<?php
// +----------------------------------------------------------------------
// | Author: ScottPan Team 
// +----------------------------------------------------------------------

namespace app\services\product;

/**
 * 本项目自有库存变更服务，不依赖 CRMEB 商业授权基础类。
 */
class StockMutationService
{
    public function decreaseStockIncreaseSales($model, array $where, int $num, string $stock, string $sales): bool
    {
        if ($num <= 0) {
            return false;
        }

        $affected = $model->where($where)
            ->where($stock, '>=', $num)
            ->dec($stock, $num)
            ->inc($sales, $num)
            ->update();

        return (int)$affected > 0;
    }

    public function increaseStockDecreaseSales($model, array $where, int $num, string $stock, string $sales): bool
    {
        if ($num <= 0) {
            return false;
        }

        $affected = $model->where($where)
            ->where($sales, '>=', $num)
            ->inc($stock, $num)
            ->dec($sales, $num)
            ->update();

        return (int)$affected > 0;
    }
}