<?php

namespace App\Models;

use App\Notifications\Customer\DestroyCustomer;
use App\Notifications\Customer\DestroyedCustomer;
use App\Notifications\Customer\ResetPassword;
use App\Notifications\Customer\VerifyEmail;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Contracts\Database\Query\Builder;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Prunable;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rule;
use Illuminate\Validation\ValidationException;
use LDC\LDCCRM\Enums\ApiError;
use LDC\LDCCRM\Exceptions\ApiErrorException;
use LDC\LDCCRM\Exceptions\CrmException;
use LDC\LDCCRM\Models\Customer as CrmCustomer;

/**
 * @property string                      $email             Email.
 * @property string                      $hashcode          Hashcode.
 * @property string                      $remember_token    Remember token.
 * @property \LDC\LDCCRM\Models\Customer api_data
 * @property \Carbon\Carbon|null         $email_verified_at
 * @property \Carbon\Carbon|null         $last_connection   Date de derniere connexion, (pour les questions oblig CRM).
 * @property-read \Carbon\Carbon         $created_at        Created date.
 * @property-read \Carbon\Carbon         $updated_at        Updated date.
 */
class Customer extends Authenticatable implements MustVerifyEmail
{
    use Notifiable;
    use Prunable;
    use SoftDeletes;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'email',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'last_connection' => 'datetime',
        'email_verified_at' => 'datetime',
    ];

    // * EVENTS

    /**
     * Perform any actions required after the model boots.
     *
     * @return void
     */
    protected static function booted()
    {
        // * EVENT CLOSURES.
        static::creating(function (self $model) {
            static::assertEmailIsUnique($model->id, $model->email);
        });
        static::updating(function (self $model) {
            static::assertEmailIsUnique($model->id, $model->email);
        });
        static::deleting(function () {
            throw new \RuntimeException('This cannot be done à cause de MesBr');
        });
        static::deleted(function (self $model) {
            if ($model->forceDeleting) {
                if ($model->existsInCrm()) {
                    $model->api_data->delete();
                }
                $model->notify(new DestroyedCustomer());
            } else {
                $model->notify(new DestroyCustomer());
            }
        });
        static::restored(function () {
            \session()->flash(
                'warning',
                \trans('Votre compte à été réactivé.')
            );
        });
    }

    // * RELATIONSHIPS

    /**
     * Has Many Participation relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function participations(): HasMany
    {
        return $this->hasMany(Participation::class, 'user_id');
    }

    // * METHODS

    /**
     * Supprimer les comptes inactivés depuis plus d'une semaine
     * de manière permanente.
     *
     * ! Les comptes non activés depuis une semaine ou les comptes supprimés depuis une semaine.
     *
     * @return \Illuminate\Database\Query\Builder
     */
    public function prunable(): Builder
    {
        return static::query()->where(function (Builder $q) {
            $q->where('updated_at', '<=', now()->subWeek())
                ->whereNull('email_verified_at');
        })->orWhere(function (Builder $q) {
            $q->where('deleted_at', '<=', now()->subWeek());
        });
    }

    /**
     * Asserts using validation that the email is unique
     *
     * @param mixed $id
     * @param mixed $email
     * @return void
     * @throws \Illuminate\Validation\ValidationException If user email as already used.
     */
    private static function assertEmailIsUnique(mixed $id, mixed $email): void
    {
        self::assertFieldIsUnique($id, 'email', $email);
    }

    /**
     * Asserts that the field is unique
     *
     * @param mixed  $id
     * @param string $field
     * @param mixed  $value
     * @return void
     * @throws \Illuminate\Validation\ValidationException If the field is not unique.
     */
    private static function assertFieldIsUnique(mixed $id, string $field, mixed $value): void
    {
        Validator::make([$field => $value], [
            $field => Rule::unique('customers', $field)->ignore($id),
        ], [
            $field . '.unique' => trans('La valeur :value pour le champ :attribute est déjà utilisé', [
                'attribute' => $field,
                'value' => $value
            ])
        ])->validate();
    }

    // * --- AUTH ---

    /**
     * Send the email verification notification.
     *
     * @return void
     */
    public function sendEmailVerificationNotification()
    {
        $this->deleteIfDoesNotExistsInCrm();
        $this->notify(new VerifyEmail());
    }

    /**
     * Mark the given user's email as verified.
     *
     * @return boolean
     * @throws \LDC\LDCCRM\Exceptions\CrmException If an error occurs on server side or on getting response.
     * @throws \LDC\LDCCRM\Exceptions\ApiErrorException If any error or \LDC\LDCCRM\Enums\ApiError occurs.
     * @phpcs:ignore Squiz.Commenting.FunctionCommentThrowTag.WrongNumber
     */
    public function markEmailAsVerified()
    {
        $this->deleteIfDoesNotExistsInCrm();
        try {
            return $this->api_data->activate() && parent::markEmailAsVerified();
        } catch (ApiErrorException $e) {
            if ($e->getApiError()->equals(ApiError::customerAlreadyActive())) {
                return true && parent::markEmailAsVerified();
            }
            throw $e;
        }
    }

    /**
     * Send the password reset notification.
     *
     * @param  mixed $token
     * @return void
     */
    public function sendPasswordResetNotification(mixed $token)
    {
        $this->deleteIfDoesNotExistsInCrm();
        /** @var string $token */
        $this->notify(new ResetPassword($token));
    }

    /**
     * Check if the customer exists in CRM.
     *
     * @return boolean
     */
    public function existsInCrm(): bool
    {
        return $this->hashcode and CrmCustomer::find($this->hashcode);
    }

    /**
     * Force delete and logout if is logged in case the customer
     * does not exists in CRM.
     *
     * @return void
     * @throws \Illuminate\Validation\ValidationException If the account is deleted because does not exists in CRM.
     */
    private function deleteIfDoesNotExistsInCrm(): void
    {
        if ($this->existsInCrm()) {
            return;
        }
        /** @var static|null $loggedCustomer */
        $loggedCustomer = \auth('frontend')->user();
        $isLogged       = \optional($loggedCustomer)->id === $this->id and !\is_null($this->id);
        if ($isLogged) {
            \auth('frontend')->logout();
        }
        $this->forceDelete();
        throw ValidationException::withMessages([
            'error' => trans('Le compte \'existe pas.')
        ]);
    }

    // * --- END AUTH ---

    /**
     * Get api_data attribute, the crm Data of a customer
     *
     * @return \Illuminate\Database\Eloquent\Casts\Attribute
     */
    public function apiData(): Attribute
    {
        return Attribute::make(
            get: fn (): CrmCustomer => self::cacheCrm($this->hashcode, "apiData", function () {
                /** @var \LDC\LDCCRM\CrmApiV2 */
                $crm         = app('crmAPI');
                $crmCustomer = $crm->getCustomer($this->hashcode);
                if (!$crmCustomer) {
                    throw new CrmException('CRM get Customer returned null');
                }
                return $crmCustomer;
            })
        );
    }

    /**
     * Set the crm Data of a customer
     *
     * @param array $data
     * @return boolean
     *
     * @throws \LDC\LDCCRM\Exceptions\CrmException If an error occurs on server side or on getting response.
     * @throws \LDC\LDCCRM\Exceptions\ApiErrorException If any error or \LDC\LDCCRM\Enums\ApiError occurs.
     * @phpcs:disable Squiz.Commenting.FunctionCommentThrowTag.WrongNumber
     */
    public function updateApiData(array $data): bool
    {
        // phpcs:enable
        /** @var \LDC\LDCCRM\Models\Customer */
        $crmCustomer = $this->api_data;
        if (!$crmCustomer) {
            throw new CrmException('CRM get Customer returned null');
        }

        $crmCustomer->fill($data);
        $result = $crmCustomer->save();
        self::clearCrmCached($crmCustomer->hashcode, 'apiData');

        return $result;
    }

    // * CRM CACHE

    /**
     * Clear cached apiData
     *
     * @return void
     */
    public function clearApiDataCache(): void
    {
        /** @var \LDC\LDCCRM\Models\Customer */
        $crmCustomer = $this->api_data;
        self::clearCrmCached($crmCustomer->hashcode, 'apiData');
    }

    /**
     * Put customer crm part in cache
     *
     * @template T
     * @param string           $uuid      The customer uuid.
     * @param string           $part_name The part name for the cache path.
     * @param \Closure(void):T $part      The part to cache.
     * @param integer          $ttl       Time to live in seconds for the cache part.
     * @return T
     * @phpcs:disable Squiz.Commenting.FunctionComment.IncorrectTypeHint
     */
    public static function cacheCrm(string $uuid, string $part_name, \Closure $part, int $ttl = 60 * 60)
    {
        // phpcs:enable
        return Cache::remember("customers.{$uuid}.{$part_name}", $ttl, $part);
    }

    /**
     * Clear customer crm cache part or totally
     *
     * @param string $uuid
     * @param string $part_name
     * @return void
     */
    public static function clearCrmCached(string $uuid, string $part_name): void
    {
        $cache = "customers.{$uuid}";
        if ($part_name) {
            $cache .= ".{$part_name}";
        }
        Cache::forget($cache);
    }

    // * --- END CRM CACHE

    /**
     * This mutate Customer attributes to array
     * including only non critical properties and crm values
     * (One that can be send to front office without security breach)
     *
     * @return array
     */
    public function toArray()
    {
        if ($this->hashcode) {
            return collect(array_merge(
                parent::toArray(),
                (array)$this->apiData
            ))->intersectByKeys([
                'email' => '',
                'firstname' => '',
                'lastname' => '',
                'address' => '',
                'address2' => '',
                'postcode' => '',
                'birth_date' => '',
                'city' => '',
                'country' => '',
                'opt_in' => '',
                'phone' => ''
            ])->toArray();
        } else {
            return parent::toArray();
        }
    }
}