let events = {};
export default {
  on (name, self, cb) {
    let cbArr = events[name];
    if (Array.isArray(cbArr)) {
      cbArr.push({self, cb})
    } else {
      events[name] = [{self, cb}]
    }
  },
  remove (name, self) {
    let cbArr = events[name];
    if (Array.isArray(cbArr)) {
      events[name] = cbArr.filter(({target, cb}) => {
        return target !== self
      })
    }
  },
  emit (name, data) {
    let cbArr = events[name];
    if (Array.isArray(cbArr)) {
      cbArr.map(({target, cb}) => {
        cb.call(target, data)
      })
    }
  },
  events: {
     BUY_GAME_SUCCESS: 'buy-game-success',
     LOGIN_FINISHED : 'login-finished',
     UPDATE_RECENT_GAMES: 'update-recent-games',
     UPDATE_GAME_STATUS: 'update-game-status',
     NEED_UPDATE_SCORE: 'need-update-score'
  }
}