Esempio n. 1
0
        static void RunProgram()
        {
#if DEBUG
            if (Log.IsInfoEnabled)
            {
                Log.Info("Started.");
            }
#endif

            // Get the configuration from the Playdar etc folder.
            string etc = Environment.GetEnvironmentVariable("PLAYDAR_ETC");
#if DEBUG
            if (Log.IsDebugEnabled)
            {
                Log.Debug("PLAYDAR_ETC=\"" + etc + "\"");
            }
#endif
            if (string.IsNullOrEmpty(etc))
            {
                etc = "etc";
            }

            string configFilename = etc + "/spotify.conf";

            if (!File.Exists(configFilename))
            {
#if DEBUG
                if (Log.IsErrorEnabled)
                {
                    Log.Error("Spotify configuration file not found!");
                }
#endif
                return;
            }

            SimplePropertiesFile config = new SimplePropertiesFile(configFilename);
            string username;
            string password;
            try
            {
                username = config.Sections["spotify"]["username"];
                password = config.Sections["spotify"]["password"];
            }
            catch (Exception)
            {
#if DEBUG
                if (Log.IsErrorEnabled)
                {
                    Log.Error("Couldn't get username or password from config file!");
                }
#endif
                return;
            }

            // Login to Spotify.
            Spotify spotify = new Spotify();
            bool    loginOk = spotify.Login(username, password);
            if (loginOk)
            {
                // Create a lookup table for Spotify links and UUIDs.
                SpotifyLinkLookup spotifyLinkLookup = new SpotifyLinkLookup();

                // Create an HTTP server for streaming mp3.
                HttpStreamingServer streamServer = new HttpStreamingServer(spotify, spotifyLinkLookup);
                streamServer.Start();

                // Return resolver info.
                SendJsonOutput(SpotifyResolverInfo);

                // Read JSON queries.
                Stream input = Console.OpenStandardInput();
                do
                {
                    string json = JsonMsgUtil.ExtractJsonInput(input);
                    if (String.IsNullOrEmpty(json) || json == "{}")
                    {
#if DEBUG
                        if (Log.IsInfoEnabled)
                        {
                            Log.Info("Empty message received. Leaving message receive loop.");
                        }
#endif
                        break;
                    }

#if DEBUG
                    if (Log.IsDebugEnabled)
                    {
                        Log.Debug(json);
                    }
#endif

                    JObject o       = JObject.Parse(json);
                    string  msgtype = (string)o["_msgtype"];
                    if (String.IsNullOrEmpty(msgtype))
                    {
#if DEBUG
                        if (Log.IsWarnEnabled)
                        {
                            Log.Warn("No message type provided. Leaving receive loop.");
                        }
#endif
                        break;
                    }
                    else if (msgtype != "rq")
                    {
#if DEBUG
                        if (Log.IsWarnEnabled)
                        {
                            Log.Warn("Unexpected JSON _msgtype! " + msgtype);
                        }
#endif
                        break;
                    }

#if DEBUG
                    if (Log.IsDebugEnabled)
                    {
                        Log.Debug("Performing search...");
                    }
#endif

                    // Perform search.
                    string       artist        = (string)o["artist"];
                    string       track         = (string)o["track"];
                    string       album         = (string)o["album"];
                    List <Track> searchResults = spotify.Search(artist, track, album);

#if DEBUG
                    if (Log.IsDebugEnabled)
                    {
                        Log.Debug("searchResults.Count = " + searchResults.Count);
                    }
#endif

                    // Build JSON results.
                    StringBuilder  jsonBuild  = new StringBuilder();
                    JsonTextWriter jsonWriter = new JsonTextWriter(new StringWriter(jsonBuild));
                    jsonWriter.WriteStartObject();
                    WriteProperty(jsonWriter, "_msgtype", "results");
                    WriteProperty(jsonWriter, "qid", (string)o["qid"]);
                    jsonWriter.WritePropertyName("results");
                    jsonWriter.WriteStartArray();
                    int i = 0;
                    foreach (Track r in searchResults)
                    {
                        // Limit number of possible results.
                        if (++i > MaxResults)
                        {
#if DEBUG
                            if (Log.IsWarnEnabled)
                            {
                                Log.Warn("Only returning first " + MaxResults +
                                         " of " + searchResults.Count + " results.");
                            }
#endif

                            break;
                        }

                        // Obtain a GUID for the stream request.
                        string sid = spotifyLinkLookup.NewGuid(r.LinkString);

                        // Build a URL for the track to be delivered.
                        StringBuilder urlBuild = new StringBuilder();
                        urlBuild.Append(streamServer.BaseUrl).Append(sid);
                        string url = urlBuild.ToString();
#if DEBUG
                        if (Log.IsDebugEnabled)
                        {
                            Log.Debug("Stream URL = " + url);
                        }
#endif

                        // Work out the content length.
#if DEBUG
                        if (Log.IsDebugEnabled)
                        {
                            Log.Debug("Duration: " + r.Duration);
                        }
#endif
                        int seconds = r.Duration / 1000;

                        // Add track result to JSON response.
                        jsonWriter.WriteStartObject();
                        WriteProperty(jsonWriter, "artist", r.Artists[0].Name);
                        WriteProperty(jsonWriter, "track", r.Name);
                        WriteProperty(jsonWriter, "album", r.Album.Name);
                        WriteProperty(jsonWriter, "mimetype", "audio/mpeg");
                        WriteProperty(jsonWriter, "source", "Spotify");
                        WriteProperty(jsonWriter, "url", url);
                        WriteProperty(jsonWriter, "duration", seconds);
                        WriteProperty(jsonWriter, "score", CalculateScore(r, artist, track, album));
                        WriteProperty(jsonWriter, "bitrate", LameProgram.BitRate);
                        jsonWriter.WriteEndObject();
                    }
                    jsonWriter.WriteEnd();
                    jsonWriter.WriteEndObject();

                    // Send the JSON response to search query.
                    SendJsonOutput(jsonBuild.ToString());
                } while (true);

                // Tidy up after stream server.
                streamServer.Shutdown();

                // Logout of Spotify.
                spotify.Logout();
            }
        }
Esempio n. 2
0
        static void RunProgram()
        {
            #if DEBUG
            if (Log.IsInfoEnabled) Log.Info("Started.");
            #endif

            // Get the configuration from the Playdar etc folder.
            string etc = Environment.GetEnvironmentVariable("PLAYDAR_ETC");
            #if DEBUG
            if (Log.IsDebugEnabled)
                Log.Debug("PLAYDAR_ETC=\"" + etc + "\"");
            #endif
            if (string.IsNullOrEmpty(etc))
                etc = "etc";

            string configFilename = etc + "/spotify.conf";

            if (!File.Exists(configFilename))
            {
            #if DEBUG
                if (Log.IsErrorEnabled)
                    Log.Error("Spotify configuration file not found!");
            #endif
                return;
            }

            SimplePropertiesFile config = new SimplePropertiesFile(configFilename);
            string username;
            string password;
            try
            {
                username = config.Sections["spotify"]["username"];
                password = config.Sections["spotify"]["password"];
            }
            catch (Exception)
            {
            #if DEBUG
                if (Log.IsErrorEnabled)
                    Log.Error("Couldn't get username or password from config file!");
            #endif
                return;
            }

            // Login to Spotify.
            Spotify spotify = new Spotify();
            bool loginOk = spotify.Login(username, password);
            if (loginOk)
            {

                // Create a lookup table for Spotify links and UUIDs.
                SpotifyLinkLookup spotifyLinkLookup = new SpotifyLinkLookup();

                // Create an HTTP server for streaming mp3.
                HttpStreamingServer streamServer = new HttpStreamingServer(spotify, spotifyLinkLookup);
                streamServer.Start();

                // Return resolver info.
                SendJsonOutput(SpotifyResolverInfo);

                // Read JSON queries.
                Stream input = Console.OpenStandardInput();
                do
                {
                    string json = JsonMsgUtil.ExtractJsonInput(input);
                    if (String.IsNullOrEmpty(json) || json == "{}")
                    {
            #if DEBUG
                        if (Log.IsInfoEnabled)
                            Log.Info("Empty message received. Leaving message receive loop.");
            #endif
                        break;
                    }

            #if DEBUG
                    if (Log.IsDebugEnabled)
                        Log.Debug(json);
            #endif

                    JObject o = JObject.Parse(json);
                    string msgtype = (string)o["_msgtype"];
                    if (String.IsNullOrEmpty(msgtype))
                    {
            #if DEBUG
                        if (Log.IsWarnEnabled)
                            Log.Warn("No message type provided. Leaving receive loop.");
            #endif
                        break;
                    }
                    else if (msgtype != "rq")
                    {
            #if DEBUG
                        if (Log.IsWarnEnabled)
                            Log.Warn("Unexpected JSON _msgtype! " + msgtype);
            #endif
                        break;
                    }

            #if DEBUG
                    if (Log.IsDebugEnabled)
                        Log.Debug("Performing search...");
            #endif

                    // Perform search.
                    string artist = (string)o["artist"];
                    string track = (string)o["track"];
                    string album = (string)o["album"];
                    List<Track> searchResults = spotify.Search(artist, track, album);

            #if DEBUG
                    if (Log.IsDebugEnabled)
                        Log.Debug("searchResults.Count = " + searchResults.Count);
            #endif

                    // Build JSON results.
                    StringBuilder jsonBuild = new StringBuilder();
                    JsonTextWriter jsonWriter = new JsonTextWriter(new StringWriter(jsonBuild));
                    jsonWriter.WriteStartObject();
                    WriteProperty(jsonWriter, "_msgtype", "results");
                    WriteProperty(jsonWriter, "qid", (string)o["qid"]);
                    jsonWriter.WritePropertyName("results");
                    jsonWriter.WriteStartArray();
                    int i = 0;
                    foreach (Track r in searchResults)
                    {
                        // Limit number of possible results.
                        if (++i > MaxResults)
                        {
            #if DEBUG
                            if (Log.IsWarnEnabled)
                                Log.Warn("Only returning first " + MaxResults +
                                    " of " + searchResults.Count + " results.");
            #endif

                            break;
                        }

                        // Obtain a GUID for the stream request.
                        string sid = spotifyLinkLookup.NewGuid(r.LinkString);

                        // Build a URL for the track to be delivered.
                        StringBuilder urlBuild = new StringBuilder();
                        urlBuild.Append(streamServer.BaseUrl).Append(sid);
                        string url = urlBuild.ToString();
            #if DEBUG
                        if (Log.IsDebugEnabled)
                            Log.Debug("Stream URL = " + url);
            #endif

                        // Work out the content length.
            #if DEBUG
                        if (Log.IsDebugEnabled) Log.Debug("Duration: " + r.Duration);
            #endif
                        int seconds = r.Duration / 1000;

                        // Add track result to JSON response.
                        jsonWriter.WriteStartObject();
                        WriteProperty(jsonWriter, "artist", r.Artists[0].Name);
                        WriteProperty(jsonWriter, "track", r.Name);
                        WriteProperty(jsonWriter, "album", r.Album.Name);
                        WriteProperty(jsonWriter, "mimetype", "audio/mpeg");
                        WriteProperty(jsonWriter, "source", "Spotify");
                        WriteProperty(jsonWriter, "url", url);
                        WriteProperty(jsonWriter, "duration", seconds);
                        WriteProperty(jsonWriter, "score", CalculateScore(r, artist, track, album));
                        WriteProperty(jsonWriter, "bitrate", LameProgram.BitRate);
                        jsonWriter.WriteEndObject();
                    }
                    jsonWriter.WriteEnd();
                    jsonWriter.WriteEndObject();

                    // Send the JSON response to search query.
                    SendJsonOutput(jsonBuild.ToString());

                } while (true);

                // Tidy up after stream server.
                streamServer.Shutdown();

                // Logout of Spotify.
                spotify.Logout();

            }
        }