public async Task <BarReviewDTO> CreateBarReviewAsync(Guid barId, Guid userId, int rating, string comment)
{
var barReviewExists = await _cmContext.BarReviews.AnyAsync(br => br.UserId == userId && br.BarId == barId && br.DeletedOn == null);
if (barReviewExists)
{
throw new ArgumentException("This bar has already been reviewed by the user");
}
var bar = await _cmContext.Bars.Where(b => b.Id == barId && b.UnlistedOn == null).FirstOrDefaultAsync();
if (bar == null)
{
throw new ArgumentNullException("Bar is not available.");
}
var userExists = await _cmContext.Users.AnyAsync(u => u.Id == userId && u.DeletedOn == null);
if (!userExists)
{
throw new ArgumentNullException("User is not available");
}
if (rating < 1 || rating > 5)
{
throw new ArgumentOutOfRangeException("Rating must be bewtween 1 and 5.");
}
var barReview = new BarReview();
barReview.BarId = barId;
barReview.UserId = userId;
barReview.Rating = rating;
barReview.Comment = comment;
barReview.ReviewedOn = DateTime.UtcNow;
try
{
bar.AvgRating = await this.CalculateAvgRating(barId, rating);
_cmContext.BarReviews.Add(barReview);
await _cmContext.SaveChangesAsync();
}
catch (Exception)
{
throw;
}
var barReviewDTO = barReview.BarMapReviewDTO();
return(barReviewDTO);
}
