public async Task<IHttpActionResult> CreateComment(NewCommentDTO model)
{
if (!ModelState.IsValid) return BadRequest();
var result = await _commentService.CreateComment(model);
if(result.Success)
{
return Ok();
}
return BadRequest(result.Error);
}
public async Task<ValidationResult> CreateComment(NewCommentDTO model)
{
try
{
//Firstly check the Event exists
Event evnt = await _eventRepo.Get(x => x.Id == model.EventId)
.Include(x => x.Comments)
.Include(x => x.Members.Select(u => u.User))
.FirstOrDefaultAsync();
if (evnt == null)
return AddError("Event does not exist");
//Make sure the creator is a member of the event
bool isMember = evnt.Members.Any(x => x.UserId == model.CreatorId);
if(!isMember)
return AddError("The creator provided isn't a member of the event!");
//Create the new Comment entity
EventComment comment = new EventComment
{
CreatorId = model.CreatorId,
EventId = evnt.Id,
Body = model.Body,
OrderNo = 0
};
//Set the correct order number
int nextNo = 0;
foreach (var c in evnt.Comments)
{
nextNo = c.OrderNo > nextNo ? c.OrderNo : nextNo;
}
comment.OrderNo = nextNo + 1;
//Attached comment to event
evnt.Comments.Add(comment);
//Update database
_eventRepo.Update(evnt);
await SaveChangesAsync();
//Get members deviceIds
List<string> deviceIds = new List<string>();
foreach (var member in evnt.Members)
{
if(member.UserId != model.CreatorId)
deviceIds.Add(member.User.DeviceId);
}
if (deviceIds.Any())
{
//Finally send out notifications to members
string authorName = evnt.Members.Where(x => x.UserId == model.CreatorId)
.First().User.Name;
string message = $"{authorName} has posted a comment on \"{evnt.Title}\"";
AndroidGCMPushNotification.SendNotification(deviceIds, message);
}
Result.Success = true;
return Result;
}
catch (Exception ex)
{
return AddError(ex.Message);
}
}
