<?php

namespace Modules\Mall\Models\Traits;

use Modules\Mall\Models\Goods;
use Modules\User\Models\User;

trait GoodsAttribute
{

    /**
     * Notes: 获取商品库存
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:17
     * @param  int  $user_id
     * @return int
     */
    public function getGoodsStock(int $user_id = 0): int
    {
        if ($this->goods->type == Goods::TYPE_SINGLE) {

        }
        return $this->stock ?? 0;
    }

    /**
     * Notes: 扣除库存方法
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:12
     * @param $stock
     * @param $user_id
     * @return bool
     */
    public function deductStock($stock, $user_id): bool
    {
        if ($this->goods->channel == Goods::CHANNEL_FREE) {
            $user = User::find($user_id);
            $user->addHold($stock);
        } else {
            $this->decrement('stock', $stock);
        }
        return true;
    }

    /**
     * Notes: 增加库存方法
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:12
     * @param        $stock
     */
    public function addStock($stock)
    {
        $this->increment('stock', $stock);
    }

    /**
     * Notes: 增加销量
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:12
     * @param $sold
     */
    public function addSold($sold)
    {
        $this->goods()->increment('sales', $sold);
    }

    /**
     * Notes: 减少销量
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:12
     * @param $sold
     */
    public function deductSold($sold)
    {
        $this->goods()->decrement('sales', $sold);
    }

    /**
     * Notes: 获取卖家ID
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:14
     * @return int
     */
    public function getShopIdAttribute(): int
    {
        return $this->goods->shop_id ?? 0;
    }

    /**
     * Notes: 获取卖家type
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:14
     * @return string|null
     */
    public function getShopTypeAttribute(): ?string
    {
        if ($this->goods && $this->goods->shop) {
            return get_class($this->goods->shop);
        }

        return null;
    }

    /**
     * Notes: 获取卖家名称
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:14
     * @return false|string|null
     */
    public function getShopNameAttribute()
    {
        if ($this->goods && $this->goods->shop) {
            return $this->goods->shop->name;
        }

        return null;
    }

    /**
     * Notes: 重量
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:15
     * @return int
     */
    public function getGoodsWeight(): int
    {
        return $this->weight ?? 0;
    }

    /**
     * Notes: 返回source
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:15
     * @return array
     */
    public function getSource(): array
    {
        return [
            'goods_sku_id'      => $this->id,
            'goods_id'          => $this->goods_id,
            'deduct_stock_type' => $this->goods->deduct_stock_type,
            'goods_name'        => $this->getGoodsName(),
            //            'unit'              => $this->getItemValue(),
            'cover'             => $this->goods->cover_url,
            'price'             => $this->getItemPrice(),
            'stock'             => $this->getGoodsStock(),
            'weight'            => $this->weight,
            'is_post_sale'      => $this->goods->is_post_sale ?? 0,
            'score'             => $this->score,  // 积分/原石
            'assets'            => $this->assets,  // 资产
        ];
    }

    /**
     * Notes: 获取商品名称
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:19
     * @return string
     */
    public function getGoodsName(): string
    {
        return $this->goods->name ?? '--';
    }

    /**
     * Notes: 获取商品规格名称
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:16
     * @return string
     */
    public function getItemValue(): string
    {
        switch ($this->goods->type) {
            case Goods::TYPE_SINGLE:
                return '';
            case Goods::TYPE_MULTIPLE:
                return $this->unit ?? '';
        }
    }

    /**
     * Notes: 获取商品单价
     *
     * @Author: 玄尘
     * @Date  : 2021/5/14 11:16
     * @return mixed
     */
    public function getItemPrice()
    {
        $tags = $this->goods->tags()->pluck('tag_id')->toArray();
        //1 为试用产品
        if (in_array(1, $tags)) {
            return 0;
        }

        return $this->price;
    }

}