<?php

namespace App\Models\Shop;

use App\Enums\Order\DeliveryModeEnum;
use App\Enums\Order\DeliveryStatus;
use App\Enums\Order\PaymentModeEnum;
use App\Enums\Order\PaymentStatus;
use App\Enums\Order\TransactionStatus;
use App\Enums\Order\TransactionType;
use App\Enums\Order\ValidationStatus;
use App\Events\OrderIsValidated;
use App\Lib\Helpers\ToolboxHelper;
use App\Models\Customer\Customer;
use App\Models\Merchandise\Product;
use App\Models\Payment\Transaction;
use App\Notifications\Order\OrderValidationStatusChanged;
use App\Notifications\Order\OrderDeliveryStatusChanged;
use Gloudemans\Shoppingcart\Cart;
use Gloudemans\Shoppingcart\CartItem;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Notification;
use Illuminate\Support\Facades\Session;
use Illuminate\Validation\ValidationException;
use Kwaadpepper\Enum\Traits\CastsEnums;
use Money\Money;

/**
 * Order
 *
 * @property-read string                       $reference         The order unique reference string.
 * @property object                            $basket            The order serialized basket.
 * @property object                            $shipped_basket    The order serialized basket delivered to customer.
 * @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 from the customer in cents.
 * @property integer                           $total_refund      Total refunded to the customer.
 * @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 ?
 * @property-read boolean $can_be_refund    Can the order be refund ?
 *
 * @package App\Models
 */
class Order extends Model
{
    use CastsEnums;
    use HasFactory;

    /**
     * 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,
        'shipped_basket' => '{}',
        'total_refund' => 0
    ];

    /**
     * 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',
        'shipped_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 ($model->validation_status->equals(ValidationStatus::validated())) {
                OrderIsValidated::dispatchUnless($model->mail_sent, $model);
            }

            /** @var \App\Models\Customer\Customer|null */
            $customer = $model->customer;

            if ($model->validation_status->value !== $model->getOriginal('validation_status')) {
                // * Notifiy customer
                $notification = new OrderValidationStatusChanged($model);
                if ($customer) {
                    $model->customer->notify($notification);
                } else {
                    // * AnonymousNotifiable with Notification Fake
                    Notification::route('mail', $model->email)->notifyNow($notification);
                }
                Session::flash('bo.info', trans('Le client recevra une notification sur l\'état de validation.'));

                // * Commande est prête.
                if ($model->delivery_status->equals(DeliveryStatus::ready())) {
                    // * Notifiy customer
                    $notification = new OrderDeliveryStatusChanged($model);
                    if ($customer) {
                        $model->customer->notify($notification);
                    } else {
                        // * AnonymousNotifiable with Notification Fake
                        Notification::route('mail', $model->email)->notifyNow($notification);
                    }
                    Session::flash('bo.info', trans('Le client recevra une notification sur l\'état de livraison.'));
                }
            } //end if

            // * Commande est annulée
            if (
                $model->validation_status->value !== $model->getOriginal('validation_status') and
                $model->validation_status->equals(ValidationStatus::cancelled())
            ) {
                // * Set le timeslot as soft deleted
                $model->timeslot()->delete();
            }
            // * Empecher la réactivation d'une commande (car le timeslot aura été perdu).
            if (
                $model->getOriginal('validation_status') === ValidationStatus::cancelled()->value and
                !$model->validation_status->equals(ValidationStatus::cancelled())
            ) {
                throw new \Error('This is not allowed');
            }
        });
        static::deleting(function () {
            throw new \Error('This is not allowed');
        });
    }

    /**
     * Get the route key for the model.
     *
     * @return string
     */
    public function getRouteKeyName()
    {
        return 'reference';
    }

    // * RELATIONSHIPS

    /**
     * HasMany transactions relation
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function transactions()
    {
        return $this->hasMany(Transaction::class);
    }

    /**
     * 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);
    }

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

    // * GETTER

    /**
     * Getter can_be_cancelled
     *
     * ! Logique modifiée pour refonte only here (sans paiement)
     *
     * On peut annuler la commande si :
     * - la livraison n'a pas encore été initié
     * - 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 &&
            // * Si le statut de livraison n'est pas récupéré
            $this->getOriginal('delivery_status') !== DeliveryStatus::recovered()->value;
    }

    /**
     * Getter can_be_refund
     *
     *
     * On peut rembourser la commande si le montant déjà remboursé est inférieur au montant payé
     *
     * @return boolean
     */
    public function getCanBeRefundAttribute(): bool
    {
        return $this->total_ttc > $this->total_refund;
    }

    // * SETTER

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

    // * METHODS

    /**
     * Get the transaction used for payment
     *
     * @return null|\App\Models\Payment\Transaction
     */
    public function getTransactionUsedForPayment(): ?Transaction
    {
        /** @var \App\Models\Payment\Transaction|null $transaction */
        $transaction = $this->transactions()->where('type', TransactionType::debit())
            ->where('status', TransactionStatus::validated())->first();

        // If no paid transaction there is, try to fetch an inshop transaction.
        if (!$transaction and $this->deliveryMode->mode->equals(DeliveryModeEnum::inShop())) {
            $transaction = $this->transactions()->where('type', TransactionType::debit())
                ->where('payment_mode', PaymentModeEnum::inShop())
                ->where('status', TransactionStatus::pending())
                ->first();
        }

        return $transaction;
    }

    /**
     * Total payed by the customer
     *
     * @return \Money\Money
     */
    public function getTotalPayed(): Money
    {
        return $this->transactions->reduce(function ($previous, Transaction $actual) {
            /** @var \Money\Money|null $previous */
            /** @var \App\Models\Payment\Transaction $actual */
            $out = new Money(0, app('phpMoneyCurrency'));
            if ($previous) {
                $out = $out->add($previous);
            }
            if ($actual->type->equals(TransactionType::debit())) {
                $out = $out->add($actual->amount);
            }
            return $out;
        }) ?? new Money(0, app('phpMoneyCurrency'));
    }

    /**
     * Total refunded to the customer
     *
     * @return \Money\Money
     */
    public function getTotalRefunded(): Money
    {
        return $this->transactions->reduce(function ($previous, Transaction $actual) {
            /** @var \Money\Money|null $previous */
            /** @var \App\Models\Payment\Transaction $actual */
            $out = new Money(0, app('phpMoneyCurrency'));
            if ($previous) {
                $out = $out->add($previous);
            }
            if ($actual->type->equals(TransactionType::credit())) {
                $out = $out->add($actual->amount);
            }
            return $out;
        }) ?? new Money(0, app('phpMoneyCurrency'));
    }

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

    /**
     * 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->id}' ne peut être annulée"
            ]);
        }

        if (
            $model->validation_status->equals(ValidationStatus::cancelled()) and
            $model->getTransactionUsedForPayment()->payment_mode->equals(PaymentModeEnum::inShop()) and
            !\in_array($model->payment_status, [PaymentStatus::failed(), PaymentStatus::pending()])
        ) {
            throw ValidationException::withMessages([
                'messages' =>
                "La commande '{$model->id}' ne peut être annulée car le remboursement click and collect n'est pas géré"
            ]);
        }
    }

    /**
     * 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->id}' 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->id}' 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->id}' est annulée"
            ]);
        }
    }

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

    /**
     * Generate partial refunded items basket
     *
     * ! (diff de basket - shipped basket)
     *
     * @return \Illuminate\Support\Collection<\Gloudemans\Shoppingcart\CartItem>
     */
    public function getPartialRefundedBasket(): Collection
    {
        $shippedBastetItems = collect($this->shipped_basket);
        // * FIXME: Same code here as in Bo/OrderController::prepareSubmit.
        // ! Ici on veux réutiliser le cart calculator (diff de basket - shipped basket).
        $cart = ToolboxHelper::createVirtualCart(\collect($this->basket)
            ->map(function (object $basketItem) use ($shippedBastetItems) {
                if (!$shippedBastetItems->contains('id', $basketItem->id)) {
                    return null;
                }
                $cartItem = ToolboxHelper::basketItemObjectToCartItem($basketItem);
                $cartItem->associate(Product::query()->where('id', $cartItem->id)->first());
                return $cartItem;
            })->filter());

        // * Update virtual basket with actual content
        collect($this->shipped_basket)->each(function (object $basketItem) use ($cart) {
            /** @var \Gloudemans\Shoppingcart\CartItem $cartItem */
            $cartItem = $cart->search(function (CartItem $cartItem) use ($basketItem) {
                return $cartItem->id === $basketItem->id;
            })->first();
            $newQty   = max($cartItem->qty - $basketItem->qty, 0);
            // * Update Qty or remove item from the cart.
            if (!$newQty) {
                $cart->remove($cartItem->rowId);
                return;
            }
            $cartItem->setQuantity($newQty);
            // ! https://github.com/bumbummen99/LaravelShoppingcart/pull/181
            // * Note Lib is is actually refactoring for laravel 9 php8  only
            // * https://github.com/bumbummen99/LaravelShoppingcart/pull/145
            // ! These lines are required to prevent amount bug.
            $cartItem->setTaxRate($basketItem->options->tax_rate / 100);
            $cartItem->setDiscountRate($basketItem->options->discount_rate);
        });

        $virtualOrder = new self();
        $virtualOrder->assignBasket($cart);
        return collect($virtualOrder->basket);
    }
}