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main.js
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main.js
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import { setMetadata, streamID, playlistID, getSaved, save, params } from './lib/functions.js';
import { bitrateSelector, audio, inputUrl, playButton, queueButton, queueNextButton, loopButton, relatedStreamsContainer, subtitleContainer } from './lib/DOM.js';
const api = await fetch("https://piped-instances.kavin.rocks").then(res => res.json()).then(data => data.map(e => e.api_url)).catch(e => 'https://pipedapi.kavin.rocks');
const queueArray = [];
let queueCount = 0;
let queue = false;
let queueNow = 1;
let previous_ID;
const play = (id, instance = 0) => {
fetch(api[instance] + '/streams/' + id)
.then(res => res.json())
.then(data => {
setMetadata(
data.thumbnailUrl,
id,
data.title,
data.uploader,
data.uploaderUrl
);
if (data.audioStreams.length === 0) {
alert('NO AUDIO STREAMS AVAILABLE.');
return;
}
// extracting opus streams and storing m4a streams
let bitrates = [];
let urls = [];
bitrateSelector.innerHTML = '';
const m4aBitrates = [];
const m4aUrls = [];
const m4aOptions = [];
for (const value of data.audioStreams) {
if (Object.values(value).includes('opus')) {
bitrates.push(parseInt(value.quality));
urls.push(value.url);
bitrateSelector.add(new Option(value.quality, value.url));
} else {
m4aBitrates.push(parseInt(value.quality));
m4aUrls.push(value.url);
m4aOptions.push(new Option(value.quality, value.url));
}
}
// finding lowest available stream when low opus bitrate unavailable
if (!getSaved('quality') && Math.min(...bitrates) > 64) {
m4aOptions.map(opts => bitrateSelector.add(opts));
bitrates = bitrates.concat(m4aBitrates);
urls = urls.concat(m4aUrls);
}
const index = getSaved('quality') ?
bitrates.indexOf(Math.max(...bitrates)) :
bitrates.indexOf(Math.min(...bitrates));
audio.src = urls[index];
if (data.subtitles.length) {
subtitleButton.disabled = false;
audio.firstElementChild.src = data.subtitles[0].url;
} else {
subtitleButton.disabled = true;
}
audio.dataset.seconds = 0;
bitrateSelector.selectedIndex = index;
playButton.classList.replace(playButton.classList[0], 'spinner');
// setting related streams
relatedStreamsContainer.innerHTML = '';
for (const stream of data.relatedStreams) {
const listItem = document.createElement('list-item');
listItem.textContent = stream.title;
listItem.dataset.author = stream.uploaderName;
listItem.addEventListener('click', () => {
queue ?
queueIt(stream.url.slice(9)) :
play(stream.url.slice(9));
});
listItem.dataset.thumbnail = stream.thumbnail;
relatedStreamsContainer.appendChild(listItem);
}
params.set('s', id);
history.pushState({}, '', '?' + params);
})
.catch(err => {
if (instance < api.length - 1) {
play(id, instance + 1);
return;
}
alert(err);
});
}
// next track
const next = () => {
if ((queueCount - queueNow) < 0) return;
play(queueArray[queueNow]);
queueButton.firstElementChild.dataset.badge = queueCount - queueNow;
queueNow++;
}
// link queuing algorithm
const queueIt = id => {
queueCount++;
queueButton.firstElementChild.dataset.badge = queueCount - queueNow + 1;
queueArray[queueCount] = previous_ID = id;
}
// playback on end strategy
audio.addEventListener('ended', () => {
if (queue) {
next();
} else {
playButton.classList.replace('ri-play-fill', 'ri-stop-fill');
playButton.dataset.state = '1'
}
})
// queue functions and toggle
const queueFx = () => {
queue = !queue;
queue ?
queueCount = 0 :
queueButton.firstElementChild.dataset.badge = 0;
queueNextButton.classList.toggle('hide');
queueButton.firstElementChild.classList.toggle('on');
loopButton.classList.toggle('hide');
loopButton.firstElementChild.classList.remove('on');
audio.loop = false;
}
queueButton.addEventListener('click', queueFx);
queueNextButton.addEventListener('click', next);
const playlistLoad = (id, instance = 0) => {
fetch(api[instance] + '/playlists/' + id)
.then(res => res.json())
.then(data => {
queueFx();
setMetadata(
data.thumbnailUrl,
id,
data.name,
'Click on Next Button to start',
'');
for (const i of data.relatedStreams)
queueIt(i.url.slice(9));
params.set('p', id);
history.pushState({}, '', '?' + params);
})
.catch(err => {
if (instance < api.length - 1) {
playlistLoad(id, instance + 1);
return;
}
alert(err);
});
}
// link validator
const validator = (val) => {
const pID = playlistID(val);
const sID = streamID(val);
if (sID)
queue ? queueIt(sID) : play(sID);
else if (pID)
queue ? queueIt(pID) : playlistLoad(pID);
// so that it does not run again for the same link
previous_ID = pID || sID;
}
// input text player
inputUrl.addEventListener('input', () => {
if (!inputUrl.value.includes(previous_ID))
validator(inputUrl.value);
});
// URL params
if (params.get('s')) // stream
validator('https://youtube.com/watch?v=' + params.get('s'));
if (params.get('p')) { // playlist
validator('https://youtube.com/playlist?list=' + params.get('p'));
params.delete('p'); // stop param from interferring rest of the program
}
if (params.get('t')) { // timestamp
audio.currentTime = params.get('t');
params.delete('t');
}
// PWA Params
if (params.get('url')) {
validator(params.get('url'));
params.delete('url');
audio.play();
} else if (params.get('text')) {
validator(params.get('text'));
params.delete('text');
audio.play();
}