/**
 *	File: app/radio.js
 *	Author: Gerrit Linnemann
 *	
 *	Where the magic happens.
 */


// load the things we need
var exec = require('child_process').exec;


var App = null;
var Log = null
var Helper = null;
var Conf = null;


exports.init = function(Express, Configuration) {
	App = Express;
	Conf = Configuration;
	Log = App.get('Log');
	Helper = App.get('Helper');
	
	Log.debug('Radio: ' + exports.countChannels() + ' channels configured');
	Helper.each(Conf.channels, function(channel, isLast) {
  	//Log.inspect('Channel', channel);
  	Log.log('Radio: Found channel ' + channel.title);
	});
	
	return this;
}

exports.countChannels = function() {
  return Conf.channels.length;
}

exports.getChannels = function() {
  return Conf.channels;
}

exports.getChannel = function(idx) {
  if(Helper.isDefinedAndNotNull(Conf.channels[idx])) {
    return Conf.channels[idx];
  } else {
    return null;
  }
}

exports.play = function(idx) {
  var channel = Conf.channels[idx];
  if(channel !== undefined) {
    var stream2play = channel.stream;

    try {
      var parsers = require("playlist-parser");
      var M3U = parsers.M3U;

      var fs = require("fs");
      var playlist = M3U.parse(fs.readFileSync('/Users/gerrit/Downloads/swr3_m.m3u', { encoding: "utf8" }));
      Log.inspect('Radio: playlist', playlist);

      if(Helper.isDefinedAndNotNull(playlist[0])) {
        stream2play = playlist[0].file;
      }
    } catch(e) {
      Log.error(e);
    }


    var ls = exec(
      'mplayer -slave -quiet ' + stream2play,
      function (error, stdout, stderr) {
        Log.log('Radio: stdout: ' + stdout);
        Log.log('Radio: stderr: ' + stderr);
        if (error !== null) {
          Log.error('Radio: exec error: ' + error);
        }
      }
    );
    
    setTimeout(function() { exec('echo "pause"', function(error, stdout, stderr) {}); }, 4000);

    ls.on('exit', function (code){
      Log.log('Radio: Child process exited with exit code ' + code);
    });
  } else {
    Log.error('Radio: No channel defined!');
  }
}