<?php

namespace App\Admin\Extensions\Grid\Tools\Product;

use App\Models\ProductSku;
use App\Models\ProductSpu;
use Dcat\Admin\Grid\Tools\AbstractTool;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;

class InitSkuBySpecs extends AbstractTool
{
    public function __construct($spu_id = 0, $title=null)
    {
        parent::__construct($title);
        $this->setKey($spu_id);
    }

    protected function authorize($user): bool
    {
        return $user->can('dcat.admin.product_spus.init_sku_by_specs');
    }

    /**
    * 按钮样式定义，默认 btn btn-white waves-effect
    *
    * @var string
    */
    protected $style = 'btn btn-primary';

    /**
     * 按钮文本
     *
     * @return string|void
     */
    public function title()
    {
        return __('admin_message.extensions.grid.tools.init_sku_by_specs');
    }

    public function confirm()
    {
        // 显示标题和内容
        return [__('admin_message.extensions.grid.init_sku_by_specs.confirm.title'), __('admin_message.extensions.grid.init_sku_by_specs.confirm.message')];
    }

    /**
     * 处理请求
     * 如果你的类中包含了此方法，则点击按钮后会自动向后端发起ajax请求，并且会通过此方法处理请求逻辑
     *
     * @param Request $request
     */
    public function handle(Request $request)
    {
        $nowTime = now();
        //获取SPU
        $spu = ProductSpu::with('specs')->findOrFail($this->getKey());
        $skuSpecs = [];
        foreach ($spu->specs as $spec) {
            $_items = [];
            foreach ($spec->items as $item) {
                $_items[] = [
                    'id' => $spec->id,
                    'name'=>$item['name'],
                    'price'=>$item['value'],
                ];
            }
            $skuSpecs[] = $_items;
        }
        //生成规格笛卡尔集
        $skuSpecs = Arr::crossJoin(...$skuSpecs);
        $insertData = [];
        //根据规格笛卡尔集生成预插入数据
        foreach ($skuSpecs as $skuSpec) {
            $_skuSpecs = [];
            $_price = 0;
            foreach ($skuSpec as $value) {
                $_skuSpecs[$value['id']] = $value['name'];
                $_price += $value['price'];
            }
            $insertData[] = [
                'spu_id'        => $spu->id,
                'name'          => trim($spu->name.' '.implode(' ', $_skuSpecs)),
                'subtitle'      => $spu->subtitle,
                'category_id'   => $spu->category_id,
                'cover'         => $spu->cover,
                'images'        => json_encode($spu->images),
                'description'   => $spu->description,
                'sell_price'    => bcadd($spu->sell_price, bcmul($_price, 100)),
                'market_price'  => $spu->market_price,
                'cost_price'    => $spu->cost_price,
                'vip_price'     => !is_null($spu->vip_price) ? bcadd($spu->vip_price, bcmul($_price, 100)) : null,
                'media'         => $spu->media,
                'weight'        => $spu->weight,
                'attrs'         => json_encode($spu->attrs),
                'specs'         => json_encode($_skuSpecs),
                'stock'         => $spu->stock,
                'sales'         => $spu->sales,
                'buynote_id'    => $spu->buynote_id,
                'created_at'    => $nowTime,
                'updated_at'    => $nowTime,
            ];
        }
        count($insertData)>0 && ProductSku::insert($insertData);

        return $this->response()->success(__('admin.update_succeeded'))->refresh();
    }
}