<?php

declare(strict_types=1);

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class StockOrder extends Model
{
    use HasFactory, SoftDeletes;

    public const STATUS_ORDERED = 'ordered';

    public const STATUS_IN_STOCK = 'in_stock';

    public const STATUS_SHIPPED = 'shipped';

    public const STATUS_NAMES = [
        self::STATUS_ORDERED => 'Заказан',
        self::STATUS_IN_STOCK => 'На складе',
        self::STATUS_SHIPPED => 'Отгружено',
    ];

    protected $fillable = [
        'common_catalog_item_id',
        'order_number',
        'status',
        'ordered_quantity',
        'available_quantity',
        'note',
        'user_id',
    ];

    protected function casts(): array
    {
        return [
            'common_catalog_item_id' => 'integer',
            'ordered_quantity' => 'integer',
            'available_quantity' => 'integer',
            'user_id' => 'integer',
        ];
    }

    public function item(): BelongsTo
    {
        return $this->belongsTo(CommonCatalogItem::class, 'common_catalog_item_id');
    }

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function reservations(): HasMany
    {
        return $this->hasMany(StockReservation::class);
    }

    public function movements(): HasMany
    {
        return $this->hasMany(StockMovement::class);
    }

    public function getStatusNameAttribute(): string
    {
        return self::STATUS_NAMES[$this->status] ?? $this->status;
    }

    public function getReservedQuantityAttribute(): int
    {
        if (array_key_exists('active_reservations_sum_quantity', $this->attributes)) {
            return (int) $this->attributes['active_reservations_sum_quantity'];
        }

        return (int) $this->reservations()->active()->sum('quantity');
    }

    public function getFreeQuantityAttribute(): int
    {
        return max(0, $this->available_quantity - $this->reserved_quantity);
    }
}