[RED] Import release details from Bandcamp

Lets find music release on Bandcamp and import release about, personnel credits, cover image and tags.
当前为 2022-11-07 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         [RED] Import release details from Bandcamp
// @namespace    https://greasyfork.org/users/321857-anakunda
// @version      0.25.1
// @match        https://redacted.ch/upload.php
// @match        https://redacted.ch/upload.php&url=*
// @match        https://redacted.ch/requests.php?action=new
// @match        https://redacted.ch/requests.php?action=new&groupid=*
// @match        https://redacted.ch/requests.php?action=new&url=*
// @match        https://redacted.ch/torrents.php?id=*
// @match        https://redacted.ch/torrents.php?page=*&id=*
// @match        https://orpheus.network/upload.php
// @match        https://orpheus.network/upload.php?url=*
// @match        https://orpheus.network/requests.php?action=new
// @match        https://orpheus.network/requests.php?action=new&groupid=*
// @match        https://orpheus.network/requests.php?action=new&url=*
// @match        https://orpheus.network/torrents.php?id=*
// @match        https://orpheus.network/torrents.php?page=*&id=*
// @run-at       document-end
// @iconURL      https://s4.bcbits.com/img/favicon/favicon-32x32.png
// @author       Anakunda
// @description  Lets find music release on Bandcamp and import release about, personnel credits, cover image and tags.
// @copyright    2022, Anakunda (https://greasyfork.org/users/321857-anakunda)
// @license      GPL-3.0-or-later
// @connect      *
// @grant        GM_xmlhttpRequest
// @grant        GM_getValue
// @grant        GM_setValue
// @require      https://openuserjs.org/src/libs/Anakunda/xhrLib.min.js
// @require      https://openuserjs.org/src/libs/Anakunda/libLocks.min.js
// @require      https://openuserjs.org/src/libs/Anakunda/gazelleApiLib.min.js
// @require      https://openuserjs.org/src/libs/Anakunda/QobuzLib.min.js
// @require      https://openuserjs.org/src/libs/Anakunda/GazelleTagManager.min.js
// ==/UserScript==
 
'use strict';
 
const imageHostHelper = (function() {
	const input = document.head.querySelector('meta[name="ImageHostHelper"]');
	return (input != null ? Promise.resolve(input) : new Promise(function(resolve, reject) {
		const mo = new MutationObserver(function(mutationsList, mo) {
			for (let mutation of mutationsList) for (let node of mutation.addedNodes) {
				if (node.nodeName != 'META' || node.name != 'ImageHostHelper') continue;
				clearTimeout(timer); mo.disconnect();
				return resolve(node);
			}
		}), timer = setTimeout(function(mo) {
			mo.disconnect();
			reject('Timeout reached');
		}, 15000, mo);
		mo.observe(document.head, { childList: true });
	})).then(function(node) {
		console.assert(node instanceof HTMLElement);
		const propName = node.getAttribute('propertyname');
		console.assert(propName);
		return unsafeWindow[propName] || Promise.reject(`Assertion failed: '${propName}' not in unsafeWindow`);
	});
})();
 
const nothingFound = 'Nothing found';
const stripText = text => text ? [
	[/\r\n/gm, '\n'], [/[^\S\n]+$/gm, ''], [/\n{3,}/gm, '\n\n'],
].reduce((text, subst) => text.replace(...subst), text.trim()) : '';
 
function getSearchResults(torrentGroup, fullSearchResults = true, thoroughSearch = false) {
	function tryQuery(terms) {
		if (!Array.isArray(terms)) throw 'Invalid qrgument';
		if (terms.length <= 0) return Promise.reject(nothingFound);
		const url = new URL('https://bandcamp.com/search');
		url.searchParams.set('q', terms.map(term => '"' + term + '"').join(' '));
		const searchType = itemType => (function getPage(page = 1) {
			if (itemType) url.searchParams.set('item_type', itemType); else url.searchParams.delete('item_type');
			url.searchParams.set('page', page);
			return globalXHR(url).then(function({document}) {
				const results = Array.prototype.filter.call(document.body.querySelectorAll('div.search ul.result-items > li.searchresult'), function(li) {
					let searchType = li.dataset.search;
					if (searchType) try { searchType = JSON.parse(searchType).type.toLowerCase() } catch(e) { console.warn(e) }
					return !searchType || ['a', 't'].includes(searchType);
				});
				const nextLink = document.body.querySelector('div.pager > a.next');
				return nextLink != null ? getPage(page + 1, itemType).then(_results => results.concat(_results)) : results;
			});
		})().then(results => results.length > 0 ? results : Promise.reject(nothingFound));
		return searchType(); //('a').catch(reason => torrentGroup.group.releaseType == 9 && reason == nothingFound ? searchType('t') : Promise.reject(reason));
	}
 
	if (!torrentGroup) return Promise.reject('Assertion failed: invalid argument (torrentGroup)');
	const artists = torrentGroup.group.releaseType != 7 && torrentGroup.group.musicInfo
		&& Array.isArray(torrentGroup.group.musicInfo.artists) && torrentGroup.group.musicInfo.artists.length > 0 ?
			torrentGroup.group.musicInfo.artists.map(artist => artist.name.trim()).slice(0, 2) : null;
	const album = [
		/\s+(?:EP|E\.\s?P\.|-\s+(?:EP|E\.\s?P\.))$/i,
		/\s+\((?:EP|E\.\s?P\.|Live)\)$/i, /\s+\[(?:EP|E\.\s?P\.|Live)\]$/i,
		/\s+\((?:feat\.|ft\.|featuring\s).+\)$/i, /\s+\[(?:feat\.|ft\.|featuring\s).+\]$/i,
	].reduce((title, rx) => title.replace(rx, ''), torrentGroup.group.name.trim());
	if (!album) return Promise.reject('Album title missing');
	const bracketStripper = /(?:\s+(?:\([^\(\)]+\)|\[[^\[\]]+\]|\{[^\{\}]+\}))+$/g;
	const searchAlbumOnly = () => tryQuery([album]).catch(reason => reason == nothingFound ? bracketStripper.test(album) ?
		tryQuery([album.replace(bracketStripper, '')]) : Promise.reject(nothingFound) : Promise.reject(reason));
	if (artists == null) return searchAlbumOnly();
	let lookupWorker = tryQuery(artists.concat(album)).catch(reason => reason == nothingFound ?
		artists.some(artist => bracketStripper.test(artist)) || bracketStripper.test(album) ?
			tryQuery(artists.map(artist => artist.replace(bracketStripper, '')).concat(album.replace(bracketStripper, '')))
				: Promise.reject(nothingFound) : Promise.reject(reason));
	if (thoroughSearch) lookupWorker = lookupWorker.catch(reason =>
		reason == nothingFound ? searchAlbumOnly() : Promise.reject(reason));
	return lookupWorker;
}
 
const matchingResultsCount = groupId => groupId > 0 ? new Promise(function findSharedTorrentGroup(resolve, reject) {
	const meta = document.head.querySelector(':scope > meta[name="torrentgroup"]');
	if (meta != null && 'torrentGroup' in unsafeWindow) return resolve(unsafeWindow.torrentGroup);
	const mo = new MutationObserver(function(ml, mo) {
		for (let mutation of ml) for (let node of mutation.addedNodes) if (node.tagName == 'META' && node.name == 'torrentgroup') {
			clearTimeout(timeout); mo.disconnect();
			if (unsafeWindow.torrentGroup) resolve(unsafeWindow.torrentGroup);
				else reject('Assertion failed: ' + node.name + ' not in unsafeWindow');
		}
	});
	mo.observe(document.head, { childList: true });
	const timeout = setTimeout(function(mo) {
		mo.disconnect();
		reject('torrentGroup monitor timed out');
	}, GM_getValue('tab_data_timeout', 2500), mo);
}).catch(function(reason) {
	console.log(reason);
	return queryAjaxAPICached('torrentgroup', { id: groupId }, true);
}).then(torrentGroup => getSearchResults(torrentGroup).then(searchResults => searchResults.map(function(li) {
	const searchResult = {
		itemType: li.querySelector('div.itemtype'),
		numTracks: li.querySelector('div.length'),
		releaseYear: li.querySelector('div.released'),
	};
	if (searchResult.itemType != null) searchResult.itemType = searchResult.itemType.textContent.trim().toLowerCase();
	if (searchResult.releaseYear != null
			&& (searchResult.releaseYear = /\b(\d{4})\b/.exec(searchResult.releaseYear.textContent)) != null)
		searchResult.releaseYear = parseInt(searchResult.releaseYear[1]);
	if (searchResult.itemType == 'track') searchResult.numTracks = 1;
	else if (searchResult.numTracks != null
			&& (searchResult.numTracks = /\b(\d+)\s+(?:tracks?)\b/i.exec(searchResult.numTracks.textContent)) != null)
		searchResult.numTracks = parseInt(searchResult.numTracks[1]);
	else searchResult.numTracks = 0;
	return searchResult;
})).then(searchResults => searchResults.filter(function(searchResult) {
	if (searchResult.releaseYear > 0 && torrentGroup.group.year > searchResult.releaseYear) return false;
	return torrentGroup.torrents.some(function(torrent) {
		if (torrent.remasterYear > 0 && searchResult.releaseYear > 0 && torrent.remasterYear != searchResult.releaseYear) return false;
		const audioFileCount = torrent.fileList ? torrent.fileList.split('|||').filter(file =>
			/^(.+\.(?:flac|mp3|m4[ab]|aac|dts(?:hd)?|truehd|ac3|ogg|opus|wv|ape))\{{3}(\d+)\}{3}$/i.test(file)).length : 0;
		console.assert(audioFileCount > 0);
		if (audioFileCount > 0 && searchResult.numTracks > 0 && audioFileCount != searchResult.numTracks) return false;
		return torrent.remasterYear > 0 && searchResult.releaseYear > 0 || audioFileCount > 0 && searchResult.numTracks > 0;
	});
}))).then(matchingResults => matchingResults.length > 0 ? matchingResults.length : Promise.reject(nothingFound)) : Promise.reject('Invalid argument');
 
const fetchBandcampDetails = torrentGroup => getSearchResults(torrentGroup, GM_getValue('full_search_results', true), true)
		.then(searchResults => new Promise(function(resolve, reject) {
	console.assert(searchResults.length > 0);
	let selectedRow = null, dialog = document.createElement('DIALOG');
	dialog.innerHTML = `
<form method="dialog">
	<div style="margin-bottom: 10pt; padding: 4px; background-color: #111; box-shadow: 1pt 1pt 5px #bbb inset;">
		<ul id="bandcamp-search-results" style="list-style-type: none; width: 645px; max-height: 70vw; overflow-y: auto; overscroll-behavior-y: none; scrollbar-gutter: stable; scroll-behavior: auto; scrollbar-color: #444 #222;" />
	</div>
	<input value="Import" type="button" disabled /><input value="Cancel" type="button" style="margin-left: 5pt;" /><div style="display: inline-block; margin-left: 15pt;">
		<label style="border: 2px groove black; padding: 3pt 3pt 3pt 4pt;"><input name="update-tags" style="margin-right: 4pt;" type="checkbox" />Tags
			<label style="margin-left: 5pt;"><input style="margin-right: 4pt;" name="preserve-tags" type="checkbox" />Preserve</label>
		</label><label style="margin-left: 5pt;border: 2px groove black; padding: 3pt 3pt 3pt 4pt;"><input style="margin-right: 4pt;" name="update-image" type="checkbox" />Cover</label><label style="margin-left: 4pt;border: 2px groove black; padding: 3pt 3pt 3pt 4pt;"><input style="margin-right: 4pt;" name="update-description" type="checkbox" />Description
			<label style="margin-left: 5pt;"><input style="margin-right: 4pt;" name="insert-about" type="checkbox" />About</label><label style="margin-left: 5pt;"><input style="margin-right: 4pt;" name="insert-credits" type="checkbox" />Credits</label><label style="margin-left: 5pt;"><input style="margin-right: 4pt;" name="insert-url" type="checkbox" />URL</label>
		</label>
	</div>
</form>`;
	const form = dialog.querySelector(':scope > form');
	console.assert(form != null);
	dialog.style = 'position: fixed; top: 5%; left: 0; right: 0; padding: 10pt; margin-left: auto; margin-right: auto; background-color: gray; box-shadow: 5px 5px 10px; z-index: 9999;';
	dialog.onkeyup = function(evt) {
		if (evt.key != 'Escape') return true;
		evt.currentTarget.close();
		return false;
	};
	dialog.oncancel = evt => { reject('Cancelled') };
	dialog.onclose = function(evt) {
		if (!evt.currentTarget.returnValue) reject('Cancelled');
		document.body.removeChild(evt.currentTarget);
	};
	const ul = dialog.querySelector('ul#bandcamp-search-results'), buttons = dialog.querySelectorAll('input[type="button"]');
	for (let li of searchResults) {
		for (let a of li.getElementsByTagName('A')) {
			a.onclick = evt => { if (!evt.ctrlKey && !evt.shiftKey) return false };
			a.search = '';
		}
		for (let styleSheet of [
			['.searchresult .art img', 'max-height: 145px; max-width: 145px;'],
			['.result-info', 'display: inline-block; color: white; padding: 1pt 10pt; box-sizing: border-box; vertical-align: top; width: 475px; line-height: 1.4em;'],
			['.itemtype', 'font-size: 10px; color: #999; margin-bottom: 0.5em; padding: 0;'],
			['.heading', 'font-size: 16px; margin-bottom: 0.1em; padding: 0;'],
			['.subhead', 'font-size: 13px; margin-bottom: 0.3em; padding: 0;'],
			['.released', 'font-size: 11px; padding: 0;'],
			['.itemurl', 'font-size: 11px; padding: 0;'],
			['.itemurl a', 'color: #84c67d;'],
			['.tags', 'color: #aaa; font-size: 11px; padding: 0;'],
		]) for (let elem of li.querySelectorAll(styleSheet[0])) elem.style = styleSheet[1];
		li.style = 'cursor: pointer; margin: 0; padding: 4px;';
		for (let child of li.children) child.style.display = 'inline-block';
		let confidence = 1;
		let [itemType, numTracks, releaseYear] = ['div.itemtype', 'div.length', 'div.released'].map(sel => li.querySelector(sel));
		if (itemType != null) itemType = itemType.textContent.trim().toLowerCase();
		if (releaseYear != null && (releaseYear = /\b(\d{4})\b/.exec(releaseYear.textContent)) != null) releaseYear = parseInt(releaseYear[1]);
		if (itemType == 'track') numTracks = 1;
		else if (numTracks != null && (numTracks = /\b(\d+)\s+(?:tracks?)\b/i.exec(numTracks.textContent)) != null)
			numTracks = parseInt(numTracks[1]);
		if (releaseYear > 0 && torrentGroup.group.year > releaseYear) confidence *= 1/2;
		else if ('torrents' in torrentGroup && torrentGroup.torrents.length > 0) {
			if (releaseYear > 0 && !torrentGroup.torrents.some(torrent =>
					!(torrent.remasterYear > 0) || torrent.remasterYear == releaseYear)) confidence *= 3/4;
			if (numTracks > 0 && !torrentGroup.torrents.some(function(torrent) {
				const audioFileCount = torrent.fileList ? torrent.fileList.split('|||').filter(file =>
					/^(.+\.(?:flac|mp3|m4[ab]|aac|dts(?:hd)?|truehd|ac3|ogg|opus|wv|ape))\{{3}(\d+)\}{3}$/i.test(file)).length : 0;
				console.assert(audioFileCount > 0);
				return audioFileCount == numTracks || audioFileCount == 0;
			})) confidence *= 3/4;
		}
		if (confidence < 1) li.style.opacity = confidence;
		li.onclick = function(evt) {
			if (selectedRow != null) selectedRow.style.backgroundColor = null;
			(selectedRow = evt.currentTarget).style.backgroundColor = '#066';
			buttons[0].disabled = false;
		};
	}
	for (let li of searchResults.sort((a, b) => (parseFloat(b.style.opacity) || 1) - (parseFloat(a.style.opacity) || 1))) ul.append(li);
	buttons[0].onclick = function(evt) {
		evt.currentTarget.disabled = true;
		console.assert(selectedRow instanceof HTMLLIElement);
		const a = selectedRow.querySelector('div.result-info > div.heading > a');
		if (a != null) globalXHR(a.href).then(function({document}) {
			function safeParse(serialized) {
				if (serialized) try { return JSON.parse(serialized) } catch (e) { console.warn('BC meta invalid: %s', e, serialized) }
				return null;
			}
 
			const savePreset = (prefName, inputName) => { GM_setValue(prefName, form.elements[inputName].checked) };
			savePreset('update_tags', 'update-tags');
			GM_setValue('preserve_tags', form.elements['preserve-tags'].checked ? 1 : 0);
			savePreset('update_image', 'update-image');
			savePreset('update_description', 'update-description');
			savePreset('description_insert_about', 'insert-about');
			savePreset('description_insert_credits', 'insert-credits');
			savePreset('description_insert_url', 'insert-url');
 
			const details = { };
			let elem = document.head.querySelector(':scope > script[type="application/ld+json"]');
			const releaseMeta = elem && safeParse(elem.text);
			const tralbum = (elem = document.head.querySelector('script[data-tralbum]')) && safeParse(elem.dataset.tralbum);
			if (tralbum != null && Array.isArray(tralbum.packages) && tralbum.packages.length > 0) for (let key in tralbum.packages[0])
				if (!tralbum.current[key] && tralbum.packages.every(pkg => pkg[key] == tralbum.packages[0][key]))
					tralbum.current[key] = tralbum.packages[0][key];
			if (releaseMeta != null && releaseMeta.byArtist) details.artist = releaseMeta.byArtist.name;
			if (releaseMeta != null && releaseMeta.name) details.title = releaseMeta.name;
			if (releaseMeta != null && releaseMeta.numTracks) details.numTracks = releaseMeta.numTracks;
			if (releaseMeta != null && releaseMeta.datePublished) details.releaseDate = new Date(releaseMeta.datePublished);
			else if (tralbum != null && tralbum.current.album_publish_date) details.releaseDate = new Date(tralbum.current.album_publish_date);
			if (releaseMeta != null && releaseMeta.publisher) details.publisher = releaseMeta.publisher.name;
			if (tralbum != null && tralbum.current.upc) details.upc = tralbum.current.upc;
			if (releaseMeta != null && releaseMeta.image) details.image = releaseMeta.image;
			else if ((elem = document.head.querySelector('meta[property="og:image"][content]')) != null) details.image = elem.content;
			else if ((elem = document.querySelector('div#tralbumArt > a.popupImage')) != null) details.image = elem.href;
			if (details.image) details.image = details.image.replace(/_\d+(?=\.\w+$)/, '_10');
			details.tags = releaseMeta != null && Array.isArray(releaseMeta.keywords) ? new TagManager(...releaseMeta.keywords)
				: new TagManager(...Array.from(document.querySelectorAll('div.tralbum-tags > a.tag'), a => a.textContent.trim()));
			if (details.tags.length < 0) delete details.tags;
			if (tralbum != null && tralbum.current.minimum_price <= 0) details.tags.add('freely.available');
			if (releaseMeta != null && releaseMeta.description) details.description = releaseMeta.description;
			else if (tralbum != null && tralbum.current.about) details.description = tralbum.current.about;
			if (details.description) details.description = stripText(details.description)
				.replace(/^24[^\S\n]*bits?[^\S\n]*\/[^\S\n]*\d+(?:\.\d+)?[^\S\n]*k(?:Hz)?$\n+/m, '');
			if (releaseMeta != null && releaseMeta.creditText) details.credits = tralbum.current.credits;
			else if (tralbum != null && tralbum.current.credits) details.credits = tralbum.current.credits;
			if (details.credits) details.credits = stripText(details.credits);
			if (releaseMeta != null && releaseMeta.mainEntityOfPage) details.url = releaseMeta.mainEntityOfPage;
			else if (tralbum != null && tralbum.url) details.url = tralbum.url;
			if (tralbum != null && tralbum.art_id) details.artId = tralbum.art_id;
			if (tralbum != null && tralbum.current.album_id) details.id = tralbum.current.album_id;
			resolve(details);
		}, reject); else reject('Assertion failed: BC release link not found');
		dialog.close(a != null ? a.href : '');
	};
	buttons[1].onclick = evt => { dialog.close() };
 
	const loadPreset = (inputName, presetName, presetDefault) =>
		{ form.elements[inputName].checked = GM_getValue(presetName, presetDefault) };
	loadPreset('update-tags', 'update_tags', true);
	form.elements['update-tags'].onchange = function(evt) {
		form.elements['preserve-tags'].disabled = !evt.currentTarget.checked;
	};
	form.elements['update-tags'].dispatchEvent(new Event('change'));
	form.elements['preserve-tags'].checked = GM_getValue('preserve_tags', 0) > 0;
	loadPreset('update-image', 'update_image', true);
	loadPreset('update-description', 'update_description', true);
	form.elements['update-description'].onchange = function(evt) {
		form.elements['insert-about'].disabled = form.elements['insert-credits'].disabled =
			form.elements['insert-url'].disabled = !evt.currentTarget.checked;
	};
	form.elements['update-description'].dispatchEvent(new Event('change'));
	loadPreset('insert-about', 'description_insert_about', true);
	loadPreset('insert-credits', 'description_insert_credits', true);
	loadPreset('insert-url', 'description_insert_url', true);
 
	document.body.append(dialog);
	dialog.showModal();
	ul.focus();
}));
 
const siteTagsCache = 'siteTagsCache' in localStorage ? (function(serialized) {
	try { return JSON.parse(serialized) } catch(e) { return { } }
})(localStorage.getItem('siteTagsCache')) : { };
function getVerifiedTags(tags, confidencyThreshold = GM_getValue('tags_confidency_threshold', 1)) {
	if (!Array.isArray(tags)) throw 'Invalid argument';
	return Promise.all(tags.map(function(tag) {
		if (!(confidencyThreshold > 0) || tmWhitelist.includes(tag) || siteTagsCache[tag] >= confidencyThreshold)
			return Promise.resolve(tag);
		return queryAjaxAPICached('browse', { taglist: tag }).then(function(response) {
			const usage = response.pages > 1 ? (response.pages - 1) * 50 + 1 : response.results.length;
			if (usage < confidencyThreshold) return false;
			siteTagsCache[tag] = usage;
			Promise.resolve(siteTagsCache).then(cache => { localStorage.setItem('siteTagsCache', JSON.stringify(cache)) });
			return tag;
		}, reason => false);
	})).then(results => results.filter(Boolean));
}
 
function importToBody(bcReleaseDetails, body) {
	function insertSection(section, afterBegin = true, beforeLinks = true, beforeEnd = true) {
		if (section) if (!body) body = section;
		else if (afterBegin && rx.afterBegin.some(rx => rx.test(body)))
			body = RegExp.lastMatch + section + '\n\n' + RegExp.rightContext.trimLeft();
		else if (beforeLinks && rx.beforeLinks.test('\n' + body))
			body = (RegExp.leftContext + '\n\n').trimLeft() + section + '\n\n' + RegExp.lastMatch.trimLeft();
		else if (beforeEnd && rx.beforeEnd.some(rx => rx.test(body)))
			body = RegExp.leftContext.trimRight() + '\n\n' + section + RegExp.lastMatch.trimLeft();
		else body += '\n\n' + section;
	}
 
	body = stripText(body);
	const rx = {
		afterBegin: [/^\[pad=\d+\|\d+\]/i, /^Releas(?:ing|ed) .+\d{4}$(?:\r?\n){2,}/im],
		beforeLinks: /(?:(?:\r?\n)+(?:(?:More info(?:rmation)?:|\[b\]More info(?:rmation)?:\[\/b\])[^\S\r\n]+)?(?:\[url(?:=[^\[\]]+)?\].+\[\/url\]|https?:\/\/\S+))+(?:\[\/size\]\[\/pad\])?$/i,
		beforeEnd: [/\[\/size\]\[\/pad\]$/i],
	};
	if (bcReleaseDetails.description && bcReleaseDetails.description.length > 10
			&& ![ ].some(rx => rx.test(bcReleaseDetails.description))
			&& GM_getValue('description_insert_about', true) && !body.includes(bcReleaseDetails.description))
		insertSection('[quote][plain]' + bcReleaseDetails.description + '[/plain][/quote]', true, true, true);
	if (document.location.pathname != '/requests.php' && bcReleaseDetails.credits && bcReleaseDetails.credits.length > 10
			&& ![ ].some(rx => rx.test(bcReleaseDetails.credits))
			&& GM_getValue('description_insert_credits', true) && !body.includes(bcReleaseDetails.credits))
		insertSection('[hide=Credits][plain]' + bcReleaseDetails.credits + '[/plain][/hide]', false, true, true);
	if (bcReleaseDetails.url && GM_getValue('description_insert_url', true) && !body.includes(bcReleaseDetails.url))
		insertSection('[url=' + bcReleaseDetails.url + ']Bandcamp[/url]', false, false, true);
	return body.replace(/(\[\/quote\])(?:\r?\n){2,}/ig, '$1\n');
}
 
const urlParams = new URLSearchParams(document.location.search);
switch (document.location.pathname) {
	case '/torrents.php': {
		if (document.querySelector('div.sidebar > div.box_artists') == null) break; // Nothing to do here - not music torrent
		const groupId = parseInt(urlParams.get('id'));
		if (!(groupId > 0)) throw 'Invalid group id';
		const linkBox = document.body.querySelector('div.header > div.linkbox');
		if (linkBox == null) throw 'LinkBox not found';
		const a = document.createElement('A');
		a.textContent = 'Bandcamp import';
		a.href = '#';
		a.title = 'Import album textual description, tags and cover image from Bandcamp release page';
		a.className = 'brackets';
		a.onclick = function(evt) {
			if (!this.disabled) this.disabled = true; else return false;
			this.style.color = 'orange';
			queryAjaxAPI('torrentgroup', { id: groupId }).then(torrentGroup => fetchBandcampDetails(torrentGroup).then(function(bcRelease) {
				const updateWorkers = [ ];
				if (bcRelease.tags instanceof TagManager && GM_getValue('update_tags', true) && bcRelease.tags.length > 0) {
					const releaseTags = Array.from(document.body.querySelectorAll('div.box_tags ul > li'), function(li) {
						const tag = { name: li.querySelector(':scope > a'), id: li.querySelector('span.remove_tag > a') };
						if (tag.name != null) tag.name = tag.name.textContent.trim();
						if (tag.id != null) tag.id = parseInt(new URLSearchParams(tag.id.search).get('tagid'));
						return tag.name && tag.id ? tag : null;
					}).filter(Boolean);
					let bcTags = [ ];
					if (torrentGroup.group.musicInfo) for (let importance of Object.keys(torrentGroup.group.musicInfo))
						if (Array.isArray(torrentGroup.group.musicInfo[importance]))
							Array.prototype.push.apply(bcTags, torrentGroup.group.musicInfo[importance].map(artist => artist.name));
					if (Array.isArray(torrentGroup.torrents)) for (let torrent of torrentGroup.torrents) {
						if (!torrent.remasterRecordLabel) continue;
						const labels = torrent.remasterRecordLabel.split('/').map(label => label.trim());
						if (labels.length > 0) {
							Array.prototype.push.apply(bcTags, labels);
							Array.prototype.push.apply(bcTags, labels.map(function(label) {
								const bareLabel = label.replace(/(?:\s+(?:under license.+|Records|Recordings|(?:Ltd|Inc)\.?))+$/, '');
								if (bareLabel != label) return bareLabel;
							}).filter(Boolean));
						}
					}
					bcTags = new TagManager(...bcTags);
					bcTags = Array.from(bcRelease.tags).filter(tag => !bcTags.includes(tag));
					if (bcTags.length > 0 && (releaseTags.length <= 0 || !(Number(GM_getValue('preserve_tags', 0)) > 1)))
							updateWorkers.push(getVerifiedTags(bcTags, 3).then(function(verifiedBcTags) {
						if (verifiedBcTags.length <= 0) return false;
						let userAuth = document.body.querySelector('input[name="auth"][value]');
						if (userAuth != null) userAuth = userAuth.value; else throw 'Failed to capture user auth';
						const updateWorkers = [ ];
						const addTags = verifiedBcTags.filter(tag => !releaseTags.map(tag => tag.name).includes(tag));
						if (addTags.length > 0) Array.prototype.push.apply(updateWorkers, addTags.map(tag => localXHR('/torrents.php', { responseType: null }, new URLSearchParams({
							action: 'add_tag',
							groupid: torrentGroup.group.id,
							tagname: tag,
							auth: userAuth,
						}))));
						const deleteTags = releaseTags.filter(tag => !verifiedBcTags.includes(tag.name)).map(tag => tag.id);
						if (deleteTags.length > 0 && !(Number(GM_getValue('preserve_tags', 0)) > 0))
								Array.prototype.push.apply(updateWorkers, deleteTags.map(tagId => localXHR('/torrents.php?' + new URLSearchParams({
							action: 'delete_tag',
							groupid: torrentGroup.group.id,
							tagid: tagId,
							auth: userAuth,
						}), { responseType: null })));
						return updateWorkers.length > 0 ? Promise.all(updateWorkers.map(updateWorker =>
								updateWorker.then(responseCode => true, reason => reason))).then(function(results) {
							if (results.some(result => result === true)) return results;
							return Promise.reject(`All of ${results.length} tag update workers failed (see browser console for more details)`);
						}) : false;
					}));
				}
				const rehostWorker = bcRelease.image && GM_getValue('update_image', true) ?
					imageHostHelper.then(ihh => ihh.rehostImageLinks([bcRelease.image])
						.then(ihh.singleImageGetter)).catch(reason => bcRelease.image) : Promise.resolve(null);
				if (ajaxApiKey) {
					let origBody = document.createElement('TEXTAREA');
					origBody.innerHTML = torrentGroup.group.bbBody;
					const body = importToBody(bcRelease, (origBody = origBody.textContent)), formData = new FormData;
					updateWorkers.push(rehostWorker.then(function(rehostedImageUrl) {
						const updateImage = rehostedImageUrl != null && (!torrentGroup.group.wikiImage || !GM_getValue('preserve_image', false))
							&& rehostedImageUrl != torrentGroup.group.wikiImage;
						if (updateImage || GM_getValue('update_description', true) && body != origBody.trim()) {
							if (updateImage) formData.set('image', rehostedImageUrl);
							if (GM_getValue('update_description', true) && body != origBody) formData.set('body', body);
							formData.set('summary', 'Additional description/cover image import from Bandcamp');
							return queryAjaxAPI('groupedit', { id: torrentGroup.group.id }, formData).then(function(response) {
								console.log(response);
								return true;
							});
						} else return false;
					}));
				} else {
					updateWorkers.push(localXHR('/torrents.php?' + new URLSearchParams({
						action: 'editgroup',
						groupid: torrentGroup.group.id,
					})).then(function(document) {
						const editForm = document.querySelector('form.edit_form');
						if (editForm == null) throw 'Edit form not exists';
						const formData = new FormData(editForm);
						const image = editForm.elements.namedItem('image').value, origBody = editForm.elements.namedItem('body').value;
						const body = importToBody(bcRelease, origBody);
						return rehostWorker.then(function(resolvedImageUrl) {
							const updateImage = resolvedImageUrl != null && (!image || !GM_getValue('preserve_image', false))
								&& resolvedImageUrl != image;
							if (updateImage || GM_getValue('update_description', true) && body != origBody.trim()) {
								if (updateImage) formData.set('image', resolved[1]);
								if (GM_getValue('update_description', true) && body != origBody) formData.set('body', body);
								formData.set('summary', 'Additional description/cover image import from Bandcamp');
								return localXHR('/torrents.php', { responseType: null }, formData).then(responseCode => true);
							} else return false;
						});
					}));
					if (document.domain == 'redacted.ch' && !(GM_getValue('red_nag_shown', 0) >= 3)) {
						const cpLink = new URL('/user.php?action=edit#api_key_settings', document.location.origin);
						let userId = document.body.querySelector('#userinfo_username a.username');
						if (userId != null) userId = parseInt(new URLSearchParams(userId.search).get('id'));
						if (userId > 0) cpLink.searchParams.set('userid', userId);
						alert('Please consider generating your personal API token (' + cpLink.href + ')\nSet up as "redacted_api_key" script storage entry');
						GM_setValue('red_nag_shown', GM_getValue('red_nag_shown', 0) + 1 || 1);
						// updateWorkers.push(localXHR('/user.php?' + URLSearchParams({ action: 'edit', userid: userId })).then(function(document) {
						// 	const form = document.body.querySelector('form#userform');
						// 	if (form == null) throw 'User form not found';
						// 	const formData = new FormData(form), newApiKey = formData.get('new_api_key');
						// 	if (newApiKey) formData.set('confirmapikey', 'on'); else throw 'API key not exist';
						// 	formData.set('api_torrents_scope', 'on');
						// 	for (let name of ['api_user_scope', 'api_requests_scope', 'api_forums_scope', 'api_wiki_scope']) formData.delete(name);
						// 	return localXHR('/user.php', { responseType: null }, formData).then(statusCode => newApiKey);
						// }).then(function(newApiKey) {
						// 	GM_setValue('redacted_api_key', newApiKey);
						// 	alert('Your personal API key [' + newApiKey + '] was successfulloy created and saved');
						// 	return false;
						// }));
					}
				}
				if (updateWorkers.length > 0) return Promise.all(updateWorkers.map(updateWorker =>
						updateWorker.then(response => Boolean(response), function(reason) {
					console.warn('Update worker failed with reason ' + reason);
					return reason;
				}))).then(function(results) {
					if (results.filter(Boolean).length > 0 && !results.some(result => result === true))
						return Promise.reject(`All of ${results.length} update workers failed (see browser console for more details)`);
					if (results.some(result => result === true)) return (document.location.reload(), true);
				});
			})).catch(reason => { if (!['Cancelled'].includes(reason)) alert(reason) }).then(status => {
				this.style.color = status ? 'springgreen' : null;
				this.disabled = false;
			});
			return false;
		};
		linkBox.append(' ', a);
 
		if (urlParams.has('presearch-bandcamp')) matchingResultsCount(groupId).then(function(matchedCount) {
			a.style.fontWeight = 'bold';
			a.title += `\n\n${matchedCount} possibly matching release(s)`;
		}, reason => { a.style.color = 'gray' });
		break;
	}
	case '/upload.php':
		if (urlParams.has('groupid')) break;
	case '/requests.php': {
		function hasStyleSheet(name) {
			if (name) name = name.toLowerCase(); else throw 'Invalid argument';
			const hrefRx = new RegExp('\\/' + name + '\\b', 'i');
			if (document.styleSheets) for (let styleSheet of document.styleSheets)
				if (styleSheet.title && styleSheet.title.toLowerCase() == name) return true;
					else if (styleSheet.href && hrefRx.test(styleSheet.href)) return true;
			return false;
		}
		function checkFields() {
			const visible = ['0', 'Music'].includes(categories.value) && title.textLength > 0;
			if (container.hidden != !visible) container.hidden = !visible;
		}
 
		const categories = document.getElementById('categories');
		if (categories == null) throw 'Categories select not found';
		const form = document.getElementById('upload_table') || document.getElementById('request_form');
		if (form == null) throw 'Main form not found';
		let title = form.elements.namedItem('title');
		if (title != null) title.addEventListener('input', checkFields); else throw 'Title select not found';
		const dynaForm = document.getElementById('dynamic_form');
		if (dynaForm != null) new MutationObserver(function(ml, mo) {
			for (let mutation of ml) if (mutation.addedNodes.length > 0) {
				if (title != null) title.removeEventListener('input', checkFields);
				if ((title = document.getElementById('title')) != null) title.addEventListener('input', checkFields);
					else throw 'Assertion failed: title input not found!';
				container.hidden = true;
			}
		}).observe(dynaForm, { childList: true });
		const isLightTheme = ['postmod', 'shiro', 'layer_cake', 'proton', 'red_light', '2iUn3'].some(hasStyleSheet);
		if (isLightTheme) console.log('Light Gazelle theme detected');
		const isDarkTheme = ['kuro', 'minimal', 'red_dark', 'Vinyl'].some(hasStyleSheet);
		if (isDarkTheme) console.log('Dark Gazelle theme detected');
		const container = document.createElement('DIV');
		container.style = 'position: fixed; top: 64pt; right: 10pt; padding: 5pt; border-radius: 50%; z-index: 999;';
		container.style.backgroundColor = `#${isDarkTheme ? '2f4f4f' : 'b8860b'}80`;
		const bcButton = document.createElement('BUTTON'), img = document.createElement('IMG');
		bcButton.id = 'import-from-bandcamp';
		bcButton.style = `
padding: 10px; color: white; background-color: white; cursor: pointer;
border: none; border-radius: 50%; transition: background-color 200ms;
`;
		bcButton.dataset.backgroundColor = bcButton.style.backgroundColor;
		bcButton.setDisabled = function(disabled = true) {
			this.disabled = disabled;
			this.style.opacity = disabled ? 0.5 : 1;
			this.style.cursor = disabled ? 'not-allowed' : 'pointer';
		};
		bcButton.onclick = function(evt) {
			this.setDisabled(true);
			this.style.backgroundColor = 'red';
			const torrentGroup = { group: {
				name: title.value,
				musicInfo: { },
				releaseType: parseInt(form.elements.namedItem('releasetype').value),
				year: parseInt(form.elements.namedItem('year').value),
			} };
			for (let artist of form.querySelectorAll('input[name="artists[]"]')) {
				const importance = ['artists', 'with', 'composers', 'conductor', 'dj', 'remixedby', 'producer']
					[parseInt(artist.nextElementSibling.value) - 1];
				if (!importance || !(artist = artist.value.trim())) continue;
				if (!(importance in torrentGroup.group.musicInfo)) torrentGroup.group.musicInfo[importance] = [ ];
				torrentGroup.group.musicInfo[importance].push({ name: artist });
			}
			const remasterYear = parseInt(form.elements.namedItem('remaster_year').value);
			if (remasterYear > 0) torrentGroup.torrents = [{ remasterYear: remasterYear }];
			fetchBandcampDetails(torrentGroup).then(function(bcRelease) {
				const tags = form.elements.namedItem('tags'), image = form.elements.namedItem('image'),
							description = form.elements.namedItem('album_desc') || form.elements.namedItem('description');
				if (tags != null && bcRelease.tags instanceof TagManager && bcRelease.tags.length > 0 && GM_getValue('update_tags', true)
						&& (!tags.value || !(Number(GM_getValue('preserve_tags', 0)) > 1))) {
					let bcTags = Array.from(form.querySelectorAll('input[name="artists[]"]'), input => input.value.trim()).filter(Boolean);
					let labels = form.elements.namedItem('remaster_record_label') || form.elements.namedItem('record_label');
					if (labels != null && (labels = labels.value.trim().split('/').map(label => label.trim())).length > 0) {
						Array.prototype.push.apply(bcTags, labels);
						Array.prototype.push.apply(bcTags, labels.map(function(label) {
							const bareLabel = label.replace(/(?:\s+(?:under license.+|Records|Recordings|(?:Ltd|Inc)\.?))+$/, '');
							if (bareLabel != label) return bareLabel;
						}).filter(Boolean));
					}
					bcTags = new TagManager(...bcTags);
					bcTags = Array.from(bcRelease.tags).filter(tag => !bcTags.includes(tag));
					getVerifiedTags(bcTags).then(function(bcVerifiedTags) {
						if (bcVerifiedTags.length <= 0) return;
						if (Number(GM_getValue('preserve_tags', 0)) > 0) {
							const mergedTags = new TagManager(tags.value, ...bcVerifiedTags);
							tags.value = mergedTags.toString();
						} else tags.value = bcVerifiedTags.join(', ');
					});
				}
				if (image != null && bcRelease.image && GM_getValue('update_image', true) && (!image.value || !GM_getValue('preserve_image', false))) {
					image.value = bcRelease.image;
					imageHostHelper.then(ihh => { ihh.rehostImageLinks([bcRelease.image]).then(ihh.singleImageGetter).then(rehostedUrl =>
						{ image.value = rehostedUrl }) });
				}
				if (description != null && GM_getValue('update_description', true)) {
					const body = importToBody(bcRelease, description.value);
					if (body != description.value) description.value = body;
				}
			}, reason => { if (!['Cancelled'].includes(reason)) alert(reason) }).then(() => {
				this.style.backgroundColor = this.dataset.backgroundColor;
				this.setDisabled(false);
			});
		};
		bcButton.onmouseenter = bcButton.onmouseleave = function(evt) {
			if (evt.relatedTarget == evt.currentTarget || evt.currentTarget.disabled) return false;
			evt.currentTarget.style.backgroundColor = evt.type == 'mouseenter' ? 'orange'
				: evt.currentTarget.dataset.backgroundColor || null;
		};
		bcButton.title = 'Import description, cover image and tags from Bandcamp';
		img.src = 'data:image/png;base64,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' // https://s4.bcbits.com/img/favicon/apple-touch-icon.png
		img.width = 32;
		bcButton.append(img);
		container.append(bcButton);
		checkFields();
		document.body.append(container);
		break;
	}
}