public static TweetVM MapTweetToViewModel(Tweet tweet, ApplicationUser user)
{
return new TweetVM()
{
TweetId = tweet.Id.ToString(),
Content = tweet.Content,
ImageUrl = (tweet.FilePath != null) ? tweet.FilePath : string.Empty,
ImageMimeType = (tweet.FileMimeType != null) ? tweet.FileMimeType : string.Empty,
TweetedByUserId = user.Id,
TweetedByFullName = user.FullName,
TweetedByUserName = user.UserName,
TweetedOn = tweet.CreatedOn,
RetweetedFromUserName = tweet.RetweetedFromUserName,
Latitude = tweet.Latitude,
Longitude = tweet.Longitude
};
}
public async Task<JsonResult> PostTweet(PostTweetVM tweet)
{
var result = new JsonServiceResult<TweetVM>();
try
{
var user = await GetCurrentUserAsync();
var now = DateTime.Now;
var file = tweet.File;
var newTweet = new Tweet()
{
Content = tweet.Content,
UserId = user.Id.ToObjectId(),
CreatedOn = now
};
if (tweet.LocationEnabled)
{
double latitude;
double longitude;
if (Double.TryParse(tweet.Latitude, NumberStyles.AllowDecimalPoint, NumberFormatInfo.InvariantInfo, out latitude)
&& Double.TryParse(tweet.Longitude, NumberStyles.AllowDecimalPoint, NumberFormatInfo.InvariantInfo, out longitude))
{
newTweet.Latitude = latitude;
newTweet.Longitude = longitude;
}
}
if (file != null)
{
var allowedExtensions = new string[] { ".jpg", ".png", ".gif" };
if (file.Length > 0)
{
var parsedContentDisposition = ContentDispositionHeaderValue.Parse(file.ContentDisposition);
var fileName = parsedContentDisposition.FileName.Trim('"');
string ext = Path.GetExtension(fileName).ToLower();
if (allowedExtensions.Contains(ext))
{
var userAsciiName = user.NormalizedUserName.ToAsciiString();
var fileNameHash = fileName.GetHashCode();
if (fileNameHash < 0)
fileNameHash = fileNameHash * -1;
var mediaDir = Path.Combine(_environment.WebRootPath, "media");
var userDir = Path.Combine(mediaDir, userAsciiName);
Directory.CreateDirectory(userDir);
var filePath = Path.Combine(userDir, fileNameHash.ToString());
await file.SaveAsAsync(string.Format("{0}{1}", filePath, ext));
newTweet.FileMimeType = file.ContentType;
newTweet.FilePath = string.Format("/media/{0}/{1}{2}", userAsciiName, fileNameHash, ext);
}
}
}
await _tweetManager.CreateTweet(newTweet);
var mentionedUserNames = TweetUtils.ExtractUserMentions(tweet.Content);
foreach (var mentionedUserName in mentionedUserNames)
{
var mentionedUser = await _userManager.FindByNameAsync(mentionedUserName.ToUpper());
if (mentionedUser != null)
{
await _notificationManager.CreateNewNotification(mentionedUser.Id.ToObjectId(), NotificationType.Mention, user.Id.ToObjectId(), newTweet.Id);
}
}
var viewModel = new TweetVM();
viewModel.Content = tweet.Content;
viewModel.TweetedByFullName = user.FullName;
viewModel.TweetedByUserName = user.UserName;
viewModel.TweetedOn = now;
result.Value = viewModel;
result.IsValid = true;
}
catch (Exception ex)
{
result.Message = ex.Message;
}
return Json(result);
}
public async Task CreateTweet(Tweet tweet)
{
await _repository.Tweets.InsertOneAsync(tweet);
}
