public async Task <Result <PlaylistDto> > Handle(AddSubredditToPlaylistCommand command, CancellationToken cancellationToken)
{
var playlist = await _context.Playlists.Include(x => x.Subreddits).FirstOrDefaultAsync(playlist => playlist.Id == command.PlaylistId);
if (playlist == null)
{
return((await Result <PlaylistDto> .FailAsync("Playlist not found")) as Result <PlaylistDto>);
}
if (playlist.Subreddits.Any(subreddit => subreddit.Id == command.SubredditId))
{
return((await Result <PlaylistDto> .FailAsync("Subreddit is already in the playlist")) as Result <PlaylistDto>);
}
var subreddit = await _context.Subreddits.FirstOrDefaultAsync(subreddit => subreddit.Id == command.SubredditId);
if (subreddit == null)
{
return((await Result <PlaylistDto> .FailAsync("Subreddit not found")) as Result <PlaylistDto>);
}
playlist.Subreddits.Add(subreddit);
_context.Playlists.Update(playlist);
await _context.SaveChangesAsync(cancellationToken);
var dto = _mapper.Map <PlaylistDto>(playlist);
dto.Subreddits = _mapper.Map <IEnumerable <SubredditDto> >(playlist.Subreddits);
return((await Result <PlaylistDto> .SuccessAsync(dto, "Subreddit added")) as Result <PlaylistDto>);
}
public async Task <IActionResult> AddSubreddit(AddSubredditToPlaylistCommand command)
{
return(Ok(await Mediator.Send(command)));
}
