<?php

namespace App\Http\Controllers;

use App\Events\InsuranceEvent;
use App\Events\InsuranceSubscriptionAccepted;
use App\InsuranceSubscriptionAffiliation;
use App\InsuranceSubscriptionState;
use App\Models\CountriesCurrency;
use App\Models\Identification;
use App\Models\NhInsurancesHavingRight;
use App\Models\NhInsurancesSubscription;
use App\Models\NhInsurancesSubscriptionsHistory;
use App\Models\NhMonthsPricesGrid;
use App\Models\NhNetworksConfig;
use App\Traits\Helper;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Http\Request;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Event;
use Illuminate\Support\Facades\Log;
use Throwable;

class InsuranceController extends Controller
{
    use Helper;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * @OA\Get(
     *   path="/insurances",
     *   summary="Afficher la liste des assurances ( par pays )",
     *   tags={"Assurances"},
     *   security={{"api_key":{}}},
     *    @OA\Parameter(
     *      parameter="country_id",
     *      name="country_id",
     *      description="ID du pays",
     *      in="query",
     *      required=true,
     *      @OA\Schema(
     *           type="integer",
     *           default=78
     *      )
     *    ),
     *    @OA\Response(
     *      response=200,
     *      description="OK",
     *       @OA\JsonContent(
     *           ref="#/components/schemas/ApiResponse",
     *            example = {
     *                      "status" : 200,
     *                      "response" : {{"id":250,"name":"Cnamgs-pharmacies", "age_limit_of_insured_and_spouse" : 30 ,
     *     "age_limit_of_child_beneficiary": 25 , "max_number_of_beneficiaries":"5", "months_prices":{{"id": 1,"number_of_months":"3","min_amount":"150000 XAF"}}}},
     *                      "error":null
     *                  }
     *       )
     *    )
     * )
     */
    public function getInsurances(Request $request)
    {
        $this->validate($request, [
            'country_id' => 'nullable|integer|exists:countries,id'
        ]);

        $country = CountriesCurrency::findOrFail($request->input('country_id'));

        $insurances = DB::select("SELECT n.id , n.name , nhc.age_limit_of_insured_and_spouse, nhc.age_limit_of_child_beneficiary, nhc.max_number_of_beneficiaries, nhc.id as nhc_id
        FROM networks n JOIN configWallet cw ON cw.id_network =  n.id JOIN nh_networks_configs nhc
        ON nhc.network_id = n.id WHERE n.country_id = :countryId AND cw.type = 'ilink_sante' AND n.status = 1", ['countryId' => $request->input('country_id')]);

        foreach ($insurances as $insurance) {
            $months_prices = DB::select("SELECT id, number_of_months , min_amount FROM nh_months_prices_grid WHERE nh_network_config_id = :nhc_id",
                ['nhc_id' => $insurance->nhc_id]);

            foreach ($months_prices as $mp) {
                $mp->min_amount = $this->toMoneyWithCurrencyCode($mp->min_amount, $country->currency_code ?? 'XAF');
            }
            $insurance->months_prices = $months_prices;
            unset($insurance->nhc_id);
        }

        return $this->successResponse($insurances);
    }

    /**
     * @OA\Post(
     *   path="/insurances/subscriptions/bonus-amount",
     *   summary="Calculer le montant de la prime",
     *   tags={"Assurances"},
     *   security={{"api_key":{}}},
     *   @OA\RequestBody(
     *      description="Corps de la requete",
     *      required=true,
     *     @OA\MediaType(
     *                mediaType="application/json",
     *          @OA\Schema(
     *                  @OA\Property(property="network_id",
     *                        type="integer",
     *                        example = 250,
     *                        description="ID du reseau de l'assureur"
     *                    ),
     *                  @OA\Property(property="month_price_id",
     *                        type="integer",
     *                        example=2,
     *                        description="ID de la grille de prix choisit lors de la souscription"
     *                    ),
     *                 @OA\Property(
     *                     property="beneficiaries",
     *                    description="Listes de quelques infos sur les beneficiaires ou ayants droit",
     *                     example = {{"birthdate":"1998-10-05","affiliation":"CHILD"}}
     *                 ),
     *          ),
     *        example = {"network_id":250,"month_price_id":3,"beneficiaries":{{"birthdate":"1998-10-05","affiliation":"CHILD"}}}
     *      )
     *    ),
     *    @OA\Response(
     *      response=200,
     *      description="OK",
     *       @OA\JsonContent(
     *           ref="#/components/schemas/ApiResponse",
     *            example = {"status":200,"response":{"bonus_amount":75000,"bonus_amount_formatted":"75 000FCFA"},"error":null},
     *       )
     *    )
     * )
     */
    public function calculateBonusAmount(Request $request)
    {
        $this->validate($request, [
            'network_id' => 'required|integer|exists:networks,id',
            'month_price_id' => 'required|integer|exists:nh_months_prices_grid,id',
            'beneficiaries' => 'nullable|array',
            'beneficiaries.*.birthdate' => 'required|date_format:Y-m-d|before:today',
            'beneficiaries.*.affiliation' => 'required|in:CHILD,SPOUSE'
        ]);

        $networkConfig = NhNetworksConfig::where('network_id', $request->input('network_id'))->first();
        if (!isset($networkConfig) || $networkConfig->configWallet->type != 'ilink_sante')
            return $this->errorResponse(trans('errors.nano_health_not_activated'));

        $monthPrice = $networkConfig->monthsPricesGrid()->where('id', $request->input('month_price_id'))->first();
        if (!isset($monthPrice))
            return $this->errorResponse(trans('errors.incorrect_selected_amount'));

        $bonus = $monthPrice->min_amount;
        foreach ($request->input('beneficiaries') as $b) {
            $bonus += $this->calculateBeneficiaryBonusAmount(new NhInsurancesHavingRight($b), $networkConfig->yearsPricesGrid, $monthPrice);
        }

        return $this->successResponse([
            'bonus_amount' => $bonus,
            'bonus_amount_formatted' => $this->toMoneyWithNetwork($bonus, $request->input('network_id'))
        ]);
    }

    // Caculer le montant de la prime d'un ayant droit ou beneficiaire
    private function calculateBeneficiaryBonusAmount(NhInsurancesHavingRight $beneficiary, Collection $yearsPricesGrid,
                                                     NhMonthsPricesGrid      $monthPrice)
    {
        $bonus = 0;
        if ($beneficiary->affiliation == 'CHILD') {
            $age = date_diff(date_create($beneficiary->birthdate), date_create('now'))->y;
            $levels = $yearsPricesGrid->filter(function ($level) use ($age) {
                return $level->min_age <= $age && $level->max_age >= $age;
            });

            foreach ($levels as $level) {
                $bonus += (100 + $level->markup_percentage) * $monthPrice->min_amount / 100;
            }
        } else {
            $bonus = $monthPrice->min_amount;
        }

        return $bonus;
    }


    /**
     * @OA\Post(
     *   path="/insurances/subscriptions",
     *   summary="Souscrire à une assurance",
     *   tags={"Assurances"},
     *   security={{"api_key":{}}},
     * @OA\RequestBody(
     *      description="Corps de la requete",
     *      required=true,
     *     @OA\MediaType(
     *                mediaType="application/json",
     *        @OA\Schema(ref="#/components/schemas/subscribe_incurance"),
     *        example = {"network_id":250,"user_id":20,"password" : "1234", "month_price_id":3,"beneficiaries":{{"lastname":"Djery","firstname":"DI","gender":"M","birthdate":"2001-10-05",
     *     "affiliation":"CHILD","birthdate_proof":"CERTIFIED_COPY","birthdate_proof_doc":"birth.jpg","justice_doc":"just.png","marriage_certificate_doc":"mariage.png",
     *     "id_document_type":"CNI","id_document_front":"cni_front.jpg","id_document_back":"cni_front.jpg"}}}
     *      )
     *    ),
     *    @OA\Response(
     *      response=200,
     *      description="OK",
     *       @OA\JsonContent(
     *           ref="#/components/schemas/ApiResponse",
     *            example = {"status":200,"response":"Transaction réussie","error":null}
     *       )
     *    )
     * )
     */
    public function subscribe(Request $request)
    {
        /**
         * @OA\Schema(
         *                  schema="subscribe_incurance",
         *                  title = "Souscription à une assurance",
         *                  required={"network_id", "user_id" , "password", "month_price_id", "beneficiaries"},
         *    				 @OA\Property(property="network_id",
         *                        type="integer",
         *                        example = 250,
         *                        description="ID du reseau de l'assureur"
         *                    ),
         *    				 @OA\Property(property="user_id",
         *                        type="integer",
         *                        example=300,
         *                        description="ID l'utilisateur identifié"
         *                    ),
         *               @OA\Property(property="password",
         *                        type="integer",
         *                        example=300,
         *                        description="Mot de passe de l'utilisateur identifié"
         *                    ),
         *                  @OA\Property(property="month_price_id",
         *                        type="integer",
         *                        example=2,
         *                        description="ID de la grille de prix choisit lors de la souscription"
         *                    ),
         *                  @OA\Property(property="beneficiaries",
         *                        type="array",
         *                        description="Listes des beneficiaires ou ayants droit",
         *                          @OA\Items(ref="#/components/schemas/beneficiaries")
         *                    )
         *        )
         *
         * @OA\Schema(
         *                  schema="beneficiaries",
         *                  title = "Beneficiaires ou ayants droit",
         *                  required={"lastname","gender", "birthdate", "affiliation" },
         *    				 @OA\Property(property="lastname",
         *                        type="string",
         *                        example = "Djery",
         *                        description="Noms"
         *                    ),
         *    				 @OA\Property(property="firstname",
         *                        type="string",
         *                        example="DI",
         *                        description="Prenoms"
         *                    ),
         *    				 @OA\Property(property="gender",
         *                        type="string",
         *                        enum = {"M" ,"F"},
         *                        example= "M",
         *                        description="Sexe"
         *                    ),
         *                  @OA\Property(property="birthdate",
         *                        type="string",
         *                        example= "2001-10-05",
         *                        description="Date de naissance"
         *                    ),
         *               @OA\Property(property="affiliation",
         *                        type="string",
         *                        enum = {"CHILD" ,"SPOUSE"},
         *                        example= "CHILD",
         *                        description="Affiliation"
         *                    ),
         *              @OA\Property(property="birthdate_proof",
         *                        type="string",
         *                        enum = {"CERTIFIED_COPY" ,"CERTIFICATE"},
         *                        example="CERTIFIED_COPY",
         *                        description="Copie légalisée acte de naissance ou certificat de naissance"
         *                    ),
         *              @OA\Property(property="birthdate_proof_doc",
         *                        type="string",
         *                        example="birthdate_proof_doc.jpg",
         *                        description="Copie légalisée acte de naissance ou certificat de naissance"
         *                    ),
         *              @OA\Property(property="justice_doc",
         *                        type="string",
         *                        example="justice_doc.jpg",
         *                        description="Une page document de justice si enfant adopté ou sous tutelle"
         *                    ),
         *              @OA\Property(property="marriage_certificate_doc",
         *                        type="string",
         *                        example="marriage_certificate_doc.jpg",
         *                        description="Une page de l'acte de mariage"
         *                    ),
         *           @OA\Property(property="id_document_type",
         *                        type="string",
         *                        example="CNI",
         *                        description="Type de piece d'identité cni , carte sejour, permis"
         *                    ),
         *          @OA\Property(property="id_document_front",
         *                        type="string",
         *                        example="id_document_front.jpg",
         *                        description="Pièce identité recto"
         *                    ),
         *          @OA\Property(property="id_document_back",
         *                        type="string",
         *                        example="id_document_back.jpg",
         *                        description="Pièce identité verso"
         *                    ),
         *        )
         */
        $this->validate($request, [
            'network_id' => 'required|integer|exists:networks,id',
            'user_id' => 'required|integer|exists:users,id',
            'password' => 'required|string',
            'month_price_id' => 'required|integer|exists:nh_months_prices_grid,id',
            'beneficiaries' => 'nullable|array',
            'beneficiaries.*.lastname' => 'required|string',
            'beneficiaries.*.gender' => 'required|in:M,F',
            'beneficiaries.*.birthdate' => 'required|date_format:Y-m-d|before:today',
            'beneficiaries.*.affiliation' => 'required|in:CHILD,SPOUSE',
            'beneficiaries.*.birthdate_proof' => 'required_if:beneficiaries.*.affiliation,CHILD|in:CERTIFIED_COPY,CERTIFICATE',
            'beneficiaries.*.birthdate_proof_doc' => 'required_if:beneficiaries.*.affiliation,CHILD|string',
            'beneficiaries.*.justice_doc' => 'nullable|string',
            'beneficiaries.*.marriage_certificate_doc' => 'required_if:beneficiaries.*.affiliation,SPOUSE|string',
            'beneficiaries.*.id_document_type' => 'required_if:beneficiaries.*.affiliation,SPOUSE|string',
            'beneficiaries.*.id_document_front' => 'required_if:beneficiaries.*.affiliation,SPOUSE|string',
            'beneficiaries.*.id_document_back' => 'required_if:beneficiaries.*.affiliation,SPOUSE|string',
        ]);

        $identification = Identification::where('id_user', $request->input('user_id'))->first();
        if (!isset($identification) || $identification->status == 0)
            return $this->errorResponse(trans('errors.user_identification_required'));

        if (!$this->checkPassword($request->password, $identification->user->encrypted_password, $identification->user->salt))
            return $this->errorResponse(trans('messages.incorrect_user_password'));

        $networkConfig = NhNetworksConfig::where('network_id', $request->input('network_id'))->first();
        if (!isset($networkConfig) || $networkConfig->configWallet->type != 'ilink_sante')
            return $this->errorResponse(trans('errors.nano_health_not_activated'));

        // Verification de l'age du beneficiaire
        $insuredAge = date_diff(date_create($identification->birth_date), date_create('now'))->y;
        if ($insuredAge > $networkConfig->age_limit_of_insured_and_spouse) {
            return $this->errorResponse(trans('errors.minimal_age_required'));
        }

        $networkConfig = NhNetworksConfig::where('network_id', $request->input('network_id'))->first();
        if (sizeof($request->input('beneficiaries')) > $networkConfig->max_number_of_beneficiaries)
            return $this->errorResponse(trans('errors.number_of_beneficiaries_exceeded'));

        $monthPrice = $networkConfig->monthsPricesGrid()->where('id', $request->input('month_price_id'))->first();
        if (!isset($monthPrice))
            return $this->errorResponse(trans('errors.incorrect_selected_amount'));

        try {
            DB::beginTransaction();
            $subscription = new NhInsurancesSubscription($request->all());
            $subscription->number_of_beneficiaries = sizeof($request->input('beneficiaries'));
            $subscription->insurance_subscription_id = $this->generateSubscriptionID();
            $subscription->number_of_months = $monthPrice->number_of_months;
            $subscription->bonus_amount = $monthPrice->min_amount;
            $subscription->state = InsuranceSubscriptionState::UNDER_VALIDATION;
            $subscription->save();

            $beneficiariesBonus = 0;
            foreach ($request->input('beneficiaries') as $b) {
                $beneficiary = new NhInsurancesHavingRight($b);
                $beneficiary->insurance_subscription_id = $subscription->insurance_subscription_id;
                $beneficiary->bonus_amount = $this->calculateBeneficiaryBonusAmount($beneficiary, $networkConfig->yearsPricesGrid, $monthPrice);
                $beneficiariesBonus += $beneficiary->bonus_amount;
                if ($beneficiary->affiliation == InsuranceSubscriptionAffiliation::CHILD) {
                    $beneficiary->marriage_certificate_doc = null;
                    $beneficiary->id_document_type = null;
                    $beneficiary->id_document_back = null;
                    $beneficiary->id_document_front = null;
                } else {
                    $beneficiary->justice_doc = null;
                    $beneficiary->birthdate_proof_doc = null;
                    $beneficiary->birthdate_proof = null;
                }
                $beneficiary->save();
            }

            $subscription->total_bonus_amount = ($subscription->bonus_amount + $beneficiariesBonus);
            $subscription->save();

            NhInsurancesSubscriptionsHistory::create([
                'action' => 'ADD',
                'insurance_subscription_id' => $subscription->insurance_subscription_id,
                'insurance_subscription_state' => $subscription->state,
                'insurance_subscription' => json_encode($subscription)
            ]);


            Event::dispatch(new InsuranceEvent($subscription, trans('messages.insurance_subscription'), trans('messages.insurance_subscription_mail', ['name' => $subscription->user->lastname, 'subscription_id' => $subscription->insurance_subscription_id,
                'bonus_amount' => $this->toMoneyWithNetwork($subscription->total_bonus_amount, $subscription->network_id), 'number_of_beneficiaries' => $subscription->number_of_beneficiaries])));

            DB::commit();
            return $this->successResponse(trans('messages.insurance_subscription_successful'));
        } catch (Throwable $e) {
            Log::error($e->getMessage() . '\n' . $e->getTraceAsString());
            DB::rollBack();
            return $this->errorResponse(trans('errors.unexpected_error'), 500);
        }

    }

    /**
     * @OA\Post(
     *   path="/insurances/subscriptions/upload-images",
     *   summary="Uploader les images de l'assurance",
     *   tags={"Assurances"},
     *   security={{"api_key":{}}},
     * @OA\RequestBody(
     *      description="Corps de la requete",
     *      required=true,
     *     @OA\MediaType(
     *                mediaType="multipart/form-data",
     *        @OA\Schema(
     *               @OA\Property(
     *                  property="files[]",
     *                  description = "Liste des documents à uploader",
     *                  type="array",
     *                      @OA\Items(type="string", format="binary")
     *              )
     *          ),
     *      )
     *    ),
     *    @OA\Response(
     *      response=200,
     *      description="OK",
     *       @OA\JsonContent(
     *           ref="#/components/schemas/ApiResponse",
     *            example = {"status":200,"response":"Transaction réussie","error":null}
     *       )
     *    )
     * )
     */
    public function uploadImages(Request $request)
    {
        $this->validate($request, [
            'files' => 'required',
            'files.*' => 'mimes:jpeg,png,jpg,jpeg|max:8192'
        ]);

        $files = [];
        if ($request->hasfile('files')) {
            foreach ($request->file('files') as $file) {
                $filename = $this->uploadImage($file, 'NH', 'insurances-subscriptions-docs');
                array_push($files, $filename);
            }
        }

        return $this->successResponse($files);
    }

    public function validateSubscription($id, Request $request)
    {
        $this->validate($request, [
            'agent_id' => 'required|integer|exists:agents,id'
        ]);

        try {
            DB::beginTransaction();
            $subscription = NhInsurancesSubscription::findOrFail($id);
            $subscription->state = InsuranceSubscriptionState::ACCEPTED;
            $subscription->save();

            NhInsurancesSubscriptionsHistory::create([
                'action' => 'EDIT',
                'insurance_subscription_id' => $subscription->insurance_subscription_id,
                'insurance_subscription_state' => $subscription->state,
                'agent_id' => $request->input('agent_id'),
                'insurance_subscription' => json_encode($subscription)
            ]);

            Event::dispatch(new InsuranceEvent($subscription, trans('messages.insurance_subscription_accepted'), trans('messages.insurance_subscription_accepted_mail', ['name' => $subscription->user->lastname, 'subscription_id' => $subscription->insurance_subscription_id,
                'bonus_amount' => $this->toMoneyWithNetwork($subscription->total_bonus_amount, $subscription->network_id), 'user_code' => $subscription->user->user_code,
                'number_of_beneficiaries' => $subscription->number_of_beneficiaries]), trans('messages.insurance_subscription_accepted_notification', ['subscription_id' => $subscription->insurance_subscription_id])));
            DB::commit();
            return $this->successResponse(trans('messages.successful_transaction'));
        } catch (Throwable $e) {
            Log::error($e->getMessage() . '\n' . $e->getTraceAsString());
            DB::rollBack();
            return $this->errorResponse(trans('errors.unexpected_error'), 500);
        }
    }

    public function rejectSubscription($id, Request $request)
    {
        $this->validate($request, [
            'agent_id' => 'required|integer|exists:agents,id',
            'reason' => 'required'
        ]);

        try {
            DB::beginTransaction();
            $subscription = NhInsurancesSubscription::findOrFail($id);
            $subscription->reason = $request->input('reason');
            $subscription->state = InsuranceSubscriptionState::REJECTED;
            $subscription->save();

            NhInsurancesSubscriptionsHistory::create([
                'action' => 'EDIT',
                'insurance_subscription_id' => $subscription->insurance_subscription_id,
                'insurance_subscription_state' => $subscription->state,
                'agent_id' => $request->input('agent_id'),
                'insurance_subscription' => json_encode($subscription)
            ]);

            Event::dispatch(new InsuranceEvent($subscription, trans('messages.insurance_subscription_rejected'), trans('messages.insurance_subscription_rejected_mail', ['name' => $subscription->user->lastname, 'subscription_id' => $subscription->insurance_subscription_id,
                'bonus_amount' => $this->toMoneyWithNetwork($subscription->total_bonus_amount, $subscription->network_id), 'reason' => $request->input('reason'),
                'number_of_beneficiaries' => $subscription->number_of_beneficiaries]), trans('messages.insurance_subscription_rejected_notification', ['subscription_id' => $subscription->insurance_subscription_id])));
            DB::commit();
            return $this->successResponse(trans('messages.successful_transaction'));
        } catch (Throwable $e) {
            Log::error($e->getMessage() . '\n' . $e->getTraceAsString());
            DB::rollBack();
            return $this->errorResponse(trans('errors.unexpected_error'), 500);
        }
    }

    private function generateSubscriptionID(): string
    {
        do {
            $code = $this->generateTransactionCode();
            $codeCorrect = NhInsurancesSubscription::where('insurance_subscription_id', $code)->count() < 0;
        } while ($codeCorrect);
        return $code;
    }
}