Greasy Fork

Greasy Fork is available in English.

[RED] Similar CD Detector

Simple script for testing CD releases for duplicity

当前为 2024-01-20 提交的版本,查看 最新版本

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Greasemonkey 油猴子Violentmonkey 暴力猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Violentmonkey 暴力猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Userscripts ,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name         [RED] Similar CD Detector
// @namespace    http://greasyfork.icu/users/321857-anakunda
// @version      1.08
// @description  Simple script for testing CD releases for duplicity
// @match        https://redacted.ch/torrents.php?id=*
// @match        https://redacted.ch/torrents.php?page=*&id=*
// @run-at       document-end
// @author       Anakunda
// @license      GPL-3.0-or-later
// @grant        GM_registerMenuCommand
// @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
// ==/UserScript==

{

'use strict';

function getTorrentId(tr) {
	if (!(tr instanceof HTMLElement)) throw 'Invalid argument';
	if ((tr = tr.querySelector('a.button_pl')) != null
			&& (tr = parseInt(new URLSearchParams(tr.search).get('torrentid'))) > 0) return tr;
	throw 'Failed to get torrent id';
}

const dupePrecheckInLinkbox = false; // set to true to have own rip dupe precheck in group page linkbox
const progressivePeaksComparison = true; // progressive method tries to de-round track peaks expressed in %
const maxRemarks = 60, allowReports = true, matchInAnyOrder = true;
const sessionsCache = new Map, getTorrentIds = (...trs) => trs.map(getTorrentId);
let selected = null, sessionsSessionCache;
// const rxStackedLogReducer = /^[\S\s]*(?:\r?\n)+(?=(?:Exact Audio Copy V|X Lossless Decoder version\s+|CUERipper v|EZ CD Audio Converter\s+)\d+\b)/;
// const stackedLogReducer = logFile => rxStackedLogReducer.test(logFile) ?
// 	logFile.replace(rxStackedLogReducer, '') : logFile;
const msf = 75, preGap = 2 * msf, msfTime = /(?:(\d+):)?(\d+):(\d+)[\.\:](\d+)/.source;
const msfToSector = time => Array.isArray(time) || (time = new RegExp('^\\s*' + msfTime + '\\s*$').exec(time)) != null ?
	(((time[1] ? parseInt(time[1]) : 0) * 60 + parseInt(time[2])) * 60 + parseInt(time[3])) * msf + parseInt(time[4]) : NaN;
const rxRangeRip = /^(?:Selected range|Выбранный диапазон|Âûáðàííûé äèàïàçîí|已选择范围|選択された範囲|Gewählter Bereich|Intervallo selezionato|Geselecteerd bereik|Utvalt område|Seleccionar gama|Избран диапазон|Wybrany zakres|Izabrani opseg|Vybraný rozsah)(?:[^\S\r\n]+\((?:Sectors|Секторы|扇区|Sektoren|Settori|Sektorer|Sectores|Сектори|Sektora|Sektory)[^\S\r\n]+(\d+)[^\S\r\n]*-[^\S\r\n]*(\d+)\))?$/m;
const sessionHeader = '(?:' + [
	'(?:EAC|XLD) (?:extraction logfile from |Auslese-Logdatei vom |extraheringsloggfil från |uitlezen log bestand van |log súbor extrakcie z |抓取日志文件从)',
	'File di log (?:EAC|XLD) per l\'estrazione del ', 'Archivo Log de extracciones desde ',
	'Отчёт (?:EAC|XLD) об извлечении, выполненном ', 'Отчет на (?:EAC|XLD) за извличане, извършено на ',
	'Protokol extrakce (?:EAC|XLD) z ', 'Sprawozdanie ze zgrywania programem (?:EAC|XLD) z ',
	'(?:EAC|XLD)-ov fajl dnevnika ekstrakcije iz ',
	'(?:Log created by: whipper|EZ CD Audio Converter) .+(?:\\r?\\n)+Log creation date: ',
	'morituri extraction logfile from ', 'Rip .+ Audio Extraction Log',
].join('|') + ')';
const rxTrackExtractor = /^(?:(?:(?:Track|Трек|Òðåê|音轨|Traccia|Spår|Pista|Трак|Utwór|Stopa)[^\S\r\n]+\d+\b.*|Track \d+ saved to\b.+)$(?:\r?\n^(?:[^\S\r\n]+.*)?$)*| +\d+:$\r?\n^ {4,}Filename:.+$(?:\r?\n^(?: {4,}.*)?$)*)/gm;

function getTocEntries(session) {
	if (!session) return null;
	const tocParsers = [
		'^\\s+' + ['\\d+', msfTime, msfTime, '\\d+', '\\d+'] // EAC / XLD
			.map(pattern => '(' + pattern + ')').join('\\s+\\|\\s+') + '\\s*$',
		'^\\s+\[X\]\\s+' + ['\\d+', msfTime, msfTime, '\\d+', '\\d+'] // EZ CD
			.map(pattern => '(' + pattern + ')').join('\\s+') + '\\b',
		// whipper
		'^ +(\\d+): *' + [['Start', msfTime], ['Length', msfTime], ['Start sector', '\\d+'], ['End sector', '\\d+']]
			.map(([label, capture]) => `\\r?\\n {4,}${label}: *(${capture})\\b *`).join(''),
		// Rip
		'^\\s+' + ['(\\d+)', '(' + msfTime + ')', '(?:(?:\\d+):)?\\d+:\\d+[\\.\\:]\\d+', '(' + msfTime + ')', '(\\d+)', '(\\d+)', '\\d+']
			.join('\\s+\\|\\s+') + '\\s*$',
	];
	let tocEntries = tocParsers.reduce((m, rx) => m || session.match(new RegExp(rx, 'gm')), null);
	if (tocEntries == null || (tocEntries = tocEntries.map(function(tocEntry, trackNdx) {
		if ((tocEntry = tocParsers.reduce((m, rx) => m || new RegExp(rx).exec(tocEntry), null)) == null)
			throw `assertion failed: track ${trackNdx + 1} ToC entry invalid format`;
		const [startSector, endSector] = [12, 13].map(index => parseInt(tocEntry[index]));
		console.assert(msfToSector(tocEntry[2]) == startSector && msfToSector(tocEntry[7]) == endSector + 1 - startSector
			&& endSector >= startSector, 'TOC table entry validation failed:', tocEntry);
		return { trackNumber: parseInt(tocEntry[1]), startSector: startSector, endSector: endSector };
	})).length <= 0) return null;
	if (!tocEntries.every((tocEntry, trackNdx) => tocEntry.trackNumber == trackNdx + 1)) {
		tocEntries = Object.assign.apply({ }, tocEntries.map(tocEntry => ({ [tocEntry.trackNumber]: tocEntry })));
		tocEntries = Object.keys(tocEntries).sort((a, b) => parseInt(a) - parseInt(b)).map(key => tocEntries[key]);
	}
	console.assert(tocEntries.every((tocEntry, trackNdx, tocEntries) => tocEntry.trackNumber == trackNdx + 1
		&& tocEntry.endSector >= tocEntry.startSector && (trackNdx <= 0 || tocEntry.startSector > tocEntries[trackNdx - 1].endSector)),
		'TOC table structure validation failed:', tocEntries);
	return tocEntries;
}

function getUniqueSessions(logFiles, detectCombinedLogs = true) {
	logFiles = Array.prototype.map.call(logFiles, function(logFile) {
		while (logFile.startsWith('\uFEFF')) logFile = logFile.slice(1);
		return logFile;
	});
	const rxRipperSignatures = '(?:(?:' + [
		'Exact Audio Copy V', 'X Lossless Decoder version ', 'CUERipper v',
		'EZ CD Audio Converter ', 'Log created by: whipper ', 'morituri version ', 'Rip ',
	].join('|') + ')\\d+)';
	if (!detectCombinedLogs) {
		const rxStackedLog = new RegExp('^[\\S\\s]*(?:\\r?\\n)+(?=' + rxRipperSignatures + ')');
		logFiles = logFiles.map(logFile => rxStackedLog.test(logFile) ? logFile.replace(rxStackedLog, '') : logFile)
			.filter(RegExp.prototype.test.bind(new RegExp('^(?:' + rxRipperSignatures + '|' + sessionHeader + ')')));
		return logFiles.length > 0 ? logFiles : null;
	} else if ((logFiles = logFiles.map(function(logFile) {
		let rxSessionsIndexer = new RegExp('^' + rxRipperSignatures, 'gm'), indexes = [ ], match;
		while ((match = rxSessionsIndexer.exec(logFile)) != null) indexes.push(match.index);
		if (indexes.length <= 0) {
			rxSessionsIndexer = new RegExp('^' + sessionHeader, 'gm');
			while ((match = rxSessionsIndexer.exec(logFile)) != null) indexes.push(match.index);
		}
		return (indexes = indexes.map((index, ndx, arr) => logFile.slice(index, arr[ndx + 1])).filter(function(logFile) {
			const rr = rxRangeRip.exec(logFile);
			if (rr == null) return true;
			// Ditch HTOA logs
			const tocEntries = getTocEntries(logFile);
			return tocEntries == null || parseInt(rr[1]) != 0 || parseInt(rr[2]) + 1 != tocEntries[0].startSector;
		})).length > 0 ? indexes : null;
	}).filter(Boolean)).length <= 0) return null;
	const sessions = new Map;
	for (const logFile of logFiles) for (const session of logFile) {
		let uniqueKey = getTocEntries(session), title;
		if (uniqueKey != null) uniqueKey = [uniqueKey[0].startSector].concat(uniqueKey.map(tocEntry =>
			tocEntry.endSector + 1)).map(offset => offset.toString(32).padStart(4, '0')).join(''); else continue;
		if ((title = new RegExp('^' + sessionHeader + '(.+)$(?:\\r?\\n)+^(.+ [\\/\\-] .+)$', 'm').exec(session)) != null)
			title = title[2];
		else if ((title = /^ +Release: *$\r?\n^ +Artist: *(.+)$\r?\n^ +Title: *(.+)$/m.exec(session)) != null)
			title = title[1] + ' / ' + title[2]; // Whipper?
		else if ((title = /^Compact Disc Information\r?\n=+\r?\nName: *(.+)$/m.exec(session)) != null)
			title = title[1]; // Rip
		if (title != null) uniqueKey += '/' + title.replace(/\s+/g, '').toLowerCase();
		sessions.set(uniqueKey, session);
	}
	//console.info('Unique keys:', Array.from(sessions.keys()));
	return sessions.size > 0 ? Array.from(sessions.values()) : null;
}

function getSessions(torrentId) {
	if (Array.isArray(torrentId) && torrentId.every(e => typeof e == 'string')) return Promise.resolve(torrentId);
	else if (typeof torrentId == 'string' && torrentId > 0) torrentId = parseInt(torrentId);
	if (!(torrentId > 0)) throw 'Invalid argument';
	if (sessionsCache.has(torrentId)) return sessionsCache.get(torrentId);
	if (!sessionsSessionCache && 'ripSessionsCache' in sessionStorage) try {
		sessionsSessionCache = JSON.parse(sessionStorage.getItem('ripSessionsCache'));
	} catch(e) {
		console.warn(e);
		sessionStorage.removeItem('ripSessionsCache');
		sessionsSessionCache = undefined;
	}
	if (sessionsSessionCache && torrentId in sessionsSessionCache)
		return Promise.resolve(sessionsSessionCache[torrentId]);
	// let request = queryAjaxAPICached('torrent', { id: torrentId }).then(({torrent}) => torrent.logCount > 0 ?
	// 		Promise.all(torrent.ripLogIds.map(ripLogId => queryAjaxAPICached('riplog', { id: torrentId, logid: ripLogId })
	// 			.then(response => response))) : Promise.reject('No logfiles attached'));
	let request = localXHR('/torrents.php?' + new URLSearchParams({ action: 'loglist', torrentid: torrentId }));
	request = request.then(document => Array.from(document.body.querySelectorAll(':scope > blockquote > pre:first-child'),
		pre => pre.textContent));
	sessionsCache.set(torrentId, (request = request.then(getUniqueSessions).then(function(sessions) {
		if (sessions == null) return Promise.reject('No valid logfiles attached'); else try {
			if (!sessionsSessionCache) sessionsSessionCache = { };
			sessionsSessionCache[torrentId] = sessions;
			sessionStorage.setItem('ripSessionsCache', JSON.stringify(sessionsSessionCache));
		} catch(e) { console.warn(e) }
		return sessions;
	})));
	return request;
}

function testSimilarity(...torrentIds) {
	if (torrentIds.length < 2 || !torrentIds.every(Boolean)) return Promise.reject('Invalid argument');
	return Promise.all(torrentIds.map(getSessions)).then(function(sessions) {
		function compareMedium(...indexes) {
			function addTrackRemark(trackNdx, remark) {
				if (!(trackNdx in volRemarks)) volRemarks[trackNdx] = [ ];
				volRemarks[trackNdx].push(remark);
			}
			function processTrackValues(patterns, ...callbacks) {
				if (!Array.isArray(patterns) || patterns.length <= 0 || typeof callbacks[patterns.length] != 'function') return;
				const rxs = patterns.map(pattern => new RegExp('^[^\\S\\r\\n]+' + pattern + '\\s*$', 'm'));
				const values = trackRecords.map(trackRecords => trackRecords != null ? trackRecords.map(function(trackRecord, trackNdx) {
					trackRecord = rxs.map(rx => rx.exec(trackRecord));
					for (let index = 0; index < trackRecord.length; ++index) if (trackRecord[index] != null)
						return typeof callbacks[index] == 'function' ? callbacks[index](trackRecord[index]) : trackRecord[index];
				}) : [ ]);
				for (let trackNdx = 0; trackNdx < Math.max(values[0].length, values[1].length); ++trackNdx)
					callbacks[patterns.length](values[0][trackNdx], values[1][trackNdx], trackNdx);
			}
			function getLayoutType(tocEntries) {
				for (let index = 0; index < tocEntries.length - 1; ++index) {
					const gap = tocEntries[index + 1].startSector - tocEntries[index].endSector - 1;
					if (gap != 0) return (gap == 11400 ? tocEntries.length - index : 0) - 1;
				}
				return 0;
			}

			console.assert(indexes.length > 0, indexes);
			if (indexes.length <= 0) throw 'No indexes provided'; else if (indexes.length < 2) indexes[1] = indexes[0];
			const isRangeRip = sessions.map((sessions, index) => rxRangeRip.test(sessions[indexes[index]]));
			const remarks = [ ], volRemarks = [ ];
			let volDescriptor = indexes[0] + 1;
			if (indexes[0] != indexes[1]) volDescriptor += '↔' + (indexes[1] + 1);
			if (isRangeRip.some(Boolean))
				remarks.push(`disc ${volDescriptor} having at least one release as range rip, skipping peaks comparison`);
			const tocEntries = sessions.map((sessions, index) => getTocEntries(sessions[indexes[index]]));
			if (tocEntries.some(toc => toc == null)) throw `disc ${volDescriptor} ToC not found for at least one release`;
			for (const _tocEntries of tocEntries) {
				let layoutType = getLayoutType(_tocEntries);
				if (layoutType < 0) remarks.push(`disc ${volDescriptor} unknown layout type`);
				else while (layoutType-- > 0) _tocEntries.pop(); // ditch data tracks for CD with data track(s)
			}
			if (tocEntries[0].length != tocEntries[1].length) throw `disc ${volDescriptor} ToC lengths mismatch`;
			const trackRecords = sessions.map((sessions, index) => sessions[indexes[index]].match(rxTrackExtractor));
			if (trackRecords.some((trackRecords, ndx) => !isRangeRip[ndx] && trackRecords == null))
				throw `disc ${volDescriptor} no track records could be extracted for at least one rip`;
			else if (!isRangeRip.some(Boolean) && trackRecords[0].length != trackRecords[1].length)
				throw `disc ${volDescriptor} track records count mismatch (${trackRecords[0].length} <> ${trackRecords[1].length})`;
			const htoaCount = tocEntries.filter(tocEntries => tocEntries[0].startSector > 150).length;
			if (htoaCount > 0) remarks.push(`disc ${volDescriptor} ${htoaCount < tocEntries.length ? 'one rip' : 'both rips'} possibly containing leading hidden track (ToC starting at non-zero offset)`);
			// Compare TOCs
			const tocThresholds = [
				{ maxShift: 50, maxDrift: 10 }, // WiKi standard
				// { maxShift: 40, maxDrift: 40 }, // staff standard
			], maxPeakDelta = 0.001;
			const tocShifts = tocEntries[0].map((_, trackNdx) => tocEntries[1][trackNdx].endSector - tocEntries[0][trackNdx].endSector);
			const tocShiftOf = shifts => shifts.length > 0 ? Math.max(...shifts.map(Math.abs)) : 0;
			const tocDriftOf = shifts => shifts.length > 0 ? Math.max(...shifts) - Math.min(...shifts) : 0;
			let shiftsPool = tocShifts.length > 1 ? tocShiftOf(tocShifts.slice(0, -1)) : undefined;
			shiftsPool = tocShifts.find(trackShift => Math.abs(trackShift) == shiftsPool) || 0;
			const hasPostGap = [shiftsPool + 150, shiftsPool - 150].includes(tocShifts[tocShifts.length - 1]); // ??
			shiftsPool = !hasPostGap ? tocShifts : tocShifts.slice(0, -1);
			const tocShift = tocShiftOf(shiftsPool), tocDrift = tocDriftOf(shiftsPool);
			console.assert(tocDrift >= 0);
			let getTid = index => torrentIds[index] > 0 ? 'tid' + torrentIds[index] : '<user input>';
			const label = `ToC comparison for ${getTid(0)} and ${getTid(1)} disc ${volDescriptor}`;
			console.group(label);
			getTid = index => torrentIds[index] > 0 ? torrentIds[index] : '[UI]';
			console.table(tocEntries[0].map((_, trackNdx) => ({
				['track#']: trackNdx + 1,
				['start' + getTid(0)]: tocEntries[0][trackNdx].startSector,
				['end' + getTid(0)]: tocEntries[0][trackNdx].endSector,
				['length' + getTid(0)]: tocEntries[0][trackNdx].endSector + 1 - tocEntries[0][trackNdx].startSector,
				['start' + getTid(1)]: tocEntries[1][trackNdx].startSector,
				['end' + getTid(1)]: tocEntries[1][trackNdx].endSector,
				['length' + getTid(1)]: tocEntries[1][trackNdx].endSector + 1 - tocEntries[1][trackNdx].startSector,
				['tocShift']: tocShifts[trackNdx],
			})));
			console.info(`ToC shift = ${tocShift}`);
			console.info(`ToC drift = ${Math.max(...tocShifts)} - ${Math.min(...tocShifts)} = ${Math.max(...tocShifts) - Math.min(...tocShifts)}`);
			console.groupEnd(label);
			if (tocThresholds.length > 0) (function tryIndex(reason, index = 0) {
				if (index < tocThresholds.length) try {
					if (!Object.keys(tocThresholds[index]).every(key => tocThresholds[index][key] > 0)) throw 'Invalid parameter';
					if (tocShift >= tocThresholds[index].maxShift)
						throw `disc ${volDescriptor} ToC shift not below ${tocThresholds[index].maxShift} sectors`;
					if (tocDrift >= tocThresholds[index].maxDrift)
						throw `disc ${volDescriptor} ToC drift not below ${tocThresholds[index].maxDrift} sectors`;
				} catch(reason) { tryIndex(reason, index + 1) } else throw reason || 'unknown reason';
			})();
			if (tocDrift > 0) remarks.push(`Disc ${volDescriptor} shifted ToCs by ${tocShift} sectors with ${tocDrift} sectors drift`);
			else if (tocShifts[0] != 0) remarks.push(`Disc ${volDescriptor} shifted ToCs by ${tocShift} sectors`);
			if (hasPostGap) remarks.push(`Disc ${volDescriptor} with post-gap`);
			for (let trackNdx = 0; trackNdx < tocEntries[0].length; ++trackNdx) { // just informational
				const mismatches = [ ];
				if (tocEntries[0][trackNdx].startSector != tocEntries[1][trackNdx].startSector) mismatches.push('offsets');
				if (tocEntries[0][trackNdx].endSector - tocEntries[0][trackNdx].startSector
						!= tocEntries[1][trackNdx].endSector - tocEntries[1][trackNdx].startSector) mismatches.push('lengths');
				if (mismatches.length > 0) addTrackRemark(trackNdx, mismatches.join(' and ') + ' mismatch');
			}
			// Compare pre-gaps - just informational
			if (!isRangeRip.some(Boolean)) processTrackValues([
				'(?:Pre-gap length|Длина предзазора|Äëèíà ïðåäçàçîðà|前间隙长度|Pausenlänge|Durata Pre-Gap|För-gap längd|Longitud Pre-gap|Дължина на предпразнина|Długość przerwy|Pre-gap dužina|[Dd]élka mezery|Dĺžka medzery pred stopou)\\s+' + msfTime, // 1270
				'(?:Pre-gap length)\\s*:\\s*' + msfTime,
			], msfToSector, msfToSector, function(preGap1, preGap2, trackNdx) {
				if ((preGap1 || 0) != (preGap2 || 0)) addTrackRemark(trackNdx, 'pre-gaps mismatch');
			});
			const identicalTracks = new Set, crc32Extractors = [
				'(?:(?:Copy|复制|Kopie|Copia|Kopiera|Copiar|Копиран) CRC|CRC (?:копии|êîïèè|kopii|kopije|kopie|kópie)|コピーCRC)\\s+([\\da-fA-F]{8})', // 1272
				'(?:CRC32 hash|Copy CRC)\\s*:\\s*([\\da-fA-F]{8})',
			], h2i = m => parseInt(m[1], 16);
			if (!isRangeRip.some(Boolean)) processTrackValues(crc32Extractors, h2i, h2i, function(checksum1, checksum2, trackNdx) {
				if (checksum1 != undefined && checksum2 != undefined && checksum1 == checksum2) identicalTracks.add(trackNdx);
			});
			// Compare peaks
			if (!isRangeRip.every(Boolean)) processTrackValues([
				'(?:Peak level|Пиковый уровень|Ïèêîâûé óðîâåíü|峰值电平|ピークレベル|Spitzenpegel|Pauze lengte|Livello di picco|Peak-nivå|Nivel Pico|Пиково ниво|Poziom wysterowania|Vršni nivo|[Šš]pičková úroveň)\\s+(\\d+(?:\\.\\d+)?)\\s*\\%', // 1217
				'(?:Peak(?: level)?)\\s*:\\s*(\\d+(?:\\.\\d+)?)',
			], m => [parseFloat(m[1]) * 10, true], m => [parseFloat(m[1]) * 1000, false], function(peak1, peak2, trackNdx) {
				if (peak1 == undefined && !isRangeRip[0] || peak2 == undefined && !isRangeRip[1])
					throw `disc ${volDescriptor} track ${trackNdx + 1} peak missing or invalid format`;
				if (isRangeRip.some(Boolean) || identicalTracks.has(trackNdx)) return;
				//const norm = [peak => peak[0], peak => Math.min(peak[1] ? Math.floor(peak[0]) + 0.748 : peak[0], 1000)];
				const norm = (progressivePeaksComparison ? [-0.031, 0.901] : [0]).map(offset =>
					peak => Math.max(Math.min(peak[1] ? Math.floor(peak[0]) + offset : peak[0], 1000)), 0);
				if (norm.every(fn => Math.abs(fn(peak1) - fn(peak2)) >= maxPeakDelta * 1000))
					throw `disc ${volDescriptor} track ${trackNdx + 1} peak difference above ${maxPeakDelta}`;
				else if (peak1[1] == peak2[1] && peak1[0] != peak2[0]) addTrackRemark(trackNdx, 'peak levels mismatch');
			});
			// Compare checksums - just informational
			if (!isRangeRip.every(Boolean)) processTrackValues(crc32Extractors, h2i, h2i, function(checksum1, checksum2, trackNdx) {
				if (checksum1 == undefined && !isRangeRip[0] || checksum2 == undefined && !isRangeRip[1])
					addTrackRemark(trackNdx, 'checksum missing or invalid format');
				if (isRangeRip.some(Boolean)) return;
				if (checksum1 != checksum2) addTrackRemark(trackNdx, 'checksums mismatch');
			});
			// Compare AR signatures - just informational
			if (!isRangeRip.every(Boolean)) for (let v = 2; v > 0; --v) processTrackValues([
				'.+?\\[([\\da-fA-F]{8})\\].+\\(AR v' + v + '\\)',
				'(?:AccurateRip v' + v + ' signature)\\s*:\\s*([\\da-fA-F]{8})',
			], m => parseInt(m[1], 16), m => parseInt(m[1], 16), function(hash1, hash2, trackNdx) {
				// if (hash1 == undefined && !isRangeRip[0] || hash2 == undefined && !isRangeRip[1])
				// 	addTrackRemark(trackNdx, 'AR v' + v + ' hash missing');
				if (isRangeRip.some(Boolean)) return;
				if (hash1 != hash2) addTrackRemark(trackNdx, 'AR v' + v + ' signatures mismatch');
			});
			for (let trackNdx of volRemarks.sort()) if (volRemarks[trackNdx])
				remarks.push(`Disc ${volDescriptor} track ${parseInt(trackNdx) + 1}: ${volRemarks[trackNdx].join(', ')}`);
			const rxTimestampExtractor = new RegExp('^' + sessionHeader + '(.+)$', 'm');
			const timeStamps = sessions.map((sessions, index) => rxTimestampExtractor.exec(sessions[indexes[index]]));
			if (timeStamps.every(Boolean) && timeStamps.map(timeStamp => timeStamp[0]).every((timeStamp, ndx, arr) => timeStamp == arr[0]))
				remarks.push(`Disc ${volDescriptor} ${identicalRip}`);
			return remarks;
		}

		if (sessions.some(lf1 => sessions.some(lf2 => lf1.length != lf2.length))) throw 'disc count mismatch';
		const identicalRip = 'originates in same ripping session';
		const isIdenticalRip = remarks => remarks.filter(remark => (remark || '').endsWith(identicalRip)).length
			>= Math.max(...sessions.map(sessions => sessions.length));
		let remarks = [ ];
		if (sessions.some(sessions => sessions.length > 1) && matchInAnyOrder) {
			const volumesMapping = new Map;
			outerLoop: for (let index1 = 0; index1 < sessions[0].length; ++index1) {
				for (let index2 = 0; index2 < sessions[1].length; ++index2) if (!volumesMapping.has(index2)) try {
					Array.prototype.push.apply(remarks, compareMedium(index1, index2));
					volumesMapping.set(index2, index1);
					continue outerLoop;
				} catch(e) { console.info(e) }
				break;
			}
			if (volumesMapping.size >= sessions[1].length) return isIdenticalRip(remarks) ? true : remarks;
			remarks = [ ];
		}
		for (let volumeNdx = 0; volumeNdx < sessions[0].length; ++volumeNdx)
			Array.prototype.push.apply(remarks, compareMedium(volumeNdx));
		return isIdenticalRip(remarks) ? true : remarks;
	});
}

function countSimilar(groupId) {
	if (groupId > 0) return queryAjaxAPI('torrentgroup', { id: groupId }).then(function({torrents}) {
		const torrentIds = torrents.filter(torrent => torrent.media == 'CD'
			&& torrent.format == 'FLAC' && torrent.encoding == 'Lossless' && torrent.hasLog).map(torrent => torrent.id);
		const compareWorkers = [ ];
		torrentIds.forEach(function(torrentId1, ndx1) {
			torrentIds.forEach(function(torrentId2, ndx2) {
				if (ndx2 > ndx1) compareWorkers.push(testSimilarity(torrentId1, torrentId2).then(remarks => true, reason => false));
			});
		});
		return Promise.all(compareWorkers).then(results => results.filter(Boolean).length);
	}); else throw 'Invalid argument';
}

for (let selector of [
	'table.torrent_table > tbody > tr.group div.group_info > strong > a:last-of-type',
	'table.torrent_table > tbody > tr.torrent div.group_info > strong > a:last-of-type',
	'table.torrent_table > tbody > tr.group div.group_info > a:last-of-type',
	'table.torrent_table > tbody > tr.torrent div.group_info > a:last-of-type',
]) for (let a of document.body.querySelectorAll(selector)) {
	a.onclick = function altClickHandler(evt) {
		if (!evt.altKey) return true;
		let groupId = new URLSearchParams(evt.currentTarget.search);
		if ((groupId = parseInt(groupId.get('id'))) > 0) countSimilar(groupId).then(count =>
			{ alert(count > 0 ? `Total ${count} CDs potentially duplicates` : 'No similar CDs found') }, alert);
		return false;
	};
	a.title = 'Use Alt + click to count considerable CD dupes in release group';
}

function getEditionTitle(elem) {
	while (elem != null && !elem.classList.contains('edition')) elem = elem.previousElementSibling;
	if (elem != null && (elem = elem.querySelector('td.edition_info > strong')) != null)
		return elem.textContent.trimRight().replace(/^[\s\-\−]+/, '').replace(/\s*\/\s*CD$/, '');
}

const torrents = Array.prototype.filter.call(document.body.querySelectorAll('table#torrent_details > tbody > tr.torrent_row'),
	tr => (tr = tr.querySelector('td > a')) != null && /\b(?:FLAC)\b.+\b(?:Lossless)\b.+\b(?:Log) \(\-?\d+\s*\%\)/.test(tr.textContent));
if (torrents.length > 0) {
	function findLog() {
		const dialog = document.createElement('DIALOG');
		dialog.innerHTML = `
<form method="dialog" style="padding: 1rem; background-color: darkslategray; color: white; display: flex; flex-flow: column nowrap; row-gap: 10pt;">
	<div name="cd-log-text">
		<div style="margin-bottom: 5pt;">Paste .LOG content (for multi disc albums paste all logs one after another)</div>
		<textarea rows="40" cols="80" spellcheck="false" wrap="off" style="font: 8pt monospace; padding: 5px; color: white; background-color: #152323;"></textarea>
	</div>
	<div name="cd-log-files">Or select file(s): <input type="file" accept=".log" multiple style="font-size: 9pt;" /></div>
	<div style="text-align: center; display: flex; flex-flow: row; justify-content: flex-start; column-gap: 10pt;"><input type="submit" value="Check for duplicity" style="margin: 0;" /><input type="button" name="close" value="Close" style="margin: 0;" /></div>
</form>
	`;
		dialog.style = 'position: fixed; top: 0; left: 0; margin: auto; max-width: 75%; max-height: 90%; box-shadow: 5px 5px 10px black; z-index: 99999;';
		dialog.onclose = evt => { document.body.removeChild(evt.currentTarget) };
		let form = dialog.firstElementChild;
		form.onsubmit = function(evt) {
			const logFilesAdaptor = logFiles => (logFiles = getUniqueSessions(logFiles, true)) != null ?
				Promise.resolve(logFiles) : Promise.reject('No valid input');
			logFilesAdaptor(Array.from((form = evt.currentTarget).querySelectorAll('[name="cd-log-text"] textarea'),
					textArea => textArea.value)).catch(reason => Promise.all(Array.prototype.concat.apply([ ],
						Array.from(form.querySelectorAll('[name="cd-log-files"] input[type="file"]'),
							input => Array.from(input.files, file => new Promise(function(resolve, reject) {
				const fr = new FileReader;
				fr.onload = evt => { resolve(evt.currentTarget.result) };
				fr.onerror = evt => { reject('File reading error') };
				fr.readAsText(file);
			}))))).then(logFilesAdaptor)).then(function(sessions) {
				Promise.all(torrents.map(torrent => testSimilarity(sessions, ...getTorrentIds(torrent)).then(remarks => ({
					torrent: torrent,
					remarks: remarks,
				}), reason => null))).then(function(results) {
					if ((results = results.filter(Boolean)).length > 0) {
						let message = 'This mastering is considered dupe to ' + getEditionTitle(results[0].torrent);
						if (results.length > 1) message += ` and ${results.length - 1} others`;
						if (results[0].remarks === true) message += '\n\nIdentical rips';
						else if (Array.isArray(results[0].remarks)) message += '\n\n' + results[0].remarks.join('\n');
						alert(message);
					} else alert('This mastering is unique within the release group');
				});
			}, alert);
		};
		form.elements.namedItem('close').onclick = evt => { dialog.close() };
		document.body.append(dialog);
		dialog.showModal();
	}

	const linkbox = document.body.querySelector('div.header > div.linkbox');
	if (dupePrecheckInLinkbox && linkbox != null) {
		const a = document.createElement('A');
		a.onclick = evt => (findLog(), false);
		a.href = '#';
		a.className = 'brackets';
		a.textContent = 'Check CD uniqueness';
		a.title = 'Verify if ripped CD is considered distinct edition within the release group';
		linkbox.append(' ', a);
	}
	GM_registerMenuCommand('CD rip duplicity precheck', findLog, 'c');
}
if (torrents.length < 2) return;

for (let tr of torrents) {
	let torrentId = /^torrent(\d+)$/.exec(tr.id);
	if (torrentId == null || !((torrentId = parseInt(torrentId[1])) > 0)) continue;
	const div = document.createElement('DIV');
	div.innerHTML = '<svg height="14" viewBox="0 0 24 24" fill="gray"><path d="M14.0612 4.7156l4.0067-.7788a.9998.9998 0 10-.3819-1.9629l-4.0264.7826a2.1374 2.1374 0 00-3.7068.7205l-4.0466.7865a.9998.9998 0 10.3819 1.9629l4.0221-.7818a2.1412 2.1412 0 003.751-.729zM7.1782 9.5765a.9997.9997 0 00-1.8115 0l-3.2725 7A.9977.9977 0 002 16.9998v.7275a4.2727 4.2727 0 008.5454 0v-.7275a.9977.9977 0 00-.0942-.4233zm-.9057 2.7846l1.7014 3.6387H4.5713zm.0005 7.6387a2.268 2.268 0 01-2.2454-2h4.4902a2.268 2.268 0 01-2.2448 2zM18.6558 7.5765a.9997.9997 0 00-1.8116 0l-3.273 7a.9977.9977 0 00-.0941.4233v.7275a4.2727 4.2727 0 008.5454 0l.0005-.726a.997.997 0 00-.0943-.4248zm-.9058 2.7841l1.7017 3.6392h-3.4032zm0 7.6392a2.268 2.268 0 01-2.2454-2h4.4903a2.268 2.268 0 01-2.2449 2z" /></svg>';
	div.style = 'float: right; margin-left: 5pt; margin-right: 5pt; padding: 0; visibility: visible; cursor: pointer;';
	div.className = 'compare-release';
	div.onclick = function(evt) {
		console.assert(evt.currentTarget instanceof HTMLElement);
		const setActive = (elem, active = true) => { elem.children[0].setAttribute('fill', active ? 'orange' : 'gray') };
		if (selected instanceof HTMLElement) {
			if (selected == evt.currentTarget) {
				selected = null;
				setActive(evt.currentTarget, false);
			} else {
				const target = evt.currentTarget;
				setActive(target, true);
				const trs = [selected.parentNode.parentNode, target.parentNode.parentNode];
				testSimilarity(...getTorrentIds(...trs)).then(function(remarks) {
					const permaLink = document.location.origin + '/torrents.php?torrentid=${torrentid}';
					if (remarks === true) {
						var message = 'Identical rips';
						var report = `Identical rip to [url=${permaLink}]\${editiontitle}[/url]`;
					} else {
						message = 'Releases may be duplicates (ToC shift/drift + peaks are too similar)';
						if (remarks.length > 0) message += '\n\n' + (maxRemarks > 0 && remarks.length > maxRemarks ?
							remarks.slice(0, maxRemarks - 1).join('\n') + '\n...' : remarks.join('\n'));
						const shorten = (index, sameStr) => report[index].length == 1 && report[index][0].startsWith('Disc 1') ?
							report[index][0].replace(/^Disc\s+\d+\s+/, '') : report[index].length > 0 ? report[index].join(', ') : sameStr;
						report = [remark => remark.includes('shifted'), remark => remark.includes('post-gap')].map(fn => remarks.filter(fn));
						report = `Same pressing as [url=${permaLink}]\${editiontitle}[/url] possible (${shorten(0, 'similar ToC(s)/peaks')}${shorten(1, '') ? ' with post-gap' : ''})`;
					}
					const getTorrentText = elem => (elem = elem.querySelector('a[href="#"][onclick]')) != null ? elem.textContent : undefined;
					const characteristics = trs.map(tr => [
						/* 0 */ /\b(?:(?:Pre|De)[\-\− ]?emphas|Pre-?gap\b|HTOA\b|Hidden\s+track|Clean|Censor)/i.test(getEditionTitle(tr)), // allowed to coexist
						/* 1 */ tr.querySelector('strong.tl_reported') != null,
						/* 2 */ (function(numberColumns) {
							console.assert(numberColumns.length == 4);
							return numberColumns.length >= 3 ? parseInt(numberColumns[2].textContent) : -1;
						})(tr.getElementsByClassName('number_column')),
						/* 3 */ Array.prototype.some.call(tr.querySelectorAll('strong.tl_notice'), strong => strong.textContent.trim() == 'Trumpable'),
						/* 4 */ (text => (text = /\bLog\s*\((\-?\d+)\%\)/.exec(text)) != null ?
							(text = parseInt(text[1])) >= 100 ? 100 : text > 0 ? 50 : 0 : NaN)(getTorrentText(tr)),
						/* 5 */ /\bCue\b/i.test(getTorrentText(tr)),
						/* 6 */ getTorrentId(tr),
					]);
					let userAuth = document.body.querySelector('input[name="auth"][value]');
					if (userAuth != null) userAuth = userAuth.value;
					if (!userAuth || characteristics.some(ch => ch[0] || ch[1])
							|| characteristics.filter(ch => ch[3]).length > 1) return alert(message);
					const indexByDelta = delta => delta > 0 ? 0 : delta < 0 ? 1 : -1;
					let trumpIndex = indexByDelta(Number(isNaN(characteristics[0][4])) - Number(isNaN(characteristics[1][4])));
					if (trumpIndex < 0) trumpIndex = indexByDelta(characteristics[1][4] - characteristics[0][4]);
					if (trumpIndex < 0) trumpIndex = indexByDelta(Number(characteristics[0][3]) - Number(characteristics[1][3]));
					if (trumpIndex < 0 && characteristics.every(ch => ch[4] >= 100))
						trumpIndex = indexByDelta(Number(characteristics[1][5]) - Number(characteristics[0][5]));
					let dupeIndex = trumpIndex < 0 ? indexByDelta(characteristics[0][6] - characteristics[1][6]) : -1;
					console.assert(trumpIndex < 0 != dupeIndex < 0);
					if (characteristics[1 - (trumpIndex < 0 ? dupeIndex : trumpIndex)][2] <= 0)
						return alert(message + '\n\nReporting not offered for lack of seeds');
					if (trumpIndex >= 0) {
						class ExtraInfo extends Array {
							constructor(torrentId) {
								super();
								if (torrentId > 0) torrentId = document.getElementById('release_' + torrentId); else return;
								if (torrentId != null) for (torrentId of torrentId.querySelectorAll(':scope > blockquote'))
									if ((torrentId = /^Trumpable For:\s+(.+)$/i.exec(torrentId.textContent.trim())) != null)
										Array.prototype.push.apply(this, torrentId[1].split(/\s*,\s*/));
							}
						}

						const extraInfo = new ExtraInfo(characteristics[trumpIndex][6]), trumpMappings = {
							lineage_trump: /\b(?:Lineage)\b/i,
							checksum_trump: /^(?:Bad\/No Checksum\(s\))$/i,
							tag_trump: /^(?:Bad Tags)$/i,
							folder_trump: /\b(?:Folder)\b/i,
							file_trump: /^(?:Bad File Names)$|\b(?:180)\b/i,
							pirate_trump: /\b(?:Pirate)\b/i,
						};
						var trumpType = 'trump';
						for (let type in trumpMappings) if (extraInfo.some(RegExp.prototype.test.bind(trumpMappings[type])))
							trumpType = type;
					}
					message += `\n\nProposed ${trumpIndex < 0 ? 'dupe' : trumpType.replace(/_/g, ' ')} report for ${getEditionTitle(trs[trumpIndex < 0 ? dupeIndex : trumpIndex])}`;
					if (!allowReports || trumpIndex >= 0 && (characteristics[trumpIndex][3] && trumpType == 'trump'
							|| characteristics.every(ch => ch[4] == 50))) return alert(message);
					if (confirm(message + `\n\nTake the report now?`)) localXHR('/reportsv2.php?action=takereport', { responseType: null }, new URLSearchParams({
						auth: userAuth,
						categoryid: 1,
						torrentid: characteristics[trumpIndex < 0 ? dupeIndex : trumpIndex][6],
						type: trumpIndex < 0 ? 'dupe' : trumpType,
						sitelink: permaLink.replace('${torrentid}', characteristics[1 - (trumpIndex < 0 ? dupeIndex : trumpIndex)][6]),
						extra: report.replace('${torrentid}', characteristics[1 - (trumpIndex < 0 ? dupeIndex : trumpIndex)][6])
							.replace('${editiontitle}', getEditionTitle(trs[1 - (trumpIndex < 0 ? dupeIndex : trumpIndex)])),
					})).then(status => { document.location.reload() }, alert);
				}).catch(reason => { alert('Releases not duplicates for the reason ' + reason) }).then(function() {
					for (let elem of [selected, target]) setActive(elem, false);
					selected = null;
				});
			}
		} else setActive(selected = evt.currentTarget, true);
	};
	div.title = 'Compare with different CD for similarity';
	const anchor = tr.querySelector('span.torrent_action_buttons');
	if (anchor != null) anchor.after(div);
}

function scanGroup(evt) {
	const compareWorkers = [ ];
	torrents.forEach(function(torrent1, ndx1) {
		torrents.forEach(function(torrent2, ndx2) {
			if (ndx2 > ndx1) compareWorkers.push(testSimilarity(...getTorrentIds(torrent1, torrent2))
				.then(remarks => [torrent1, torrent2], reason => 'distinct'));
		});
	});
	if (compareWorkers.length > 0) Promise.all(compareWorkers).then(function(results) {
		if ((results = results.filter(Array.isArray)).length > 0) try {
			results.forEach(function(sameTorrents, groupNdx) {
				const randColor = () => 0xD0 + Math.floor(Math.random() * (0xF8 - 0xD0));
				const color = ['#dff', '#ffd', '#fdd', '#dfd', '#ddf', '#fdf'][groupNdx]
					|| `rgb(${randColor()}, ${randColor()}, ${randColor()})`;
				for (let elem of sameTorrents) if ((elem = elem.querySelector('div.compare-release')) != null) {
					elem.style.padding = '2px';
					elem.style.border = '1px solid #808080';
					elem.style.borderRadius = '3px';
					elem.style.backgroundColor = color;
				}
			});
			alert('Similar CDs detected in these editions:\n\n' + results.map(sameTorrents =>
				'− ' + getEditionTitle(sameTorrents[0]) + '\n− ' + getEditionTitle(sameTorrents[1])).join('\n\n'));
		} catch (e) { alert(e) } else alert('No similar CDs detected');
	});
}

GM_registerMenuCommand('Find CD dupes', scanGroup, 'd');
const container = document.body.querySelector('table#torrent_details > tbody > tr.colhead_dark > td:first-of-type');
if (container == null) throw 'Torrent table header not found';
const span = document.createElement('SPAN');
span.className = 'brackets';
span.textContent = 'Find CD dupes';
span.style = 'margin-left: 5pt; margin-right: 5pt; float: right; cursor: pointer; font-size: 8pt;';
span.onclick = scanGroup;
container.append(span);

}