public async Task <bool> OutboundProductExistsAsync(OutboundProductAddOrUpdateDto product)
{
return(await _context.Stocks.AnyAsync(x =>
x.ProductName == product.ProductName &&
x.ProductSpecification == product.ProductSpecification &&
x.Amout >= product.Amout));
}
public void StockOut(OutboundProductAddOrUpdateDto outboundProductAddOrUpdateDto)
{
if (outboundProductAddOrUpdateDto == null)
{
throw new ArgumentNullException(nameof(outboundProductAddOrUpdateDto));
}
if (OutboundProductExistsAsync(outboundProductAddOrUpdateDto).Result) //如果存在名称和规格都一样的产品
{
var stock = _context.Stocks.FirstOrDefault(x =>
x.ProductName == outboundProductAddOrUpdateDto.ProductName &&
x.ProductSpecification == outboundProductAddOrUpdateDto.ProductSpecification);
stock.Amout -= outboundProductAddOrUpdateDto.Amout;
return;
}
Stock newStock = new Stock();
newStock.Id = Guid.NewGuid();
newStock.ProductName = outboundProductAddOrUpdateDto.ProductName;
newStock.ProductSpecification = outboundProductAddOrUpdateDto.ProductSpecification;
newStock.Amout = outboundProductAddOrUpdateDto.Amout;
_context.Stocks.Add(newStock);
}
