<?php

namespace Modules\Investigations\Http\Controllers;

use Illuminate\Http\Request;
use Streamline\Models\Dental;
use Streamline\Models\DentalUsage;
use Streamline\Models\Requisition;
use Illuminate\Support\Facades\Auth;
use Streamline\Models\ChartOfAccount;
use Streamline\Models\HospitalInformation;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;
use Illuminate\Database\QueryException;

class DentalController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
        $this->middleware('permission:dental-list', ['only' => ['index']]);
        $this->middleware('permission:dental-create', ['only' => ['create', 'store']]);
        $this->middleware('permission:dental-edit', ['only' => ['edit', 'update', 'edit_all', 'update_all']]);
        $this->middleware('permission:dental-delete', ['only' => ['destroy', 'inactive', 'activate']]);
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $dentals = Dental::orderBy('name', 'asc')->paginate(2000);

        return view('investigations::dentals.index', compact('dentals'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        $cost_of_goods_accounts = ChartOfAccount::where(['type' => 7])
            ->orderBy('name', 'asc')->pluck('name', 'id')->toArray();
        $expense_accounts = ChartOfAccount::where(['type' => 2])
            ->orderBy('name', 'asc')->pluck('name', 'id')->toArray(); 
        $payables_accounts = ChartOfAccount::where(['type' => 6])
            ->orWhere(['type' => 9])->orderBy('name', 'asc')->pluck('name', 'id')->toArray(); 

        $cost_of_goods_accounts = ['' => '- select -'] + $cost_of_goods_accounts;
        $expense_accounts = ['' => '- select -'] + $expense_accounts;
        $payables_accounts = ['' => '- select -'] + $payables_accounts;

        return view('investigations::dentals.create', compact('cost_of_goods_accounts', 'expense_accounts', 'payables_accounts'));
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        request()->validate([
            'name' => 'required'
        ]);

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

        $dental->name = $request->name;
        $dental->expenses_account_id = $request->expenses_account_id;
        $dental->payables_account_id = $request->payables_account_id;
        $dental->cost_of_goods_account = $request->cost_of_goods_account;
        $dental->created_by = $logged_in_user_id;
        $dental->updated_by = $logged_in_user_id;
        try {
            $dental->save();
            flash($request->name . " Dental has been saved")->success();
            return redirect("/dentals/");
        } catch (QueryException $e) {
            flash("An error occurred")->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)
    {
        $dental = Dental::where(['id' => $id])->first();

        $expense_accounts = ChartOfAccount::where(['type' => 2])
            ->orderBy('name', 'asc')->pluck('name', 'id')->toArray(); 
        $payables_accounts = ChartOfAccount::where(['type' => 6])
            ->orWhere(['type' => 9])->orderBy('name', 'asc')->pluck('name', 'id')->toArray(); 

        $expense_accounts = ['' => '- select -'] + $expense_accounts;
        $payables_accounts = ['' => '- select -'] + $payables_accounts;

        if (!$dental) {
            flash()->error("There is no such dental");
            return redirect('/dentals/');
        } else {
            return view('investigations::dentals.edit', compact('dental', 'expense_accounts', 'payables_accounts'));
        }
    }

    /**
     * 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'
        ]);

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

        $dental = Dental::find($id);
        $dental->name = $request->name;
        $dental->expenses_account_id = $request->expenses_account_id;
        $dental->payables_account_id = $request->payables_account_id;
        $dental->updated_by = $logged_in_user_id;

        try {
            $dental->save();
            flash($request->name . " dental has been updated")->success();
            return redirect("/dentals/");
        } 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)
    {
        $dental = Dental::find($id);

        if ($dental->delete()) {
            flash("dental has been deleted.")->success();
            return redirect('/dentals/');
        }
    }

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

        if (count($dentals) < 1) {
            flash()->error("There is no inactive dental item");
            return redirect('/dentals/');
        } else {
            return view('investigations::dentals.inactive', compact('dentals'));
        }
    }

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

        if ($dental->restore()) {
            flash("dental has been activated.")->success();
            return redirect('/dentals/inactive');
        }
    }

    /**
     * Search a resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function search(Request $request)
    {
        $query_name = $request->query_name;
        $query_active = $request->query_active;

        if ($query_name != "") {
            $dentals = Dental::where([
                ['active', '=', $query_active],
                ['name', 'LIKE', '%' . $query_name . '%']
            ])
                ->orderBy('name', 'asc')
                ->paginate(10)
                ->setPath('');

            $dentals->appends(array(
                'query_name' => $query_name,
                'query_active' => $query_active
            ));

            if (count($dentals)) {
                if ($query_active) {
                    return view('investigations::dentals.index', compact('dentals')) //;
                        ->withDetails($dentals)
                        ->withQuery($query_name, $query_active);
                } else {
                    return view('investigations::dentals.inactive', compact('dentals')) //;
                        ->withDetails($dentals)
                        ->withQuery($query_name, $query_active);
                }
            }
        }
        flash()->error("No Details found. Try searching again!");
        return redirect('/dentals/');
    }

    /**
     * Display a listing of the active resources for bulk editing.
     *
     * @return \Illuminate\Http\Response
     */
    public function edit_all()
    {
        $dentals = Dental::orderBy('name', 'asc')->paginate(2000);

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

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

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

        $id_array = $request->id;
        $name_array = $request->name;

        for ($x = 0; $x < count($id_array); $x++) {
            $dental = Dental::find($id_array[$x]);

            $dental->name = $name_array[$x];
            $dental->updated_by = $logged_in_user_id;

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

        flash("Dentals have been updated")->success();
        return redirect("/dentals/");
    }

    public function get_dentals()
    {
        //code to be returned to view
        $code = "<option> -- select -- </option>";

        $dentals = Dental::orderBy('name', 'asc')->get();

        foreach ($dentals as $dental) {
            $code .= "<option value='" . $dental->id . "'>" . $dental->name . "</option>";
        }

        return $code;
    }

    public function dental_usage_report(Request $request) 
    {
        $dentals = Dental::orderBy('name', 'asc')->get();
        $hospital_information = HospitalInformation::first();
        
        $dental_options = DB::table('dentals')->orderBy('name', 'asc')->pluck('name', 'id')->prepend('- All Dentals - ', 'all_dentals');

        $search_by = $request->search_by;
        $reg_date = $request->reg_date;
        $start_date = $request->start_date;
        $end_date = $request->end_date;
        $filters = [];
        $search_string = "";

        if ($search_by == 0) {
            // last 24 hours
            $last_day = Carbon::now()->subDay();
            array_push($filters, ['start_date', '>', $last_day]);
            if ($request->dental_id != 'all_dentals') {
                array_push($filters, ['dental_id', '=', $request->dental_id]);
            }
            $search_string = "<h4 class='label label-info'>Showing results of ".streamline_date($last_day)."</h4>";
        } elseif ($search_by == 1) {
            // custom date
            if (is_null($request->reg_date)) { 
                flash('Please select a date')->error();
                return redirect()->back(); 
            }
            $selected_date_filter = Carbon::createFromFormat('d/m/Y', $request->reg_date)->toDateString();
            array_push($filters, ['start_date', $selected_date_filter]);
            if ($request->dental_id != 'all_dentals') {
                array_push($filters, ['dental_id', '=', $request->dental_id]);
            }
            $search_string = "<h4 class='label label-info'>Showing results of ".streamline_date($selected_date_filter)."</h4>";
        } elseif ($search_by == 2) {
            // custom date range
            if (is_null($start_date) || is_null($end_date)) {
                flash('Please select a date')->error(); 
                return redirect()->back(); 
            }
            $start_date_search = Carbon::createFromFormat('d/m/Y', $start_date)->startOfDay()->toDateTimeString();
            $end_date_search = Carbon::createFromFormat('d/m/Y', $end_date)->endOfDay()->toDateTimeString();

            array_push($filters, ['start_date', '>', $start_date_search]);
            array_push($filters, ['end_date', '<', $end_date_search]);
            if ($request->dental_id != 'all_dentals') {
                array_push($filters, ['dental_id', '=', $request->dental_id]);
            }
            $search_string = "<h4 class='label label-info'>Showing between ".streamline_date($start_date_search). " and ".streamline_date($end_date_search)."</h4>";
        }

        $dental_usages = (!empty($search_by) && !empty($end_date) && !empty($start_date) && !empty($reg_date))? DentalUsage::where($filters)->orderBy('id','desc')->limit(500)->get(): DentalUsage::orderBy('id','desc')->limit(500)->get();
        return view('investigations::dentals.dental_usage_report', compact('dentals', 'hospital_information', 'dental_usages', 'dental_options', 'search_string'));
        
    }

    public function dental_requisitions(Request $request) 
    {
        $results = Dental::orderBy('name','asc')->get();
        $names_array = Dental::orderBy('name')->distinct()->pluck('name');
        $labs = Dental::orderBy('name')->pluck('name', 'id');

        $date_filter = [];
        if(isset($request->start_date) && isset($request->end_date)){

            if (isset($request->quotation_type)) {
                $item_type = $request->quotation_type;
                $start_date = Carbon::parse($request->start_date)->startOfDay()->toDateTimeString();
                $end_date = Carbon::parse($request->end_date)->endOfDay()->toDateTimeString();

                array_push($date_filter, ['created_at', '>', $start_date]);
                array_push($date_filter, ['created_at', '<', $end_date]);
            }
        } else {
            $date_from = Carbon::today()->subDays(30)->format('Y-m-d');
            $date_to = Carbon::today()->addDays(1)->format('Y-m-d');
            array_push($date_filter, ['created_at', '>', $date_from]);
            array_push($date_filter, ['created_at', '<', $date_to]);
        }
        $previous_requisitions_results = DB::table('requisitions')->where('quotation_type_id', '=', 3)->where($date_filter)->orderBy('created_at','desc')->get();

        return view('investigations::dentals.dental_requisition', compact('results', 'names_array', 'labs', 'previous_requisitions_results'));
    }

    public function dental_usage_listing() 
    {
        $dentals = Dental::orderBy('name', 'asc')->get();
        $hospital_information = HospitalInformation::first();        
        $dental_usages = DentalUsage::orderBy('id','desc')->limit(20)->get();

        return view('investigations::dentals.dental_usage', compact('dentals', 'hospital_information', 'dental_usages'));
    }

    public function store_dental_usage(Request $request)
    {
        $dental_items_array = $request->labItem;
        $available_qty_array = $request->availableQty;
        $available_qty_unit_cost_array = $request->unitCost;
        $usage_qty_array = $request->requiredQty;
        $usage_qty_cost_array = $request->totalCost;

        if($request->dates == 'today'){
            $start = Carbon::now()->startOfDay()->toDateTimeString();
            $end = Carbon::now()->endOfDay()->toDateTimeString();
        }else{
            $start = Carbon::parse($request->start_date)->endOfDay()->toDateTimeString();
            $end = Carbon::parse($request->end_date)->endOfDay()->toDateTimeString();
        }

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

            if($dental_items_array[$i]){
                $dental_usage = new DentalUsage;
                $dental_usage->dental_id = $dental_items_array[$i];
                $dental_usage->unit_cost_price = $unit_cost = $available_qty_unit_cost_array[$i];
                $dental_usage->available_quantity = $available_qty_array[$i];
                $dental_usage->available_quantity_cost = ((int)$unit_cost * $available_qty_array[$i]);
                $dental_usage->usage_quantity = $usage_qty_array[$i];
                $dental_usage->usage_quantity_cost = $usage_qty_cost_array[$i];
                $dental_usage->remaining_quantity = $remaining_qty = ((int)$available_qty_array[$i] - (int)$usage_qty_array[$i]);
                $dental_usage->remaining_quantity_cost = ($remaining_qty * $unit_cost);
                $dental_usage->created_by = Auth::id();
                $dental_usage->start_date = $start;
                $dental_usage->end_date = $end;

                if(!($remaining_qty < 0)){
                    $dental = Dental::find($dental_items_array[$i]);
                    $dental->pharmacy_stock = ($dental->pharmacy_stock - (int)$usage_qty_array[$i]);
                    $dental_usage->save();
                    $dental->save();
                }else{
                    flash('Item\'s '.get_name($dental_items_array[$i], 'id', 'name', 'labs').' requested use quantity exceeds what is available.');
                }
            }
        }
        flash('Dentals to be used from '.streamline_date($start).' to '.streamline_date($end).' have saved successfully')->success();
        return redirect()->route('dentals.usage_listing');

    }

    public function get_dental_quantity(Request $request){
        $dental_item = Dental::where('id', $request->id)->first();
        return $dental_item;
    }

    public function dentals_requisition_search(Request $request)
    {
        $item_type = $request->item_type;
        $item_ids_array = $request->items_ids;
        $results = null;
        $filters = [];
        $items = null;

        $results = Dental::whereIn('id', $item_ids_array)->orderBy('name','asc')->get();
        $labs = Dental::orderBy('name')->pluck('name', 'id');

        $date_filter = [];
        if(isset($request->start_date) && isset($request->end_date)){

            if (isset($request->quotation_type)) {
                $item_type = $request->quotation_type;
                $start_date = Carbon::parse($request->start_date)->startOfDay()->toDateTimeString();
                $end_date = Carbon::parse($request->end_date)->endOfDay()->toDateTimeString();

                array_push($date_filter, ['created_at', '>', $start_date]);
                array_push($date_filter, ['created_at', '<', $end_date]);
            }
        } else {
            $date_from = Carbon::today()->subDays(30)->format('Y-m-d');
            $date_to = Carbon::today()->addDays(1)->format('Y-m-d');
            array_push($date_filter, ['created_at', '>', $date_from]);
            array_push($date_filter, ['created_at', '<', $date_to]);
        }
        $previous_requisitions_results = DB::table('requisitions')->where('quotation_type_id', '=', 5)->where($date_filter)->orderBy('created_at','desc')->get();

        return view('investigations::dentals.dental_requisition',compact('items','item_type','labs','results','previous_requisitions_results'));
    }

    public function store_dental_requisitions(Request $request)
    {
        $drug_id_array = $request->drug_id;
        $quantity_array = $request->quantity;
        $item_type = $request->item_type;
        $user_id = auth()->user()->id;

        /* return back  if no quantity has been filled */
        if (array_sum($quantity_array) < 1) {
            flash('Please insert some values!')->error();
            return redirect()->back()->withInput();
        }

        if (isset($request->complete_request)) {
            $filtered_drugs_array = [];
            $filtered_quantities_array = [];
            $associative_requested_drugs_array = [];
            for ($i=0; $i < count($drug_id_array) ; $i++) { 
                if ($quantity_array[$i] != "") {
                    $associative_requested_drugs_array[$drug_id_array[$i]] = $quantity_array[$i];
                    $filtered_drugs_array[] = $drug_id_array[$i];
                    $filtered_quantities_array[] = $quantity_array[$i];
                }
            }
            $new_requisition = new Requisition;
            $new_requisition->quotation_type_id = $item_type;
            $new_requisition->drug_id = implode(',', $filtered_drugs_array);
            $new_requisition->quantity_requested = implode(',', $filtered_quantities_array);
            $new_requisition->created_by = $user_id;            
            $new_requisition->save();
           
            flash('Requisition number ' . $new_requisition->id . ' made successfully')->success();
            return redirect('/dentals');
        }
    }
}