<?php

namespace Modules\Patients\Http\Controllers;

use Carbon\Carbon;
use Illuminate\Http\Request;
use Streamline\Models\Alert;
use Streamline\Models\Allergy;
use Streamline\Models\Clinic;
use Streamline\Models\Diagnosis;
use Streamline\Models\DrugCategory;
use Streamline\Models\FamilyPlanningMethod;
use Streamline\Models\FamilyRelationship;
use Streamline\Models\MaritalStatus;
use Streamline\Models\Observation;
use Streamline\Models\Occupation;
use Streamline\Models\PatientCategory;
use Streamline\Models\SmartTriage;
use Streamline\Models\Triage;
use Streamline\Models\TriageNews;
use Streamline\Models\EmergencySign;
use Streamline\Models\PrioritySign;
use Streamline\Models\Patient;
use Streamline\Models\PatientEpisode;
use Streamline\Models\Symptom;
use Illuminate\Support\Facades\Auth;
use Streamline\Models\ReferralHospital;
use Illuminate\Support\Facades\Validator;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Session;
use Streamline\Models\GenderBasedViolence;
use Streamline\Models\HivGenderBaseViolence;
use Illuminate\Database\QueryException;

class TriageController extends Controller
{

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function index()
    {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');

        $triage_results = DB::table('triage')
            ->where('patient_id', '=', $patient_id)
            ->where('episode_id', '=', $episode_id)
            ->first();

        if ($triage_results) {
            //triage already performed
            return redirect('triage/' . $triage_results->id);
        } else {
            //triage not performed
            return redirect("/triage/create");
        }
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function create()
    {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');
        $patient = Patient::where('id', $patient_id)->first();

        if (session()->get('triage_without_etat') == 1) {
            $triage_without_etat = true;
        } else {
            $triage_without_etat = false;
        }

        $clinics = DB::table('clinics')->where('available', 1)->whereNull('deleted_at')->orderBy('name')->pluck("name", "id")->toArray();
        $referral_hospitals = DB::table('referral_hospitals')->whereNull('deleted_at')->orderBy('name')->pluck("name", "id")->toArray();
        $symptoms = DB::table('symptoms')->whereNull('deleted_at')->orderBy('name')->pluck("name", "id")->toArray();
        $family_planning_methods = DB::table('family_planning_methods')->orderBy('name')->pluck("name", "id")->toArray();

        $clinics = ['' => '- select -'] + $clinics;
        $referral_hospitals = ['' => '- select -'] + $referral_hospitals;
        $symptoms = ['' => '- select -'] + $symptoms;
        $family_planning_methods = ['' => '- select -'] + $family_planning_methods;

        $symptoms_periods = ['' => '- select -', 'Hours' => 'Hours', 'Days' => 'Days', 'Weeks' => 'Weeks', 'Months' => 'Months', 'Years' => 'Years'];

        //determine the age group
        $today = date("Y-m-d");
        $dob = isset($patient) ? Carbon::parse($patient->date_of_birth) : null;
        $age_diff_days = isset($patient) ?  $dob->diffInDays(Carbon::now()) : null;
        $age_diff_months = isset($patient) ? $age_diff_days / 30.436875 : null;
        $difference = days_months_years($dob, $today);

        $days = $difference[0];
        $months = $difference[1];
        $years = $difference[2];

        // create default age group
        $age_group_display = '';
        $age_group = 0;
        $age_group_id = 0;

        $age_group_records = DB::table('age_groups')->whereNull('deleted_at')->get()->toArray();

        foreach ($age_group_records as $age_group_record) {
            // turn into days
            if ($age_group_record->age_type == 3) {
                // days
                $first_day = $age_group_record->from_age;
                $last_day = $age_group_record->to_age;
            } elseif ($age_group_record->age_type == 2) {
                // months
                $first_day = $age_group_record->from_age * 30;
                $last_day = $age_group_record->to_age * 30;
            } else {
                // years
                $first_day = $age_group_record->from_age * 365;
                $last_day = $age_group_record->to_age * 365;
            }

            if (between($age_diff_days, $first_day, $last_day)) {
                $age_group_display = $age_group_record->name;
                $age_group_id = $age_group_record->id;
                break;
            }
        }

        if (between($days, 0, 28) && between($months, 0, 0) && between($years, 0, 0)) {
            $age_group = 1;
            $default_age_group_display = "0 - 28 Days";
        } elseif (between($days, 0, 31) && between($months, 1, 12) && between($years, 0, 0)) {
            $age_group = 2;
            $default_age_group_display = "1 - 12 Months";
        } elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 1, 5)) {
            $age_group = 3;
            $default_age_group_display = "1 - 5 Years";
        } elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 6, 12)) {
            $age_group = 4;
            $default_age_group_display = "6 - 12 Years";
        } elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 13, 200)) {
            $age_group = 5;
            $default_age_group_display = "> 12 Years";
        }

        // if none of the age groups has a fit lets use the default
        if ($age_group_display == '') {
            $age_group_display = $default_age_group_display;
        }

        $observations = DB::table('observations')->whereNull('deleted_at')->whereRaw('FIND_IN_SET(' . $age_group_id . ',age_group)')->get();

        return view('patients::triage.create', compact('episode_id', 'age_group_display', 'age_group', 'symptoms', 'years', 'patient', 'family_planning_methods', 'referral_hospitals', 'clinics', 'patient_id',
            'episode_id', 'observations', 'symptoms_periods', 'age_diff_months', 'triage_without_etat'));
    }

    /**
     * Store a newly created resource in storage.
     *
     */
    public function store(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'triage_grade' => 'required',
            'referral_hospital' => 'required',
            'clinic_allocation' => 'required',
            'patient_id' => 'required',
            'episode_id' => 'required|unique:triage',
            'observationsValues' => ['required_unless:any_tb_sysmptoms, 1'],
            'mother_hiv_positive' => 'boolean',
            'has_been_sick_last_3_months' => ['required_if:mother_hiv_positive,true,boolean'],
            'has_recurring_skin_problem' => ['required_if:mother_hiv_positive,true,boolean'],
            'has_lost_weight_last_3_months' => ['required_if:mother_hiv_positive,true,boolean'],
            'has_had_tb' => ['required_if:mother_hiv_positive,true,boolean'],
            'is_growing_well' => ['required_if:mother_hiv_positive,true,boolean'],
        ]);

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

            $triage = new Triage;

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

            // @TODO First check if there is a triage with the same patient and the same episode Alert the user and then not proceed
            $emergency_signs = false;

            // Receiving the emergency signs from here
            if (isset($request->cyanosis)) :
                $emergency_signs = true;

                // Airway
                $cyanosis = $request->cyanosis;
                $stridor = $request->stridor;
                $severe_distress = $request->severe_distress;

                // Circulation
                $refill = $request->refill;
                $severe_bleeding = $request->severe_bleeding;
                $weak_fast_pulse = $request->weak_fast_pulse;

                // neurological
                $coma = $request->coma;
                $convulsing_now = $request->convulsing_now;

                // Dehydration
                $lethargy = $request->lethargy;

                $airway_array = array(
                    __('layout.cyanosis') => $cyanosis,
                    __('layout.stridor_breathing_choking') => $stridor,
                    __('layout.severe_resp_distress') => $severe_distress
                );

                $circulation_array = array(
                    __('layout.capillary_refill_seconds') => $refill,
                    __('layout.severe_bleeding') => $severe_bleeding,
                    __('layout.weak_fast_pulse') => $weak_fast_pulse
                );

                $neurological_array = array(
                    __('layout.coma') => $coma,
                    __('layout.convulsing_now') => $convulsing_now
                );

                $dehydration_array = array(
                    __('layout.diarrhoea_lethargy_sunken_eyes') => $lethargy
                );

                $airway = serialize($airway_array);
                $circulation = serialize($circulation_array);
                $neurological = serialize($neurological_array);
                $dehydration = serialize($dehydration_array);
            endif;


            // Receiving the priority signs
            $priority_signs = array();

            isset($request->trauma) ? $priority_signs[] = __('layout.significant_trauma') : '';
            isset($request->severe_pain) ? $priority_signs[] = __('layout.severe_pain') : '';
            isset($request->oedema) ? $priority_signs[] = __('layout.oedema_both_feet') : '';
            isset($request->surgical_condition) ? $priority_signs[] = __('layout.urgent_surgical_condition') : '';
            isset($request->continuously_irritable) ? $priority_signs[] = __('layout.restless_irritable') : '';
            isset($request->severe_wasting) ? $priority_signs[] = __('layout.malnutrition_visible_wasting') : '';
            isset($request->severe_pallor) ? $priority_signs[] = __('layout.severe_pallor') : '';
            isset($request->burns) ? $priority_signs[] = __('layout.burns_major') : '';
            $priority_array = serialize($priority_signs);


            // Receiving family planning
            $too_sick = $request->too_sick;
            $sexually_active = $request->sexually_active;
            $pregnant = $request->pregnant;
            $menopause = $request->menopause;
            $fp_method = $request->fp_method;
            $fp_action = $request->fp_action;


            // Other triage fields
            $new_attendance = !empty($request->new_attendance) ? 1 : 0;
            $re_attendance = !empty($request->re_attendance) ? 1 : 0;

            $episode_id = $request->episode_id;

            $triage_grade = $request->triage_grade;
            $comment = $request->comment;
            $referal = $request->referral_hospital;
            $clinic_allocation = $request->clinic_allocation;

            // Build symptoms and duration variables
            $symptoms_array = $request->symptoms ?? [];
            $duration_array = $request->duration ?? [];
            $time_array = $request->time ?? [];
            $durations_final = [];

            for ($x = 0; $x < count($symptoms_array); $x++) {
                $durations_final[] = $duration_array[$x] . " " . $time_array[$x];
            }

            // Build observation variables
            $observationsNames_array = !empty($request->observationsNames)? $request->observationsNames:[];
            $obersavationsValues_array = $request->observationsValues;
            $observations = [];

            for ($z = 0; $z < count($observationsNames_array); $z++) {
                $observations[] = $observationsNames_array[$z] . '=' . $obersavationsValues_array[$z];
            }

            $triage->referral = $referal;
            $triage->symptoms = implode(",", $symptoms_array);
            $triage->symptom_duration = implode(",", $durations_final);
            $triage->observations = implode(",", $observations);
            $triage->severe_grade = $triage_grade;
            $triage->comments = $comment;
            $triage->clinic_allocation = $clinic_allocation;
            $triage->patient_id = $patient_id;
            $triage->episode_id = $episode_id;
            $triage->sexually_active = $sexually_active;
            $triage->pregnant = $pregnant;
            $triage->menopause = $menopause;
            $triage->fp_method = $fp_method;
            $triage->fp_action = $fp_action;
            $triage->fp_too_sick = $too_sick;
            $triage->new_attendance = $new_attendance;
            $triage->re_attendance = $re_attendance;
            $triage->any_tb_sysmptoms = $request->any_tb_sysmptoms;
            $triage->cough_for_2_weeks = $request->cough_for_2_weeks;
            $triage->fever_for_2_weeks = $request->fever_for_2_weeks;
            $triage->tb_weight_loss = $request->tb_weight_loss;
            $triage->tb_excessive_night_sweats = $request->tb_excessive_night_sweats;
            $triage->tb_poor_weight_gain = $request->tb_poor_weight_gain;
            $triage->tb_contact_with_tb_person = $request->tb_contact_with_tb_person;
            $triage->blood_group = $request->blood_group ?? NULL;
            $triage->rhesus_factor = $request->rhesus_factor ?? NULL;
            $triage->observation_notes = $request->observation_notes ?? NULL;
            $triage->nursing_notes = $request->nursing_notes ?? NULL;
            $triage->created_by = $logged_in_user_id;

            // begin saving for discharge mortality risk
            $discharge_mortality = DB::table('discharge_mortality_risk')->where('patient_id', $patient_id)
                ->where('episode_id', $episode_id)
                ->first();

            if(!empty($observationsNames_array)) $observation_array = array_combine($observationsNames_array, $obersavationsValues_array);

            if ($discharge_mortality && is_smart_discharge_enabled()) {
                if (isset($request->bcs_eye_movement) && isset($request->bcs_best_mortal) && isset($request->bcs_best_verbal)) {
                    $total = $request->bcs_eye_movement + $request->bcs_best_mortal + $request->bcs_best_verbal;


                    if ($total == 5) {
                        $bcs = 0;
                    } else {
                        $bcs = 1;
                    }
                } else {
                    $bcs = null;
                }

                if (isset($request->maternal_hiv)) {
                    if ($request->maternal_hiv == 1) {
                        $hiv_mom_positive = 0;
                        $hiv_mom_unknown = 0;
                    } else if ($request->maternal_hiv == 2) {
                        $hiv_mom_positive = 1;
                        $hiv_mom_unknown = 0;
                    } else if ($request->maternal_hiv == 3) {
                        $hiv_mom_positive = 0;
                        $hiv_mom_unknown = 1;
                    } else {
                        $hiv_mom_positive = 0;
                        $hiv_mom_unknown = 0;
                    }
                } else {
                    $hiv_mom_positive = null;
                    $hiv_mom_unknown = null;
                }

                DB::table('discharge_mortality_risk')
                    ->where('id', $discharge_mortality->id)
                    ->update([
                        'weight' => $observation_array["Weight"] ?? null,
                        'muac_below_6' => isset($observation_array["MUAC"]) ? ($observation_array["MUAC"] * 10) : null,
                        'bmi_below_6' => $observation_array["BMI"] ?? null,
                        'hospital_travel_duration_below_6' => $request->hospital_travel_duration ?? null,
                        'illness_duration_at_admission_below_6' => $request->illness_duration ?? null,
                        'tone_normal_6mo' => $request->tone_normal_6mo ?? null,
                        'last_hospitalization' => $request->last_hospitalization ?? null,
                        'water_source' => $request->water_source ?? null,
                        'filter_water' => $request->safe_water ?? null,
                        'child_mosquito_net' => $request->child_mosquito_net ?? null,
                        'mother_education_level' => $request->mother_education_level ?? null,
                        'hospital_travel_duration' => $request->hospital_travel_duration ?? null,
                        'muac' => isset($observation_array["MUAC"]) ? ($observation_array["MUAC"] * 10) : null,
                        'temperature' => $observation_array["Temperature"] ?? null,
                        'oxy_saturation' => $observation_array["SaO2"] ?? null,
                        'bcs' => $bcs,
                        'bcs_eye_movement' => $request->bcs_eye_movement ?? null,
                        'bcs_best_mortal' => $request->bcs_best_mortal ?? null,
                        'bcs_best_verbal' => $request->bcs_best_verbal ?? null,
                        'maternal_hiv' => $request->maternal_hiv ?? null,
                        'hiv_mom_positive' => $hiv_mom_positive,
                        'hiv_mom_unknown' => $hiv_mom_unknown,
                        'maternal_age' => $request->maternal_age ?? null,
                        'child_hiv' => $request->child_hiv ?? null,
                        'child_with_proven_infection' => $request->child_with_proven_infection ?? null,
                    ]);
            }
            // end discharge mortality risk save

            try {
                if ($triage->save()) {

                    // Get the previous inserted id of the triage
                    $new_triage_id = $triage->id;

                    // Inserting National Early Warning Score
                    if (isset($request->adult)) {
                        $triage_news = new TriageNews;
                        $triage_news->triage_id = $new_triage_id;
                        $triage_news->episode_id = $episode_id;
                        $triage_news->patient_id = $patient_id;
                        $triage_news->temperature = isset($request->tempNews) ? $request->tempNews : null;
                        $triage_news->heart_rate = isset($request->pulseNews) ? $request->pulseNews : null;
                        $triage_news->respiration_rate = isset($request->respNews) ? $request->respNews : null;
                        $triage_news->oxygen_saturations = isset($request->saNews) ? $request->saNews : null;
                        $triage_news->systolic_bp = isset($request->sysNews) ? $request->sysNews : null;
                        $triage_news->conscious_level = isset($request->conNews) ? $request->conNews : null;
                        $triage_news->supplementary_oxygen = isset($request->suOxNews) ? $request->suOxNews : null;
                        $triage_news->created_by = $logged_in_user_id;
                        $triage_news->save();
                    }

                    // Inserting the emergency signs
                    if ($emergency_signs) :
                        $emergency_sign = new EmergencySign;

                        $emergency_sign->airway = $airway;
                        $emergency_sign->circulation = $circulation;
                        $emergency_sign->neurological = $neurological;
                        $emergency_sign->dehydration = $dehydration;
                        $emergency_sign->patient_id = $patient_id;
                        $emergency_sign->triage_id = $new_triage_id;
                        $emergency_sign->episode_id = $episode_id;
                        $emergency_sign->created_by = $logged_in_user_id;
                        $emergency_sign->save();
                    endif;

                    // Inserting the priority signs
                    if ($priority_signs != "") :
                        $priority_sign = new PrioritySign;
                        $priority_sign->signs = $priority_array;
                        $priority_sign->triage_id = $new_triage_id;
                        $priority_sign->patient_id = $patient_id;
                        $priority_sign->episode_id = $episode_id;
                        $priority_sign->created_by = $logged_in_user_id;
                        $priority_sign->save();
                    endif;

                    // Updating the patient episode table with the triage details
                    $episode_update = PatientEpisode::find($episode_id);
                    $episode_update->triage_id = $new_triage_id;
                    $episode_update->clinic_id = $clinic_allocation;
                    $episode_update->updated_by = $logged_in_user_id;
                    $episode_update->save();

                    flash("Triage has been saved")->success();

                    $clinic_slug = get_name($clinic_allocation, "id", "slug", "clinics");

                    if ($clinic_slug == "art") {
                        return redirect()->route('triage.show', $new_triage_id)->with('alert-info', 'Recommended to be transmitted to the ART clinic.');
                        //- return redirect("hiv_menu");
                    }
                }


                return redirect("/patient_episodes");
            } catch (QueryException $e) {
                $errorCode = $e->errorInfo[1];
                if ($errorCode == 1062) { //error code for duplicate entry to a unique field
                    flash("Triage already exists!")->error();
                    return back()->withInput();
                }
            }
        }
    }

    public function show($id)
    {
        $airway = [];
        $circulation = [];
        $neurological = [];
        $dehydration = [];
        $priority_signs = [];
        $triage = Triage::where('id', $id)->first();
        $patient_episode = PatientEpisode::where('triage_id', $id)->first();
        $patient_id = DB::table('triage')->where('id', $id)->value('patient_id');
        $episode_id = DB::table('patient_episodes')->where('triage_id', $id)->value('id');
        $patient = Patient::find($patient_id);
        if (is_null($patient)) {
            flash("This patient was deleted from the system")->error();
            return redirect()->back();
        }
        $today = date("Y-m-d");
        $difference = days_months_years($patient->date_of_birth, $today);
        $years = $difference[2];
        $clinics = DB::table('clinics')->pluck("name", "id");
        $referral_hospitals = DB::table('referral_hospitals')->pluck('name', 'id');
        $symptoms = DB::table('symptoms')->where('available', 1)->pluck('name', 'id');
        $categories = DB::table('patient_categories')->where('available', 1)->pluck("name", "id");
        $family_planning_methods = DB::table('family_planning_methods')->pluck("name", "id");

        if (between($years, 0, 12)) {
            $emergency_signs = EmergencySign::where('triage_id', $id)->first();

            if ($emergency_signs) {
                $airway = unserialize($emergency_signs->airway);
                $circulation = unserialize($emergency_signs->circulation);
                $neurological = unserialize($emergency_signs->neurological);
                $dehydration = unserialize($emergency_signs->dehydration);
            }
        }

        if (between($years, 0, 12)) {
            $priority_signs_records = PrioritySign::where('triage_id', $id)->first();

            if ($priority_signs_records) {
                $priority_signs = unserialize($priority_signs_records->signs);
            }
        }

        // fetch any discharge mortality info
        $discharge_mortality = DB::table('discharge_mortality_risk')->where('patient_id', $patient_id)
            ->where('episode_id', $episode_id)
            ->first();

        $nutrition = DB::table('triage_nutrition')->where('patient_id', $patient_id)
            ->where('episode_id', $episode_id)
            ->first();

        if (session()->get('triage_without_etat') == 1) {
            $triage_without_etat = true;
        } else {
            $triage_without_etat = false;
        }

        $age_diff_months = Carbon::parse($patient->date_of_birth)->diffInMonths(Carbon::now());
        $triage_hiv = HivGenderBaseViolence::where('triage_id', $triage->id)->first();
        $triage_gbv = GenderBasedViolence::where('triage_id', $triage->id)->first();

        return view('patients::triage.show', compact('triage', 'patient_episode', 'patient', 'clinics', 'referral_hospitals', 'symptoms', 'categories', 'family_planning_methods', 'triage_hiv',
            'episode_id', 'years', 'airway', 'circulation', 'neurological', 'dehydration', 'discharge_mortality', 'age_diff_months', 'priority_signs', 'nutrition', 'triage_without_etat', 'triage_gbv'));
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Foundation\Application|\Illuminate\View\View
     */
    public function edit($id)
    {
        $patient_id = session()->get('patient_id');
        $episode_id = session()->get('episode_id');
        $patient = Patient::where('id', $patient_id)->first();

        $clinics = DB::table('clinics')->where('available', 1)->whereNull('deleted_at')->orderBy('name')->pluck("name", "id")->toArray();
        $referral_hospitals = DB::table('referral_hospitals')->whereNull('deleted_at')->orderBy('name')->pluck("name", "id")->toArray();
        $symptoms = DB::table('symptoms')->whereNull('deleted_at')->orderBy('name')->pluck("name", "id")->toArray();
        $family_planning_methods = DB::table('family_planning_methods')->orderBy('name')->pluck("name", "id")->toArray();

        $clinics = ['' => '- select -'] + $clinics;
        $referral_hospitals = ['' => '- select -'] + $referral_hospitals;
        $symptoms = ['' => '- select -'] + $symptoms;
        $family_planning_methods = ['' => '- select -'] + $family_planning_methods;

        $symptoms_periods = ['' => '- select -', 'Hours' => 'Hours', 'Days' => 'Days', 'Weeks' => 'Weeks', 'Months' => 'Months', 'Years' => 'Years'];

        //determine the age group
        $today = date("Y-m-d");
        $dob = Carbon::parse($patient->date_of_birth);
        $age_diff_days = $dob->diffInDays(Carbon::now());

        $difference = days_months_years($dob, $today);

        $days = $difference[0];
        $months = $difference[1];
        $years = $difference[2];

        $age_group_display = '';
        $age_group = 0;
        $age_group_id = 0;

        $age_group_records = DB::table('age_groups')->whereNull('deleted_at')->get()->toArray();

        foreach ($age_group_records as $age_group_record) {
            // turn into days
            if ($age_group_record->age_type == 3) {
                // days
                $first_day = $age_group_record->from_age;
                $last_day = $age_group_record->to_age;
            } elseif ($age_group_record->age_type == 2) {
                // months
                $first_day = $age_group_record->from_age * 30;
                $last_day = $age_group_record->to_age * 30;
            } else {
                // years
                $first_day = $age_group_record->from_age * 365;
                $last_day = $age_group_record->to_age * 365;
            }

            if (between($age_diff_days, $first_day, $last_day)) {
                $age_group_display = $age_group_record->name;
                $age_group_id = $age_group_record->id;
                break;
            }
        }

        if (between($days, 0, 28) && between($months, 0, 0) && between($years, 0, 0)) {
            $age_group = 1;
            $default_age_group_display = "0 - 28 Days";
        } elseif (between($days, 0, 31) && between($months, 1, 12) && between($years, 0, 0)) {
            $age_group = 2;
            $default_age_group_display = "1 - 12 Months";
        } elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 1, 5)) {
            $age_group = 3;
            $default_age_group_display = "1 - 5 Years";
        } elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 6, 12)) {
            $age_group = 4;
            $default_age_group_display = "6 - 12 Years";
        } elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 13, 200)) {
            $age_group = 5;
            $default_age_group_display = "> 12 Years";
        }

        // if none of the age groups has a fit lets use the default
        if ($age_group_display == '') {
            $age_group_display = $default_age_group_display;
        }

        $observations = DB::table('observations')->whereNull('deleted_at')->whereRaw('FIND_IN_SET(' . $age_group_id . ',age_group)')->get();

        $triage = Triage::find($id);

        $emergency_signs = EmergencySign::where('triage_id', $id)->first();

        if (!empty($emergency_signs)) {
            $airway = unserialize($emergency_signs->airway);
            $circulation = unserialize($emergency_signs->circulation);
            $neurological = unserialize($emergency_signs->neurological);
            $dehydration = unserialize($emergency_signs->dehydration);
        } else {
            $airway = [];
            $circulation = [];
            $neurological = [];
            $dehydration = [];
        }

        $observations_to_edit_temp = explode(",", $triage->observations);
        $observations_to_edit = [];

        foreach ($observations_to_edit_temp as $value) {
            $temp_array = explode("=", $value);

            $observations_to_edit[$temp_array[0]] = $temp_array[1]?? null;
        }

        $priority_signs = PrioritySign::where('triage_id', $id)->first();
        $priority_signs = $priority_signs ? unserialize($priority_signs->signs) : [];

        $dob = Carbon::parse($patient->date_of_birth);

        $age_diff_months = $dob->diffInMonths(Carbon::now());
        $triage_hiv = HivGenderBaseViolence::where('triage_id', $triage->id)->first();
        $triage_gbv = GenderBasedViolence::where('triage_id', $triage->id)->first();

        return view('patients::triage.edit', compact(
            'episode_id',
            'age_group_display',
            'age_group',
            'symptoms',
            'years',
            'patient',
            'family_planning_methods',
            'referral_hospitals',
            'clinics',
            'patient_id',
            'episode_id',
            'observations',
            'triage',
            'airway',
            'circulation',
            'neurological',
            'dehydration',
            'observations_to_edit',
            'priority_signs',
            'symptoms_periods',
            'age_diff_months',
            'triage_hiv',
            'triage_gbv'
        ));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\RedirectResponse
     */
    public function update(Request $request, $id)
    {
        $validator = Validator::make($request->all(), [
            'triage_grade' => 'required',
            'referral_hospital' => 'required',
            'clinic_allocation' => 'required',
            'observationsValues' => 'required'
        ]);

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

            $emergency_signs = false;

            // Receiving the emergency signs from here
            if (isset($request->cyanosis)) :
                $emergency_signs = true;

                // Airway
                $cyanosis = $request->cyanosis;
                $stridor = $request->stridor;
                $severe_distress = $request->severe_distress;

                // Circulation
                $refill = $request->refill;
                $severe_bleeding = $request->severe_bleeding;
                $weak_fast_pulse = $request->weak_fast_pulse;

                // neurological
                $coma = $request->coma;
                $convulsing_now = $request->convulsing_now;

                // Dehydration
                $lethargy = $request->lethargy;

                $airway_array = array(
                    'Cyanosis' => $cyanosis,
                    'Stridor / obstructed breathing/ choking' => $stridor,
                    'Severe respiratory distress' => $severe_distress
                );

                $circulation_array = array(
                    'Capillary refill > 3 seconds' => $refill,
                    'Severe bleeding' => $severe_bleeding,
                    'Weak fast pulse' => $weak_fast_pulse
                );

                $neurological_array = array(
                    'Coma' => $coma,
                    'Convulsing Now' => $convulsing_now
                );

                $dehydration_array = array(
                    'Diarrhoea with Lethargy, sunken eyes or very slow skin pinch' => $lethargy
                );

                $airway = serialize($airway_array);
                $circulation = serialize($circulation_array);
                $neurological = serialize($neurological_array);
                $dehydration = serialize($dehydration_array);
            endif;

            // Receiving the priority signs
            $priority_signs = array();

            isset($request->trauma) ? $priority_signs[] = 'Significant trauma' : '';
            isset($request->severe_pain) ? $priority_signs[] = 'severe_pain' : '';
            isset($request->oedema) ? $priority_signs[] = 'Oedema of both feet' : '';
            isset($request->surgical_condition) ? $priority_signs[] = 'Urgent surgical condition' : '';
            isset($request->continuously_irritable) ? $priority_signs[] = 'Restless continuously irritable, lethargic' : '';
            isset($request->severe_wasting) ? $priority_signs[] = 'Malnutrution: visible severe wasting' : '';
            isset($request->severe_pallor) ? $priority_signs[] = 'Severe pallor' : '';
            isset($request->burns) ? $priority_signs[] = 'Burns (Major)' : '';
            $priority_array = serialize($priority_signs);


            // Receiving family planning
            $too_sick = $request->too_sick;
            $sexually_active = $request->sexually_active;
            $pregnant = $request->pregnant;
            $menopause = $request->menopause;
            $fp_method = $request->fp_method;
            $fp_action = $request->fp_action;


            // Other triage fields
            $new_attendance = !empty($request->new_attendance) ? 1 : 0;
            $re_attendance = !empty($request->re_attendance) ? 1 : 0;

            $episode_id = $request->episode_id;

            $triage_grade = $request->triage_grade;
            $comment = $request->comment;
            $referal = $request->referral_hospital;
            $clinic_allocation = $request->clinic_allocation;


            // Build symptoms and duration variables
            $symptoms_array = $request->symptoms ?? [];
            $duration_array = $request->duration ?? [];
            $time_array = $request->time ?? [];
            $durations_final = [];

            for ($x = 0; $x < count($symptoms_array); $x++) {
                $durations_final[] = $duration_array[$x] . " " . $time_array[$x];
            }

            // Build observation variables
            $observationsNames_array = $request->observationsNames;
            $obersavationsValues_array = $request->observationsValues;
            $observations = [];

            for ($z = 0; $z < count($observationsNames_array); $z++) {
                $observations[] = $observationsNames_array[$z] . '=' . $obersavationsValues_array[$z];
            }

            $triage->referral = $referal;
            $triage->symptoms = implode(",", $symptoms_array);
            $triage->symptom_duration = implode(",", $durations_final);
            $triage->observations = implode(",", $observations);
            $triage->severe_grade = $triage_grade;
            $triage->comments = $comment;
            $triage->clinic_allocation = $clinic_allocation;
            $triage->sexually_active = $sexually_active;
            $triage->pregnant = $pregnant;
            $triage->menopause = $menopause;
            $triage->fp_method = $fp_method;
            $triage->fp_action = $fp_action;
            $triage->fp_too_sick = $too_sick;
            $triage->new_attendance = $new_attendance;
            $triage->re_attendance = $re_attendance;
            $triage->updated_by = $logged_in_user_id;

            if ($triage->save()) {

                // Inserting National Early Warning Score
                if (isset($request->adult)) {
                    $triage_news = TriageNews::where('triage_id', $id)->first();
                    $triage_news->temperature = isset($request->tempNews) ? $request->tempNews : null;
                    $triage_news->heart_rate = isset($request->pulseNews) ? $request->pulseNews : null;
                    $triage_news->respiration_rate = isset($request->respNews) ? $request->respNews : null;
                    $triage_news->oxygen_saturations = isset($request->saNews) ? $request->saNews : null;
                    $triage_news->systolic_bp = isset($request->sysNews) ? $request->sysNews : null;
                    $triage_news->conscious_level = isset($request->conNews) ? $request->conNews : null;
                    $triage_news->supplementary_oxygen = isset($request->suOxNews) ? $request->suOxNews : null;
                    $triage_news->updated_by = $logged_in_user_id;
                    $triage_news->save();
                }

                // Inserting the emergency signs
                if ($emergency_signs) :
                    $emergency_sign = EmergencySign::where('triage_id', $id)->first();

                    if(!empty($emergency_sign)){
                        $emergency_sign->airway = $airway;
                        $emergency_sign->circulation = $circulation;
                        $emergency_sign->neurological = $neurological;
                        $emergency_sign->dehydration = $dehydration;
                        $emergency_sign->updated_by = $logged_in_user_id;
                        $emergency_sign->save();
                    }else {
                        $emergency_sign = new EmergencySign;
                        $emergency_sign->patient_id = $triage->patient_id;
                        $emergency_sign->triage_id = $id;
                        $emergency_sign->episode_id = $triage->episode_id; 
                        $emergency_sign->airway = $airway;
                        $emergency_sign->circulation = $circulation;
                        $emergency_sign->neurological = $neurological;
                        $emergency_sign->dehydration = $dehydration;
                        $emergency_sign->created_by = $logged_in_user_id;
                        $emergency_sign->save();
                    }
                endif;

                // Inserting the priority signs
                if ($priority_signs != "") :
                    $priority_sign = PrioritySign::where('triage_id', $id)->first();
                    $priority_sign->signs = $priority_array;
                    $priority_sign->updated_by = $logged_in_user_id;
                    $priority_sign->save();
                endif;

                // Updating the patient episode table with the triage details
                $episode_update = PatientEpisode::find($episode_id);
                $episode_update->clinic_id = $clinic_allocation;
                $episode_update->updated_by = $logged_in_user_id;
                $episode_update->save();

                flash("Triage has been updated")->success();

                $clinic_slug = get_name($clinic_allocation, "id", "slug", "clinics");
                if ($clinic_slug == "art") {
                    return redirect()->route('triage.show', $triage->id)->with('alert-info', 'Recommended to be transmitted to the ART clinic.');
                    //- return redirect("hiv_menu");
                }
            }

            return redirect("/patient_episodes");
        }
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }

    public function add_symptom(Request $request)
    {

        $logged_in_user_id = Auth()->user()->id;
        $symptom = new Symptom;
        $symptom->name = $request->symptom_name;
        $symptom->created_by = $logged_in_user_id;
        if ($symptom->save()) {
            //insert successful
            return 1;
        } else {
            return 0;
        }
    }

    public function add_referral(Request $request)
    {

        $logged_in_user_id = Auth()->user()->id;
        $referral_hospital = new ReferralHospital;
        $referral_hospital->name = $request->name;
        $referral_hospital->created_by = $logged_in_user_id;
        $referral_hospital->updated_by = $logged_in_user_id;

        if ($referral_hospital->save()) {
            //insert successful
            return $referral_hospital->id;
        } else {
            return 0;
        }
    }

    public function get_prompt(Request $request)
    {

        $result = DB::table('symptoms')->where('id', $request->symptom_id)->first();

        if ($result->prompts) {
            $prompt = $result->prompts;
        } else {
            $prompt = "No prompt available";
        }

        if ($result->reference_link && !empty($result->reference_link) && $result->reference_link != "-") {
            //some links just have "-"
            $ref_text = '<a style="color: blue;" href="' . $result->reference_link . '" target="_blank">' . $result->reference_text . '</a>';
        } else {
            $ref_text = "No reference link available";
        }

        return $prompt . "&&&&" . $ref_text;
    }

    public function save_smart_triage_score(Request $request) {
        $smart_triage = SmartTriage::where('episode_id', $request->episode_id)->first();

        if ($smart_triage) {
            $smart_triage->age = $request->age;
            $smart_triage->pulse_rate = $request->pulse_rate;
            $smart_triage->temperature = $request->temperature;
            $smart_triage->muac = $request->muac;
            $smart_triage->transformed_oxygen_saturation = $request->transformed_oxygen_saturation;
            $smart_triage->oxygen_saturation = $request->oxygen_saturation;
            $smart_triage->parent_concern = $request->parent_concern;
            $smart_triage->respiratory_distress = $request->respiratory_distress;
            $smart_triage->oedema = $request->oedema;
            $smart_triage->pallor = $request->pallor;
            $smart_triage->respirations_rate = $request->respirations_rate;
            $smart_triage->burns = $request->burns;
            $smart_triage->severe_pain = $request->severe_pain;
            $smart_triage->trauma = $request->trauma;
            $smart_triage->continously_irritable = $request->continously_irritable;
            $smart_triage->lethargy = $request->lethargy;
            $smart_triage->convulsing = $request->convulsing;
            $smart_triage->coma = $request->coma;
            $smart_triage->weak_fast_pulse = $request->weak_fast_pulse;
            $smart_triage->refill = $request->refill;
            $smart_triage->stridor = $request->stridor;
            $smart_triage->cyanosis = $request->cyanosis;
            $smart_triage->linear_predictor = $request->linear_predictor;
            $smart_triage->risk_score = $request->risk_score;
            $smart_triage->auto_triage_grade = $request->triage_grade;
            $smart_triage->selected_triage_grade = $request->selected_triage_grade;

            $smart_triage->save();
        } else {
            $smart_triage = new SmartTriage();
            $smart_triage->patient_id = $request->patient_id;
            $smart_triage->episode_id = $request->episode_id;
            $smart_triage->age = $request->age;
            $smart_triage->pulse_rate = $request->pulse_rate;
            $smart_triage->temperature = $request->temperature;
            $smart_triage->muac = $request->muac;
            $smart_triage->transformed_oxygen_saturation = $request->transformed_oxygen_saturation;
            $smart_triage->oxygen_saturation = $request->oxygen_saturation;
            $smart_triage->parent_concern = $request->parent_concern;
            $smart_triage->respiratory_distress = $request->respiratory_distress;
            $smart_triage->oedema = $request->oedema;
            $smart_triage->pallor = $request->pallor;
            $smart_triage->respirations_rate = $request->respirations_rate;
            $smart_triage->burns = $request->burns;
            $smart_triage->severe_pain = $request->severe_pain;
            $smart_triage->trauma = $request->trauma;
            $smart_triage->continously_irritable = $request->continously_irritable;
            $smart_triage->lethargy = $request->lethargy;
            $smart_triage->convulsing = $request->convulsing;
            $smart_triage->coma = $request->coma;
            $smart_triage->weak_fast_pulse = $request->weak_fast_pulse;
            $smart_triage->refill = $request->refill;
            $smart_triage->stridor = $request->stridor;
            $smart_triage->cyanosis = $request->cyanosis;
            $smart_triage->linear_predictor = $request->linear_predictor;
            $smart_triage->risk_score = $request->risk_score;
            $smart_triage->auto_triage_grade = $request->triage_grade;
            $smart_triage->selected_triage_grade = $request->selected_triage_grade;

            $smart_triage->save();
        }

        return 1;
    }

    public function smart_triage_report(Request $request)
    {
        if (isset($request->start_date) && isset($request->end_date)) {
            $start_date = Carbon::parse($request->start_date)->startOfDay()->toDateTimeString();
            $end_date = Carbon::parse($request->end_date)->endOfDay()->toDateTimeString();
        } else {
            $start_date = Carbon::today()->startOfDay()->toDateTimeString();
            $end_date = Carbon::today()->endOfDay()->toDateTimeString();
        }

        $records = DB::table('smart_triage')
            ->whereBetween('smart_triage.created_at', [$start_date, $end_date])
            ->leftJoin('patients', 'smart_triage.patient_id', '=', 'patients.id')
            ->select('smart_triage.*', 'patients.number as patients_number', 'patients.first_name', 'patients.last_name', 'patients.date_of_birth')
            ->limit(300)->get();

        return view('patients::triage.smart_triage_report', compact('records', 'start_date', 'end_date'));
    }

    public function edit_for_post_discharge($episode_id)
    {
        $triage = DB::table('triage')->where('episode_id', $episode_id)->first();

        $temperature = "";
        $oxy_sat = "";
        $muac = "";
        $height = "";
        $weight = "";
        $bmi = "";

        if ($triage) {
            $old_observations = explode(",", $triage->observations);

            foreach ($old_observations as $value) {
                $split_values = explode("=", $value);

                switch ($split_values[0]) {
                    case "Temperature":
                        $temperature = $split_values[1];
                        break;
                    case "SaO2":
                        $oxy_sat = $split_values[1];
                        break;
                    case "MUAC":
                        $muac = $split_values[1];
                        break;
                    case "Height":
                        $height = $split_values[1];
                        break;
                    case "Weight":
                        $weight = $split_values[1];
                        break;
                    case "BMI":
                        $bmi = $split_values[1];
                        break;
                }
            }
        }

        $patient_episode = PatientEpisode::where('id', $episode_id)->first();
        $patient_id = $patient_episode->patient_id;

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

        $dob = Carbon::parse($patient->date_of_birth);
        $age_diff_months = $dob->diffInMonths(Carbon::now());

        $today = date("Y-m-d");

        $difference = days_months_years($dob, $today);
        $days = $difference[0];
        $months = $difference[1];
        $years = $difference[2];

        // create default age group
        $age_group_display = '';
        $age_group = 0;

        if (between($days, 0, 28) && between($months, 0, 0) && between($years, 0, 0)) :
            $age_group_display = "0 - 28 Days";
            $age_group = 1;
        elseif (between($days, 0, 31) && between($months, 1, 12) && between($years, 0, 0)) :
            $age_group_display = "1 - 12 Months";
            $age_group = 2;
        elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 1, 5)) :
            $age_group_display = "1 - 5 Years";
            $age_group = 3;
        elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 6, 12)) :
            $age_group_display = "6 - 12 Years";
            $age_group = 4;
        elseif (between($days, 0, 31) && between($months, 0, 12) && between($years, 13, 200)) :
            $age_group_display = "> 12 Years";
            $age_group = 5;
        endif;

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

        // fetch any discharge mortality info
        $discharge_mortality = DB::table('discharge_mortality_risk')->where('patient_id', $patient_id)
            ->where('episode_id', $episode_id)
            ->first();

        return view('patients::triage.edit_for_post_discharge', compact(
            'triage',
            'patient_episode',
            'patient',
            'categories',
            'muac',
            'oxy_sat',
            'episode_id',
            'years',
            'age_diff_months',
            'discharge_mortality',
            'age_group',
            'age_group_display',
            'patient_id',
            'temperature',
            'weight',
            'height',
            'bmi'
        ));
    }

    public function save_edits_for_post_discharge(Request $request)
    {
        $episode_id = $request->episode_id;
        $patient_id = $request->patient_id;

        // begin saving for discharge mortality risk
        $discharge_mortality = DB::table('discharge_mortality_risk')->where('patient_id', $patient_id)
            ->where('episode_id', $episode_id)
            ->first();

        if ($discharge_mortality) {
            if (isset($request->bcs_eye_movement) && isset($request->bcs_best_mortal) && isset($request->bcs_best_verbal)) {
                $total = $request->bcs_eye_movement + $request->bcs_best_mortal + $request->bcs_best_verbal;


                if ($total == 5) {
                    $bcs = 0;
                } else {
                    $bcs = 1;
                }
            } else {
                $bcs = null;
            }

            if (isset($request->maternal_hiv)) {
                if ($request->maternal_hiv == 0) {
                    $hiv_mom_positive = 0;
                    $hiv_mom_unknown = 1;
                } else if ($request->maternal_hiv == 1) {
                    $hiv_mom_positive = 0;
                    $hiv_mom_unknown = 0;
                } else {
                    $hiv_mom_positive = 1;
                    $hiv_mom_unknown = 0;
                }
            } else {
                $hiv_mom_positive = null;
                $hiv_mom_unknown = null;
            }

            DB::table('discharge_mortality_risk')
                ->where('id', $discharge_mortality->id)
                ->update([
                    'weight' => $request->weight ?? null,
                    'muac_below_6' => isset($request->muac) ? ($request->muac * 10) : null,
                    'bmi_below_6' => $request->bmi ?? null,
                    'hospital_travel_duration_below_6' => $request->hospital_travel_duration ?? null,
                    'illness_duration_at_admission_below_6' => $request->illness_duration ?? null,
                    'last_hospitalization' => $request->last_hospitalization ?? null,
                    'water_source' => $request->water_source ?? null,
                    'filter_water' => $request->safe_water ?? null,
                    'child_mosquito_net' => $request->child_mosquito_net ?? null,
                    'mother_education_level' => $request->mother_education_level ?? null,
                    'hospital_travel_duration' => $request->hospital_travel_duration ?? null,
                    'muac' => isset($request->muac) ? ($request->muac * 10) : null,
                    'temperature' => $request->temperature ?? null,
                    'oxy_saturation' => $request->oxy_sat ?? null,
                    'bcs' => $bcs,
                    'bcs_eye_movement' => $request->bcs_eye_movement ?? null,
                    'bcs_best_mortal' => $request->bcs_best_mortal ?? null,
                    'bcs_best_verbal' => $request->bcs_best_verbal ?? null,
                    'maternal_hiv' => $request->maternal_hiv ?? null,
                    'hiv_mom_positive' => $hiv_mom_positive,
                    'hiv_mom_unknown' => $hiv_mom_unknown,
                    'maternal_age' => $request->maternal_age ?? null,
                    'child_hiv' => $request->child_hiv ?? null,
                    'child_with_proven_infection' => $request->child_with_proven_infection ?? null
                ]);
        }
        // end discharge mortality risk save

        flash("The post discharge risk score has been calculated")->success();
        return redirect('patient_episodes');
    }
}