// ==UserScript==
// @name         Image Host Helper
// @namespace    https://greasyfork.org/users/321857-anakunda
// @version      1.085
// @description  Directly upload local / rehost remote images or galleries to whatever supported image host by dropping/pasting them to target field
// @icon         data:image/png;base64,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
// @author       Anakunda
// @copyright    2020, Anakunda (https://greasyfork.org/cs/users/321857-anakunda)
// @license      GPL-3.0-or-later
// @match        https://passthepopcorn.me/*
// @match        https://redacted.ch/*
// @match        https://orpheus.network/*
// @match        https://broadcasthe.net/*
// @match        https://notwhat.cd/*
// @match        https://dicmusic.club/*
// @match        https://*/torrents.php?id=*
// @match        https://*/artist.php?id=*
// @match        https://*/artist.php?action=edit&artistid=*
// @match        https://*/reportsv2.php?action=report&id=*
// @match        https://*/forums.php?action=new*
// @match        https://*/forums.php?*action=viewthread*
// @match        https://*/requests.php?action=view*
// @match        https://*/collages.php?id=*
// @match        https://*/collages.php?action=edit&collageid=*
// @match        https://*/collages.php?action=comments&collageid=*
// @match        https://*/collages.php?action=new
// @match        http*://tracker.czech-server.com/*
// @connect      *
// @grant        GM_xmlhttpRequest
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_deleteValue
// @require      https://greasyfork.org/scripts/408084-xhrlib/code/xhrLib.js
// @require      https://greasyfork.org/scripts/404516-progressbars/code/progressBars.js
// @require      https://greasyfork.org/scripts/401726-imagehostuploader/code/imageHostUploader.js
// @downloadURL none
// ==/UserScript==

'use strict';

if (document.getElementById('upload-assistant') != null) return; // don't clash with Upload Assistant

const itunesEntityParser = /^(?:https?):\/\/(?:[\w\-]+\.)*apple\.com\/(?:\S+\/)?(album|artist)\/(?:\S+\/)?(\d+)\b/i;
const itunesImageMax = [/\/(\d+x\d+)\w*(?=\.\w+$)/, '/100000x100000-999'];
const dzrEntityParser = /^(?:https?):\/\/(?:[\w\-]+\.)*deezer\.com\/(?:\S+\/)?(album|artist|track|comment|playlist|radio|user)\/(\d+)\b/i;
const dzImageMax = GM_getValue('deezer_get_png_cover', false) ? [/\/(\d+x\d+)(?:\-\d+)*\.\w+$/, '/1400x1400.png']
	: [/\/(\d+x\d+)(?:\-\d+)*(?=\.\w+$)/, '/1400x1400-000000-' + (parseInt(GM_getValue('deezer_jpeg_quality')) || 100) + '-0-0']
const discogsKey = 'LWiNvIWBobGMRhfSCAiC';
const discogsSecret = 'HAQUKFmebpCSLyRNwjmSgOMgbnxsVQcp';
const lfmApiKey = '920db0d2f86108f2fbe1917b53d63858';

Array.prototype.flatten = function() {
	return this.reduce(function(flat, toFlatten) {
		return flat.concat(Array.isArray(toFlatten) ? toFlatten.flatten() : toFlatten);
	}, []);
};

PTPimg.prototype.setSession = function() {
	return this.apiKey ? Promise.resolve(this.apiKey) : globalXHR(this.origin).then(response => {
		var apiKey = response.document.getElementById('api_key');
		if (apiKey == null) {
			let counter = GM_getValue('ptpimg_reminder_read', 0);
			if (counter < 3) {
				alert(`
PTPimg API key could not be captured. Please login to ${this.origin}/ and redo the action.
If you don\'t have PTPimg account or don\'t want to use it, consider to remove PTPimg from
'upload_hosts' and 'rehost_hosts' storage entries.
`);
				GM_setValue('ptpimg_reminder_read', ++counter);
			}
			return Promise.reject('API key not configured');
		} else if (!(this.apiKey = apiKey.value))
			return Promise.reject('assertion failed: empty PTPimg API key');
		GM_setValue('ptpimg_api_key', this.apiKey);
		Promise.resolve(this.apiKey)
			.then(apiKey => { alert(`Your PTPimg API key [${apiKey}] was successfully configured`) });
		return this.apiKey;
	});
}

var cheveretoCustomHosts = GM_getValue('chevereto_custom_hosts');
if (cheveretoCustomHosts !== undefined) try {
	JSON.parse(cheveretoCustomHosts).forEach(function(siteDef) {
		if (!siteDef.host_name || !siteDef.alias) {
			console.warn('Incomplete Chevereto custom site definition:', siteDef);
			return;
		}
		imageHostHandlers[siteDef.alias.replace(nonWordStripper, '').toLowerCase()] = new Chevereto(
			siteDef.host_name,
			siteDef.alias,
			siteDef.types,
			siteDef.size_limit, {
				sizeLimitAnonymous: siteDef.size_limit_anonymous,
				configPrefix: siteDef.config_prefix,
				apiEndpoint: siteDef.api_endpoint,
				apiFieldName: siteDef.api_field_name,
				apiResultKey: siteDef.api_result_key,
				jsonEndpoint: siteDef.json_endpoint,
			});
	});
} catch (e) { console.warn(e) } else GM_setValue('chevereto_custom_hosts', '[]');
console.log('Image host handlers:', imageHostHandlers);

['upload_hosts', 'rehost_hosts'].forEach(propName => { if (!GM_getValue(propName)) GM_setValue(propName, [
	'PTPimg', 'ImgBB', 'PixHost', 'ImgBox', 'Slowpoke', 'FunkyIMG', 'PostImage', 'Abload', 'VgyMe', 'Jerking',
	'Gifyu', 'GeekPic', 'LightShot', 'ImgURL', 'Radikal', 'Z4A', 'PicaBox', 'PimpAndHost',
	'CasImages', 'ImageBan', 'UuploadIr', 'Imgur', 'Catbox', 'ImageVenue', 'GetaPic', 'FastPic', 'SVGshare',
].join(', ')) });
[
	['passthepopcorn.me', [
		'PTPimg', 'ImgBB', 'PixHost', 'Slowpoke', 'ImgBox', 'FunkyIMG', 'Jerking', 'Gifyu', 'Abload', 'VgyMe', 'GeekPic',
		'LightShot', 'ImgURL', 'Radikal', 'Z4A', 'PicaBox', 'PimpAndHost', 'ImageBan', 'UuploadIr',
		'Catbox', 'ImageVenue', 'GetaPic',
	]],
	['notwhat.cd', ['NWCD']],
].forEach(hostDefaults => { if (!GM_getValue(hostDefaults[0])) GM_setValue(hostDefaults[0], hostDefaults[1].join(', ')) });

var imageHosts = new ImageHostManager(logFail,
	GM_getValue(document.domain) || GM_getValue('upload_hosts'),
	GM_getValue(document.domain) || GM_getValue('rehost_hosts'));

imageHostUploaderInit(inputDataHandler, textAreaDropHandler, textAreaPasteHandler, imageUrlResolver);

// Set single input UI handlers
document.querySelectorAll([
	'image', 'picture', 'cover', 'photo', 'avatar', 'poster', 'screen',
].map(pattern => ['id', 'name'].map(attr => 'input[type="text"][' + attr + '*="' + pattern + '"]')).join(','))
	.forEach(setInputHandlers);
if (document.URL.includes('/torrents.php?id=')) {
	let a = document.querySelector('span.additional_add_artists > a');
	if (a != null) a.addEventListener('click', function() {
		document.querySelectorAll('input[name="image[]"]').forEach(setInputHandlers);
	});
}
// Set multiple inputs UI handlers
for (let textArea of document.getElementsByTagName('textarea')) {
	if (textArea.className != 'ua-input') setTextAreahandlers(textArea);
}

// site-specific extensions
switch (document.domain) {
	case 'passthepopcorn.me':
		// Auto-fill missing/invalid images from IMDB
		if (/\/artist\.php\?action=edit&artistid=(\d+)\b/i.test(document.URL)) {
			let artistId = parseInt(RegExp.$1), input = document.querySelector('input[name="image"]');
			if (input != null) verifyImageUrl(input.value).catch(function(reason) {
				if (input.value) input.value = '';
				localXHR('/artist.php?id=' + artistId).then(function(dom) {
					let imdb = dom.querySelector('div#artistinfo > div.panel__body > ul.list > li > a');
					if (imdb != null) imageUrlResolver(imdb.href)
						.then(setCover.bind(input), reason => { logFail('No IMDB photo of this artist') });
				});
			});
		} else if (/\/torrents\.php??action=editgroup&groupid=(\d+)\b/i.test(document.URL)) {
			let groupId = parseInt(RegExp.$1), input = document.querySelector('input[name="image"]');
			if (input != null) verifyImageUrl(input.value).catch(function(reason) {
				if (input.value) input.value = '';
				localXHR('/torrents.php?id=' + groupId).then(function(dom) {
					let imdb = dom.querySelector('a#imdb-title-link');
					if (imdb != null) imageUrlResolver(imdb.href)
						.then(setCover.bind(input), reason => { logFail('No IMDB poster for this movie') });
				});
			});
		}
		// HJ Toolkit patch
		setTimeout(function() {
			if (document.querySelector('div.HJ-toolkit-badge') != null) {
				let hjtkTimer = setInterval(function() {
					document.querySelectorAll([
						'textarea[id^="HJMA"]',
						'textarea.form-control[name="screen"]',
						'textarea.form-control[name="comp"]',
						].join(',')).forEach(setTextAreahandlers);
				}, 1000);
			}
		}, 1000);
		break;
	case 'redacted.ch':
	case 'orpheus.network':
	case 'notwhat.cd':
	case 'dicmusic.club':
		// Auto-fill missing/invalid artist images
		if (document.URL.includes('/artist.php?action=edit&')) {
			let input = document.querySelector('input[name="image"]');
			if (input != null) verifyImageUrl(input.value).catch(function() {
				if (input.value) input.value = '';
				let artist = document.querySelector('div.header > h2 > a');
				if (artist != null) artist = artist.textContent.trim(); else throw 'Artist name not found';

				function resultsFilter(results0, nameExtractor) {
					const tailingBracketStripper = [/\s*\([^\(\)]+\)\s*$/, ''];
					let results = results0, f;
					if (results.length > 1) {
						f = results0.filter(result => nameExtractor(result).replace(...tailingBracketStripper).toASCII().replace(/\s+|/g, '').toLowerCase()
							== artist.replace(...tailingBracketStripper).toASCII().replace(/\s+/g, '').toLowerCase());
						if (f.length > 0) results = f;
					}
					if (results.length > 1) {
						f = results0.filter(result => nameExtractor(result).replace(...tailingBracketStripper).toASCII().toLowerCase()
							== artist.replace(...tailingBracketStripper).toASCII().toLowerCase());
						if (f.length > 0) results = f;
					}
					if (results.length > 1) {
						f = results0.filter(result => nameExtractor(result).replace(...tailingBracketStripper).toLowerCase()
							== artist.replace(...tailingBracketStripper).toLowerCase());
						if (f.length > 0) results = f;
					}
					return results;
				}

				let lookupWorkers = [
					// Qobuz
					globalXHR('https://www.qobuz.com/shop', { responseType: 'text' }).then(function(response) {
						const rx = /^\s*(?:(?:window\.)?qobuz\.algolia(\d+))\s*=\s*(\{.*\});/gm;
						let result = [], m;
						while ((m = rx.exec(response.responseText)) != null) {
							let obj = JSON.parse(m[2]);
							if (obj.api_key && obj.application_id) result[parseInt(m[1]) - 1] = obj;
						}
						return result[0] && result[1] ? result : Promise.reject('unexpected page structure');
					}).then(algolia => globalXHR('https://' + algolia[1].application_id.toLowerCase() + '-1.algolianet.com/1/indexes/' + algolia[1].index.main_artists + '/query?' + new URLSearchParams({
						'x-algolia-application-id': algolia[1].application_id,
						'x-algolia-api-key': algolia[1].api_key,
					}).toString(), { responseType: 'json' }, { 'params': 'query=' + encodeURIComponent(artist) })).then(function(response) {
						if (response.response.nbHits <= 0) return Promise.reject('Qobuz: no matches');
						let results = resultsFilter(response.response.hits, result => result.name);
						if (results.length > 1) return Promise.reject('Qobuz: ambiguity'); //console.info('Qobuz returns ambiguous results for "' + artist + '":', results);
						if (results.length <= 0) return Promise.reject('Qobuz: no matches');
						//console.debug('Qobuz search results for "' + artist + '":', results);
						return urlParser.test(results[0].image) ? results[0].image.replace(/(\/artists\/covers)\/\w+\//i, '$1/large/')
							: Promise.reject('Qobuz: artist exists but no photo');
					}),
					// Discogs
					globalXHR('https://api.discogs.com/database/search?' + new URLSearchParams({
						query: artist,
						type: 'artist',
						sort: 'score,desc',
						strict: false,
					}).toString(), {
						responseType: 'json',
						headers: { 'Authorization': 'Discogs key="' + discogsKey + '", secret="' + discogsSecret + '"' },
					}).then(response => {
						if (response.response.items <= 0) return Promise.reject('Discogs: no matches');
						let results = resultsFilter(response.response.results.filter(result => result.type == 'artist'),
							result => result.title);
						if (results.length > 1) console.info('Discogs returns ambiguous results for "' + artist + '":', results);
						if (results.length <= 0) return Promise.reject('Discogs: no matches');
						//console.debug('Discogs search results for "' + artist + '":', results);
						let artistCovers = results.map(result => {
							if (result.cover_image.includes('/spacer.gif')) return null;
							if (/^(?:https?):\/\/(?:img\.discogs\.com)\/.+\/(\S+?\.\w+)\b/i.test(result.cover_image))
								return 'https://www.discogs.com/image/' + RegExp.$1;
							return result.cover_image;
						});
						return urlParser.test(artistCovers[0]) ?
							artistCovers[0] : Promise.reject('Discogs: artist exists but no photo');
					}),
					// iTunes
					globalXHR('https://itunes.apple.com/search?' + new URLSearchParams({
						term: '"' + artist + '"',
						media: 'music',
						entity: 'musicArtist',
						attribute: 'artistTerm',
						//country: 'US',
					}).toString(), { responseType: 'json' }).then(function(response) {
						if (response.response.resultCount <= 0) return Promise.reject('Apple Music: no matches');
						let results = resultsFilter(response.response.results.filter(result =>
							result.wrapperType == 'artist' && result.artistType == 'Artist'), result => result.artistName);
						if (results.length > 1) console.info('Apple Music returns ambiguous results for "' + artist + '":', results);
						if (results.length <= 0) return Promise.reject('Apple Music: no matches');
						//console.debug('Apple Music search results for "' + artist + '":', results);
						return imageUrlResolver(results[0].artistLinkUrl);
					}),
					// Deezer
					globalXHR('https://api.deezer.com/search/artist?' + new URLSearchParams({
						q: artist,
						order: 'RANKING',
						//strict: 'on',
					}).toString(), { responseType: 'json' }).then(function(response) {
						if (response.response.total <= 0) return Promise.reject('Deezer: no matches');
						let results = resultsFilter(response.response.data.filter(result => result.type == 'artist'),
							result => result.name);
						if (results.length > 1) console.info('Deezer returns ambiguous results for "' + artist + '":', results);
						if (results.length <= 0) return Promise.reject('Deezer: no matches');
						//console.debug('Deezer search results for "' + artist + '":', results);
						return globalXHR(results[0].picture, {
							method: 'HEAD',
						}).then(response => verifyImageUrl(response.finalUrl)).catch(function(reason) {
							console.warn('Deezer API image retrieval failed:', reason);
							return response.response.data[0].picture_xl || response.response.data[0].picture_big
								|| response.response.data[0].picture_medium || response.response.data[0].picture_small;
						}).then(function(imageUrl) {
							if (!urlParser.test(imageUrl) || imageUrl.includes('/images/artist//'))
								return Promise.reject('Deezer: artist exists but no photo');
							return imageUrl.replace(...dzImageMax);
						});
					}),
					// Last.fm
					globalXHR('http://ws.audioscrobbler.com/2.0/?' + new URLSearchParams({
						method: 'artist.getinfo',
						artist: artist,
						format: 'json',
						api_key: lfmApiKey,
					}).toString(), { responseType: 'json' }).then(function(response) {
						if (response.response.error) return Promise.reject(response.response.message);
						//console.debug('Last.fm search result for "' + artist + '":', response.response.artist);
						const rx = /\/(\d+)x(\d+)\//;
						let biggest = response.response.artist.image.map(im => im['#text']).reduce(function(a, b) {
							let r = [a, b].map(RegExp.prototype.exec.bind(rx))
								.map(r => r != null ? parseInt(r[1]) * parseInt(r[2]) : -Infinity);
							return r[1] > r[0] ? b : a;
						});
						return rx.test(biggest) && !biggest.endsWith('/2a96cbd8b46e442fc41c2b86b821562f.png') ?
							biggest : Promise.reject('Last.fm: artist exists but no photo');
					}),
				];
				const lookUp = (index = 0) => index < lookupWorkers.length ?
					lookupWorkers[index].then(setCover.bind(input)).catch(reason => lookUp(index + 1))
						: Promise.reject('Image of this artist was not found');
				lookUp().catch(logFail);
			});
		}
		break;
	case 'tracker.czech-server.com':
		document.querySelectorAll('input[name="urlobr"]').forEach(setInputHandlers);
		break;
}

if (document.location.pathname.startsWith('/reportsv2.php')) {
	function setReportHandlers(evt) {
		setTimeout(function() {
			document.querySelectorAll('input[id*="image"]').forEach(setInputHandlers);
			document.querySelectorAll('textarea').forEach(setTextAreahandlers);
		}, 2000);
	}

	setReportHandlers();
	let reportTypeSelect = document.querySelector('select#type');
	if (reportTypeSelect != null) reportTypeSelect.addEventListener('change', setReportHandlers);
}

var opti_PNG = GM_getValue('optipng', false);

function coverPreview(imgUrl, size) {
	let div = document.getElementById('image-preview');
	if (div != null) document.body.removeChild(div);
	if (!urlParser.test(imgUrl)) return;
	div = document.createElement('div');
	div.id = 'image-preview';
	div.style = 'position: absolute; bottom: 20px; right: 20px; border: thin solid silver; ' +
		'background-color: #8888; padding: 10px; opacity: 0; transition: opacity 1s ease-in-out;';
	const cleanUp = () => {
		if (div.parentNode == null) return;
		div.style.opacity = 0;
		setTimeout(() => { document.body.removeChild(div) }, 1000);
	};
	div.ondblclick = cleanUp;
	let img = document.createElement('img');
	img.style = 'width: 225px;';
	img.onload = function(evt) {
		document.body.append(div);
		setTimeout(() => { div.style.opacity = 1 });
		setTimeout(cleanUp, 12000);
		if (!img.naturalWidth || !img.naturalHeight) return; // invalid image
		let info = document.createElement('div');
		info.id = 'image-info';
		info.style = 'text-align: center; background-color: #29434b; padding: 5px; color: white;' +
			'font: 500 10pt "Segoe UI", Verdana, sans-serif;';
		div.append(info);
		const resolution = img.naturalWidth + '×' + img.naturalHeight;
		(size > 0 ? Promise.resolve(size) : size instanceof Promise ? size : getRemoteFileSize(imgUrl)).then(function(size) {
			if (!(size >= 0)) throw 'invalid size';
			let imageSizeLimit = GM_getValue('image_size_reduce_threshold'),
					html = resolution + ' (<span id="image-size"';
			if (imageSizeLimit > 0 && size > imageSizeLimit * 2**10) html += ' style="color: red;"';
			html += '>' + formattedSize(size) + '</span>)';
			info.innerHTML = html;
		}).catch(reason => { info.textContent = resolution });
	};
	img.onerror = function(evt) { console.warn('Image source couldnot be loaded:', evt, imgUrl) };
	img.src = imgUrl;
	div.append(img);
}

function writeInfo() {
	let input = document.querySelector('input[name="summary"]');
	if (input != null && !input.disabled && !input.value) input.value = 'Image update/rehost';
}

function setCover(url) {
	return verifyImageUrl(url).then(imageUrl => {
		this.value = imageUrl;
		writeInfo();
		let size = getRemoteFileSize(imageUrl);
		coverPreview(imageUrl, size);
		return checkImageSize(imageUrl, this, size).then(imageUrl => {
			this.disabled = true;
			return imageHosts.rehostImages([imageUrl]).then(singleImageGetter).then(imageUrl => {
				if (imageUrl == null) throw 'invalid image';
				this.value = imageUrl;
			});
		}).catch(reason => {
			this.value = imageUrl;
			logFail(reason + ' (not rehosted)');
		}).then(() => {
			this.disabled = false;
			return imageUrl;
		});
	});
}

function inputDataHandler(evt, data) {
	const rehoster = imageUrl => imageHosts.rehostImages([imageUrl]).then(singleImageGetter).then(function(imageUrl) {
		if (!urlParser.test(imageUrl)) {
			console.warn('rehostImages returns invalid image URL:', imageUrl);
			throw 'invalid image URL';
		}
		evt.target.value = imageUrl;
		writeInfo();
	});

	if (!data) return true;
	if (data.files.length > 0) {
		if (data.files[0].type && !data.files[0].type.startsWith('image/')) return true;
		evt.target.disabled = true;
		if (evt.target.hTimer) {
			clearTimeout(evt.target.hTimer);
			delete evt.target.hTimer;
		}
		evt.target.style.color = 'white';
		evt.target.style.backgroundColor = 'darkred';
		let progressBar = { };
		function progressHandler(worker, param = null) {
			if (param && typeof param == 'object') {
				if (param.readyState > 1 || progressBar.current != undefined && worker !== progressBar.current
						|| Date.now() < progressBar.lastUpdate + 100) return;
				let pct = Math.floor(Math.min(param.done * 100 / param.total, 100));
				if (pct <= progressBar.lastPct) return;
				evt.target.value = 'Uploading... [' + (progressBar.lastPct = pct) + '%]';
				progressBar.lastUpdate = Date.now();
			} else if (param == null) {
				progressBar = { current: worker };
				evt.target.value = 'Uploading...';
			}
		}
		const file = data.files[0];
		evt.target.disabled = true;
		checkImageSize(file, evt.target, progressHandler).catch(function(reason) {
			logFail('Downsizing of source image not possible (' + reason + '), uploading original size');
			return file;
		}).then(function(result) {
			const uploader = file => imageHosts.uploadImages([file], progressHandler).then(singleImageGetter).then(function(imageUrl) {
				evt.target.value = imageUrl;
				coverPreview(imageUrl, file.size);
				writeInfo();
			});

			if (urlParser.test(result)) return rehoster(result).catch(function(reason) {
				logFail('Downsizing of source image failed (' + reason + '), uploading original size');
				return uploader(file);
			});
			if (result instanceof File) return uploader(result);
			console.warn('invalid checkImageSize(...) result:', result);
			return Promise.reject('invalid checkImageSize(...) result');
		}).then(function() {
			evt.target.style.backgroundColor = '#008000';
			evt.target.hTimer = setTimeout(function() {
				evt.target.style.backgroundColor = null;
				evt.target.style.color = null;
				delete evt.target.hTimer;
			}, 10000);
		}, function(reason) {
			imageClear(evt);
			evt.target.style.backgroundColor = null;
			evt.target.style.color = null;
			Promise.resolve(reason).then(msg => { alert(msg) });
		}).then(() => { evt.target.disabled = false });
		return false;
	} else if (data.items.length > 0) {
		let links = data.getData('text/uri-list');
		if (links) links = links.split(/\r?\n/); else {
			links = data.getData('text/x-moz-url');
			if (links) links = links.split(/\r?\n/).filter((item, ndx) => ndx % 2 == 0);
				else if (links = data.getData('text/plain')) links = links.split(/\r?\n/);
		}
		if (Array.isArray(links) && links.length > 0) imageUrlResolver(links[0]).then(verifyImageUrl).then(function(imageUrl) {
			evt.target.disabled = true;
			evt.target.value = imageUrl;
			let size = getRemoteFileSize(imageUrl);
			coverPreview(imageUrl, size);
			checkImageSize(imageUrl, evt.target, size).then(rehoster).catch(function(reason) {
				evt.target.value = imageUrl;
				Promise.resolve(reason).then(msg => { alert(msg + ' (not rehosted)') });
			}).then(() => { evt.target.disabled = false });
		}).catch(function(e) {
			console.error(e);
			alert(e);
		});
		return false;
	}
	return true;
}

function rehoster(promises, resultsHandler, target = null) {
	if (!Array.isArray(promises)) throw 'invalid parameter';
	return Promise.all(promises).then(function(resolved) {
		let resolvedUrls = resolved.flatten();
		if (target instanceof HTMLElement) {
			target.disabled = true;
			if (resolvedUrls.length > 1 && !['notwhat.cd'].some(hostname => document.domain == hostname))
				var progressBar = new RHProgressBar(target, resolvedUrls.length);
		}
		return (opti_PNG && target instanceof HTMLElement ?
			Promise.all(resolvedUrls.map(resolvedUrl => optiPNG(resolvedUrl).catch(reason => Promise.resolve(resolvedUrl))))
				: Promise.resolve(resolvedUrls)).then(srcUrls => imageHosts.rehostImages(srcUrls, RHProgressBar.prototype.update.bind(progressBar)).catch(function(reason) {
			Promise.resolve(reason).then(msg => { alert(msg + ' (not rehosted)') });
			RHProgressBar.prototype.update.call(progressBar, -1, false);
			return verifyImageUrls(srcUrls);
		}).then(function(results) {
			resultsHandler(results, arrayGrouping(resolved).flatten());
			RHProgressBar.prototype.cleanUp.call(progressBar);
			if (target instanceof HTMLElement) target.disabled = false;
		}));
	});
}

function textAreaDropHandler(evt) {
	if (!evt.dataTransfer || evt.shiftKey) return true;
	if (evt.dataTransfer.files.length > 0) {
		let images = Array.from(evt.dataTransfer.files).filter(file => !file.type || file.type.startsWith('image/'));
		if (images.length <= 0) return true;
		evt.target.disabled = true;
		if (!['notwhat.cd'].some(hostname => document.domain == hostname))
			var progressBar = new ULProgressBar(evt.target, images.map(image => image.size));
		(function() {
			if (!opti_PNG || !images.every(image => image.type == 'image/png')) return Promise.reject('!optiPNG');
			ULProgressBar.prototype.update.call(progressBar, -1);
			return rehoster([Promise.all(images.map((image, index) => optiPNG(image, (param = null) =>
				ULProgressBar.prototype.update.call(progressBar, -1, param, index))))], resultsHandler);
		})().catch(reason => imageHosts.uploadImages(images, ULProgressBar.prototype.update.bind(progressBar))
				.then(resultsHandler, reason => { Promise.resolve(reason).then(msg => { alert(msg) }) })).then(function() {
			ULProgressBar.prototype.cleanUp.call(progressBar);
			evt.target.disabled = false;
		});
		evt.stopPropagation();
		return false;
	} else if (evt.dataTransfer.items.length > 0) {
		let content = evt.dataTransfer.getData('text/uri-list');
		if (content) content = content.split(/(?:\r?\n)+/); else {
			content = evt.dataTransfer.getData('text/x-moz-url');
			if (content) content = content.split(/(?:\r?\n)+/).filter((item, ndx) => ndx % 2 == 0);
		};
		if (!Array.isArray(content) || content.length <= 0) return true;
		rehoster(content.map(imageUrlResolver), resultsHandler, evt.target);
		evt.stopPropagation();
		return false;
	}
	return true;

	function resultsHandler(results, groups = undefined) {
		if (results.length <= 0) return;
		if (evt.altKey && !evt.target.noBBCode) {
			let modal = document.createElement('div');
			modal.id = 'ihh-template-selector-background';
			modal.style = 'position: fixed; left: 0; top: 0; width: 100%; height: 100%; background-color: #0008;' +
				'opacity: 0; transition: opacity 0.15s linear;';
			modal.innerHTML = `
<div id="ihh-template-selector" style="background-color: darkslategray; position: absolute; top: 30%; left: 35%; border-radius: 0.5em; padding: 20px 30px;">
<div style="color: white;margin-bottom: 20px;">Insert as:</div>
<input id="btn-insert" type="button" value="Insert" style="margin-top: 30px"/>
<input id="btn-cancel" type="button" value="Cancel" style="margin-top: 30px"/>
</div>
`;
			document.body.append(modal);
			let form = document.getElementById('ihh-template-selector'),
					btnInsert = document.querySelector('div#ihh-template-selector input#btn-insert'),
					btnCancel = document.querySelector('div#ihh-template-selector input#btn-cancel');
			if (form == null || btnInsert == null || btnCancel == null) {
				console.warn('Dialog creation error');
				insertResults();
				return;
			}
			[
				['BBcode: original size', 1],
				['BBcode: thumbnails with link to original', 2],
				['BBcode: thumbnails with link to share page', 3],
				['BBcode: screenshot comparison (PTP)', 4],
				['BBcode: screenshot comparison + encode images (PTP)', 5],
				['Markdown: original size', 9],
				['HTML: original size', 6],
				['HTML: thumbnails with link to original', 7],
				['HTML: thumbnails with link to share page', 8],
				['Raw links', 0],
			].forEach(function(item) {
				let radio = document.createElement('input');
				radio.type = 'radio';
				radio.name = 'template';
				radio.value = item[1];
				radio.style = 'margin: 5px 15px 5px 0px; cursor: pointer;';
				let label = document.createElement('label');
				label.style = 'color: white; cursor: pointer; -webkit-user-select: none; ' +
					'-moz-user-select: none; -ms-user-select: none; user-select: none;';
				label.append(radio);
				label.append(item[0]);
				form.insertBefore(label, btnInsert);
				let br = document.createElement('br');
				form.insertBefore(br, btnInsert);
			});
			if (!results.some(result => typeof result == 'object'
					&& urlParser.test(result.original) && urlParser.test(result.thumb))) disableItem(2, 7);
			if (!results.some(result => typeof result == 'object'
					&& urlParser.test(result.original) && urlParser.test(result.share))) disableItem(3, 8);
			if (results.length % 2 != 0) disableItem(4, 5);
			form.onclick = evt => { evt.stopPropagation() };
			btnInsert.onclick = function(evt) {
				let template = document.querySelector('div#ihh-template-selector input[name="template"]:checked');
				if (template != null) template = parseInt(template.value);
				modal.remove();
				insertResults(template);
			};
			modal.onclick = btnCancel.onclick = evt => { modal.remove() };
			window.setTimeout(() => { modal.style.opacity = 1 });

			function disableItem(...n) {
				n.forEach(function(n) {
					let radio = document.querySelector('div#ihh-template-selector input[type="radio"][value="' + n + '"]');
					if (radio == null) return;
					radio.parentNode.style.opacity = 0.5;
					radio.disabled = true;
				});
			}
		} else insertResults();

		function insertResults(template = 1) {
			if (evt.target.noBBCode) template = 0;
			if (typeof template != 'number' || isNaN(template)) return;
			let code = '', nl = [6, 7, 8].includes(template) ? '<br>\n' : '\n', _template;
			results.forEach(function(result, index) {
				if (_template == 1 && /\[img\]\[\/img\]/i.test(evt.target.value)) {
					evt.target.value = RegExp.leftContext + '[img]' + getImgUrl(result) + '[/img]' + RegExp.rightContext;
					return;
				}
				_template = template;
				if (template == 2 && (typeof result != 'object' || !urlParser.test(result.original) || !urlParser.test(result.thumb))
						|| template == 3 && (typeof result != 'object' || !urlParser.test(result.share) || !urlParser.test(result.thumb)))
					_template = 1;
				else if (template == 7 && (typeof result != 'object' || !urlParser.test(result.original) || !urlParser.test(result.thumb))
						|| template == 8 && (typeof result != 'object' || !urlParser.test(result.share) || !urlParser.test(result.thumb)))
					_template = 6;
				else _template = template;
				if (index > 0) {
					let thumb = [2, 3, 7, 8].includes(_template);
					code += isGroupBoundary(groups, index) ? thumb ? nl : nl + nl : thumb ? ' ' : nl;
				}
				switch (_template) {
					case 0: case 4: case 5: code += getImgUrl(result); break;
					case 1: code += '[img]' + getImgUrl(result) + '[/img]'; break;
					case 2: code += '[url=' + getImgUrl(result) + '][img]' + result.thumb + '[/img][/url]'; break;
					case 3: code += '[url=' + result.share + '][img]' + result.thumb + '[/img][/url]'; break;
					case 6: code += '<img src="' + getImgUrl(result) + '">'; break;
					case 7: code += '<a href="' + getImgUrl(result) + '" target="_blank"><img src="' + result.thumb + '"></a>'; break;
					case 8: code += '<a href="' + result.share + '" target="_blank"><img src="' + result.thumb + '"></a>'; break;
					case 9: code += '![](' + getImgUrl(result) + ')'; break;
				}
			});
			if ([4, 5].includes(template)) {
				code = '[comparison=Source, Encode]' + code + '[/comparison]';
				if (template == 5) {
					code += nl;
					results.forEach((result, index) => { if (index % 2 != 0) code += nl + '[img]' + getImgUrl(result) + '[/img]' });
				}
			}
			if (evt.target.value.trimRight().length <= 0) evt.target.value = code; else if (evt.ctrlKey) {
				evt.target.value = evt.target.value.slice(0, evt.rangeOffset) + code + evt.target.value.slice(evt.rangeOffset);
			} else evt.target.value = evt.target.value.trimRight() + nl + nl + code;

			function getImgUrl(result) {
				if (typeof result == 'object' && urlParser.test(result.original)) return result.original;
				if (typeof result == 'string' && urlParser.test(result)) return result;
				throw 'Invalid result format';
			}
		}
	}
}

function textAreaPasteHandler(evt) {
	if (!evt.clipboardData) return true;
	if (evt.clipboardData.files.length > 0) {
		let images = Array.from(evt.clipboardData.files).filter(file => !file.type || file.type.startsWith('image/'));
		if (images.length <= 0) return true;
		evt.target.disabled = true;
		if (!['notwhat.cd'].some(hostname => document.domain == hostname))
			var progressBar = new ULProgressBar(evt.target, images.map(image => image.size));
		(function() {
			if (!opti_PNG || !images.every(image => image.type == 'image/png')) return Promise.reject('!optiPNG');
			ULProgressBar.prototype.update.call(progressBar, -1);
			return rehoster([Promise.all(images.map((image, index) => optiPNG(image, (param = null) =>
				ULProgressBar.prototype.update.call(progressBar, -1, param, index))))], resultsHandler);
		})().catch(reason => imageHosts.uploadImages(images, ULProgressBar.prototype.update.bind(progressBar))
			.then(resultsHandler, reason => { Promise.resolve(reason).then(msg => { alert(msg) }) }))
			.then(function() { // __finally
				ULProgressBar.prototype.cleanUp.call(progressBar);
				evt.target.disabled = false;
			});
		evt.stopPropagation();
		return false;
	} else if (evt.clipboardData.items.length > 0) {
		let urls = evt.clipboardData.getData('text/plain').split(/(?:\r?\n)+/);
		if (urls.length <= 0 || !urls.every(RegExp.prototype.test.bind(urlParser))) return true;
		// 	Promise.all(urls.map(imageUrlResolver)).then(function(resolved) {
		// 	  evt.target.disabled = true;
		// 	  var resolvedUrls = resolved.flatten();
		// 	  if (resolvedUrls.length > 1 && !['notwhat.cd'].some(hostname => document.domain == hostname))
		// 	  	progressBar = new RHProgressBar(evt.target, resolvedUrls.length);
		// 	  imageHosts.rehostImages(resolvedUrls, RHProgressBar.prototype.update.bind(progressBar)).catch(function(reason) {
		// 		Promise.resolve(reason).then(msg => { alert(msg + ' (not rehosted)') });
		// 		RHProgressBar.prototype.update.call(progressBar, -1, false);
		// 		return verifyImageUrls(resolvedUrls);
		// 	  }).then(function(results) {
		// 		resultsHandler(results, arrayGrouping(resolved).flatten());
		// 		progressBar.cleanUp.call(progressBar);
		// 		evt.target.disabled = false;
		// 	  });
		// 	});
		// 	evt.stopPropagation();
		// 	return false;
	}
	return true;

	function resultsHandler(results, groups = undefined) {
		let selStart = evt.target.selectionStart, phpBB = '';
		results.forEach(function(result, index) {
			let thumb = evt.altKey && !evt.target.noBBCode && typeof result == 'object'
				&& urlParser.test(result.originasl) && urlParser.test(result.thumb);
			if (index > 0) phpBB += isGroupBoundary(groups, index) ? thumb ? '\n' : '\n\n' : thumb ? ' ' : '\n';
			if (typeof result == 'object' && result.original) var imgUrl = result.original;
				else if (typeof result == 'string') imgUrl = result;
					else throw 'Invalid result format';
			phpBB += evt.target.noBBCode ? phpBB += imgUrl : !thumb ? '[img]' + imgUrl + '[/img]'
				: '[url=' + imgUrl + '][img]' + result.thumb + '[/img][/url]';
		});
		if (phpBB.length <= 0) return;
		evt.target.value = evt.target.value.slice(0, selStart) + phpBB + evt.target.value.slice(evt.target.selectionEnd);
		evt.target.setSelectionRange(selStart + phpBB.length, selStart + phpBB.length);
	}
}

function arrayGrouping(arr) {
	return Array.isArray(arr) ? arr.map(function(elem) {
		if (!Array.isArray(elem)) return 1;
		return elem.every(elem => !Array.isArray(elem)) ? elem.length : arrayGrouping(elem);
	}) : null;
}

function isGroupBoundary(groups, index) {
	return index > 0 && Array.isArray(groups)
		&& groups.some((len, ndx, arr) => index == arr.slice(0, ndx).reduce((acc, len) => acc + len, 0));
}

function checkImageSize(image, elem = null, param) {
	let imageSizeLimit = GM_getValue('image_size_reduce_threshold');
	if (!(imageSizeLimit > 0)) return Promise.resolve(image);
	if (!(elem instanceof HTMLElement)) elem = null;
	if (elem != null) elem.disabled = true;
	return (image instanceof File ? Promise.resolve(image.size) : param > 0 ? Promise.resolve(param)
			: param instanceof Promise ? param : getRemoteFileSize(image)).then(function(size) {
		if (size <= imageSizeLimit * 2**10) return image;
		const haveRhHosts = Array.isArray(imageHosts.rhHostChain) && imageHosts.rhHostChain.length > 0;
		if (!haveRhHosts && !GM_getValue('force_reduce', true)) return Promise.reject('no hosts to upload result');
		return reduceImageSize(image, GM_getValue('image_reduce_maxheight', 2160),
				GM_getValue('image_reduce_jpegquality', 90), typeof param == 'function' ? param : null).then(function(output) {
			if (elem != null) {
				elem.value = output.uri;
				if (image instanceof File) coverPreview(output.uri, output.size);
			}
			Promise.resolve(output.size).then(reducedSize => {
				console.log('cover size reduced by ' + Math.round((size - reducedSize) * 100 / size) +
					'% (' + Math.ceil(size / 2**10) + ' → ' + Math.ceil(reducedSize / 2**10) + ' KiB)');
			});
			return haveRhHosts ? output.uri : (function() {
				let fallbackHost = new Chevereto('imgcdn.dev', 'ImgCDN',
					['jpeg', 'png', 'gif', 'bmp', 'webp'], 30, { sizeLimitAnonymous: 20 });
				if (!fallbackHost.apiKey) fallbackHost.apiKey = '5386e05a3562c7a8f984e73401540836';
				return output.size > fallbackHost.sizeLimit * 2**20 ? Promise.reject('size limit exceeded')
					: fallbackHost.rehost([output.uri]).then(singleImageGetter);
			})().catch(function(reason) {
				console.warn('Upload to ImgCDN fail:', reason);
				return imageHostHandlers['pixhost'].rehost([output.uri]).then(singleImageGetter);
			});
		});
	}).catch(function(reason) {
		logFail('failed to get remote image size or optimize the image: ' + reason + ' (size reduction was not performed)');
		return image;
	}).then(function(finalResult) {
		if (elem != null) {
			if (urlParser.test(finalResult)) {
				if (finalResult != elem.value) elem.value = finalResult;
			} else elem.value = '';
			elem.disabled = false;
		}
		return finalResult;
	});
}

function imageUrlResolver(url) {
	return urlResolver(url).then(url => verifyImageUrl(url).catch(function(reason) {
		const notFound = Promise.reject('No title image for this URL');
		function getFromMeta(root) {
			let meta = root instanceof Document || root instanceof Element ? [
				'meta[property="og:image:secure_url"][content]',
				'meta[property="og:image"][content]',
				'meta[name="og:image"][content]',
				'meta[itemprop="og:image"][content]',
				'meta[itemprop="image"][content]',
			].reduce((elem, selector) => elem || root.querySelector(selector), null) : null;
			return meta != null && urlParser.test(meta.content) ? meta.content : undefined;
		}

		try { url = new URL(url) } catch(e) { return Promise.reject(e) }
		if (url.hostname.endsWith('pinterest.com'))
			return pinterestResolver(url);
		else if (url.hostname.endsWith('free-picload.com')) {
			if (url.pathname.startsWith('/album/')) return imageHostHandlers.picload.galleryResolver(url);
		} else if (url.hostname.endsWith('bandcamp.com')) return globalXHR(url).then(function(response) {
			let ref = response.document.querySelector('div#tralbumArt > a.popupImage');
			ref = ref != null ? ref.href : getFromMeta(response.document);
			return ref ? Promise.resolve(ref.replace(/_\d+(?=\.\w+$)/, '_0')) : notFound;
		}); else if (url.hostname.endsWith('7digital.com') && url.pathname.startsWith('/artist/'))
			return globalXHR(url).then(function(response) {
				let img = response.document.querySelector('img[itemprop="image"]');
				return img != null ? img.src : notFound;
			});
		else if (url.hostname.endsWith('geekpic.net')) return globalXHR(url).then(function(response) {
			let a = response.document.querySelector('div.img-upload > a.mb');
			return a != null ? a.href : notFound;
		}); else if (url.hostname.endsWith('qq.com') && url.pathname.includes('/album/')) return globalXHR(url).then(function(response) {
			let img = response.document.querySelector('img#albumImg');
			return img != null ? img.src.replace(/(?:_\d+)?(\.\w+)(?:\?.*)?$/, '$1').replace(/R\d+x\d+/, '') : notFound;
		}); else switch (url.hostname) {
			// general image hostings
			case 'www.imgur.com': case 'imgur.com':
				if (url.pathname.startsWith('/a/')) return globalXHR(url, { responseType: 'text' }).then(function(response) {
					if (/^\s*(?:image)\s*:\s*(\{.+\}),\s*$/m.test(response.responseText)) try {
						return JSON.parse(RegExp.$1).album_images.images.map(image => 'https://i.imgur.com/' + image.hash + image.ext);
					} catch(e) { debug.warn(e) }
					return notFound;
				});
				return globalXHR(url).then(response => response.document.querySelector('link[rel="image_src"]').href);
			case 'pixhost.to':
				if (url.pathname.startsWith('/gallery/')) return globalXHR(url).then(response =>
					Promise.all(Array.from(response.document.querySelectorAll('div.images > a')).map(a => imageUrlResolver(a.href))));
				if (url.pathname.startsWith('/show/')) return globalXHR(url)
					.then(response => response.document.querySelector('img#image').src);
				break;
			case 'malzo.com':
				if (url.pathname.startsWith('/al/')) return imageHostHandlers.malzo.galleryResolver(url);
				break;
			case 'imgbb.com': case 'ibb.co':
				if (url.pathname.startsWith('/album/')) return imageHostHandlers.imgbb.galleryResolver(url);
				break;
			case 'jerking.empornium.ph':
				if (url.pathname.startsWith('/album/')) return imageHostHandlers.jerking.galleryResolver(url);
				break;
			case 'imgbox.com':
				if (url.pathname.startsWith('/g/')) return globalXHR(url).then(response =>
					Promise.all(Array.from(response.document.querySelectorAll('div#gallery-view-content > a'))
						.map(a => imageUrlResolver('https://imgbox.com' + a.pathname))));
				break;
			case 'postimage.org': case 'postimg.cc':
				if (!url.pathname.startsWith('/gallery/')) break;
				return PostImage.resultsHandler(url).then(results => results.map(result => result.original));
			case 'www.imagevenue.com': case 'imagevenue.com':
				return globalXHR(url, { headers: { Referer: 'http://www.imagevenue.com/' } }).then(function(response) {
					let images = Array.from(response.document.querySelectorAll('div.card img')).map(function(img) {
						return img.src.includes('://cdn-images') ? Promise.resolve(img.src) : imageUrlResolver(img.parentNode.href);
					});
					return images.length > 1 ? Promise.all(images) : images.length == 1 ? images[0] : notFound;
				});
			case 'www.imageshack.us': case 'imageshack.us':
				return globalXHR(url).then(response => response.document.querySelector('a#share-dl').href);
			case 'www.flickr.com': case 'flickr.com':
				if (!url.pathname.startsWith('/photos/')) break;
				return globalXHR(url).then(function(response) {
					if (/\b(?:modelExport)\s*:\s*(\{.+\}),/.test(response.responseText)) try {
						let urls = JSON.parse(RegExp.$1).main['photo-models'].map(function(photoModel) {
							let sizes = Object.keys(photoModel.sizes).sort((a, b) => photoModel.sizes[b].width *
								photoModel.sizes[b].height - photoModel.sizes[a].width * photoModel.sizes[a].height);
							return sizes.length > 0 ? 'https:'.concat(photoModel.sizes[sizes[0]].url) : null;
						});
						if (urls.length == 1) return urls[0]; else if (urls.length > 1) return urls;
					} catch(e) { console.warn(e) }
					return notFound;
				});
			case 'photos.google.com':
				return googlePhotosResolver(url);
			case 'www.500px.com': case 'web.500px.com': case '500px.com':
				if (/^\/photo\/(\d+)\b/i.test(url.pathname))
					return _500pxUrlHandler('photos?ids='.concat(RegExp.$1));
				else if (/\/galleries\/([\w\-]+)/i.test(url.pathname)) {
					let galleryId = RegExp.$1;
					return globalXHR(url, { rsponseType: 'text' }).then(function(response) {
						if (!/\b(?:App\.CuratorId)\s*=\s*"(\d+)"/.test(response.responseText)) return Promise.reject('Unexpected page structure');
						return _500pxUrlHandler('users/' + RegExp.$1 + '/galleries/' + galleryId + '/items?sort=position&sort_direction=asc&rpp=999');
					});
				}
				break;
			case 'www.pxhere.com': case 'pxhere.com':
				if (url.pathname.includes('/photo/')) return globalXHR(url).then(response =>
						JSON.parse(response.document.querySelector('div.hub-media-content > script[type="application/ld+json"]').text).contentUrl);
					else if (url.pathname.includes('/collection/')) return pxhereCollectionResolver(url);
				break;
			case 'www.unsplash.com': case 'unsplash.com':
				if (url.pathname.startsWith('/photos/')) return globalXHR(url.origin + url.pathname + '/download', { method: 'HEAD' })
						.then(response => response.finalUrl.replace(/\?.*$/, ''));
					else if (url.pathname.includes('/collections/')) return unsplashCollectionResolver(url);
				break;
			case 'www.pexels.com': case 'pexels.com':
				if (url.pathname.startsWith('/photo/')) return globalXHR(url)
						.then(response => response.document.querySelector('meta[property="og:image"][content]').content.replace(/\?.*$/, ''));
					else if (url.pathname.startsWith('/collections/')) return pexelsCollectionResolver(url);
				break;
			case 'www.piwigo.org': case 'piwigo.org':
				/*if (url.pathname.includes('/picture/')) */return globalXHR(url, { responseType: 'text' }).then(function(response) {
					if (/^(?:RVAS)\s*=\s*(\{[\S\s]+?\})$/m.test(response.responseText)) try {
						let derivatives = eval('(' + RegExp.$1 + ')').derivatives.sort((a, b) => b.w * b.h - a.w * a.h);
						return derivatives.length > 0 ? 'https://piwigo.org/demo/'.concat(derivatives[0].url) : notFound;
					} catch(e) { console.warn(e) }
					return Promise.reject('Unexpected page structure');
				});
				break;
			case 'www.freeimages.com': case 'freeimages.com':
				if (url.pathname.startsWith('/photo/')) return globalXHR(url).then(function(response) {
					let types = Array.from(response.document.querySelectorAll('ul.download-type > li > span.reso'))
						.sort((a, b) => eval(b.textContent.replace('x', '*')) - eval(a.textContent.replace('x', '*')));
					return types.length > 0 ? url.origin.concat(types[0].parentNode.querySelector('a').pathname) : notFound;
				});
				break;
			case 'redacted.ch':
				if (url.pathname != '/image.php') break;
				return globalXHR(url, { method: 'HEAD' }).then(response => response.finalUrl);
			case 'demo.cloudimg.io': {
				if (!/\b(https?:\/\/\S+)$/.test(url.pathname.concat(url.search, url.hash))) break;
				let resolved = RegExp.$1;
				if (/\b(?:https?):\/\/(?:\w+\.)*discogs\.com\//i.test(resolved)) break;
				return imageUrlResolver(resolved);
			}
			case 'www.pimpandhost.com': case 'pimpandhost.com':
				if (!url.pathname.startsWith('/image/')) break;
				return globalXHR(url).then(function(response) {
					let elem = resopnse.document.querySelector('div.main-image-wrapper');
					if (elem != null && elem.dataset.src) return 'https:'.concat(elem.dataset.src);
					elem = resopnse.document.querySelector('div.img-wrapper > a > img');
					return elem != null ? 'https:'.concat(elem.src) : notFound;
				});
			case 'www.screencast.com': case 'screencast.com':
				return globalXHR(url).then(function(response) {
					let ref = response.document.querySelectorAll('ul#containerContent > li a.media-link');
					if (ref.length <= 0) return getFromMeta(response.document) || notFound;
					return Promise.all(Array.from(ref).map(a => imageUrlResolver('https://www.screencast.com' + a.href)));
				});
			case 'abload.de':
				if (!url.pathname.startsWith('/image.php')) break;
				return globalXHR(url).then(function(response) {
					let elem = response.document.querySelector('img#image');
					if (elem == null) return notFound;
					let src = new URL(elem.src);
					return imageHostHandlers.abload.origin + src.pathname + src.search;
				});
			case 'fastpic.ru':
				if (url.pathname.startsWith('/view/'))
					return globalXHR(url).then(response => imageUrlResolver(response.document.querySelector('a.img-a').href));
				if (url.pathname.startsWith('/fullview/')) return globalXHR(url).then(function(response) {
					let node = response.document.getElementById('image');
					if (node != null) return node.src;
					return /\bvar\s+loading_img\s*=\s*'(\S+?)';/.test(response.responseText) ? RegExp.$1 : notFound;
				});
				break;
			case 'www.radikal.ru': case 'radikal.ru': case 'a.radikal.ru':
				return globalXHR(url).then(response => response.document.querySelector('div.mainBlock img').src);
			case 'imageban.ru': case 'ibn.im':
				return globalXHR(url).then(response => response.document.querySelector('a[download]').href);
			case 'svgshare.com':
				return globalXHR(url).then(function(response) {
					let link;
					response.document.querySelectorAll('ul#shares > li > input[type="text"]')
						.forEach(input => { if (!link && /^(?:https?:\/\/.+\.svg)$/.test(input.value)) link = input.value; });
					return link || notFound;
				});
			case 'slow.pics':
				if (!url.pathname.startsWith('/c/')) break;
				return globalXHR(url).then(function(response) {
					let nodes = response.document.querySelectorAll('img.card-img-top');
					if (nodes.length > 1) return Array.from(nodes).map(img => img.src);
						else if (nodes.length > 0) return nodes[0].src;
					nodes = response.document.querySelectorAll('a#comparisons + div.dropdown-menu > a.dropdown-item');
					if (nodes.length > 0) return Promise.all(Array.from(nodes).map(a => globalXHR(url.origin + a.pathname).then(response =>
						Array.from(response.document.querySelectorAll('div#preload-images > img')).map(img => img.src))));
					return notFound;
				});
			case 'www.amazon.com': case 'amazon.com':
			case 'www.amazon.ae': case 'www.amazon.com.au': case 'www.amazon.com.br': case 'www.amazon.ca':
			case 'www.amazon.cn': case 'www.amazon.de': case 'www.amazon.es': case 'www.amazon.fr':
			case 'www.amazon.co.uk': case 'www.amazon.in': case 'www.amazon.it': case 'www.amazon.co.jp':
			case 'www.amazon.com.mx': case 'www.amazon.nl': case 'www.amazon.sa': case 'www.amazon.se':
			case 'www.amazon.sg': case 'www.amazon.com.tr':
				return globalXHR(url).then(function(response) {
					const rx = /\._\S+?_(?=\.)/,
								getImgOrigin = colorImage => (colorImage.hiRes || colorImage.large || colorImage.thumb).replace(rx, '');
					let obj = /^\s*(?:var\s+obj\s*=\s*jQuery\.parseJSON)\('(\{.+\})'\);/m.exec(response.responseText);
					if (obj != null) {
						try { obj = JSON.parse(obj[1]) } catch(e) { try { obj = eval('(' + obj[1] + ')') } catch(e) { obj = { } } }
						let variants = Object.keys(obj.colorImages);
						if (variants.length > 0) return variants.map(key => obj.colorImages[key].map(getImgOrigin));
					}
					let colorImages = /^\s*'colorImages':\s*(\{.+\}),?$/m.exec(response.responseText);
					if (colorImages != null) {
						try { colorImages = JSON.parse(colorImages[1].replace(/'/g, '"')) }
						catch(e) { try { colorImages = eval('(' + colorImages[1] + ')') } catch(e) { colorImages = { } } }
						if (Array.isArray(colorImages.initial) && colorImages.initial.length > 0)
							return colorImages.initial.map(getImgOrigin);
					}
					let img = ['div#ppd-left img', 'img#igImage', 'img#imgBlkFront']
						.reduce((acc, sel) => acc || response.document.querySelector(sel), null);
					if (img == null) return notFound;
					if (img.dataset.aDynamicImage) try {
						let imgUrl = Object.keys(JSON.parse(img.dataset.aDynamicImage))[0];
						if (urlParser.test(imgUrl)) return imgUrl.replace(rx, '');
					} catch(e) { }
					return urlParser.test(img.src) ? img.src.replace(rx, '') : notFound;
				});
			case 'www.casimages.com': case 'casimages.com':
				if (!url.pathname.startsWith('/i/')) break;
				return globalXHR(url).then(function(response) {
					let elem = response.document.querySelector('div.logo > a');
					if (elem != null) return elem.href;
					elem = response.document.querySelector('div.logo img');
					return elem != null ? elem.src : notFound;
				});
			case 'www.getapic.me': case 'getapic.me':
				return globalXHR(url, { responseType: 'json' }).then(function(response) {
					if (!response.response.result.success) return Promise.reject(response.response.result.errors);
					if (Array.isArray(response.response.result.data.images))
						return response.response.result.data.images.map(image => image.url);
					return response.response.result.data.image ? response.response.result.data.image.url : notFound;
				});
			// music-related
			case 'www.musicbrainz.org': case 'musicbrainz.org':
				if (!['release', 'release-group'].some(branch => url.pathname.includes('/' + branch + '/'))) break;
				return globalXHR(url).then(function(response) {
					let node = response.document.querySelector('p.subheader > span.small > a');
					return (node != null ? imageUrlResolver('https://musicbrainz.org' + node.pathname) : Promise.reject('no release group')).catch(function(reason) {
						return (node = response.document.querySelector('a.artwork-image')) != null ? node.href
							: (node = response.document.querySelector('div.cover-art > img')) != null ? node.src : notFound;
					});
				});
			case 'music.apple.com':
				if (!itunesEntityParser.test(url)) break;
				return globalXHR(url).then(function(response) {
					let meta = getFromMeta(response.document);
					return meta && !meta.includes('/assets/meta/') ?
						verifyImageUrl(meta.replace(...itunesImageMax)).catch(reason => meta) : notFound;
				});
			case 'www.deezer.com': case 'deezer.com':
				if (!dzrEntityParser.test(url)) break;
				return globalXHR('https://api.deezer.com/' + RegExp.$1 + '/' + RegExp.$2 + '/image', {
					method: 'HEAD',
				}).then(response => verifyImageUrl(response.finalUrl.replace(...dzImageMax))).catch(function(reason) {
					console.warn('Deezer API image retrieval failed:', reason, url);
					return globalXHR(url).then(function(response) {
						let meta = getFromMeta(response.document);
						return meta ? verifyImageUrl(meta.replace(...dzImageMax)).catch(reason => meta) : notFound;
					});
				});
			case 'www.qobuz.com': case 'qobuz.com':
				if (!url.pathname.includes('/album/')) break;
				return globalXHR(url).then(function(response) {
					let img = response.document.querySelector('div.album-cover > img');
					if (img == null) return notFound;
					return verifyImageUrl(img.src.replace(/_\d{3}(?=\.\w+$)/, '_org'))
						.catch(reason => verifyImageUrl(img.src.replace(/_\d{3}(?=\.\w+$)/, '_max')))
						.catch(reason => img.src);
				});
			case 'www.discogs.com': case 'discogs.com':
				return globalXHR(url).then(function(response) {
					const dcOrigin = 'https://www.discogs.com';
					let master = response.document.getElementById('all-versions-link');
					return (master == null ? Promise.reject('no master')
								: globalXHR(dcOrigin + master.pathname).then(response => getFromMeta(response.document) || notFound))
						.catch(reason => getFromMeta(response.document) || notFound)
						.then(imgUrl => /^(?:https?):\/\/(?:img\.discogs\.com)\/.+\/(\S+?\.\w+)\b/i.test(imgUrl) ?
									dcOrigin + '/image/' + RegExp.$1 : imgUrl);
				});
			case 'www.boomkat.com': case 'boomkat.com':
				if (!url.pathname.startsWith('/products/')) break;
				return globalXHR(url).then(function(response) {
					let img = response.document.querySelector('img[itemprop="image"]');
					if (img == null) return notFound;
					return verifyImageUrl(img.src.replace(/\/large\//i, '/original/')).catch(reason => img.src);
				});
			case 'www.bleep.com': case 'bleep.com':
				if (!url.pathname.startsWith('/release/')) break;
				return globalXHR(url).then(function(response) {
					let meta = getFromMeta(response.document);
					return meta ? verifyImageUrl(meta.replace(/\/r\/[a-z]\//i, '/r/')).catch(reason => meta) : notFound;
				});
			case 'www.soundcloud.com': case 'soundcloud.com':
				return globalXHR(url).then(function(response) {
					let meta = getFromMeta(response.document);
					return meta ? verifyImageUrl(meta.replace(/\bt\d+x\d+(?=\.\w+$)/, 'original')).catch(reason => meta) : notFound;
				});
			case 'www.prestomusic.com': case 'prestomusic.com':
				if (!url.pathname.includes('/products/')) break;
				return globalXHR(url)
					.then(response => verifyImageUrl(response.document.querySelector('div.c-product-block__aside > a').href.replace(/\?\d+$/)));
			case 'www.bontonland.cz':case 'bontonland.cz':
				return globalXHR(url).then(response => response.document.querySelector('a.detailzoom').href);
			case 'www.prostudiomasters.com': case 'prostudiomasters.com':
				if (!url.pathname.includes('/album/')) break;
				return globalXHR(url).then(function(response) {
					let a = response.document.querySelector('img.album-art');
					return verifyImageUrl(a.currentSrc).catch(reason => a.src);
				});
			case 'www.e-onkyo.com': case 'e-onkyo.com':
				if (!url.pathname.includes('/album/')) break;
				return globalXHR(url).then(function(response) {
					let meta = getFromMeta(response.document);
					return meta ? meta.replace(/\/s\d+\//, '/s0/') : notFound;
				})
			case 'store.acousticsounds.com':
				return globalXHR(url).then(function(response) {
					let link = response.document.querySelector('div#detail > link[rel="image_src"]');
					return verifyImageUrl(link.href.replace(/\/medium\//i, '/xlarge/')).catch(reason => link.href);
				});
			case 'www.indies.eu': case 'indies.eu':
				if (!url.pathname.includes('/alba/')) break;
				return globalXHR(url).then(response => verifyImageUrl)(response.document.querySelector('div.obrazekDetail > img').src);
			case 'www.beatport.com': case 'classic.beatport.com': case 'pro.beatport.com': case 'beatport.com':
				if (!url.pathname.startsWith('/release/')) break;
				return globalXHR(url).then(function(response) {
					let elem = getFromMeta(response.document);
					return elem || ((elem = response.document.querySelector('div.artwork')) != null ?
						'https:' + elem.dataset.modalArtwork : notFound);
				}).then(imgUrl => imgUrl.replace(/\/image_size\/\d+x\d+\//i, '/image/'));
			case 'www.beatsource.com': case 'beatsource.com':
				if (!url.pathname.startsWith('/release/')) break;
				return globalXHR(url).then(function(response) {
					let imgUrl = getFromMeta(response.document);
					return imgUrl ? imgUrl.replace(/\/image_size\/\d+x\d+\//i, '/') : notFound;
				});
			case 'www.supraphonline.cz': case 'supraphonline.cz':
				if (!url.pathname.includes('/album/')) break;
				return globalXHR(url).then(response => verifyImageUrl(response.document.querySelector('meta[itemprop="image"]')
					.content.replace(/\?.*$/, '')).catch(reason => notFound));
			case 'vgmdb.net':
				if (!url.pathname.includes('/album/')) break;
				return globalXHR(url).then(function(response) {
					let div = response.document.querySelector('div#coverart');
					return verifyImageUrl(/\b(?:url)\s*\(\"(.*)"\)/i.test(div.style['background-image']) && RegExp.$1).catch(reason => notFound);
				});
			case 'www.ototoy.jp': case 'ototoy.jp':
				return globalXHR(url).then(function(response) {
					let img = response.document.querySelector('div#tralbumArt > a.popupImage');
					return verifyImageUrl(img.dataset.src).catch(reason => img.src);
				});
			case 'music.yandex.ru':
				if (!url.pathname.includes('/album/')) break;
				return globalXHR(url).then(function(response) {
					let script = response.document.querySelector('script.light-data');
					return verifyImageUrl(JSON.parse(script.text).image).catch(reason => notFound);
				});
			case 'www.pias.com': case 'store.pias.com': case 'pias.com':
				return globalXHR(url).then(function(response) {
					let node = getFromMeta(response.document);
					if (node) return verifyImage(node.replace(/\/[sbl]\//i, '/')).catch(reason => node);
					node = response.document.querySelector('img[itemprop="image"]');
					return node != null ? verifyImage(node.src.replace(/\/[sbl]\//i, '/')).catch(reason => node.src) : notFound;
				});
			case 'www.eclassical.com': case 'eclassical.com':
				return globalXHR(url).then(function(response) {
					let a = response.document.querySelector('div#articleImage > a');
					return a != null ? a.href : notFound;
				});
			case 'www.hdtracks.com': case 'hdtracks.com':
				if (!/\/album\/(\w+)\b/.test(url)) break;
				return fetch('https://hdtracks.azurewebsites.net/api/v1/album/' + RegExp.$1).then(response => response.json())
					.then(result => result.status.toLowerCase() == 'ok' ? result.cover : Promise.reject(result.status));
			case 'www.muziekweb.nl': case 'muziekweb.nl':
				if (!/\/Link\/(\w+)\b/i.test(url)) break;
				return globalXHR(url).then(function(response) {
					let meta = getFromMeta(response.document)
					return meta ? meta.replace(/\/COVER\/\w+\b/i, '/COVER/SUPERLARGE') : notFound;
				});
			case 'www.deejay.de': case 'deejay.de':
				return globalXHR(url).then(function(response) {
					let elem = response.document.querySelector('div#gallery > a') || response.document.querySelector('div.cover a');
					if (elem != null) return 'https://www.deejay.de' + elem.pathname;
					return (elem = getFromMeta(response.document)) ? elem : notFound;
				}).then(imgUrl => verifyImageUrl(imgUrl.replace(/\/images\/\w+\//i, '/images/xxl/')).catch(() => imgUrl));
			case 'music.163.com':
				if (!/\/album.*\b(?:id)=(\d+)\b/i.test(url.href)) break;
				return globalXHR('https://music.163.com/api/album/' + RegExp.$1, { responseType: 'json' })
					.then(response => response.response.album.picUrl ?
						response.response.album.picUrl.replace(/\b(?:p[123])(?=\.music\.\d+\.net\b)/i, 'p4') : notFound);
			case 'www.tidal.com': case 'tidal.com':
				if (!(/\/album\/(\d+)(?:\/|$)/i.test(url.pathname) && !/\b(?:albumId)=(\d+)\b/i.test(url.search))) break;
				return globalXHR('https://api.tidal.com/v1/albums/' + RegExp.$1 + '?countrycode=US&token=_DSTon1kC8pABnTw', {
					responseType: 'json',
				}).then(response => response.response.cover ? 'https://resources.tidal.com/images/' + response.response.cover.replace(/-/g, '/') + '/1280x1280.jpg' : notFound);
			case 'www.extrememusic.com': case 'extrememusic.com':
				if (!url.pathname.startsWith('/albums/')) break;
				return globalXHR(url).then(function(response) {
					let meta = getFromMeta(response.document);
					return meta ? meta.replace(/\/album\/\w+\//i, '/album/600/') : notFound;
				});
			// movie-related
			case 'www.imdb.com': case 'imdb.com':
				if (!['title/tt', 'name/nm'].some(cat => url.pathname.startsWith('/' + cat))) break;
				return globalXHR(url).then(function(response) {
					const galleryDetector = /\/mediaindex(?:[\/\?].*)?$/i, imgStripper = /\._V\d+_[\w\,]*(?=\.)/;
					if (!galleryDetector.test(response.finalUrl)) {
						let node = response.document.head.querySelector(':scope > script[type="application/ld+json"]');
						if (node != null) try {
							let image = JSON.parse(node.text).image;
							if (typeof image == 'string') return verifyImageUrl(image.replace(imgStripper, '')).catch(reason => notFound);
						} catch(e) { console.warn(e) }
						node = response.document.querySelector('meta[property="og:image"][content]');
						return node != null && !/\/imdb\w*_logo\./i.test(node.content) ?
							node.content.replace(imgStripper, '') : notFound;
					}
					var titleId = /\/title\/(tt\d+)\//i.test(response.finalUrl) && RegExp.$1;
					return titleId ? globalXHR(response.finalUrl.replace(galleryDetector, '/mediaviewer'), { responseType: 'text' }).then(function(response) {
						if (/\b(?:window\.IMDbMediaViewerInitialState)\s*=\s*(\{.*\});/.test(response.responseText)) try {
							let allImages = eval('(' + RegExp.$1 + ')').mediaviewer.galleries[titleId].allImages;
							if (allImages.length > 0) return allImages.map(image => image.src.replace(imgStripper, ''));
						} catch(e) { console.warn(e) }
						return notFound;
					}) : Promise.reject('title id not found');
				});
			case 'www.themoviedb.org': case 'themoviedb.org':
				if (!['movie', 'person'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(function(response) {
					let node = response.document.querySelector('meta[property="og:image"][content]');
					return verifyImageUrl(node.content.replace(/\/p\/\w+\//i, '/p/original/')).catch(function(reason) {
						node = response.document.querySelector('div.image_content > img');
						return verifyImageUrl(node.dataset.src.replace(/\/p\/\w+\//i, '/p/original/'))
							.catch(reason => verifyImageUrl(node.src.replace(/\/p\/\w+\//i, '/p/original/')))
							.catch(reason => verifyImageUrl(dataset.src)).catch(reason => node.src);
					}).catch(reason => notFound);
				});
			case 'www.omdb.org': case 'omdb.org':
				if (!['movie', 'person'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(function(response) {
					let node = response.document.querySelector('meta[property="og:image"][content]');
					return node != null ? verifyImageUrl(node.content) : notFound;
				});
			case 'www.thetvdb.com': case 'thetvdb.com':
				if (!['movies', 'series', 'people'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(response => verifyImageUrl(response.document.querySelector('img.img-responsive').src));
			case 'www.rottentomatoes.com': case 'rottentomatoes.com':
				if (!['m', 'celebrity', 'tv'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(function(response) {
					//if (/\b(?:context\.shell)\s*=\s*(\{.+?});/.test(response.responseText)) try {
					//	return JSON.parse(RegExp.$1).header.certifiedMedia.certifiedFreshMovieInTheater4.media.posterImg;
					//} catch(e) { console.warn(e) }
					return verifyImageUrl(response.document.querySelector('meta[property="og:image"]').content);
				});
			case 'www.bcdb.com': case 'bcdb.com':
				if (!['cartoon'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(response =>
																	 verifyImageUrl(document.location.protocol.concat(response.document.querySelector('meta[property="og:image"]').content)));
			case 'www.boxofficemojo.com': case 'boxofficemojo.com':
				if (!['releasegroup'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(response => verifyImageUrl(response.document.querySelector('div.mojo-primary-image img').src));
			case 'www.metacritic.com': case 'metacritic.com':
				return globalXHR(url).then(function(response) {
					let image = response.document.querySelector('meta[property="og:image"]').content;
					return verifyImageUrl(image.replace(/-\d+h(?=(?:\.\w+)?$)/, '')).catch(reason => image);
				});
			case 'www.csfd.cz': case 'csfd.cz':
				if (!['film', 'tvurce'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
				return globalXHR(url).then(function(response) {
					const gallerySel = 'div.ct-general.photos > div.content > ul > li > div.photo';
					if (response.document.querySelectorAll(gallerySel).length > 0) return new Promise(function(resolve, reject) {
						let urls = [], origin = new URL(response.finalUrl).origin;
						loadPage(response.finalUrl.replace(/\/strana-\d+(?=$|\/|\?)/, ''));

						function loadPage(url) {
							GM_xmlhttpRequest({ method: 'GET', url: url,
								onload: function(response) {
									if (response.status < 200 || response.status >= 400) return reject(defaultErrorHandler(response));
									let dom = domParser.parseFromString(response.responseText, 'text/html');
									Array.prototype.push.apply(urls, Array.from(dom.querySelectorAll(gallerySel))
										.map(div => /^(?:url)\s*\("?(.+?)"?\)$/i.test(div.style.backgroundImage) ?
											'https:'.concat(RegExp.$1).replace(/\?.*$/, '') : null));
									let nextPage = dom.querySelector('div.paginator > a.next[href]');
									if (nextPage != null) loadPage(origin.concat(nextPage.pathname, nextPage.search)); else resolve(urls);
								},
								onerror: response => { reject(defaultErrorHandler(response)) },
								ontimeout: response => { reject(defaultTimeoutHandler(response)) },
							});
						}
					});
					let img = ['img.film-poster', 'img.creator-photo', 'div.image > img']
						.reduce((acc, selector) => acc || response.document.querySelector(selector), null);
					return img != null ? verifyImageUrl(img.src.replace(/\?.*$/, '')) : notFound;
				});
			case 'www.fdb.cz': case 'fdb.cz':
				//if (!url.pathname.startsWith('/film/')) break;
				return globalXHR(url).then(function(response) {
					let a = response.document.querySelector('a.boxPlakaty');
					if (a == null) return Promise.reject('Invalid page structure');
					a.hostname = 'www.fdb.cz';
					return globalXHR(a.href).then(function(response) {
						let imgs = response.document.querySelectorAll('span#popup_plakaty > img');
						return imgs.length > 0 ? verifyImageUrl(imgs[0].src) : notFound;
					});
				});
			case 'www.caps-a-holic.com': case 'caps-a-holic.com':
				if (url.pathname != '/c.php') break;
				return globalXHR(url).then(function(response) {
					function heightExtractor(n) {
						let node = response.document.querySelector('div.main > div.c_table > div[style]:nth-of-type(' + n + ')');
						if (node != null && /\b(\d{3,})\s?[x×]\s?(\d{3,})\b/.test(node.textContent)) return parseInt(RegExp.$2);
						console.warn(response.finalUrl, 'failed to get resolution (' + n + ')', node);
						return null;
					}
					const baseUrl = 'https://caps-a-holic.com/c_image.php?a=0&x=0&y=0&l=1';
					return Array.from(response.document.querySelectorAll('div.main > div[style] > a > img.thumb')).map(function(img) {
						let query = new URLSearchParams(new URL(img.parentNode.href).search);
						return [
							`${baseUrl}&s=${parseInt(query.get('s1'))}&max_height=${heightExtractor(2)}`,
							`${baseUrl}&s=${parseInt(query.get('s2'))}&max_height=${heightExtractor(3)}`,
						];
					});
				});
			case 'www.screenshotcomparison.com': case 'screenshotcomparison.com':
				if (url.pathname.startsWith('/comparison/')) return globalXHR(url).then(function(response) {
					const origin = new URL(response.finalUrl).origin;
					return Array.from(response.document.querySelectorAll('div#img_nav li > a')).map(function(a) {
						return globalXHR(origin.concat(a.pathname), { responseType: 'text' }).then(response => [
							/\b(?:images)\[1\]='(\S+?)'/.test(response.responseText) && RegExp.$1,
							/\b(?:images)\[0\]='(\S+?)'/.test(response.responseText) && RegExp.$1,
						].map(src => origin.concat(src)));
					});
				});
				break;
			case 'www.dvdbeaver.com': case 'dvdbeaver.com':
				if (url.pathname.startsWith('/film')) return globalXHR(url).then(function(response) {
					const origin = new URL(response.finalUrl).origin;
					return Array.from(response.document.querySelectorAll('div[align="center"] > table > tbody > tr > td > a[target="_blank"] > img'))
						.map(img => origin.concat(img.parentNode.pathname));
				});
				break;
		}
		return globalXHR(url, { headers: { 'Referer': url.origin } }).then(function(response) {
			if (url.pathname.startsWith('/album/')
					&& response.document.querySelector('div#tabbed-content-group > div.content-listing > div.pad-content-listing') != null)
				return new Chevereto(url.hostname).galleryResolver(url);
			return getFromMeta(response.document) || notFound;
		});
	}));
}

function logFail(message) {
	let log = document.getElementById('ihh-console');
	if (log == null) {
		log = document.createElement('div');
		log.id = 'ihh-console';
		log.style = 'position: fixed; bottom: 20px; right: 20px; width: 64em; border: solid lightsalmon 4px;' +
			' background-color: antiquewhite; padding: 10px; opacity: 1;' +
			' transition: opacity 1000ms linear; -webkit-transition: opacity 1000ms linear;';
		document.body.append(log);
	} else if (log.hTimer) {
		clearTimeout(log.hTimer);
		log.style.opacity = 1;
	}
	let div = document.createElement('div');
	div.style = 'font: 600 9pt Verdana, sans-serif; color: red;';
	div.textContent = message;
	log.append(div);
	log.hTimer = setTimeout(function(node) {
		node.style.opacity = 0;
		node.hTimer = setTimeout(function(node) { node.remove() }, 1000, node);
	}, 30000, log);
}