<?php

namespace App\Models;

use App\Casts\JsonArray;
use App\Casts\Price;
use Dcat\Admin\Traits\HasDateTimeFormatter;
use EloquentFilter\Filterable;
use Illuminate\Database\Eloquent\Model;

class ProductSku extends Model
{
    use Filterable;
    use HasDateTimeFormatter;

    /**
     * @var array
     */
    protected $casts = [
        'images' => JsonArray::class,
        'sell_price' => Price::class,
        'market_price' => Price::class,
        'cost_price' => Price::class,
        'vip_price' => Price::class,
        'attrs' => JsonArray::class,
        'specs' => 'json',
        'release_at' => 'datetime',
    ];

    /**
     * @var array
     */
    protected $fillable = [
        'spu_id',
        'name',
        'subtitle',
        'category_id',
        'codcovere',
        'images',
        'sell_price',
        'market_price',
        'cost_price',
        'vip_price',
        'media',
        'weight',
        'attrs',
        'specs',
        'stock',
        'sales',
        'release_at',
    ];

    /**
     * 仅查询已上架的商品
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeIsRelease($query)
    {
        return $query->whereNotNull('release_at');
    }

    /**
     * 此商品所属的分类
     */
    public function category()
    {
        return $this->belongsTo(ProductCategory::class, 'category_id');
    }

    /**
     * 此商品所属的分区
     */
    public function parts()
    {
        return $this->belongsToMany(ProductPart::class, ProductPartSku::class, 'sku_id', 'part_id');
    }
}