Give better clues for reusing of existing releases/recordings in new release
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// ==UserScript==
// @name MB Release Seeding Helper
// @namespace https://greasyfork.org/users/321857-anakunda
// @version 1.00
// @description Give better clues for reusing of existing releases/recordings in new release
// @match https://*musicbrainz.org/release/add
// @run-at document-end
// @grant GM_getValue
// @grant GM_setValue
// @author Anakunda
// @iconURL https://upload.wikimedia.org/wikipedia/commons/9/9e/MusicBrainz_Logo_%282016%29.svg
// @license GPL-3.0-or-later
// @require https://openuserjs.org/src/libs/Anakunda/xhrLib.min.js
// @require https://openuserjs.org/src/libs/Anakunda/libStringDistance.min.js
// @require https://openuserjs.org/src/libs/Anakunda/libTextDiff.min.js
// ==/UserScript==
{
'use strict';
const mbRequestsCache = new Map;
let mbLastRequest = null;
const mbOrigin = 'https://musicbrainz.org';
const createElements = (...tagNames) => tagNames.map(Document.prototype.createElement.bind(document));
const mbID = /([\da-f]{8}-[\da-f]{4}-[\da-f]{4}-[\da-f]{4}-[\da-f]{12})/i.source;
const rxMBID = new RegExp(`^${mbID}$`, 'i');
const mbRequestRate = 1000;
function mbApiRequest(endPoint, params) {
if (!endPoint) throw 'Endpoint is missing';
const url = new URL('/ws/2/' + endPoint.replace(/^\/+|\/+$/g, ''), mbOrigin);
url.search = new URLSearchParams(Object.assign({ fmt: 'json' }, params));
const cacheKey = url.pathname.slice(6) + url.search;
if (mbRequestsCache.has(cacheKey)) return mbRequestsCache.get(cacheKey);
const request = new Promise((resolve, reject) => { (function request(reqCounter = 1) {
if (reqCounter > 60) return reject('Request retry limit exceeded');
if (mbLastRequest == Infinity) return setTimeout(request, 50, reqCounter);
const now = Date.now();
if (now <= mbLastRequest + mbRequestRate)
return setTimeout(request, mbLastRequest + mbRequestRate - now, reqCounter);
mbLastRequest = Infinity;
localXHR(url, { responseType: 'json' }).then(function(response) {
mbLastRequest = Date.now();
resolve(response);
}, function(reason) {
mbLastRequest = Date.now();
reject(reason);
});
})() });
mbRequestsCache.set(cacheKey, request);
return request;
}
function mbIdExtractor(expr, entity) {
if (!expr || !expr) return null;
let mbId = rxMBID.exec(expr);
if (mbId) return mbId[1].toLowerCase(); else if (!entity) return null;
try { mbId = new URL(expr) } catch(e) { return null }
return mbId.hostname.endsWith('musicbrainz.org')
&& (mbId = new RegExp(`^\\/${entity}\\/${mbID}\\b`, 'i').exec(mbId.pathname)) != null ?
mbId[1].toLowerCase() : null;
}
function diffsToHTML(elem, diffs, what) {
if (!(elem instanceof HTMLElement) || !Array.isArray(diffs)) throw 'Invalid argument';
while (elem.lastChild != null) elem.removeChild(elem.lastChild);
for (let diff of diffs) if (diff[0] == what) elem.append(Object.assign(document.createElement('span'), {
style: 'color: red;',
textContent: diff[1],
})); else if (diff[0] == DIFF_EQUAL) elem.append(diff[1]);
}
function recalcScore(row) {
if (!(row instanceof HTMLTableRowElement)) return;
if (row.nextElementSibling != null && row.nextElementSibling.matches('tr.similarity-score-detail'))
row.nextElementSibling.remove();
let mbid = row.querySelector('input[type="radio"][name="base-release"]');
if (mbid != null) mbid = mbid.value; else return;
if (dupesTbl.tHead.querySelector('tr > th.similarity-score') == null)
dupesTbl.tHead.rows[0].insertBefore(Object.assign(document.createElement('th'), {
className: 'similarity-score',
textContent: 'Similarity',
}), dupesTbl.tHead.rows[0].cells[2]);
let score = row.querySelector('td.similarity-score');
if (score == null) row.insertBefore(score = Object.assign(document.createElement('td'),
{ className: 'similarity-score' }), row.cells[2]);
[score.style, score.onclick] = ['text-align: center; padding: 0.2em 0.5em;', null];
delete score.dataset.score;
const media = Array.from(document.body.querySelectorAll('div#recordings fieldset table#track-recording-assignation'),
(medium, mediumIndex) => ({ tracks: Array.from(medium.querySelectorAll('tbody > tr.track'), function(track, trackIndex) {
let position = track.querySelector('td.position');
position = position != null ? position.textContent.trim() : undefined;
let name = track.querySelector('td.name');
name = name != null ? name.textContent.trim() : undefined;
let length = track.querySelector('td.length');
length = length != null && (length = /\b(\d+):(\d+)\b/.exec(length.textContent.trim())) != null ?
(parseInt(length[1]) * 60 + parseInt(length[2])) * 1000 : undefined;
let artists = track.nextElementSibling != null && track.nextElementSibling.matches('tr.artist') ?
track.nextElementSibling.cells[0] : null;
artists = artists != null && artists.querySelectorAll('span.deleted').length <= 0 ?
Array.from(artists.getElementsByTagName('a'), artist => ({
id: mbIdExtractor(artist.href, 'artist'),
name: artist.textContent.trim(),
join: artist.nextSibling != null && artist.nextSibling.nodeType == Node.TEXT_NODE ?
artist.nextSibling.textContent : undefined,
})).filter(artist => artist.id) : undefined;
if (artists && artists.length <= 0) artists = undefined;
return { title: name, length: length, artists: artists };
}) }));
if (!media.some(medium => medium.tracks.some(track => track.title))) {
score.textContent = '---';
return;
}
document.body.querySelectorAll('div#tracklist fieldset.advanced-medium').forEach(function(medium, mediumIndex) {
let format = medium.querySelector('td.format > select');
format = format != null ? (format.options[format.selectedIndex].text).trim() : undefined;
let title = medium.querySelector('td.format > input[type="text"]');
title = title != null ? title.value.trim() : undefined;
if (media[mediumIndex]) Object.assign(media[mediumIndex], { format: format, title: title });
});
let mediaTracks = row.querySelector('td[data-bind="text: tracks"]');
if (mediaTracks != null) mediaTracks = mediaTracks.textContent.split('+').map(tt => parseInt(tt));
mediaTracks = mediaTracks && mediaTracks.length > 0 && mediaTracks.every(tt => tt > 0) ?
mediaTracks.length == media.length && mediaTracks.every((tt, mediaIndex) =>
media[mediaIndex].tracks.length == tt) : undefined;
(mediaTracks != false ? mbApiRequest('release/' + mbid, { inc: 'artist-credits recordings' }).then(function(release) {
function backgroundByScore(elem, score) {
elem.style.backgroundColor =
`rgb(${Math.round((1 - score) * 0xFF)}, ${Math.round(score * 0xFF)}, 0, 0.25)`;
}
if (release.media.length != media.length) throw 'Media counts mismatch';
const [tr, td, table, thead, trackNo, artist1, title1, dur1, artist2, title2, dur2] =
createElements('tr', 'td', 'table', 'thead', 'th', 'th', 'th', 'th', 'th', 'th', 'th');
tr.style = 'background-color: unset;';
table.className = 'media-comparison';
table.style = 'padding-left: 20pt; border-collapse: separate; border-spacing: 0;';
[tr.className, tr.hidden, td.colSpan] = ['similarity-score-detail', true, 10];
[
trackNo.textContent,
artist1.textContent, title1.textContent, dur1.textContent,
artist2.textContent, title2.textContent, dur2.textContent,
] = ['Pos', 'Release artist', 'Release title', 'Len', 'Seeded artist', 'Seeded title', 'Len'];
[trackNo, artist1, title1, dur1, artist2, title2, dur2]
.forEach(elem => { elem.style = 'padding: 0 5pt; text-align: left;' });
[trackNo, artist1, title1, dur1, artist2, title2, dur2]
.forEach(elem => { elem.style.borderTop = elem.style.borderBottom = 'solid 1px #999' });
[dur1, dur2].forEach(elem => { elem.style.whiteSpace = 'nowrap' });
thead.append(trackNo, artist1, title1, dur1, artist2, title2, dur2); table.append(thead);
const scoreToText = score => (score * 100).toFixed(0) + '%';
const scores = Array.prototype.concat.apply([ ], release.media.map(function(medium, mediumIndex) {
if (medium.tracks.length != media[mediumIndex].tracks.length) throw `Medium ${mediumIndex + 1} tracklist length mismatch`;
const [tbody, thead, mediumNo, mediumTitle1, mediumTitle2] =
createElements('tbody', 'tr', 'td', 'td', 'td');
tbody.className = `medium-${mediumIndex + 1}-tracks`;
[thead.className, thead.style] = ['medium-header', 'font-weight: bold;'];
let mediaTitles = [
'#' + (mediumIndex + 1),
medium.format || 'Unknown medium',
media[mediumIndex].format || 'Unknown medium',
];
if (medium.title) mediaTitles[1] += ': ' + medium.title;
if (media[mediumIndex].title) mediaTitles[2] += ': ' + media[mediumIndex].title;
[mediumTitle1, mediumTitle2].forEach(elem => { elem.colSpan = 3 });
[mediumNo.textContent, mediumTitle1.textContent, mediumTitle2.textContent] = mediaTitles;
[mediumNo, mediumTitle1, mediumTitle2].forEach(elem =>
{ elem.style = 'padding: 3pt 5pt; border-top: dotted 1px #999; border-bottom: dotted 1px #999;' });
mediumNo.style.textAlign = 'right';
thead.append(mediumNo, mediumTitle1, mediumTitle2); tbody.append(thead);
const scores = medium.tracks.map(function(track, trackIndex) {
function insertArtists(elem, artists) {
if (Array.isArray(artists)) artists.forEach(function(artistCredit, index, array) {
elem.append(Object.assign(document.createElement('a'), {
href: '/artist/' + artistCredit.id, target: '_blank',
textContent: artistCredit.name,
}));
if (index > array.length - 2) return;
elem.append(artistCredit.join || (index < array.length - 2 ? ', ' : ' & '));
});
}
const seedTrack = media[mediumIndex].tracks[trackIndex];
const [tr, trackNo, artist1, title1, dur1, artist2, title2, dur2, recording] =
createElements('tr', 'td', 'td', 'td', 'td', 'td', 'td', 'td', 'a');
const trackTitle = /*track.recording && track.recording.title || */track.title;
let score = similarity(seedTrack.title, trackTitle);
[title1, title2].forEach(elem => { backgroundByScore(elem, score); elem.dataset.score = score });
if (track.recording && track.recording.length > 0 && seedTrack.length > 0) {
let delta = Math.abs(track.recording.length - seedTrack.length);
if (delta > 5000) score *= 0.1;
[dur1, dur2].forEach(elem => { backgroundByScore(elem, delta > 5000 ? 0 : 1 - delta / 10000) });
}
if (seedTrack.artists) {
if (seedTrack.artists.length != track['artist-credit'].length
|| !seedTrack.artists.every(seedArtist => track['artist-credit']
.some(artistCredit => artistCredit.artist.id == seedArtist.id))) {
score *= 0.75;
[artist1, artist2].forEach(elem => { backgroundByScore(elem, 0) });
} else [artist1, artist2].forEach(elem => { backgroundByScore(elem, 1) });
}
trackNo.textContent = trackIndex + 1;
insertArtists(artist1, track['artist-credit'].map(artistCredit => ({
id: artistCredit.artist.id,
name: artistCredit.name,
join: artistCredit.joinphrase,
})));
if (seedTrack.artists) insertArtists(artist2, seedTrack.artists);
else [artist2.textContent, artist2.style.color] = ['???', 'grey'];
[recording.href, recording.target] = ['/recording/' + track.recording.id, '_blank'];
recording.dataset.title = recording.textContent = trackTitle;
recording.style.color = 'inherit';
title1.append(recording);
title2.dataset.title = title2.textContent = seedTrack.title;
[recording, title2].forEach(elem => { elem.className = 'name' });
[dur1.textContent, dur2.textContent] = [track.recording && track.recording.length, seedTrack.length]
.map(length => length > 0 ? Math.floor((length = Math.round(length / 1000)) / 60) + ':' +
(length % 60).toString().padStart(2, '0') : '?:??');
[trackNo, artist1, title1, dur1, artist2, title2, dur2]
.forEach(elem => { elem.style.padding = '0 5pt' });
[trackNo, dur1, dur2].forEach(elem => { elem.style.textAlign = 'right' });
[tr.className, tr.title, tr.dataset.score] = ['track', scoreToText(score), score];
tr.append(trackNo, artist1, title1, dur1, artist2, title2, dur2); tbody.append(tr);
tr.cells.forEach(td => { if (!td.style.backgroundColor) backgroundByScore(td, score) });
return score;
});
table.append(tbody);
const loScore = Math.min(...scores);
backgroundByScore(thead, loScore);
const avgScore = scores.reduce((sum, score) => sum + score, 0) / scores.length;
thead.title = `Average score ${scoreToText(avgScore)} (worst: ${scoreToText(loScore)})`;
thead.dataset.score = avgScore;
return scores;
}));
const loScore = Math.min(...scores);
const avgScore = scores.reduce((sum, score) => sum + score, 0) / scores.length;
[score.textContent, score.dataset.score] = [scoreToText(avgScore), avgScore];
score.style.cursor = 'pointer';
score.style.color = '#' + ((Math.round((1 - avgScore) * 0x80) * 2**16) +
(Math.round(avgScore * 0x80) * 2**8)).toString(16).padStart(6, '0');
if (loScore >= 0.8) score.style.fontWeight = 'bold';
backgroundByScore(score, loScore);
score.onclick = function(evt) {
const tr = evt.currentTarget.parentNode.nextElementSibling;
console.assert(tr != null);
if (tr == null) return alert('Assertion failed: table row not exist');
tr.hidden = !tr.hidden;
if (!useDiff) return;
const diff = new Diff({ timeout: 1000 });
for (let row of tr.querySelectorAll('table.media-comparison > tbody > tr.track')) {
if (row.classList.contains('highlight')) continue; else row.classList.add('highlight');
const nodes = row.getElementsByClassName('name');
if (nodes.length < 2) continue; // assertion failed
const diffs = diff.main(...Array.from(nodes, node => node.dataset.title));
diffsToHTML(nodes[0], diffs, DIFF_DELETE);
diffsToHTML(nodes[1], diffs, DIFF_INSERT);
}
};
score.title = 'Worst track: ' + scoreToText(loScore);
td.append(table); tr.append(td); row.after(tr);
}) : Promise.reject('Media/track counts mismatch')).catch(function(reason) {
score.textContent = /\b(?:mismatch)\b/i.test(reason) ? 'Mismatch' : 'Error';
[score.style.color, score.title] = ['red', reason];
});
}
function installObserver(root, changeListener) {
const mo = new MutationObserver(function(ml) {
for (let mutation of ml) {
for (let node of mutation.removedNodes) changeListener(node, 'remove', true);
for (let node of mutation.addedNodes) changeListener(node, 'add', true);
}
});
mo.observe(root, { childList: true });
return mo;
}
function changeTrackListener(node, what, autoRecalc = false) {
if (node.nodeType != Node.ELEMENT_NODE || !node.matches('tr.track')) return;
const bdi = node.querySelector('td.name > bdi');
console.assert(bdi != null, 'Failed to select track title', node);
if (bdi != null) if (what == 'add') {
bdi.mo = new MutationObserver(recalcScores);
bdi.mo.observe(bdi.firstChild, { characterData: true });
} else if (what == 'remove' && bdi.mo instanceof MutationObserver) bdi.mo.disconnect();
const artist = node.nextElementSibling != null && node.nextElementSibling.matches('tr.artist') ?
node.nextElementSibling.querySelector(':scope > td:first-of-type') : null;
console.assert(artist != null, 'Failed to select track artist', node);
if (artist != null) if (what == 'add') {
artist.mo = new MutationObserver(ml =>
{ if (ml.some(mutation => mutation.addedNodes.length > 0)) recalcScores() });
artist.mo.observe(artist, { childList: true });
} else if (what == 'remove' && artist.mo instanceof MutationObserver) artist.mo.disconnect();
if (what == 'add' && autoRecalc) recalcScores();
}
function changeTableObserver(node, what, autoRecalc = false) {
if (node.nodeName == 'TBODY') if (what == 'add') {
const tracks = node.querySelectorAll('tr.track');
tracks.forEach(track => { changeTrackListener(track, what, false) });
node.mo = installObserver(node, changeTrackListener);
if (tracks.length > 0 && autoRecalc) recalcScores();
} else if (what == 'remove' && node.mo instanceof MutationObserver) node.mo.disconnect();
}
function changeMediumListener(node, what, autoRecalc = false) {
if (node.nodeName != 'FIELDSET'
|| (node = node.querySelector('table#track-recording-assignation')) == null) return;
if (what == 'add') {
node.tBodies.forEach(tBody => { changeTableObserver(tBody, what, false) });
node.mo = installObserver(node, changeTableObserver);
if (node.tBodies.length > 0 && autoRecalc) recalcScores();
} else if (what == 'remove') {
node.tBodies.forEach(tBody => { changeTableObserver(tBody, what) });
if (node.mo instanceof MutationObserver) node.mo.disconnect();
}
}
function changeListener(node, what, autoRecalc = false) {
if (node.nodeType != Node.ELEMENT_NODE || !node.matches('fieldset.advanced-medium')
|| (node = node.querySelector('table.advanced-format > tbody > tr > td.format')) == null) return;
['select', 'input[type="text"]'].map(selector => node.querySelector(':scope > ' + selector))
.forEach(elem => { if (elem != null) elem[what + 'EventListener']('change', recalcScores) });
if (what == 'add' && autoRecalc) recalcScores();
}
const dupesTbl = document.body.querySelector('div#duplicates-tab > fieldset table');
if (dupesTbl == null) return;
// const similarityAlgo = (strA, strB) => Math.pow(0.985, sift4distance(strA, strB, 5, {
// tokenizer: characterFrequencyTokenizer,
// localLengthEvaluator: rewardLengthEvaluator,
// //transpositionsEvaluator: longerTranspositionsAreMoreCostly,
// }));
const similarityAlgo = (strA, strB) => Math.pow(jaroWinklerSimilarity(strA, strB), 6);
const similarity = (...str) => (str = str.slice(0, 2)).every(Boolean) ?
similarityAlgo(...str.map(title => title.toLowerCase())) : 0;
const recalcScores = () => { for (let tBody of dupesTbl.tBodies) tBody.rows.forEach(recalcScore) };
const useDiff = GM_getValue('mb_use_diff', true);
for (let tBody of dupesTbl.tBodies) new MutationObserver(function(ml) {
for (let mutation of ml) {
for (let node of mutation.removedNodes) if (node.tagName == 'TR' && node.nextElementSibling != null
&& node.nextElementSibling.matches('tr.similarity-score-detail')) node.nextElementSibling.remove();
mutation.addedNodes.forEach(recalcScore);
}
}).observe(tBody, { childList: true });
if (!GM_getValue('mb_score_auto_refresh', true)) return;
let root = document.querySelector('div#recordings');
if (root != null) new MutationObserver(function(ml) {
for (let mutation of ml) if (mutation.target.style.display != 'none') {
const diff = useDiff ? new Diff({ timeout: 1000 }) : null;
for (let track of mutation.target.querySelectorAll('table#track-recording-assignation > tbody > tr.track')) {
const bdis = track.querySelectorAll('td.name bdi');
bdis.forEach(bdi => { if (bdi.childElementCount <= 0) bdi.dataset.title = bdi.textContent.trim() });
const titles = Array.from(bdis, bdi => bdi.dataset.title);
if (bdis.length < 2 || titles[0] == titles[1]) bdis.forEach(function(elem) {
if (elem.style.backgroundColor) elem.style.backgroundColor = null;
if (elem.dataset.title && elem.childElementCount > 0) elem.textContent = elem.dataset.title;
}); else {
const score = similarity(...titles);
bdis.forEach(bdi => { bdi.style.backgroundColor = `rgb(255, 0, 0, ${0.3 - 0.2 * score})` });
if (!useDiff) continue;
const diffs = diff.main(...titles);
diffsToHTML(bdis[0], diffs, DIFF_DELETE);
diffsToHTML(bdis[1], diffs, DIFF_INSERT);
}
}
}
}).observe(root, { attributes: true, attributeFilter: ['style'] });
if (root == null || (root = root.querySelector('div.half-width > div')) == null) return;
const fieldsets = root.getElementsByTagName('fieldset');
fieldsets.forEach(fieldset => { changeMediumListener(fieldset, 'add', false) });
installObserver(root, changeMediumListener);
if (fieldsets.length > 0) recalcScores();
root = document.body.querySelector('div#tracklist > div[data-bind="with: rootField.release"]');
if (root == null) return; else root.querySelectorAll('fieldset.advanced-medium')
.forEach(fieldset => { changeListener(fieldset, 'add', false) });
installObserver(root, changeListener);
}