| 1 | 'use strict'; |
| 2 | var TYPES = { |
| 3 | "FLAC": "audio/x-flac", |
| 4 | "Vorbis": "audio/ogg", |
| 5 | "AAC": "audio/aac", |
| 6 | "MP3": "audio/mpeg" |
| 7 | }; |
| 8 | |
| 9 | var audio, details, start, prev, data; |
| 10 | var hash_to_id = {}, inhibit_handle_hash = false; |
| 11 | var hist = [] |
| 12 | |
| 13 | function load_song (id) { |
| 14 | audio.style.display = "inline"; |
| 15 | var song = data[id]; |
| 16 | var old_sources = document.getElementsByTagName("source"); |
| 17 | while(old_sources.length) |
| 18 | old_sources[0].parentNode.removeChild(old_sources[0]); |
| 19 | |
| 20 | for (var i = 0 ; i < song.formats.length ; i++){ |
| 21 | var source = document.createElement("source"); |
| 22 | var type = TYPES[song.formats[i].format]; |
| 23 | source.setAttribute("type", type); |
| 24 | source.setAttribute("src", song.formats[i].file); |
| 25 | audio.appendChild(source); |
| 26 | } |
| 27 | |
| 28 | details.innerHTML = "Now playing: " + song.artist + " - " + song.title; |
| 29 | inhibit_handle_hash = true; |
| 30 | location.hash = song.hash; |
| 31 | inhibit_handle_hash = false; |
| 32 | audio.load(); |
| 33 | } |
| 34 | |
| 35 | function play_random () { |
| 36 | start.innerHTML = "Next"; |
| 37 | var id = Math.floor(Math.random() * data.length); |
| 38 | hist.push(id); |
| 39 | if(hist.length > 1) |
| 40 | prev.disabled = false; |
| 41 | load_song(id); |
| 42 | audio.play(); |
| 43 | } |
| 44 | |
| 45 | function play_random_after_error () { |
| 46 | hist.pop(); /* Purge offending song from history */ |
| 47 | play_random(); |
| 48 | } |
| 49 | |
| 50 | function play_prev () { |
| 51 | hist.pop(); |
| 52 | var song = hist[hist.length - 1]; |
| 53 | console.log("Will now play: " + song) |
| 54 | if(hist.length <= 1) |
| 55 | prev.disabled = true; |
| 56 | load_song(song); |
| 57 | audio.play(); |
| 58 | } |
| 59 | |
| 60 | function handle_hash(first_run){ |
| 61 | if(!hash_to_id.hasOwnProperty(location.hash) || inhibit_handle_hash) |
| 62 | return; |
| 63 | var id = hash_to_id[location.hash] |
| 64 | if(first_run === true) |
| 65 | hist.push(id) |
| 66 | load_song(id); |
| 67 | start.innerHTML = "Next"; |
| 68 | audio.play(); |
| 69 | } |
| 70 | |
| 71 | window.onload = function () { |
| 72 | var container = document.getElementById("player"); |
| 73 | container.innerHTML = '<div id="details"></div> <button id="prev_player">Previous</button><button id="start_player">Play a random song</button> (or click a song title)<br><audio id="audio" controls></audio>'; |
| 74 | audio = document.getElementById("audio"); |
| 75 | details = document.getElementById("details"); |
| 76 | start = document.getElementById("start_player"); |
| 77 | prev = document.getElementById("prev_player") |
| 78 | prev.disabled = true; |
| 79 | |
| 80 | data = []; |
| 81 | var trs = document.querySelectorAll("tbody tr"); |
| 82 | for (var i = 0 ; i < trs.length ; i++) { |
| 83 | var tr = trs[i]; |
| 84 | var song = { |
| 85 | "artist": tr.getElementsByClassName("artist")[0].textContent, |
| 86 | "title": tr.getElementsByClassName("title")[0].textContent, |
| 87 | "hash": tr.getElementsByTagName("a")[0].dataset.hash, |
| 88 | "formats": [] |
| 89 | }; |
| 90 | var formats = tr.getElementsByClassName("formats")[0].getElementsByTagName("a"); |
| 91 | for (var j = 0 ; j < formats.length ; j++) { |
| 92 | var format = formats[j]; |
| 93 | song.formats.push({ |
| 94 | "format": format.textContent, |
| 95 | "file": format.getAttribute("href") |
| 96 | }); |
| 97 | } |
| 98 | data.push(song); |
| 99 | hash_to_id[song.hash] = i; |
| 100 | } |
| 101 | |
| 102 | audio.style.display = "none"; |
| 103 | audio.addEventListener('ended', play_random); |
| 104 | audio.addEventListener('error', play_random_after_error); |
| 105 | start.addEventListener('click', play_random); |
| 106 | prev.addEventListener('click', play_prev); |
| 107 | window.onhashchange = handle_hash; |
| 108 | handle_hash(true); |
| 109 | }; |