public IActionResult RateBook([FromBody] RatePostModel rate)
{
BookDTO bookToRate = _bookProvider.Get(rate.RatedEssenceId);
if (bookToRate == null)
{
return(BadRequest());
}
RateDTO yourRate = new RateDTO {
BookId = rate.RatedEssenceId,
UserId = rate.UserId,
Value = rate.Value
};
List <RateDTO> allRates = _provider.GetAll().ToList();
if (allRates.Any())
{
bool isFinded = false;
foreach (var r in allRates)
{
if (r.BookId == rate.RatedEssenceId && r.UserId == rate.UserId)
{
isFinded = true;
yourRate.Id = r.Id;
bookToRate.Rate += (yourRate.Value - r.Value) / bookToRate.RatesAmount;
_dataWriter.Update(yourRate);
_bookDataWriter.Update(bookToRate);
break;
}
}
if (!isFinded)
{
uint amount = bookToRate.RatesAmount;
bookToRate.RatesAmount++;
bookToRate.Rate = (bookToRate.Rate * amount + yourRate.Value) / bookToRate.RatesAmount;
_bookDataWriter.Update(bookToRate);
_dataWriter.Add(yourRate);
}
}
else
{
uint amount = bookToRate.RatesAmount;
bookToRate.RatesAmount++;
bookToRate.Rate = (bookToRate.Rate * amount + yourRate.Value) / bookToRate.RatesAmount;
_bookDataWriter.Update(bookToRate);
_dataWriter.Add(yourRate);
}
return(Ok());
}