pi-rfid-jukebox/jukebox/library/play-log.js

47 lines
796 B
JavaScript

"use strict";
const EventEmitter = require('events').EventEmitter;
const tags = require('./tags');
module.exports.PlayLog = class PlayLog extends EventEmitter {
constructor() {
super();
this.last_tag = undefined;
this.log = [];
this.log_size = 10;
}
updateLog(tag) {
this.last_tag = tag;
// early exit for NotFoundTag, these don't show
// up in the play history
if (tag instanceof tags.NotFoundTag) {
this.emit('update', tag);
return;
}
this.log.unshift(tag);
if (this.log.length > this.log_size) {
this.log.pop();
}
this.emit('update', tag);
}
getLastTag() {
if (this.log.length == 0) {
return;
}
return this.log[0].tag;
}
getLog() {
return this.log;
}
}
// vim:ts=2 sw=2 et: