250)
            ->get(['ordered_investigations.*', 'investigation_results.created_at as results_created_at']);

        $specimen = LaboratorySpecimen::pluck('name', 'id')->toArray();

        return view('investigations::investigations.view_lab_results', compact('incomings', 'specimen', 'all_complete', 'search_text', 'urgent_incomings'));
    }

    public function view_lab_results_quick_view(Request $request)
    {
        $order = DB::table('ordered_investigations')
            ->where('id', $request->id)
            ->select('investigation_id', 'patient_id', 'specimen', 'specimen_status')
            ->first();

        $html_text = "<table class='table table-bordered table-striped'>";

        if ($request->type == 1) {
            $records = explode(",", $order->investigation_id);
        } else {
            $records = explode(",", $order->specimen);
        }

        // explode the status as well for specimen
        $status_array = explode(",", $order->specimen_status);
        $status_counter = 0;

        $html_text .= "<tr>";
        if ($request->type == 1) {
            $html_text .= "<th style='color: black' class='text-center'> Test Name </th>";
        } else {
            $html_text .= "<th style='color: black' class='text-center'> Specimen Name </th>";
            $html_text .= "<th style='color: black' class='text-center'> Status </th>";
        }
        $html_text .= "</tr>";

        foreach ($records as $record) {
            $html_text .= "<tr>";
            if ($request->type == 1) {
                $html_text .= "<td class='text-center'>";
                $html_text .= get_name($record, 'id', 'name', 'investigations');
                $html_text .= "</td>";
            } else {
                $html_text .= "<td class='text-center'>";
                $html_text .= get_name($record, 'id', 'name', 'laboratory_specimens');
                $html_text .= "</td>";

                $html_text .= "<td class='text-center'>";
                if ($status_array[$status_counter] == 1) {
                    $html_text .= "<font color='green'>Taken</font>";
                } else if ($status_array[$status_counter] == 2) {
                    $html_text .= "<font color='orange'>Not Taken</font>";
                } else if ($status_array[$status_counter] == 3) {
                    $html_text .= "<font color='#ff4500'>Rejected</font>";
                }
                $html_text .= "</td>";

                $status_counter++;
            }
            $html_text .= "</tr>";
        }

        $html_text .= "</table>";

        return json_encode([
            "patient_number" => get_name($order->patient_id, 'id', 'number', 'patients'),
            "patient_name" => get_full_name($order->patient_id, 'id', 'first_name', 'last_name', 'patients'),
            "html" => $html_text
        ]);
    }

    public function view_lab_results_details($id)
    {
        $ordered_investigation = OrderedInvestigation::find($id);
        $patient_id = $ordered_investigation->patient_id;

        $results = [];

        $investigation_results = InvestigationResults::where('order_id', '=', $id)->get();

        foreach ($investigation_results as $result) {
            $investigations = explode(",", $result->investigation_id);
            $values = explode(",", $result->value);
            $comments = explode(",", $result->comment);
            $per_investigation = explode(",", $result->per_investigation);
            $count_two = 0;

            for ($i = 0; $i < count($investigations); $i++) {
                $type = get_name($investigations[$i], 'id', 'type', 'investigations');
                $result_document = PatientDocument::where([['patient_id', $patient_id], ['episode_id', $result->episode_id], ['investigation_result_id', $result->id],  ['investigation_id', $investigations[$i]]])->first();
                $results[$count_two]['id'] = $investigations[$i];
                $results[$count_two]['name'] = get_name($investigations[$i], 'id', 'name', 'investigations');
                $results[$count_two]['range'] = (get_name($investigations[$i], 'id', 'range_type', 'investigations') == 1) ? get_dynamic_normal_range($investigations[$i], get_patient_age_group($patient_id), get_name($patient_id, 'id', 'gender', 'patients')) : get_name($investigations[$i], 'id', 'normal_ranges', 'investigations');
                $results[$count_two]['type'] = $type;
                $results[$count_two]['units'] = get_name($investigations[$i], 'id', 'units', 'investigations');
                $results[$count_two]['result'] = isset($values[$i]) ? $values[$i] : "";
                $results[$count_two]['comment'] = isset($comments[$i]) ? $comments[$i] : "";
                $results[$count_two]['document'] =  $result_document->id ?? "";
                $results[$count_two]['authenticated'] = isset($per_investigation[$i]) ? $per_investigation[$i] : "";
                $count_two++;
            }
        }

        $hospital_information = HospitalInformation::find(1);

        return view('investigations::investigations.view_lab_results_details', compact('ordered_investigation', 'results', 'hospital_information', 'id', 'patient_id'));
    }

    public function view_lab_specialised_results($id)
    {
        $specialised_results = DB::table('investigation_specialised_results')
            ->find($id);

        $html_text = "<table class='table table-bordered table-striped'>";

        $records_id = explode(",", $specialised_results->specialised_variable_id);
        $records_value = explode(",", $specialised_results->value);
        $records_comment = explode(",", $specialised_results->comment);

        $html_text .= "<tr>"
            . "<th style='color: black' class='text-center'> Variable Name </th>"
            . "<th style='color: black' class='text-center'> Value - (Comment) </th>"
            . "</tr>";

        for ($i = 0; $i < count($records_id); $i++) {
            $html_text .= "<tr>";
            $html_text .= "<td class='text-center'>";
            $html_text .= get_name($records_id[$i], 'id', 'name', 'investigation_specialised_variables');
            $html_text .= "</td>";
            $html_text .= "<td class='text-center'>";
            $html_text .= $records_value[$i] . " (" . $records_comment[$i] . ")";
            $html_text .= "</td>";
            $html_text .= "</tr>";
        }

        $html_text .= "</table>";

        return json_encode([
            "investigation_name" => get_name(get_name($records_id[0], 'id', 'investigation_id', 'investigation_specialised_variables'), 'id', 'name', 'investigations'),
            "html" => $html_text,
        ]);
    }

    public function edit_investigation_specimen($id)
    {
        $ordered_investigation = OrderedInvestigation::find($id);

        $specimen = LaboratorySpecimen::orderBy('name', 'asc')->pluck('name', 'id')->toArray();
        $specimen = [0 => '- select -'] + $specimen;

        return view('investigations::investigations.edit_investigation_specimen', compact('ordered_investigation', 'specimen'));
    }

    public function save_investigation_specimen(Request $request)
    {
        $id = $request->id;
        $specimen_array = $request->specimen;
        $status_array = $request->status;
        $reason_array = $request->reason;

        $ordered_investigation = OrderedInvestigation::find($id);

        $specimen_clean_array = [];
        $status_clean_array = [];
        $reason_clean_array = [];

        // check string for 0 and remove
        for ($i = 0; $i < count($specimen_array); $i++) {
            if ($specimen_array[$i] != 0 && $status_array[$i] != 0) {
                $specimen_clean_array[] = $specimen_array[$i];
                $status_clean_array[] = $status_array[$i];
                $reason_clean_array[] = $reason_array[$i];
            }
        }

        $ordered_investigation->specimen = implode(",", $specimen_clean_array);
        $ordered_investigation->specimen_status = implode(",", $status_clean_array);
        $ordered_investigation->specimen_reason = implode(",", $reason_clean_array);

        $ordered_investigation->save();

        flash("Lab specimen have been edited")->success();

        return redirect('/investigations/view_lab_results_details/' . $id);
    }

    public function investigations_to_cancel(Request $request)
    {
        $search_by = $request->search_by;

        if ($search_by == 1) {
            // custom date
            $start_date = Carbon::parse($request->reg_date)->startOfDay()->toDateTimeString();
            $end_date = Carbon::parse($request->reg_date)->endOfDay()->toDateTimeString();

            $date_search = streamline_date($start_date);
        } elseif ($search_by == 2) {
            // custom date range
            $start_date = Carbon::parse($request->start_date)->startOfDay()->toDateTimeString();
            $end_date = Carbon::parse($request->end_date)->endOfDay()->toDateTimeString();

            $date_search = streamline_date($start_date) . " to " . streamline_date($end_date);
        } else {
            $start_date = Carbon::now()->startOfDay()->toDateTimeString();
            $end_date = Carbon::now()->endOfDay()->toDateTimeString();

            $date_search = "Today";
        }

        // use left join to exclude orders with results
        $ordered_investigations = OrderedInvestigation::where('ordered_investigations.investigation_status', '=', '0')
            ->where('ordered_investigations.payment_status', '=', '0')
            ->whereBetween('ordered_investigations.created_at', [$start_date, $end_date])
            ->select('ordered_investigations.*')
            ->leftJoin('investigation_results', 'investigation_results.order_id', '=', 'ordered_investigations.id')
            ->whereNull('investigation_results.order_id')
            ->orderBy('ordered_investigations.id', 'desc')
            ->get();

        return view('investigations::investigations.delete_investigations', compact('ordered_investigations', 'date_search'));
    }

    public function destroy_ordered_investigations($id)
    {
        $ordered_investigation = OrderedInvestigation::find($id);

        try {
            $ordered_investigation->delete();

            // check if there are any insurance claims available
            $claim = InsuranceClaim::where('order_id', $id)->where('item_type', 3)->first();

            if ($claim) {
                $claim->delete();
            }

            flash("Investigations order has been cancelled.")->success();
        } catch (\Exception $exception) {
            flash("Investigations order has not been cancelled.")->error();
        }

        return redirect('investigations_to_cancel');
    }

    public function view_deleted_ordered_invetigations(Request $request)
    {
        $search_by = $request->search_by;
        $reg_date = $request->reg_date;
        $start_date = $request->start_date;
        $end_date = $request->end_date;
        $filters = [];

        if ($search_by == 0) {
            // last 24 hours
            $last_day = Carbon::now()->subDay();

            $filters[] = ['deleted_at', '>', $last_day];
        } elseif ($search_by == 1) {
            // custom date
            $start_date_search = Carbon::parse($reg_date)->startOfDay()->toDateTimeString();
            $end_date_search = Carbon::parse($reg_date)->endOfDay()->toDateTimeString();

            $filters[] = ['deleted_at', '>', $start_date_search];
            $filters[] = ['deleted_at', '<', $end_date_search];
        } elseif ($search_by == 2) {
            // custom date range
            $start_date_search = Carbon::parse($start_date)->startOfDay()->toDateTimeString();
            $end_date_search = Carbon::parse($end_date)->endOfDay()->toDateTimeString();

            $filters[] = ['deleted_at', '>', $start_date_search];
            $filters[] = ['deleted_at', '<', $end_date_search];
        }

        $deleted_ordered_investigations = DB::table('ordered_investigations')->whereNotNull('deleted_at')->where($filters)->orderBy('id', 'desc')->get();

        return view('investigations::investigations.view_deleted_ordered_investigations', compact('deleted_ordered_investigations'));
    }

    public function restore_deleted_ordered_invetigations($id)
    {
        $ordered_investigation = OrderedInvestigation::withTrashed()->find($id);

        try {
            $ordered_investigation->restore();

            // check if there are any insurance claims available
            $claim = InsuranceClaim::onlyTrashed()->where('order_id', $id)->where('service_type', 3)->first();

            if ($claim) {
                $claim->restore();
            }

            flash("Investigations order has been activated")->success();
        } catch (\Exception $exception) {
            flash("Investigations order has not been activated")->error();
        }

        return redirect('view_deleted_ordered_invetigations');
    }

    public function update_by_ordered_by(Request $request)
    {
        $update = OrderedInvestigation::where('id', $request->id)->update(['ordered_by' => $request->name]);
        return $update;
    }

    public function view_investigation_normal_ranges($investigation_id)
    {
        $ranges = DB::table('investigations_normal_ranges')
            ->where('test_id', $investigation_id)
            ->select('age_group_id', 'female_range', 'male_range')
            ->get();

        $male = [];
        $female = [];

        foreach ($ranges as $range) {
            $male[$range->age_group_id] = $range->male_range;
            $female[$range->age_group_id] = $range->female_range;
        }

        return json_encode([
            "name" => get_name($investigation_id, 'id', 'name', 'investigations'),
            "male" => $male,
            "female" => $female
        ]);
    }

    public function view_specialised_investigation_normal_ranges($investigation_id)
    {
        $ranges = DB::table('investigations_normal_ranges')
            ->where('test_id', $investigation_id)
            ->where('is_specialised_variable', 1)
            ->select('age_group_id', 'female_range', 'male_range')
            ->get();

        $male = [];
        $female = [];

        foreach ($ranges as $range) {
            $male[$range->age_group_id] = $range->male_range;
            $female[$range->age_group_id] = $range->female_range;
        }

        return json_encode([
            "name" => get_name($investigation_id, 'id', 'name', 'investigation_specialised_variables'),
            "male" => $male,
            "female" => $female
        ]);
    }

    public function store_cardio_echo(Request $request)
    {

        $mode_measurements = [
            'LAD' => $request->lad_result,
            'IVS' => $request->ivs_result,
            'FS (%)' => $request->fs_result,
            'AO' => $request->ao_result,
            'LVIDd' => $request->lvidd_result,
            'EF (%)' => $request->ef_result,
            'LA' => $request->la_result,
            'LVPWd' => $request->lvpwd_result,
            'E:A' => $request->ea_result,
            'RVIDd' => $request->rvidd_result,
            'SV' => $request->sv_result,
            'TAPSE' => $request->tapse_result,
            'LVIDs' => $request->lvids_result,
            'RV' => $request->rv_result,
            'RA' => $request->ra_result
        ];

        $mode_measurements = serialize($mode_measurements);

        $doppler_study = [
            'Mitral Valve I' => $request->mitral_valve_insufficiency,
            'Mitral Valve S' => $request->mitral_valve_stenosis,
            'Aortic Valve I' => $request->aortic_valve_insufficiency,
            'Aortic Valve S' => $request->aortic_valve_stenosis,
            'Pulmonary Valve I' => $request->pulmonary_valve_insufficiency,
            'Pulmonary Valve S' => $request->pulmonary_valve_stenosis,
            'Tricuspid Valve I' => $request->tricuspid_valve_insufficiency,
            'Tricuspid Valve S' => $request->tricuspid_valve_stenosis,
            'AV Vmax' => $request->av_vmax,
            'AV Vmean' => $request->av_mean,
            'Mitral EA ratio' => $request->mitral_ea_ratio,
            'TR PG' => $request->tr_pg,
            'RAP' => $request->rap,
        ];

        $doppler_study = serialize($doppler_study);

        $descriptions = [
            'left_ventricle_description' => $request->left_ventricle_description,
            'right_ventricle_description' => $request->right_ventricle_description,
            'right_atrium_description' => $request->right_atrium_description,
            'left_atrium_description' => $request->left_atrium_description,
            'aortic_valve_description' => $request->aortic_valve_description,
            'mitral_valve_description' => $request->mitral_valve_description,
            'pulmonary_valve_description' => $request->pulmonary_valve_description,
            'tricuspid_valve_description' => $request->tricuspid_valve_description,
            'aortic_root_and_arch_description' => $request->aortic_root_and_arch_description,
            'pericardium_description' => $request->pericardium_description,
        ];

        $descriptions = serialize($descriptions);

        $descriptions_order = [
            'left_ventricle_order' => $request->left_ventricle_order,
            'right_ventricle_order' => $request->right_ventricle_order,
            'right_atrium_order' => $request->right_atrium_order,
            'left_atrium_order' => $request->left_atrium_order,
            'aortic_valve_order' => $request->aortic_valve_order,
            'mitral_valve_order' => $request->mitral_valve_order,
            'pulmonary_valve_order' => $request->pulmonary_valve_order,
            'tricuspid_valve_order' => $request->tricuspid_valve_order,
            'aortic_root_and_arch_order' => $request->aortic_root_and_arch_order,
            'pericardium_order' => $request->pericardium_order,
        ];

        $descriptions_order = serialize($descriptions_order);

        //First check if there is already a saved instance
        $cardioCheck = CardioEchoResult::where('episode_id', $request->episode_id)->first();

        if (is_null($cardioCheck)):
            $cardio = new CardioEchoResult();
        else:
            $cardio = CardioEchoResult::find($cardioCheck->id);
        endif;

        $cardio->patient_id = $request->patient_id;
        $cardio->episode_id = $request->episode_id;
        $cardio->template_used = $request->cardio_template_selected;
        $cardio->mode_measurements = $mode_measurements;
        $cardio->doppler_study = $doppler_study;
        $cardio->descriptions = $descriptions;
        $cardio->descriptions_order = $descriptions_order;
        $cardio->comments = $request->cardio_echo_comments;
        $cardio->conclusion = $request->cardio_echo_conclusion;
        $cardio->created_by = Auth::id();

        $cardio->save();

        //Bring staff payments to life
        $echo_investigation = Investigation::where(['slug' => 'echo'])->first();
        record_staff_that_has_performed_the_service($request->patient_id, $request->episode_id, 2, $echo_investigation->id, 0, $cardio->created_by);
        //end of staff payments voodo

        $arr = array(
            'msg' => 'Successfully submit form using ajax',
            'status' => false
        );

        return Response()->json($arr);
    }

    public function print_cardio_echo(Request $request)
    {
        $hospital_information = HospitalInformation::first();
        $patient_id = $request->patient_id;
        $episode_id = $request->episode_id;

        $results = CardioEchoResult::where('episode_id', $episode_id)->first();
        $patient = Patient::find($patient_id);

        $measurements = unserialize($results->mode_measurements);

        $doppler_study = unserialize($results->doppler_study);

        $descriptions = unserialize($results->descriptions);

        $descriptions_order = unserialize($results->descriptions_order);

        $template_details = CardioEchoTemplate::find($results->template_used);

        try {
            $range = unserialize($template_details->range);
        } catch (\Exception $exception) {
            $range = [];
        }

        if (!$descriptions_order) {
            $descriptions_order['left_ventricle_order'] = 1;
            $descriptions_order['right_ventricle_order'] = 2;
            $descriptions_order['right_atrium_order'] = 3;
            $descriptions_order['left_atrium_order'] = 4;
            $descriptions_order['aortic_valve_order'] = 5;
            $descriptions_order['mitral_valve_order'] = 6;
            $descriptions_order['pulmonary_valve_order'] = 7;
            $descriptions_order['tricuspid_valve_order'] = 8;
            $descriptions_order['aortic_root_and_arch_order'] = 9;
            $descriptions_order['pericardium_order'] = 10;
        }

        // create the descriptions array
        $descriptions_array = [];
        $descriptions_array[$descriptions_order['left_ventricle_order']]['name'] = "Left Ventricle";
        $descriptions_array[$descriptions_order['left_ventricle_order']]['value'] = $descriptions['left_ventricle_description'];
        $descriptions_array[$descriptions_order['right_ventricle_order']]['name'] = "Right Ventricle";
        $descriptions_array[$descriptions_order['right_ventricle_order']]['value'] = $descriptions['right_ventricle_description'];
        $descriptions_array[$descriptions_order['right_atrium_order']]['name'] = "Right Atrium";
        $descriptions_array[$descriptions_order['right_atrium_order']]['value'] = $descriptions['right_atrium_description'];
        $descriptions_array[$descriptions_order['left_atrium_order']]['name'] = "Left Atrium";
        $descriptions_array[$descriptions_order['left_atrium_order']]['value'] = $descriptions['left_atrium_description'];
        $descriptions_array[$descriptions_order['aortic_valve_order']]['name'] = "Aortic Valve";
        $descriptions_array[$descriptions_order['aortic_valve_order']]['value'] = $descriptions['aortic_valve_description'];
        $descriptions_array[$descriptions_order['mitral_valve_order']]['name'] = "Mitral Valve";
        $descriptions_array[$descriptions_order['mitral_valve_order']]['value'] = $descriptions['mitral_valve_description'];
        $descriptions_array[$descriptions_order['pulmonary_valve_order']]['name'] = "Pulmonary Valve";
        $descriptions_array[$descriptions_order['pulmonary_valve_order']]['value'] = $descriptions['pulmonary_valve_description'];
        $descriptions_array[$descriptions_order['tricuspid_valve_order']]['name'] = "Tricuspid Valve";
        $descriptions_array[$descriptions_order['tricuspid_valve_order']]['value'] = $descriptions['tricuspid_valve_description'];
        $descriptions_array[$descriptions_order['aortic_root_and_arch_order']]['name'] = "Aortic root and arch";
        $descriptions_array[$descriptions_order['aortic_root_and_arch_order']]['value'] = $descriptions['aortic_root_and_arch_description'];
        $descriptions_array[$descriptions_order['pericardium_order']]['name'] = "Pericardium";
        $descriptions_array[$descriptions_order['pericardium_order']]['value'] = $descriptions['pericardium_description'];

        // sort by the keys and oh lord it's past 6pm
        ksort($descriptions_array);

        $data = [
            'date' => Carbon::parse($results->created_at)->format('dS -m - Y (D)'),
            'names' => $patient->last_name . ' ' . $patient->first_name,
            'patient_number' => $patient->number,
            'hospital_information' => $hospital_information,
            'age' => Carbon::parse($patient->date_of_birth)->diff(now())->format('%y years, %m months and %d days'),
            'sex' => $patient->gender == 1 ? 'Male' : 'Female',
            'lad' => $measurements['LAD'] ?? "",
            'ivs' => $measurements['IVS'] ?? "",
            'fs' => $measurements['FS (%)'] ?? "",
            'aortic' => $measurements['AO'] ?? "",
            'lvidd' => $measurements['LVIDd'] ?? "",
            'ef' => $measurements['EF (%)'] ?? "",
            'la' => $measurements['LA'] ?? "",
            'lvpwd' => $measurements['LVPWd'] ?? "",
            'ea' => $measurements['E:A'] ?? "",
            'rvidd' => $measurements['RVIDd'] ?? "",
            'sv' => $measurements['SV'] ?? "",
            'tapse' => $measurements['TAPSE'] ?? "",
            'lvids' => $measurements['LVIDs'] ?? "",
            'rv' => $measurements['RV'] ?? "",
            'ra' => $measurements['RA'] ?? "",
            'range_LAD' => $range['LAD'] ?? "",
            'range_IVS' => $range['IVS'] ?? "(0.6 - 1.1 cm)",
            'range_FS' => $range['FS (%)'] ?? "(26 - 55)",
            'range_AO' => $range['AO'] ?? "(2.0 - 4.0 cm)",
            'range_LVIDd' => $range['LVIDd'] ?? "(3.5 - 5.7 cm)",
            'range_EF' => $range['EF (%)'] ?? "(55 - 80)",
            'range_LA' => $range['LA'] ?? "(3.0 - 4.0 cm)",
            'range_LVPWd' => $range['LVPWd'] ?? "(0.6 - 1.1 cm)",
            'range_E:A' => $range['E:A'] ?? "",
            'range_RVIDd' => $range['RVIDd'] ?? "",
            'range_SV' => $range['SV'] ?? "",
            'range_TAPSE' => $range['TAPSE'] ?? "",
            'range_LVIDs' => $range['LVIDs'] ?? "(2.5 - 4.0 cm)",
            'range_RV' => $range['RV'] ?? "(2.0 - 4.1 cm)",
            'range_RA' => $range['RA'] ?? "",
            'range_TR PG' => $range['TR PG'] ?? "",
            'mitral_valve_insufficiency' => $doppler_study['Mitral Valve I'] ?? "",
            'mitral_valve_stenosis' => $doppler_study['Mitral Valve S'] ?? "",
            'aortic_valve_insufficiency' => $doppler_study['Aortic Valve I'] ?? "",
            'aortic_valve_stenosis' => $doppler_study['Aortic Valve S'] ?? "",
            'pulmonary_valve_insufficiency' => $doppler_study['Pulmonary Valve I'] ?? "",
            'pulmonary_valve_stenosis' => $doppler_study['Pulmonary Valve S'] ?? "",
            'tricuspid_valve_insufficiency' => $doppler_study['Tricuspid Valve I'] ?? "",
            'tricuspid_valve_stenosis' => $doppler_study['Tricuspid Valve S'] ?? "",
            'av_vmax' => $doppler_study['AV Vmax'] ?? "",
            'av_mean' => $doppler_study['AV Vmean'] ?? "",
            'mitral_ea_ratio' => $doppler_study['Mitral EA ratio'] ?? "",
            'tr_pg' => $doppler_study['TR PG'] ?? "",
            'rap' => $doppler_study['RAP'] ?? "",
            'descriptions_array' => $descriptions_array,
            'comments' => $results->comments,
            'conclusion' => $results->conclusion,
            'created_by' => $results->created_by,
            'created_at' => $results->created_at
        ];

        $pdf = SnappyPDF::loadView('investigations::investigations/print_cardio_echo', $data)
            ->setOrientation('portrait')
            ->setOption('margin-bottom', 7)
            ->setOption('margin-top', 5)
            ->setOption('footer-html', '<i>Printed On ' . date('Y-m-d') . '</i>');

        return $pdf->inline('Cardio-Echo-Results' . date(" d-m-y h:ia") . '.pdf');
    }

    public function cardio_echo_template(Request $request)
    {
        $cardio_echo_conclusion = "";

        if (isset($request->template) && $request->template != 0) {
            $results = CardioEchoTemplate::find($request->template);

            $measurements = unserialize($results->mode_measurements);
            $doppler_study = unserialize($results->doppler_study);
            $descriptions = unserialize($results->descriptions);
            $range = unserialize($results->range);
            $cardio_echo_conclusion = $results->conclusion;

            $id = $request->template;
        } else {
            $measurements = 0;
            $doppler_study = 0;
            $descriptions = 0;
            $range = 0;
            $id = 0;
        }

        $templates = CardioEchoTemplate::pluck('name', 'id')->toArray();
        $templates = [0 => '- select template-'] + $templates;

        return view('investigations::investigations.cardio_echo_template', compact('measurements', 'doppler_study', 'descriptions', 'templates', 'id', 'range', 'cardio_echo_conclusion'));
    }

    public function save_cardio_echo_template(Request $request)
    {
        $mode_measurements = [
            'LAD' => $request->lad_result,
            'IVS' => $request->ivs_result,
            'FS (%)' => $request->fs_result,
            'AO' => $request->ao_result,
            'LVIDd' => $request->lvidd_result,
            'EF (%)' => $request->ef_result,
            'LA' => $request->la_result,
            'LVPWd' => $request->lvpwd_result,
            'E:A' => $request->ea_result,
            'RVIDd' => $request->rvidd_result,
            'SV' => $request->sv_result,
            'TAPSE' => $request->tapse_result,
            'LVIDs' => $request->lvids_result,
            'RV' => $request->rv_result,
            'RA' => $request->ra_result
        ];

        $mode_measurements = serialize($mode_measurements);

        $doppler_study = [
            'Mitral Valve I' => $request->mitral_valve_insufficiency,
            'Mitral Valve S' => $request->mitral_valve_stenosis,
            'Aortic Valve I' => $request->aortic_valve_insufficiency,
            'Aortic Valve S' => $request->aortic_valve_stenosis,
            'Pulmonary Valve I' => $request->pulmonary_valve_insufficiency,
            'Pulmonary Valve S' => $request->pulmonary_valve_stenosis,
            'Tricuspid Valve I' => $request->tricuspid_valve_insufficiency,
            'Tricuspid Valve S' => $request->tricuspid_valve_stenosis,
            'AV Vmax' => $request->av_vmax,
            'AV Vmean' => $request->av_mean,
            'Mitral EA ratio' => $request->mitral_ea_ratio,
            'TR PG' => $request->tr_pg,
            'RAP' => $request->rap,
        ];

        $doppler_study = serialize($doppler_study);

        $descriptions = [
            'left_ventricle_description' => $request->left_ventricle_description,
            'right_ventricle_description' => $request->right_ventricle_description,
            'right_atrium_description' => $request->right_atrium_description,
            'left_atrium_description' => $request->left_atrium_description,
            'aortic_valve_description' => $request->aortic_valve_description,
            'mitral_valve_description' => $request->mitral_valve_description,
            'pulmonary_valve_description' => $request->pulmonary_valve_description,
            'tricuspid_valve_description' => $request->tricuspid_valve_description,
            'aortic_root_and_arch_description' => $request->aortic_root_and_arch_description,
            'pericardium_description' => $request->pericardium_description,
        ];

        $descriptions = serialize($descriptions);

        $ranges = [
            'LAD' => $request->lad_range,
            'IVS' => $request->ivs_range,
            'FS (%)' => $request->fs_range,
            'AO' => $request->ao_range,
            'LVIDd' => $request->lvidd_range,
            'EF (%)' => $request->ef_range,
            'LA' => $request->la_range,
            'LVPWd' => $request->lvpwd_range,
            'E:A' => $request->ea_range,
            'RVIDd' => $request->rvidd_range,
            'SV' => $request->sv_range,
            'TAPSE' => $request->tapse_range,
            'LVIDs' => $request->lvids_range,
            'RV' => $request->rv_range,
            'RA' => $request->ra_range,
            'TR PG' => $request->tr_pg_range
        ];

        $range = serialize($ranges);

        $cardio = CardioEchoTemplate::find($request->id);

        $cardio->mode_measurements = $mode_measurements;
        $cardio->doppler_study = $doppler_study;
        $cardio->descriptions = $descriptions;
        $cardio->range = $range;
        $cardio->conclusion = $request->cardio_echo_conclusion;

        $cardio->save();

        flash($cardio->name . " Echo Cardiology template has been updated")->success();

        return redirect('cardio_echo_template');
    }

    public function fetch_cardio_echo_template($id)
    {
        $results = CardioEchoTemplate::find($id);

        $measurements = unserialize($results->mode_measurements);

        $doppler_study = unserialize($results->doppler_study);

        $descriptions = unserialize($results->descriptions);

        $range = unserialize($results->range);

        return json_encode([
            'LAD' => $measurements['LAD'],
            'IVS' => $measurements['IVS'],
            'FS (%)' => $measurements['FS (%)'],
            'AO' => $measurements['AO'],
            'LVIDd' => $measurements['LVIDd'],
            'EF (%)' => $measurements['EF (%)'],
            'LA' => $measurements['LA'],
            'LVPWd' => $measurements['LVPWd'],
            'E:A' => $measurements['E:A'],
            'RVIDd' => $measurements['RVIDd'],
            'SV' => $measurements['SV'],
            'TAPSE' => $measurements['TAPSE'],
            'LVIDs' => $measurements['LVIDs'],
            'RV' => $measurements['RV'],
            'RA' => $measurements['RA'],
            'Mitral Valve I' => $doppler_study['Mitral Valve I'],
            'Mitral Valve S' => $doppler_study['Mitral Valve S'],
            'Aortic Valve I' => $doppler_study['Aortic Valve I'],
            'Aortic Valve S' => $doppler_study['Aortic Valve S'],
            'Pulmonary Valve I' => $doppler_study['Pulmonary Valve I'],
            'Pulmonary Valve S' => $doppler_study['Pulmonary Valve S'],
            'Tricuspid Valve I' => $doppler_study['Tricuspid Valve I'],
            'Tricuspid Valve S' => $doppler_study['Tricuspid Valve S'],
            'AV Vmax' => $doppler_study['AV Vmax'],
            'AV Vmean' => $doppler_study['AV Vmean'],
            'Mitral EA ratio' => $doppler_study['Mitral EA ratio'],
            'TR PG' => $doppler_study['TR PG'],
            'RAP' => $doppler_study['RAP'],
            'left_ventricle_description' => $descriptions['left_ventricle_description'],
            'right_ventricle_description' => $descriptions['right_ventricle_description'],
            'right_atrium_description' => $descriptions['right_atrium_description'],
            'left_atrium_description' => $descriptions['left_atrium_description'],
            'aortic_valve_description' => $descriptions['aortic_valve_description'],
            'mitral_valve_description' => $descriptions['mitral_valve_description'],
            'pulmonary_valve_description' => $descriptions['pulmonary_valve_description'],
            'tricuspid_valve_description' => $descriptions['tricuspid_valve_description'],
            'aortic_root_and_arch_description' => $descriptions['aortic_root_and_arch_description'],
            'pericardium_description' => $descriptions['pericardium_description'],
            'conclusion' => $results->conclusion,
            'range_LAD' => $range['LAD'],
            'range_IVS' => $range['IVS'],
            'range_FS (%)' => $range['FS (%)'],
            'range_AO' => $range['AO'],
            'range_LVIDd' => $range['LVIDd'],
            'range_EF (%)' => $range['EF (%)'],
            'range_LA' => $range['LA'],
            'range_LVPWd' => $range['LVPWd'],
            'range_E:A' => $range['E:A'],
            'range_RVIDd' => $range['RVIDd'],
            'range_SV' => $range['SV'],
            'range_TAPSE' => $range['TAPSE'],
            'range_LVIDs' => $range['LVIDs'],
            'range_RV' => $range['RV'],
            'range_RA' => $range['RA'],
            'range_TR PG' => $range['TR PG'],
        ]);
    }

    public function create_cardio_echo_template(Request $request)
    {
        $mode_measurements = [
            'LAD' => "",
            'IVS' => "",
            'FS (%)' => "",
            'AO' => "",
            'LVIDd' => "",
            'EF (%)' => "",
            'LA' => "",
            'LVPWd' => "",
            'E:A' => "",
            'RVIDd' => "",
            'SV' => "",
            'TAPSE' => "",
            'LVIDs' => "",
            'RV' => "",
            'RA' => ""
        ];

        $mode_measurements = serialize($mode_measurements);

        $doppler_study = [
            'Mitral Valve I' => "",
            'Mitral Valve S' => "",
            'Aortic Valve I' => "",
            'Aortic Valve S' => "",
            'Pulmonary Valve I' => "",
            'Pulmonary Valve S' => "",
            'Tricuspid Valve I' => "",
            'Tricuspid Valve S' => "",
            'AV Vmax' => "",
            'AV Vmean' => "",
            'Mitral EA ratio' => "",
            'TR PG' => "",
            'RAP' => "",
        ];

        $doppler_study = serialize($doppler_study);

        $descriptions = [
            'left_ventricle_description' => "",
            'right_ventricle_description' => "",
            'right_atrium_description' => "",
            'left_atrium_description' => "",
            'aortic_valve_description' => "",
            'mitral_valve_description' => "",
            'pulmonary_valve_description' => "",
            'tricuspid_valve_description' => "",
            'aortic_root_and_arch_description' => "",
            'pericardium_description' => "",
        ];

        $descriptions = serialize($descriptions);

        CardioEchoTemplate::firstOrCreate([
            'name' => $request->name,
            'mode_measurements' => $mode_measurements,
            'doppler_study' => $doppler_study,
            'descriptions' => $descriptions,
            'conclusion' => ''
        ]);

        flash($request->name . " Echo Cardiology template has been created")->success();

        return redirect('cardio_echo_template');
    }

    public function display_specialised_variables_pop_up(Request $request)
    {
        $id = $request->id;
        $patient_id = $request->patient_id;

        $specialised_results = DB::table('investigation_specialised_results')
            ->where('id', $id)
            ->get()
            ->first();

        if (!$specialised_results) {
            return 0;
        }

        $html_text = "<table class='table table-bordered table-striped'>";

        $html_text .= "<tr>";
        $html_text .= "<th style='color: black' class='text-center'> Name </th>";
        $html_text .= "<th style='color: black' class='text-center'> Results </th>";
        $html_text .= "<th style='color: black' class='text-center'> Reference Ranges </th>";
        $html_text .= "<th style='color: black' class='text-center'> Comments </th>";
        $html_text .= "</tr>";

        $variable_id_array = explode(',', $specialised_results->specialised_variable_id);
        $variable_value_array = explode(',', $specialised_results->value);
        $variable_comment_array = explode(',', $specialised_results->comment);

        for ($i = 0; $i < count($variable_id_array); $i++) {
            $html_text .= "<tr>";

            $html_text .= "<td>" . get_name($variable_id_array[$i], 'id', 'name', 'investigation_specialised_variables') . "</td>";

            $html_text .= "<td>" . $variable_value_array[$i] . "</td>";

            $html_text .= "<td>";
            if (get_name($variable_id_array[$i], 'id', 'range_type', 'investigation_specialised_variables') == 1) {
                $html_text .= get_dynamic_normal_range_specialized($variable_id_array[$i], get_patient_age_group($patient_id), get_name($patient_id, 'id', 'gender', 'patients'));
            } else {
                $html_text .= get_name($variable_id_array[$i], 'id', 'normal_ranges', 'investigation_specialised_variables');
            }
            $html_text .= "</td>";

            $html_text .= "<td>" . $variable_comment_array[$i] . "</td>";

            $html_text .= "</tr>";
        }

        $html_text .= "</table>";

        return json_encode([
            "html" => $html_text
        ]);
    }

    public function remove_investigation_with_no_result($inv_id, $order_id)
    {
        $is_order_deleted = false;
        $ordered_investigation = DB::table('ordered_investigations')->where('id', $order_id)->first();
        $investigation_results = DB::table('investigation_results')->where('order_id', $order_id)->first();

        if ($ordered_investigation->payment_status == 0 && $ordered_investigation->inpatient_bill_generated == 0) {
            // delete from the ordered investigations
            $investigation_ids = explode(",", $ordered_investigation->investigation_id);
            $urgent_ids = explode(",", $ordered_investigation->urgent_ids);
            $for_inpatient = explode(",", $ordered_investigation->for_inpatient);
            $comments = explode(",", $ordered_investigation->order_comments);

            // check if this is a solo investigation
            if (count($investigation_ids) == 1 && $investigation_ids[0] == $inv_id) {
                // cancel the whole order
                $ordered_investigation_delete = OrderedInvestigation::find($order_id);

                if ($ordered_investigation_delete) {
                    $ordered_investigation_delete->delete();
                    $is_order_deleted = true;
                }
            } else {
                $key = array_search($inv_id, $investigation_ids);

                if ($key !== false) {
                    unset($investigation_ids[$key]);
                    unset($for_inpatient[$key]);
                    unset($comments[$key]);

                    // since urgent ids does not have same size as others handle it alone
                    $urgent_key = array_search($inv_id, $urgent_ids);

                    if ($urgent_key !== false) {
                        unset($urgent_ids[$urgent_key]);
                    }

                    $update = OrderedInvestigation::where('id', $order_id)
                        ->update([
                            'investigation_id' => implode(",", $investigation_ids),
                            'urgent_ids' => implode(",", $urgent_ids),
                            'for_inpatient' => implode(",", $for_inpatient),
                            'order_comments' => implode(",", $comments)
                        ]);
                }
            }

            // delete from the investigation results
            $investigation_id = explode(",", $investigation_results->investigation_id);
            $value = explode(",", $investigation_results->value);
            $per_investigation = explode(",", $investigation_results->per_investigation);
            $normal_ranges = explode(",", $investigation_results->normal_ranges);
            $for_inpatient = explode(",", $investigation_results->for_inpatient);
            $comment = explode(",", $investigation_results->comment);

            if (count($investigation_id) == 1 && $investigation_id[0] == $inv_id) {
                // cancel the whole order
                $investigation_results_delete = InvestigationResults::find($order_id);

                if ($investigation_results_delete) {
                    $investigation_results_delete->delete();
                }
            } else {
                $key = array_search($inv_id, $investigation_id);

                if ($key !== false) {
                    unset($investigation_id[$key]);
                    unset($value[$key]);
                    unset($per_investigation[$key]);
                    unset($for_inpatient[$key]);
                    unset($comment[$key]);
                    unset($normal_ranges[$key]);

                    $update = InvestigationResults::where('order_id', $order_id)
                        ->update([
                            'investigation_id' => implode(",", $investigation_id),
                            'value' => implode(",", $value),
                            'per_investigation' => implode(",", $per_investigation),
                            'normal_ranges' => implode(",", $normal_ranges),
                            'for_inpatient' => implode(",", $for_inpatient),
                            'comment' => implode(",", $comment)
                        ]);
                }
            }

            flash("Investigation has been removed")->success();
        } else {
            flash("This investigation order has already been paid. Please first cancel the receipt before removing an investigation")->error();
        }

        if ($is_order_deleted) {
            return redirect('/investigations/view_lab_results/');
        } else {
            if ($ordered_investigation->order_type == 'Lab') {
                return redirect('/investigations/view_lab_results_details/' . $order_id);
            } else {
                if ($investigation_results) {
                    return redirect('/investigations/view_patient_investigation/' . $investigation_results->id);
                } else {
                    // just in case there is no result redirect to home
                    return redirect('/investigations/home');
                }
            }
        }
    }

    public function edit_specialised_variables_ranking($id)
    {
        $specialized_variables = InvestigationSpecialisedVariable::where('investigation_id', $id)->orderBy('ranking', 'asc')->get();

        return view('investigations::investigations.edit_specialised_variables_ranking', compact('specialized_variables', 'id'));
    }

    public function save_specialised_variables_ranking(Request $request)
    {
        $ids = $request->spec_id;
        $rankings = $request->ranking;

        $logged_in_user_id = Auth::user()->id;

        for ($i = 0; $i < count($ids); $i++) {
            $investigation_specialised_variable = InvestigationSpecialisedVariable::find($ids[$i]);

            $investigation_specialised_variable->ranking = $rankings[$i];
            $investigation_specialised_variable->updated_by = $logged_in_user_id;

            $investigation_specialised_variable->save();
        }

        flash("Specialised variables rankings have been updated")->success();
        return redirect('investigations');
    }

    public function reverse_receiving_investigations($order_id)
    {
        $ordered_investigation = OrderedInvestigation::find($order_id);

        $ordered_investigation->request_received_date = null;
        $ordered_investigation->specimen = null;
        $ordered_investigation->specimen_status = null;
        $ordered_investigation->request_received = 0;
        $ordered_investigation->request_received_by = null;

        if ($ordered_investigation->save()) {
            flash("Investigation order has been un-received")->success();
        } else {
            flash("An error occured. Please try again")->success();
        }

        return redirect('/investigations/view_lab_results/');
    }
}