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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>WRMS</title>
<style>
.vote {
display: inline-block;
cursor: pointer;
color: #687074
}
.vote.on {
color: #f48024
}
</style>
<script>
/*
@licstart The following is the entire license notice for the
JavaScript code in this page.
Copyright (C) 2022 Florian Fischer
The JavaScript code in this page is free software: you can
redistribute it and/or modify it under the terms of the GNU
General Public License (GNU GPL) as published by the Free Software
Foundation, either version 3 of the License, or (at your option)
any later version. The code is distributed WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
As additional permission under GNU GPL version 3 section 7, you
may distribute non-source (e.g., minimized or compacted) forms of
that code without the copy of the GNU GPL normally required by
section 4, provided you include this license notice and a URL
through which recipients can access the Corresponding Source.
@licend The above is the entire license notice
for the JavaScript code in this page.
*/
</script>
<script>
var HttpClient = function() {
this.get = function(url, callback) {
var request = new XMLHttpRequest();
request.onreadystatechange = function() {
if (request.readyState == 4 && request.status == 200)
callback(request.responseText);
}
request.open("GET", url, true);
request.send(null);
}
}
let songs = [];
let playing = {};
let votes = new Map();
function renderPlaylist() {
playlist = document.getElementById("playlist");
playlist.innerHTML = "";
songs.sort(function(a, b) {return b.weight - a.weight});
for (const song of songs) {
var listItem = document.createElement("li");
const btnHTML = "<svg width='36' height='36'><path d='M2 10h32L18 26 2 10z' fill='currentColor'></path></svg>";
var upvoteBtn = document.createElement("span");
var downvoteBtn = document.createElement("span");
upvoteBtn.innerHTML = downvoteBtn.innerHTML = btnHTML;
upvoteBtn.className = downvoteBtn.className = "vote";
upvoteBtn.style.transform = 'rotate(180deg)';
if (votes.has(song.id)) {
if (votes.get(song.id) == "up")
upvoteBtn.classList.toggle("on");
else
downvoteBtn.classList.toggle("on");
}
function onVote(event) {
const btn = event.currentTarget;
btn.classList.toggle("on");
const isUpvoteBtn = btn == upvoteBtn;
const isVote = btn.classList.contains("on");
var url = "";
if (isVote) {
if (isUpvoteBtn) {
downvoteBtn.classList.remove("on")
votes.set(song.id, "up")
} else {
upvoteBtn.classList.remove("on")
votes.set(song.id, "down")
}
url = "/" + (isUpvoteBtn ? "up" : "down") + "?song=" + song.id;
} else {
votes.delete(song.id);
url = "/unvote?song=" + song.id;
}
console.log("Get " + url);
new HttpClient().get(url, console.log);
}
upvoteBtn.addEventListener("click", onVote);
downvoteBtn.addEventListener("click", onVote);
listItem.appendChild(upvoteBtn);
listItem.appendChild(downvoteBtn);
const itemValue = document.createTextNode(song.artist + " - " + song.title);
listItem.appendChild(itemValue);
playlist.appendChild(listItem);
}
}
function handleAdd(added) {
songs = songs.concat(added);
renderPlaylist();
}
function handleUpdate(updated) {
for (const updated_song of updated) {
songs[songs.findIndex(function(s) {return s.id == updated_song.id})] = updated_song;
}
renderPlaylist();
}
function handlePause() {
document.getElementById("ppbutton").innerHTML = 'Play';
}
function handlePlay(currentSong) {
document.getElementById("ppbutton").innerHTML = 'Pause';
idx = -1;
songs.forEach(function(s, i, a) { if (s.id == currentSong.id) idx = i; });
if (idx != -1) {
songs.splice(idx, 1);
renderPlaylist();
}
const songLabel = document.createTextNode(currentSong.artist + " - " + currentSong.title);
playing = document.getElementById("playing");
playing.innerHTML = "";
playing.appendChild(songLabel);
}
let socket = new WebSocket("ws://localhost:8080/ws");
console.log("Attempting Connection...");
socket.onopen = () => {
console.log("Successfully Connected");
};
socket.onclose = event => {
console.log("Socket Closed Connection: ", event);
};
socket.onmessage = message => {
console.log("Socket Received Message: ", message);
const cmd = JSON.parse(message.data);
switch (cmd.cmd) {
case "add":
handleAdd(cmd.songs)
break;
case "update":
handleUpdate(cmd.songs)
break;
case "pause":
handlePause()
break;
case "play":
handlePlay(cmd.songs[0])
break;
}
};
socket.onerror = error => {
console.log("Socket Error: ", error);
};
window.onload = function() {
document.getElementById("ppbutton").addEventListener("click", function() {
new HttpClient().get("/playpause", console.log);
});
}
</script>
</head>
<body>
<h2>Playing</h2>
<p id='playing'></p>
<div id='controls'>
<button id="ppbutton" form='ppform'>Play</button>
</div>
<h2>Playlist</h2>
<ul id='playlist'></ul>
</body>
</html>
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