public async Task <ActionResult> Upload(MediaUploadRequestVM vm, IFormFile file)
{
try
{
var result = await _media.UploadAsync(vm, file, User);
result.ThumbnailPath = Url.Content(result.ThumbnailPath);
await _db.SaveChangesAsync();
if (!result.IsProcessed)
{
_workerAlarm.FireNewEncoderJob();
}
return(Json(result));
}
catch (Exception ex)
{
return(Json(new
{
Error = true,
Description = ex.Message
}));
}
}
/// <summary>
/// Uploads a new media file.
/// </summary>
public async Task <MediaUploadResultVM> UploadAsync(MediaUploadRequestVM vm, IFormFile file, ClaimsPrincipal principal)
{
var id = Guid.NewGuid();
var key = PageHelper.GetMediaKey(id);
var handler = _mediaHandlers.FirstOrDefault(x => x.SupportedMimeTypes.Contains(file.ContentType));
if (handler == null)
{
throw new UploadException("Неизвестный тип файла!");
}
var userId = _userMgr.GetUserId(principal);
var user = await _db.Users.GetAsync(x => x.Id == userId, "Пользователь не найден");
var paths = await SaveUploadAsync(file, key, handler);
var tags = await GetTagsForUploadedMedia(vm);
var meta = await handler.ExtractMetadataAsync(paths.LocalPath, file.ContentType);
var media = new Media
{
Id = id,
Key = key,
Type = handler.MediaType,
MimeType = file.ContentType,
Title = vm.Title,
FilePath = paths.UrlPath,
UploadDate = DateTimeOffset.Now,
Uploader = user,
IsProcessed = handler.IsImmediate,
Date = FuzzyDate.TryParse(vm.Date) != null
? vm.Date
: meta?.Date?.Date.ToString("yyyy.MM.dd", CultureInfo.InvariantCulture),
Tags = tags
};
_db.Media.Add(media);
if (!handler.IsImmediate)
{
_db.MediaJobs.Add(new MediaEncodingJob
{
Id = Guid.NewGuid(),
MediaId = media.Id
});
}
var changeset = await GetChangesetAsync(null, _mapper.Map <MediaEditorVM>(media), id, principal, null);
_db.Changes.Add(changeset);
return(_mapper.Map <MediaUploadResultVM>(media));
}
/// <summary>
/// Creates event \ location tags for the uploaded media.
/// </summary>
private async Task <List <MediaTag> > GetTagsForUploadedMedia(MediaUploadRequestVM vm)
{
var result = new List <MediaTag>();
var locId = vm.Location.TryParse <Guid>();
var evtId = vm.Event.TryParse <Guid>();
var tagIds = new[] { locId, evtId }
.Where(x => x != Guid.Empty)
.ToList();
var existing = tagIds.Any()
? await _db.Pages
.Where(x => tagIds.Contains(x.Id) && !x.IsDeleted)
.ToHashSetAsync(x => x.Id)
: null;
TryAddTag(vm.Location, locId, MediaTagType.Location);
TryAddTag(vm.Event, evtId, MediaTagType.Event);
return(result);
void TryAddTag(string title, Guid id, MediaTagType type)
{
if (string.IsNullOrEmpty(title))
{
return;
}
var tag = new MediaTag {
Type = type
};
if (existing?.Contains(id) == true)
{
tag.ObjectId = id;
}
else
{
tag.ObjectTitle = title;
}
result.Add(tag);
}
}
