<?php

namespace App\Services\GoodSku;

use App\Events\BatchStockUpdateEvent;
use App\Models\CombinationGood;
use App\Models\DailyStockRecord;
use App\Models\GoodsSku;
use App\Utils\DateTimeUtils;

class GoodSkuService
{

    public function inventory(array $requestSkus)
    {
        $requestSkusMap = collect($requestSkus)->pluck(null, 'external_sku_id')->toArray();
        $externalSkuIds = collect($requestSkus)->pluck('external_sku_id')->toArray();
        $skus = GoodsSku::query()
            ->whereIn('external_sku_id', $externalSkuIds)
            ->get(['id', 'external_sku_id'])
            ->toArray();
        $today = DateTimeUtils::getToday();
        $dateTime = date('Y-m-d H:i:s');
        $updateIds = [];
        foreach ($skus as $sku) {
            if (!in_array($sku['external_sku_id'], $externalSkuIds)) {
                continue;
            }
            // 更新
            $record = DailyStockRecord::query()->where('sku_id', $sku['id'])->where('day', $today)->firstOrCreate([
                'sku_id' => $sku['id'],
                'day' => $today,
            ]);
            $record->inventory = $requestSkusMap[$sku['external_sku_id']]['inventory'];
            $record->inventory_time = $dateTime;
            $record->save();
            //查询sku当前未发货的数量 目前数据看着有问题暂不操作

            //库存修改 盘点是直接覆盖所以这里加个锁
            GoodsSku::query()->where('id', $sku['id'])->lockForUpdate()->update([
                'stock' => $requestSkusMap[$sku['external_sku_id']]['inventory']
            ]);
            $updateIds[] = $sku['id'];
        }
        // 批量更新
        event(new BatchStockUpdateEvent($updateIds));
    }

    public static function computeSkuStock(array $goodsSkuItem, array $v): array
    {
        $updateIds = [];
        if (!empty($v['is_combination'])) {
            GoodsSku::query()->where('external_sku_id', $v['external_sku_id'])->update([
                'stock' => $goodsSkuItem['stock'] + $v['num'],
                'sale_stock' => $goodsSkuItem['sale_stock'] + $v['num'],
                'cost' => number_format(($goodsSkuItem['stock'] * $goodsSkuItem['cost'] + $v['cost'] * $v['num'])
                    / ($goodsSkuItem['stock'] + $v['num']), 2),
            ]);
            $updateIds[] = $goodsSkuItem['id'];
        } else {
            //组合商品 这里需要重新获取 减少更新丢失概率 后续考虑库存管理用redis
            $combinationGood = CombinationGood::query()->with('goodsSkuItem:id,stock,sale_stock')
                ->where('goods_sku_id', $goodsSkuItem['id'])->get();
            foreach ($combinationGood as $item) {
                GoodsSku::query()->where('id', $item['goodsSkuItem']['id'])->update([
                    'stock' => $item['goodsSkuItem']['stock'] + $v['num'] * $item['item_num'],
                    'sale_stock' => $item['goodsSkuItem']['sale_stock'] + $v['num'] * $item['item_num'],
                ]);
                $updateIds[] = $item['goodsSkuItem']['id'];
            }
        }
        return $updateIds;
    }

}