//  TODO: MOVE THIS ALL TO PROMISES
var MSTREAMAPI = (function () {
  let mstreamModule = {};

  mstreamModule.listOfServers = [];
  mstreamModule.currentServer = {
    host:"",
    username:"",
    token: "",
    vPath: ""
  }

  $.ajaxPrefilter(function( options ) {
    options.beforeSend = function (xhr) {
      xhr.setRequestHeader('x-access-token', MSTREAMAPI.currentServer.token);
    }
  });


  // TODO: Special functions for handling multiple servers
    // Add Server
    // Delete Server
    // Select Server
    // Edit Server
    // Test Sever
    // Login server and save credentials



  function makeRequest(url, type, dataObject, callback){
    var request = $.ajax({
      url: url,
      type: type,
      contentType: "application/json",
      dataType: "json",
      data: JSON.stringify(dataObject)
    });

    request.done(function( response ) {
      callback(response, false);
    });

    // TODO: AHandle errors
    request.fail(function( jqXHR, textStatus ) {
      callback(textStatus, jqXHR);
    });
  }


  function makePOSTRequest(url, dataObject, callback){
    makeRequest(url, "POST", dataObject, callback);
  }

  function makeGETRequest(url, dataObject, callback){
    makeRequest(url, "GET", dataObject, callback);
  }



  mstreamModule.dirparser = function(directory, filetypes, callback){
    makePOSTRequest('/dirparser', {dir: directory}, callback);
  }

  mstreamModule.savePlaylist = function(title, songs, callback){
    makePOSTRequest('/playlist/save', { title: title, songs: songs }, callback);
  }

  mstreamModule.deletePlaylist = function(playlistname, callback){
    makePOSTRequest('/playlist/delete', {playlistname: playlistname}, callback);
  }

  mstreamModule.loadPlaylist = function(playlistname, callback){
    makePOSTRequest('/playlist/load', {playlistname: playlistname}, callback);
  }

  mstreamModule.getAllPlaylists = function(callback){
    makeGETRequest('/playlist/getall', false, callback);
  }

  mstreamModule.search = function(searchTerm, callback){
    makePOSTRequest('/db/search', {search: searchTerm}, callback);
  }

  mstreamModule.artists = function(callback){
    makeGETRequest('/db/artists', false, callback);
  }

  mstreamModule.albums = function(callback){
    makeGETRequest('/db/albums', false, callback);
  }

  mstreamModule.artistAlbums = function(artist, callback){
    makePOSTRequest("/db/artists-albums", {artist: artist}, callback);
  }

  mstreamModule.albumSongs = function(album, callback){
    makePOSTRequest("/db/album-songs", {album: album}, callback);
  }

  mstreamModule.dbStatus = function(callback){
    makeGETRequest("/db/status", false, callback);
  }

  mstreamModule.dbScan = function(callback){
    makeGETRequest("/db/recursive-scan", false, callback);
  }

  mstreamModule.makeShared = function(playlist, shareTimeInDays, callback){
    makePOSTRequest("/shared/make-shared", { time: shareTimeInDays, playlist: playlist}, callback);
  }


  mstreamModule.lookupMetadata = function(filepath, callback){
    makePOSTRequest("/db/metadata", {filepath: filepath}, callback);
  }



  // LOGIN
  mstreamModule.login = function(username, password, callback){
    makePOSTRequest("/login", { username: username, password: password}, callback);
  }
  mstreamModule.updateCurrentServer = function(username, token, vPath){
    mstreamModule.currentServer.user = username;
    mstreamModule.currentServer.token = token;
    mstreamModule.currentServer.vPath = vPath;
  }

  mstreamModule.ping = function(callback){
    makeGETRequest("/ping", false, callback);
  }




  // Special helper function
  MSTREAMPLAYER.addSongWizard = function(filepath, metadata, lookupMetadata){
    // Escape filepath
    var rawFilepath = filepath;
    filepath = filepath.replace("#", "%23");
    var url = mstreamModule.currentServer.host + filepath;

    if(mstreamModule.currentServer.vPath){
      url = mstreamModule.currentServer.vPath + '/' + url;
    }

    if(mstreamModule.currentServer.token){
      url = url + '?token=' + mstreamModule.currentServer.token;
    }

    var newSong = {
      url: url,
      filepath: filepath,
      metadata: metadata
    };

    MSTREAMPLAYER.addSong(newSong);

    // perform lookup
    if(lookupMetadata === true){
      mstreamModule.lookupMetadata(rawFilepath, function(response, error){
        if(error !== false || response.error || !response){
          return;
        }

        if(response.metadata){
          newSong.metadata = Object.create(response.metadata);
          MSTREAMPLAYER.resetCurrentMetadata();
        }
      });
    }
  }


  return mstreamModule;
}());