public async Task <IActionResult> Create(ChannelCreation channelCreation)
{
AppUser currentUser = await _userManager.GetUserAsync(User);
if (currentUser.IsCreatingChannel)
{
ModelState.AddModelError(string.Empty, "User is already creating a channel.");
}
else if (ModelState.IsValid)
{
currentUser.IsCreatingChannel = true;
await _userManager.UpdateAsync(currentUser);
if (await _youTubeService.IsValidUrl(channelCreation.StartingMedia))
{
_channelTaskLoader.Enqueue(new ChannelCreationTask(channelCreation, DateTime.Now, currentUser.Id));
return(NoContent());
}
currentUser.IsCreatingChannel = false;
await _userManager.UpdateAsync(currentUser);
ModelState.AddModelError(nameof(channelCreation.StartingMedia), StartingMediaValidationMessage);
}
return(BadRequest(ModelState));
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
ChannelCreationTask channelCreationTask = await _channelCreationTaskUnloader.Dequeue();
ChannelCreation channelCreation = channelCreationTask.ChannelCreation;
DateTime createdAt = channelCreationTask.CreatedAt;
string ownerId = channelCreationTask.OwnerId;
IEnumerable <Track> tracks = (await _youTubeService.ExtractYouTubeVideos(channelCreation.StartingMedia))
.Select(video => video.ToTrack());
using (IServiceScope serviceScope = _serviceProvider.CreateScope())
{
IChannelRepository channelRepository = serviceScope.ServiceProvider.GetService <IChannelRepository>();
Channel createdChannel = await channelRepository.CreateChannel(channelCreation.Name,
channelCreation.Description,
createdAt,
ownerId,
tracks);
_channelTrackingStarter.StartTrackingChannel(createdChannel.Id);
IChannelCreatedNotifierHubProxy channelCreatedNotifier = serviceScope.ServiceProvider.GetService <IChannelCreatedNotifierHubProxy>();
await channelCreatedNotifier.NotifyChannelCreated(ownerId, createdChannel);
UserManager <AppUser> userManager = serviceScope.ServiceProvider.GetService <UserManager <AppUser> >();
AppUser owner = await userManager.FindByIdAsync(ownerId);
owner.IsCreatingChannel = false;
await userManager.UpdateAsync(owner);
}
}
}
