add player module

lib/player.js

@@ -0,0 +1,161 @@
+'use strict';
+
+const Mplayer = require('mplayer'),
+      chalk = require('chalk'),
+      log = require('npmlog'),
+      EventEmitter = require('events');
+
+const resetLine  = function() {
+  process.stdout.clearLine();
+  process.stdout.cursorTo(0)
+};
+
+class Player extends EventEmitter {
+
+  constructor() {
+    super();
+
+    log.addLevel('playing', 2001, {bg: 'black', fg: 'green'}, '[playing]');
+    log.addLevel('skipped', 2002, {bg: 'black', fg: 'red'}, '[skipped]');
+    log.addLevel('finished', 2003, {bg: 'black', fg: 'red'}, '[finished]');
+    log.addLevel('volume', 2004, {bg: 'black', fg: 'red'}, '[volume]');
+    log.addLevel('interesting', 2005, {bg: 'black', fg: 'red'}, '[interesting]');
+
+    this.story = null;
+    this.volume = 100;
+    this.time = 0;
+    this.playing = false;
+
+    this.player = new Mplayer();
+    this.player.on('stop', this.done.bind(this));
+    this.player.on('time', (time) => this.time = time);
+    this.player.on('error', console.error);
+
+  }
+
+  load(story) {
+    this.story = story;
+    return this.play();
+  }
+
+  play() {
+
+    if(! this.story) return;
+
+    this.story.start().then((file) => {
+
+      this.player.openFile(file);
+
+      resetLine();
+      log.playing(this.story.title);
+
+      this.player.play();
+      this.time = 0;
+      this.playing = true;
+
+    });
+
+  }
+
+  increaseVolume() {
+
+    if(! this.player) return;
+
+    this.volume += 10;
+
+    if(this.volume > 100)
+      this.volume = 100;
+
+    this.player.volume(this.volume);
+
+    resetLine();
+    log.volume(this.volume);
+
+  }
+
+  decreaseVolume() {
+
+    if(! this.player)
+      return;
+
+    this.volume -= 10;
+
+    if(this.volume < 10) 
+      this.volume = 10;
+
+    this.player.volume(this.volume);
+
+    resetLine();
+    log.volume(this.volume);
+
+  }
+
+  pause() {
+
+    if(! this.player) return;
+
+    if(this.playing) {
+      this.player.pause();
+      this.playing = false;
+    } else {
+      this.player.play();
+      this.playing = true;
+    }
+
+  }
+
+  rewind() {
+
+    if(! this.player) return;
+
+    if(this.time < 15)
+      this.time = 15;
+
+    this.player.seek(this.time-15);
+
+  }
+
+  skip() {
+
+    if(! this.player) return;
+    if(! this.story) return;
+    if(! this.story.canSkip) return;
+
+    resetLine();
+    log.skipped(this.story.title);
+
+    this.story.next(this.time);
+    this.player.stop();
+
+  }
+
+  interesting() {
+
+    if(! this.player) return;
+    if(! this.story) return;
+    if(this.story.interesting) return;
+
+    resetLine();
+    log.interesting(this.story.title);
+
+    this.story.markInteresting(this.time);
+
+  }
+
+  done() {
+
+    if(! this.story.skipped) {
+      resetLine();
+      log.finished(this.story.title);
+    }
+
+    this.story.finished();
+    this.time = 0;
+    this.playing = false;
+    this.play();
+
+  }
+
+}
+
+exports = module.exports = Player;