<?php

namespace App\Exports;

use App\Models\Log;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use App\Models\GoodsSku;
use Illuminate\Support\Collection;

class GoodsSkusExport implements FromCollection, ShouldAutoSize
{
    private $data;
    private $type;

    public function __construct($type)
    {
        $this->type = $type;
        $this->data = $this->createData();
    }

    /**
    * @return \Illuminate\Support\Collection
    */
    public function collection()
    {
        return new Collection($this->data);
    }

    private function createData()
    {
        $headTitle = [
            '商品编码',
            '商品名称',
            '商品种类',
            '商品品牌',
            '规格编码',
            '规格名称',
            '成本',
            '库存',
        ];
        $inventoryTime = strtotime(date('Y-m-d 07:00:00'));
        $ids = Log::query()->where('target_type', 'goods_sku')
            ->where('target_field', $this->type)
            ->where('created_at', '>', $inventoryTime)
            ->pluck('target_id')
            ->toArray();
        $data = GoodsSku::query()
            ->when($ids, function ($query, $ids) {
                return $query->whereIn('id', $ids);
            })
            ->with(['goods' => function ($query) {
                $query->with(['type:id,name', 'brand:id,name']);
            }])
            ->get()
            ->toArray();
        if (empty($data)) {
            return [$headTitle];
        }
        $bodyData = [];
        foreach ($data as $item) {
            $arr[0] = $item['goods']['goods_code'];
            $arr[1] = $item['goods']['title'];
            $arr[2] = $item['goods']['type']['name'];
            $arr[3] = $item['goods']['brand']['name'];
            $arr[4] = $item['sku_code'];
            $arr[5] = $item['title'];
            $arr[6] = $item['cost'];
            $arr[7] = $item['stock'];
            $bodyData[] = $arr;
        }
        unset($arr);
        return [$headTitle, $bodyData];
    }
}