public IActionResult CreatePlaylist([FromBody] GeneratePlaylistDTO model)
{
if (model == null)
{
return(BadRequest());
}
var userId = int.Parse(userManager.GetUserId(HttpContext.User));
var generatePaylistDTO = new GeneratePlaylistDTO
{
StartLocation = model.StartLocation,
Destination = model.Destination,
PlaylistName = model.PlaylistName,
RepeatArtist = model.RepeatArtist,
UseTopTracks = model.UseTopTracks,
GenrePercentage = model.GenrePercentage,
UserId = userId
};
var playlist = this.generateService.GeneratePlaylist(generatePaylistDTO).Result;
if (playlist == null)
{
return(BadRequest());
}
var playlistWithImage = this.playlistService.AttachImage(playlist).Result;
return(Created("post", playlistWithImage));
}
public async Task <IActionResult> Test()
{
//var add = await this._playlistService.AddPlaylistToFavoritesAsync(90, 1);
//var remove = await this._playlistService.RemovePlaylistFromFavoritesAsync(90, 1);
//var addAgain = await this._playlistService.AddPlaylistToFavoritesAsync(90, 1);
//List<string> genres = new List<string>() { "jazz" };
//List<int> durations = new List<int> { 0, 18767 };
//var playlists = await this._playlistService.GetAllPlaylistsAsync();
//var playlist1 = this._playlistService.FilterPlaylistsByName("Plovdiv", playlists);
//var playlist2 = await this._playlistService.FilterPlaylistsByGenreAsync(genres, playlist1);
//var playlist3 = this._playlistService.FilterPlaylistsByDuration(durations, playlist2);
//var playlistsMaster = await this._playlistService.FilterPlaylistsMasterAsync("Plovdiv", genres, durations);
// public int Id { get; set; }
//public string Title { get; set; }
//public Dictionary<string, int> GenrePercentage { get; set; }
//public User User { get; set; }
//public int UserId { get; set; }
//var editPlaylistDTO = new EditPlaylistDTO
//{
// Id = 88,
// Title = "To the mountain",
// GenrePercentage = new Dictionary<string, int> { { "pop", 50 }, { "jazz", 50 } },
// UserId = 2
//};
//var playlist = await this._playlistService.EditPlaylistAsync(editPlaylistDTO);
var playlist = new GeneratePlaylistDTO()
{
StartLocation = "Sofia",
Destination = "Ihtiman",
PlaylistName = "Ihtiman",
RepeatArtist = true,
UseTopTracks = true,
GenrePercentage = new Dictionary <string, int>()
{
{
"rock", 20
},
{
"metal", 40
},
{
"pop", 20
},
{
"jazz", 20
}
},
UserId = 2
};
var returnedPlaylist = await this._generatePlaylistService.GeneratePlaylist(playlist);
return(RedirectToAction(nameof(Index)));
}
public async Task <IActionResult> Create([Bind("Title," +
"StartLocationName, DestinationName," +
"RepeatArtist, TopTracks," +
"MetalPercentage, RockPercentage, PopPercentage, JazzPercentage")]
GeneratePlaylistViewModel genPlView)
{
if ((genPlView.MetalPercentage + genPlView.RockPercentage +
genPlView.PopPercentage + genPlView.JazzPercentage) > 100)
{
return(RedirectToAction("Create", "Playlists", new { error = TempData["Error"] = "Combined genre percentage must not exceed 100%" }));
}
var userId = int.Parse(userManager.GetUserId(HttpContext.User));
var genres = new Dictionary <string, int>();
genres.Add("metal", genPlView.MetalPercentage);
genres.Add("rock", genPlView.RockPercentage);
genres.Add("pop", genPlView.PopPercentage);
genres.Add("jazz", genPlView.JazzPercentage);
if (ModelState.IsValid)
{
var genPlaylistDTO = new GeneratePlaylistDTO()
{
PlaylistName = genPlView.Title,
StartLocation = genPlView.StartLocationName,
Destination = genPlView.DestinationName,
RepeatArtist = genPlView.RepeatArtist,
UseTopTracks = genPlView.TopTracks,
GenrePercentage = genres,
UserId = userId
};
PlaylistDTO playlistDTO = await generateService.GeneratePlaylist(genPlaylistDTO);
if (playlistDTO == null)
{
throw new ArgumentNullException("Something went wrong with playlist creation.");
}
var playlistDtoWithImg = await this.service.AttachImage(playlistDTO);
return(RedirectToAction("Details", new { id = playlistDtoWithImg.Id }));
}
return(RedirectToAction("Index", new { error = TempData["Error"] = "Playlist creation failed." }));
}
/// <summary>
/// Generates playlist corresponding to user's input and calls supporting methods to generate a collection of tracks,
/// finetune its duration, and set different properties of the playlist. Then the playlist is saved in the database.
/// </summary>
/// <param name="playlistDTO">DTO with all user's input needed for playlist generation</param>
/// <returns>DTO of the created playlist</returns>
public async Task <PlaylistDTO> GeneratePlaylist(GeneratePlaylistDTO playlistDTO)
{
double travelDuration = await GetTravelDuration(playlistDTO.StartLocation, playlistDTO.Destination);
List <Track> tracks = new List <Track>();
if (playlistDTO.UseTopTracks)
{
tracks.AddRange(GetTopTracks("rock", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
tracks.AddRange(GetTopTracks("metal", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
tracks.AddRange(GetTopTracks("pop", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
tracks.AddRange(GetTopTracks("jazz", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
}
else
{
tracks.AddRange(GetTracks("rock", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
tracks.AddRange(GetTracks("metal", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
tracks.AddRange(GetTracks("pop", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
tracks.AddRange(GetTracks("jazz", travelDuration, playlistDTO.GenrePercentage, playlistDTO.RepeatArtist).Result);
}
List <Track> finalPlaylist = FinetunePlaytime(travelDuration, tracks, playlistDTO.GenrePercentage).ToList();
double playtime = CalculatePlaytime(finalPlaylist);
var playlist = new Playlist()
{
User = playlistDTO.User,
UserId = playlistDTO.UserId,
Title = playlistDTO.PlaylistName,
UseTopTracks = playlistDTO.UseTopTracks,
RepeatArtist = playlistDTO.RepeatArtist,
StartLocation = playlistDTO.StartLocation,
Destination = playlistDTO.Destination,
TravelDuration = travelDuration,
PlaylistPlaytime = playtime,
PlaytimeString = GetPlaytimeString((int)playtime),
Rank = CalculateRank(finalPlaylist),
CreatedOn = this.dateTimeProvider.GetDateTime()
};
await this.context.Playlists.AddAsync(playlist);
await this.context.SaveChangesAsync();
var playlistFromDb = this.context.Playlists.FirstOrDefault(x => x.Title == playlist.Title);
if (playlistFromDb == null)
{
throw new ArgumentNullException("Playlist not found in the database.");
}
List <PlaylistTrack> playlistTracks = finalPlaylist.Select(x => new PlaylistTrack(x.Id, playlistFromDb.Id)).ToList();
playlistFromDb.TracksCount = playlistTracks.Count;
List <string> genresStringList = playlistDTO.GenrePercentage.Where(x => x.Value > 0).Select(y => y.Key).ToList();
List <Genre> genres = this.context.Genres.Where(x => genresStringList.Contains(x.Name)).ToList();
List <PlaylistGenre> playlistGenres = genres.Select(x => new PlaylistGenre(x.Id, playlistFromDb.Id)).ToList();
playlistFromDb.GenresCount = genres.Count;
await this.context.PlaylistTracks.AddRangeAsync(playlistTracks);
await this.context.PlaylistGenres.AddRangeAsync(playlistGenres);
await this.context.SaveChangesAsync();
return(new PlaylistDTO(playlist));
}
