public static async Task <ListOfPlaylists> GetAllUserPlaylists(SpotifyTokens token)
{
// Checks if the accestoken has expired.
try
{
CheckToken(token);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:Checktoken failed. This is a known problem, logout and log back in to solve the problem.", ex.InnerException);
}
string endpoint = @"https://api.spotify.com/v1/users/" + token.Username + "/playlists";
ListOfPlaylists listOfPlaylists;
try
{
string text = await HttpRequest(token, endpoint);
listOfPlaylists = JsonConvert.DeserializeObject <ListOfPlaylists>(text);
listOfPlaylists.Items = listOfPlaylists.Items.Where(i => i.Tracks.Total < 20).ToList();
return(listOfPlaylists);
}
catch (HttpException ex)
{
throw new SpotifyException("SpotifyManager:GetAllUserPlaylists, HttpRequest failed.", ex.InnerException);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:GetAllUserPlaylists, failed to deserializeObject<ListOfPlaylists>", ex.InnerException);
}
}
public static async Task <Track> GetOneSong(SpotifyTokens token, string href)
{
try
{
CheckToken(token);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:Checktoken failed. This is a known problem, logout and log back in to solve the problem.", ex.InnerException);
}
string text;
try
{
text = await HttpRequest(token, href);
}
catch (Exception ex)
{
throw new HttpException("Communication with Spotify failed.", ex.InnerException);
}
try
{
Track newTrack = JsonConvert.DeserializeObject <Track>(text);
return(newTrack);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:GetOneSong, failed to deserializeObject<Track>", ex.InnerException);
}
}
public static async Task <string> GetOneAlbum(SpotifyTokens token, string albumHref)
{
var endpoint = ("https://api.spotify.com/v1/albums/" + albumHref);
string text;
try
{
CheckToken(token);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:Checktoken failed. This is a known problem, logout and log back in to solve the problem.", ex.InnerException);
}
try
{
text = await HttpRequest(token, endpoint);
}
catch (Exception ex)
{
throw new HttpException("Communication with Spotify failed.", ex.InnerException);
}
try
{
var def = new { release_date = "" };
var releasedate = JsonConvert.DeserializeAnonymousType(text, def);
return(releasedate.release_date);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:GetOneAlbum, failed to deserializeAnonymousType", ex.InnerException);
}
}
private static async Task <string> HttpRequest(SpotifyTokens token, string endpoint)
{
string text = "";
try
{
WebHeaderCollection headerCollection = new WebHeaderCollection();
headerCollection.Add("Accept-Encoding:gzip,deflate,compress");
headerCollection.Add("Authorization:Bearer " + token.AccessToken);
var request = WebRequest.CreateHttp(endpoint);
request.Host = "api.spotify.com";
request.Accept = "application/json";
request.ContentType = "application/json";
request.Headers = headerCollection;
var response = await request.GetResponseAsync();
// Get some ifs in here to check whether gzip or other encoding is used. Also, try-catch.
using (var stream = new StreamReader(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress)))
{
text = stream.ReadToEnd();
}
return(text);
}
catch (Exception ex)
{
throw new HttpException("Communication with Spotify failed.", ex.InnerException);
}
}
private static void CheckToken(SpotifyTokens token)
{
try
{
if (DateTime.Parse(token.Timestamp).AddSeconds(3540) < DateTime.Now)
{
// Builds a correct refresh request to post to spotify.
var endpoint = @"https://accounts.spotify.com/api/token";
string authHeader = "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(SpotifyClientId + ":" + SpotifyClientSecret));
var postData = "grant_type=refresh_token";
postData += "&refresh_token=" + token.RefreshToken;
var data = Encoding.ASCII.GetBytes(postData);
var request = WebRequest.CreateHttp(endpoint);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.Headers.Set("Authorization", authHeader);
request.ContentLength = data.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(data, 0, data.Length);
}
// Gets the response from Spotify.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode != HttpStatusCode.OK)
{
// Get some cool error handling in here.
}
// Reads the streams content into the responseBody variable.
var responseBody = "";
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
responseBody = reader.ReadToEnd();
}
// Sets the definition for an anon.object to use during deserialization.
var def = new { access_token = "" };
var newAccessToken = JsonConvert.DeserializeAnonymousType(responseBody, def);
// Sets the new token and timestamp. Discards the rest.
token.AccessToken = newAccessToken.access_token;
token.Timestamp = DateTime.Now.ToString();
}
}
catch (Exception ex)
{
throw new HttpException("SpotifyManager:CheckToken. TokenRefresh failed.", ex.InnerException);
}
}
public static string AddTracksToPlaylist(SpotifyTokens token, string newPlaylistId, string tracks)
{
var endpoint = @"https://api.spotify.com/v1/users/" + token.Username + "/playlists/" + newPlaylistId + "/tracks?uris=" + tracks;
string authHeader = "Authorization: Bearer " + token.AccessToken;
var request = WebRequest.CreateHttp(endpoint);
request.Method = "POST";
request.Headers.Set("Authorization", authHeader);
// Gets the response from Spotify.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode != HttpStatusCode.Created)
{
// Get some cool error handling in here.
}
var responseCode = response.StatusCode.ToString();
return(responseCode);
}
public static async Task <string> CreateNewPlaylistAsync(SpotifyTokens token, string playListName)
{
var endpoint = @"https://api.spotify.com/v1/users/" + token.Username + "/playlists";
string authHeader = "Authorization: Bearer " + token.AccessToken;
var postData = JsonConvert.SerializeObject(new { name = playListName, @public = false });
var data = Encoding.ASCII.GetBytes(postData);
var request = WebRequest.CreateHttp(endpoint);
request.Method = "POST";
request.ContentType = "application/json";
request.Headers.Set("Authorization", authHeader);
request.ContentLength = data.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(data, 0, data.Length);
}
// Gets the response from Spotify.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if ((response.StatusCode != HttpStatusCode.OK) || (response.StatusCode != HttpStatusCode.Created))
{
// Get some cool error handling in here.
}
// Reads the streams content into the responseBody variable.
var responseBody = "";
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
responseBody = reader.ReadToEnd();
}
var def = new { id = "" };
var playlistObject = JsonConvert.DeserializeAnonymousType(responseBody, def);
return(playlistObject.id);
}
private static async Task <ListOfAlbumInfo> GetAlbumInfo(SpotifyTokens token, ListOfSongs listOfSongs)
{
// Checks if the accestoken has expired.
try
{
CheckToken(token);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:Checktoken failed. This is a known problem, logout and log back in to solve the problem.", ex.InnerException);
}
StringBuilder endpoint = new StringBuilder();
endpoint.Append(@"https://api.spotify.com/v1/albums?ids=");
foreach (var item in listOfSongs.Items)
{
endpoint.Append(item.Track.Album.Href + ",");
}
endpoint.Remove(endpoint.Length - 1, 1);
try
{
string text = await HttpRequest(token, endpoint.ToString());
var albumInfo = JsonConvert.DeserializeObject <ListOfAlbumInfo>(text);
return(albumInfo);
}
catch (HttpException ex)
{
throw new SpotifyException("SpotifyManager: GetAlbumInfo, HttpRequest failed.", ex.InnerException);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:GetAlbumInfo - Failed to DeserializeObject<ListOfAlbumInfo>.", ex.InnerException);
}
}
public static async Task <ListOfSongs> GetAllSongsFromPlaylist(SpotifyTokens token, string spotifyRef)
{
// Checks if the accestoken has expired.
try
{
CheckToken(token);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:Checktoken failed. This is a known problem, logout and log back in to solve the problem.", ex.InnerException);
}
string endpoint = @"https://api.spotify.com/v1/users/" + token.Username + "/playlists/" + spotifyRef + "/tracks?fields=items(track(artists,name,href,preview_url,album(name,href)))";
ListOfSongs listOfSongs;
try
{
string text = await HttpRequest(token, endpoint);
listOfSongs = JsonConvert.DeserializeObject <ListOfSongs>(text);
var albumInfo = await GetAlbumInfo(token, listOfSongs);
listOfSongs.AlbumInfo = albumInfo;
return(listOfSongs);
}
catch (HttpException ex)
{
throw new SpotifyException("SpotifyManager: GetAllSongsFromPlaylist, HttpRequest failed.", ex.InnerException);
}
catch (Exception ex)
{
throw new SpotifyException("SpotifyManager:GetAllSongsFromPlaylist, failed to DeserializeObject<ListOfSongs>", ex.InnerException);
}
}
