public async Task <BotResponseCode> TryAddTrackToPlaylist(UpdateDto updateDto)
{
if (string.IsNullOrEmpty(updateDto.ParsedTrackId))
{
return(BotResponseCode.NoAction);
}
var existingTrackInPlaylist = await _trackRepository.Get(updateDto.ParsedTrackId, updateDto.Chat.PlaylistId);
// Check if the track already exists in the playlist.
if (existingTrackInPlaylist != null)
{
string text;
if (existingTrackInPlaylist.State == TrackState.RemovedByDownvotes)
{
text = $"This track was previously posted, but it was downvoted and removed from the {_spotifyLinkHelper.GetMarkdownLinkToPlaylist(updateDto.Chat.PlaylistId, "playlist")}.";
}
else
{
text = $"This track is already added to the {_spotifyLinkHelper.GetMarkdownLinkToPlaylist(updateDto.Chat.PlaylistId, "playlist")}!";
}
await _sendMessageService.SendTextMessage(updateDto.Chat.Id, text);
return(BotResponseCode.TrackAlreadyExists);
}
var spotifyClient = await _spotifyClientFactory.Create(updateDto.Chat.AdminUserId);
// We can't continue if we can't use the spotify api.
if (spotifyClient == null)
{
await _sendMessageService.SendTextMessage(updateDto.Chat.Id, "Spoti-bot is not authorized to add this track to the Spotify playlist.");
return(BotResponseCode.NoAction);
}
// Get the track from the spotify api.
var newTrack = await _spotifyClientService.GetTrack(spotifyClient, updateDto.ParsedTrackId);
if (newTrack == null)
{
await _sendMessageService.SendTextMessage(updateDto.Chat.Id, $"Track not found in Spotify api :(");
return(BotResponseCode.NoAction);
}
await AddTrack(spotifyClient, updateDto.ParsedUser, newTrack, updateDto.Chat.PlaylistId);
// Reply that the message has been added successfully.
await SendReplyMessage(updateDto, newTrack);
// Add the track to my queue.
await _spotifyClientService.AddToQueue(spotifyClient, newTrack);
return(BotResponseCode.TrackAddedToPlaylist);
}
/// <summary>
/// When a track is added to the playlist, get a nice response text to send to the chat.
/// </summary>
/// <param name="message">The message that contains the added trackId.</param>
/// <param name="track">The track that was added.</param>
/// <returns>A text to reply to the chat with.</returns>
public string GetSuccessResponseText(UpdateDto updateDto, Track track)
{
var successMessage = $"*{track.Name}*\n" +
$"{track.FirstArtistName} · {track.AlbumName}\n\n" +
$"Track added to the {_spotifyLinkHelper.GetMarkdownLinkToPlaylist(track.PlaylistId, "playlist")}!";
// TODO: inject random wrapper so this service is testable.
var random = new Random();
if (!ShouldAddAwesomeResponse(random))
{
return(successMessage);
}
var firstName = updateDto.User?.FirstName;
if (string.IsNullOrEmpty(firstName))
{
return(successMessage);
}
return(GetRandomAwesomeResponse(random, successMessage, firstName, track));
}
/// <summary>
/// Validates if all the commands requirements were met.
/// </summary>
/// <returns>An empty string if all requirements were met, or an error message.</returns>
private async Task <string> ValidateRequirements(TCommand command, UpdateDto updateDto)
{
// TODO: replace with fluent validation.
if (command.HasAttribute <TCommand, RequiresPrivateChatAttribute>() && updateDto.ParsedChat?.Type != Chats.ChatType.Private)
{
return($"The {command} command is only supported in private chats.");
}
if (command.HasAttribute <TCommand, RequiresChatAttribute>() && updateDto.Chat == null)
{
return($"Spoti-bot first needs to be added to this chat by sending the {Command.Start.ToDescriptionString()} command.");
}
if (command.HasAttribute <TCommand, RequiresNoChatAttribute>() && updateDto.Chat != null)
{
var admin = await _userRepository.Get(updateDto.Chat.AdminUserId);
// A chat should always have an admin.
if (admin == null)
{
throw new ChatAdminNullException(updateDto.Chat.Id, updateDto.Chat.AdminUserId);
}
if (updateDto.User.Id != admin.Id)
{
return($"Spoti-bot is already added to this chat, {admin.FirstName} is it's admin.");
}
else
{
return($"Spoti-bot is already added to this chat, you are it's admin.");
}
}
if (command.HasAttribute <TCommand, RequiresChatAdminAttribute>())
{
if (updateDto.Chat == null)
{
return($"Spoti-bot first needs to be added to this chat by sending the {Command.Start.ToDescriptionString()} command.");
}
var admin = await _userRepository.Get(updateDto.Chat.AdminUserId);
// A chat should always have an admin.
if (admin == null)
{
throw new ChatAdminNullException(updateDto.Chat.Id, updateDto.Chat.AdminUserId);
}
if (updateDto.User.Id != admin.Id)
{
return($"Only the chat admin ({admin.FirstName}) can use this command.");
}
}
if (command.HasAttribute <TCommand, RequiresPlaylistAttribute>() && updateDto.Playlist == null)
{
return($"Please set a playlist first, with the {Command.SetPlaylist.ToDescriptionString()} command.");
}
if (command.HasAttribute <TCommand, RequiresNoPlaylistAttribute>() && updateDto.Playlist != null)
{
return($"This chat already has a { _spotifyLinkHelper.GetMarkdownLinkToPlaylist(updateDto.Playlist.Id, "playlist")} set.");
}
if (command.HasAttribute <TCommand, RequiresQueryAttribute>() && !_commandsService.HasQuery(updateDto.ParsedTextMessage, command))
{
var text = $"Please add a query after the {command.ToDescriptionString()} command.";
if (command.GetType() == typeof(Command) && (Command)(object)command == Command.SetPlaylist)
{
text += $"\n\nFor example:\n{command.ToDescriptionString()} https://open.spotify.com/playlist/37i9dQZEVXbMDoHDwVN2tF";
}
return(text);
}
return(string.Empty);
}
