<?php

namespace App\Models;

use App\Enums\Order\DeliveryStatus;
use App\Enums\Order\PaymentStatus;
use App\Enums\Order\ValidationStatus;
use App\Notifications\Order\OrderValidationStatusChanged;
use App\Notifications\Order\OrderDeliveryStatusChanged;
use Gloudemans\Shoppingcart\Cart;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Session;
use Illuminate\Validation\ValidationException;
use Kwaadpepper\Enum\Traits\CastsEnums;

/**
 * Order
 *
 * @property-read string                       $reference         The order unique reference string.
 * @property array                             $basket            The order serialized basket.
 * @property string                            $email             The customer email used for this order.
 * @property boolean                           $mail_sent         Has the confirmation mail been sent to the customer.
 * @property object                            $shipping          The shipping address info.
 * @property object                            $billing           The billing address info.
 * @property integer                           $total_discounted  Total discounted on this order in cents.
 * @property integer                           $total_ttc         Total payed fro mthe customer in cents.
 * @property integer                           $total_ht          Total without taxes in cents.
 * @property integer                           $total_weight      Total weight in gramms.
 * @property \App\Enums\Order\ValidationStatus $validation_status The order validation status.
 * @property \App\Enums\Order\PaymentStatus    $payment_status    The order payment status.
 * @property \App\Enums\Order\DeliveryStatus   $delivery_status   The order delivery status.
 *
 * @property-read boolean $can_be_cancelled Can the order be cancelled ?
 *
 * @package App\Models
 */
class Order extends Model
{
    use CastsEnums;
    use HasFactory;

    /**
     * The primary key for the model.
     *
     * @var string
     */
    protected $primaryKey = 'uuid';

    /**
     * Indicates if the IDs are auto-incrementing.
     *
     * @var boolean
     */
    public $incrementing = false;

    /**
     * The "type" of the primary key ID.
     *
     * @var string
     */
    protected $keyType = 'uuid';

    /**
     * The model's attributes.
     *
     * @var array
     */
    protected $attributes = [
        'mail_sent' => false
    ];

    /**
     * Map attribute names to enum classes.
     *
     * @var array
     */
    protected $enumCasts = [
        'validation_status' => ValidationStatus::class,
        'payment_status' => PaymentStatus::class,
        'delivery_status' => DeliveryStatus::class
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'basket' => 'object',
        'shipping' => 'object',
        'billing' => 'object',
        'mail_sent' => 'bool'
    ];

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'shipping',
        'billing'
    ];

    /**
     * Perform any actions required after the model boots.
     *
     * @return void
     */
    protected static function booted()
    {
        static::creating(function (self $model) {
            // * ASSERTIONS
            static::assertValidateStatus($model);
            static::assertCancelStatus($model);
            $model->setUniqueOrderReference();
        });
        static::updating(function (self $model) {
            static::assertValidateStatus($model);
            static::assertCancelStatus($model);
            static::assertDeliveryStatusCanBeChanged($model);

            if ($model->validation_status->value !== $model->getOriginal('validation_status')) {
                // * Notifiy customer
                $model->customer->notify(new OrderValidationStatusChanged($model));
                Session::flash('info', trans('Le client recevra une notification sur l\'état de validation.'));
            }
            if (
                $model->delivery_status->equals(DeliveryStatus::ready()) and
                $model->delivery_status->value !== $model->getOriginal('delivery_status')
            ) {
                // * Notifiy customer
                $model->customer->notify(new OrderDeliveryStatusChanged($model));
                Session::flash('info', trans('Le client recevra une notification sur \'état de livraison.'));
            }
        });
    }

    // * RELATIONSHIPS

    /**
     * BelongsToMany products relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function products()
    {
        return $this->belongsToMany(Product::class, 'order_lines', 'order_id', 'product_id');
    }

    /**
     * BelongsTo customer relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function customer()
    {
        return $this->belongsTo(Customer::class);
    }

    /**
     * BelongsTo DeliveryMode relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function deliveryMode()
    {
        return $this->belongsTo(DeliveryMode::class);
    }

    /**
     * hasOne timeslot relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasOne
     */
    public function timeslot()
    {
        return $this->hasOne(Timeslot::class);
    }

    // * GETTER

    /**
     * Getter can_be_cancelled
     *
     * ! Logique modifiée pour refonte only here (sans paiement)
     *
     * On peut annuler la commande si le client
     * n'as pas payé et que la livraison n'a pas
     * encore été initié, et la commande n'est pas
     * déjà annulée.
     *
     * @return boolean
     */
    public function getCanBeCancelledAttribute(): bool
    {
        // * Si le status de validation n'est pas annulé
        return $this->getOriginal('validation_status') !== ValidationStatus::cancelled()->value and
            // * Si le status de paiement n'est pas payé
            !($this->getOriginal('payment_status') === PaymentStatus::payed()->value) and
            // * Si le statut de livraison n'est pas récupéré
            !($this->getOriginal('delivery_status') === DeliveryStatus::recovered()->value);
    }

    // * SETTER

    /**
     * Getter reference
     *
     * @return void
     * @throws \RuntimeException This is readonly.
     */
    public function setReferenceAttribute(): void
    {
        throw new \RuntimeException('Reference is readonly');
    }

    // * METHODS

    /**
     * Setup reference
     *
     * @return void
     */
    public function setUniqueOrderReference()
    {
        if (!$this->reference) {
            $this->setRawAttributes(\array_merge(
                $this->attributes,
                [
                    'reference' => self::getUniqueOrderReference()
                ]
            ));
        }
    }

    /**
     * Generate an unique order reference
     *
     * @param integer $recursiveIncrement Used for interanl only.
     * @return string
     */
    private static function getUniqueOrderReference(int $recursiveIncrement = 0): string
    {
        $counter   = Order::whereDate('created_at', Carbon::today())->count() + 1 + $recursiveIncrement;
        $reference = Carbon::now()->isoFormat('YYYYMMDD') . str_pad($counter, 4, "0", STR_PAD_LEFT);
        if (self::query()->where('reference', $reference)->exists()) {
            // * Recursive counter to determinate reference unicity.
            return self::getUniqueOrderReference($counter + 1);
        }
        return $reference;
    }

    /**
     * Check if order can be cancelled
     *
     * @param self $model
     * @return void
     * @throws \Illuminate\Validation\ValidationException If the order is canceled while it cannot be.
     */
    public static function assertCancelStatus(self $model)
    {
        if (
            !$model->can_be_cancelled and
            $model->validation_status->equals(ValidationStatus::cancelled())
        ) {
            throw ValidationException::withMessages([
                'messages' => "La commande '{$model->uuid}' ne peut être annulée"
            ]);
        }
    }

    /**
     * Check if order can be validated
     *
     * @param self $model
     * @return void
     * @throws \Illuminate\Validation\ValidationException If the order is canceled while it cannot be.
     */
    public static function assertValidateStatus(self $model)
    {
        if ($model->getOriginal('validation_status') === ValidationStatus::cancelled()->value) {
            throw ValidationException::withMessages([
                'messages' => "La commande '{$model->uuid}' ne peut être validée après avoir été annulée"
            ]);
        }
    }

    /**
     * Check if delivery status can be changed.
     *
     * @param self $model
     * @return void
     * @throws \Illuminate\Validation\ValidationException If the order is canceled while it cannot be.
     */
    public static function assertDeliveryStatusCanBeChanged(self $model)
    {
        $deliveryStatusHasChanged = $model->getOriginal('delivery_status') !== $model->delivery_status->value;
        if ($deliveryStatusHasChanged and !$model->validation_status->equals(ValidationStatus::validated())) {
            throw ValidationException::withMessages([
                'messages' =>
                // phpcs:ignore Generic.Files.LineLength.TooLong
                "L'état de livraison de la commande ne peut être modifié car la commande '{$model->uuid}' n'est pas validée"
            ]);
        }
        if ($model->getOriginal('validation_status') === ValidationStatus::cancelled()->value) {
            throw ValidationException::withMessages([
                'messages' =>
                "L'état de livraison de la commande ne peut être modifié car la commande '{$model->uuid}' est annulée"
            ]);
        }
    }

    /**
     * Get updated current session order
     *
     * @return null|\App\Models\Order
     */
    public static function getCurrentOrder(): ?self
    {
        /** @var \App\Models\Order|null $order */
        if ($order = Session::get('currentOrder')) {
            // * Refresh order if exists in DB.
            $order = Order::where('uuid', $order->uuid)
                ->orWhere('reference', $order->ref)
                ->first() ?? $order;
        }
        return $order;
    }

    /**
     * Inject the basket items into the order.
     *
     * @param \Gloudemans\Shoppingcart\Cart $basket
     * @return void
     * @throws \Illuminate\Validation\ValidationException If a product from the basket is not accessible anymore.
     */
    public function assignBasket(Cart $basket): void
    {
        $this->basket           = $basket->content();
        $this->total_discounted = \intval($basket->discount());
        $this->total_ttc        = \intval($basket->total());
        $this->total_ht         = \intval($this->total_ttc - $basket->tax());
        $this->total_weight     = \intval($basket->weight());
    }
}