158 lines
3.3 KiB
JavaScript
158 lines
3.3 KiB
JavaScript
"use strict";
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const config = require('./config.json')
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const glob = require('glob');
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const views = require('./jukebox/views')(__dirname + '/templates/');
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const express = require('express');
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const morgan = require('morgan')
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const winston = require('winston');
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var logger = new (winston.Logger)({
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transports: [
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new (winston.transports.Console)()
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]
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});
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logger.level = config.debug ? 'debug' : 'info';
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const MediaPlayer = require('./jukebox/media-player')(config, logger);
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const TagReader = require('./jukebox/tag-reader')(config, logger);
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var app = express();
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var server = require('http').createServer();
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const WebSocket = require('ws');
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const WebSocketServer = WebSocket.Server;
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var wss = new WebSocketServer({server: server});
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var play_log = [];
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function exitHandler(options, err) {
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logger.debug('closing child tasks');
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if (err) logger.debug(err.stack);
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TagReader.kill();
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MediaPlayer.kill();
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if (options.exit) {
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process.exit();
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}
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};
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process.on('exit', exitHandler.bind(null));
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process.on('SIGINT', exitHandler.bind(null, {exit:true}));
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TagReader.on('message', data => {
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processLine(data);
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});
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if (config.debug) {
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MediaPlayer.on('message', line => {
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logger.debug("mediaplayer sent message", { line: line });
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});
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}
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var last_tag = null;
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var debounce_until = 0;
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function lookup(tag, cb) {
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if (tag === config.stop_id) {
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return cb('STOP');
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}
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if (tag === config.pause_id) {
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return cb('PAUSE', 2);
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}
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glob('media/' + tag + ' - *.mp3', (er, files) => {
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if (files.length > 0) {
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appendLog(files[0]);
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return cb("LOAD " + files[0], 5);
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}
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appendLog(tag);
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});
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}
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function appendLog(message) {
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if (play_log.length > 10) {
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play_log.pop();
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}
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play_log.unshift(message);
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var data = {
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html: views.log.render({ play_log: play_log }),
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tag: last_tag
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};
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wss.broadcast(JSON.stringify(data));
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}
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function processLine(data) {
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if (Date.now() / 1000 < debounce_until) {
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return;
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}
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last_tag = String(data).trim();
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logger.debug("got tag from tag reader", { tag: last_tag });
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// min 1 sec debounce
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debounce_until = Date.now() / 1000 + 1;
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lookup(last_tag, function(action, wait_sec) {
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wait_sec = wait_sec || 1;
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debounce_until = Date.now() / 1000 + wait_sec;
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if (action) {
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logger.info("sending action to media player", { action: action, tag: last_tag });
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MediaPlayer.send(action + "\n");
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}
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});
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}
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app.use(morgan('dev'))
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app.use(express.static(__dirname + '/static'))
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app.get('/', function (req, res, next) {
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try {
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var index = views.index.render({
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last_tag: last_tag
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, config: config
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, play_log: play_log
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});
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var html = views.base.render({
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title: 'Home'
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, content: index
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})
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res.send(html)
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} catch (e) {
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next(e)
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}
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});
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wss.broadcast = function broadcast(data) {
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wss.clients.forEach(function each(client) {
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if (client.readyState === WebSocket.OPEN) {
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client.send(data);
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}
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});
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};
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wss.on('connection', function (ws) {
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logger.info('websocket client connected');
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ws.on('close', function () {
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logger.info('websocket client disconnected');
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});
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});
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server.on('request', app);
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server.listen(config.port, function () {
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logger.info('express listening on http://localhost:' + config.port)
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})
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// vim:ts=2 sw=2 et:
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