public async Task <ChatMessageModel> PostMessage(PostChatMessageRequestModel model)
{
var currentUser = await _authService.GetAuthorizedUser();
var channel = await DbContext.ChatChannels.FindAsync(model.ChannelId);
if (channel == null)
{
throw new EntityNotFoundException("Channel with specified id is not found");
}
var dbAttachmentsCount = await DbContext.FileUploads
.CountAsync(_ => model.Attachments.Contains(_.Id));
if (dbAttachmentsCount < model.Attachments.Count)
{
throw new EntityNotFoundException("One of the specified attachment id is not found");
}
var message = new ChatMessage
{
ChannelId = channel.Id,
SenderId = currentUser.Id,
Message = model.Text,
Attachments = model.Attachments.Select(id => new ChatMessageAttachment
{
UploadId = id
}).ToList(),
};
await DbContext.AddAsync(message);
await DbContext.SaveChangesAsync();
await _chatProvider.BroadcastMessage(currentUser, message);
return(await GetMessage(message.Id));
}
