<?php

namespace App\Models;

use Dcat\Admin\Traits\HasDateTimeFormatter;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class ProductPart extends Model
{
    use Concerns\HasShowable;
    use HasFactory;
    use HasDateTimeFormatter;

    /**
     * @var array
     */
    protected $attributes = [
        'is_show' => false,
    ];

    /**
     * @var array
     */
    protected $fillable = [
        'key',
        'name',
        'is_show',
    ];

    /**
     * @var array
     */
    protected $casts = [
        'is_show' => 'bool',
    ];

    /**
     * 属于此分区的商品关系
     *
     * @return void
     */
    public function partSkus()
    {
        return $this->hasMany(ProductPartSku::class, 'part_id')->orderBy('sort', 'desc');
    }

    public function skus()
    {
        return $this->belongsToMany(ProductSku::class, ProductPartSku::class, 'part_id', 'sku_id')->withTimestamps();
    }

    public function spus()
    {
        return $this->belongsToMany(ProductSpu::class, ProductPartSpu::class, 'part_id', 'spu_id')->withTimestamps();
    }

    /**
     * 此分区购买赠送的券关系
     */
    public function coupons()
    {
        return $this->hasMany(ProductPartCoupon::class, 'part_id');
    }

    /**
     * 返回实际关联的券
     * @return  queryBuilder
     */
    public function getCoupons()
    {
        return Coupon::whereIn('id', $this->coupons->pluck('coupon_id')->toArray());
    }
}