// ==UserScript==
// @name         Image Host Helper
// @namespace    https://greasyfork.org/users/321857-anakunda
// @version      1.081
// @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

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

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', 'Jerking', 'Abload', 'VgyMe', 'LightShot', 'Slowpoke', 'FunkyIMG',
  'ImgURL', 'Gifyu', 'PostImage', 'Radikal', 'GeekPic', 'Z4A', 'PicaBox', 'PimpAndHost', 'Catbox', 'ImageBan',
  'SVGshare', 'ImageVenue', 'Imgur', 'FastPic',
].join(', ')) });
[
  ['passthepopcorn.me', [
	'PTPimg', 'PixHost', 'ImgBB', 'Jerking', 'Gifyu', 'Slowpoke', 'ImgBox', 'Abload', 'VgyMe', 'LightShot',
	'FunkyIMG', 'ImgURL', 'Radikal', 'GeekPic', 'Z4A', 'PicaBox', 'PimpAndHost', 'Catbox','ImageBan',
	'ImageVenue',
  ]],
  ['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 UI handlers
['image', 'cover', 'avatar'].forEach(function(attribute) {
  document.querySelectorAll('input[id*="' + attribute + '"], input[name*="' + attribute + '"]').forEach(setInputHandlers);
});
if (document.domain == 'tracker.czech-server.com') document.querySelectorAll('input[name="urlobr"]').forEach(setInputHandlers);
Array.from(document.getElementsByTagName('textarea')).forEach(setTextAreahandlers);
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);
  });
}
if (document.URL.includes('/reportsv2.php')) {
  setReportHandlers();
  var reportTypeSelect = document.querySelector('select#type');
  if (reportTypeSelect != null) reportTypeSelect.addEventListener('change', setReportHandlers);

  function setReportHandlers(evt) {
	setTimeout(function() {
	  document.querySelectorAll('input[id*="image"]').forEach(setInputHandlers);
	  document.querySelectorAll('textarea').forEach(setTextAreahandlers);
	}, 2000);
  }
}

// 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(() => localFetch('/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(() => localFetch('/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"]')
			.forEach(setTextAreahandlers);
		}, 1000);
	  }
	}, 1000);
	break;
}

function coverPreview(input, imgUrl, size) {
  var child = document.getElementById('cover-preview');
  if (child == null) {
	return; // not implemented so far
	if (!(input instanceof HTMLElement) || input.parentNode.previousElementSibling == null) return;
	var elem = document.createElement('div');
	elem.style = 'padding-top: 10px; float: right; width: 90%;';
	child = document.createElement('img');
	child.id = 'cover-preview';
	elem.append(child);
	var div = document.createElement('div');
	div.id = 'cover-size';
	elem.append(div);
	input.parentNode.previousElementSibling.append(document.createElement('br'));
	input.parentNode.previousElementSibling.append(elem);
  }
  if ((div = div || document.getElementById('cover-size')) == null) return;
  if (urlParser.test(imgUrl)) {
	child.onload = function(evt) {
	  this.onload = null;
	  if (!this.naturalWidth || !this.naturalHeight) return; // invalid image
	  (size > 0 ? Promise.resolve(size) : getRemoteFileSize(imgUrl)).then(function(size) {
		div.textContent = this.naturalWidth + '×' + this.naturalHeight + ' (' + formattedSize(size) + ')';
	  }.bind(this)).catch(reason => { div.textContent = this.naturalWidth + '×' + this.naturalHeight });
	};
	child.onerror = function(evt) {
	  this.onerror = null;
	  div.textContent = this.src = '';
	  console.warn('Image source cannot be updated:', evt, imgUrl);
	};
	child.src = imgUrl;
  } else div.textContent = child.src = '';
}

function setCover(url) {
  return verifyImageUrl(url).then(imageUrl => {
	this.value = imageUrl;
	coverPreview(this, imageUrl);
	this.disabled = true;
	return imageHosts.rehostImages([imageUrl]).then(singleImageGetter)
	  .then(imgUrl => { if (imgUrl != null) this.value = imgUrl },
			reason => { logFail(reason + ' (not rehosted)') })
	  .then(() => { this.disabled = false; return imageUrl; });
  });
}

function inputDataHandler(evt, data) {
  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 size = data.files[0].size, lastPct, lastUpdate, current;
	imageHosts.uploadImages([data.files[0]], function(worker, param = null) {
	  if (param && typeof param == 'object') {
		if (param.readyState > 1 || current != undefined && worker !== current) return;
		if (Date.now() - 100 < lastUpdate) return;
		let pct = Math.floor(Math.min(param.done * 100 / param.total, 100));
		if (pct <= lastPct) return;
		lastPct = pct;
		evt.target.value = 'Uploading... [' + pct + '%]';
		lastUpdate = Date.now();
	  } else if (typeof param != 'number') {
		lastPct = lastUpdate = undefined;
		current = worker;
		evt.target.value = 'Uploading...';
	  }
	}).then(singleImageGetter).then(function(imgUrl) {
	  evt.target.value = imgUrl;
	  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);
	  coverPreview(evt.target, imgUrl, size);
	}, 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.value = imageUrl;
	  coverPreview(evt.target, imageUrl);
	  checkImageSize(imageUrl, evt.target).then(function(imageUrl) {
		evt.target.disabled = true;
		return imageHosts.rehostImages([imageUrl]).then(singleImageGetter)
		  .then(imgUrl => imgUrl != null ? (evt.target.value = imgUrl) : imageUrl,
				reason => { 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 textAreaDropHandler(evt) {
  if (evt.dataTransfer == null || 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));
	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;
	Promise.all(content.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());
		RHProgressBar.prototype.cleanUp.call(progressBar);
		evt.target.disabled = false;
	  });
	});
	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],
		['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) {
		var radio = document.createElement('input');
		radio.type = 'radio';
		radio.name = 'template';
		radio.value = item[1];
		radio.style = 'margin: 5px 15px 5px 0px; cursor: pointer;';
		var 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);
		var 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) {
		var 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 }, 0);

	  function disableItem(...n) {
		n.forEach(function(n) {
		  var 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;
	  var 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;
		}
	  });
	  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 == null) 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));
	imageHosts.uploadImages(images, ULProgressBar.prototype.update.bind(progressBar))
	  .then(insert, 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.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) {
// 		insert(results, arrayGrouping(resolved).flatten());
// 		progressBar.cleanUp.call(progressBar);
// 		evt.target.disabled = false;
// 	  });
// 	});
// 	evt.stopPropagation();
// 	return false;
  }
  return true;

  function insert(results, groups = undefined) {
	var selStart = evt.target.selectionStart, phpBB = '';
	results.forEach(function(result, index) {
	  var 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(imageUrl, node, size) {
  var imageSizeReduce = GM_getValue('image_size_reduce_threshold');
  if (!(imageSizeReduce > 0)) return Promise.resolve(imageUrl);
  if (!(node instanceof Node)) node = null;
  if (node != null) node.disabled = true;
  return (size > 0 ? Promise.resolve(size) : getRemoteFileSize(imageUrl)).then(function(size) {
	if (size <= imageSizeReduce * 2**20) return Promise.resolve(imageUrl);
	return reduceImageSize(imageUrl, GM_getValue('image_reduce_maxheight', 2160),
		GM_getValue('image_reduce_jpegquality', 90)).then(function(output) {
	  if (node != null) node.value = output.uri;
	  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 output.uri;
	});
  }).catch(function(reason) {
	logFail('failed to get remote image size or optimize the image: ' + reason + ' (size reduction was not performed)');
	return imageUrl;
  }).then(function(finalUrl) {
	if (node != null) node.disabled = false;
	return finalUrl;
  });
}

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(dom) {
	  var meta = dom instanceof Document ? [
		'meta[property="og:image"][content]',
		'meta[name="og:image"][content]',
		'meta[itemprop="og:image"][content]',
		'meta[itemprop="image"][content]',
	  ].reduce((node, selector) => node || dom.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 globalFetch(url).then(function(response) {
	  var ref = response.document.querySelector('div#tralbumArt > a.popupImage');
	  ref = ref != null ? ref.href : getFromMeta(response.document);
	  return ref ? Promise.resolve(ref.replace(/_\d+(?=\.\w+$)/, '_0')) : notFound;
	}); else if (url.hostname.endsWith('7digital.com') && url.pathname.startsWith('/artist/'))
	  return globalFetch(url).then(function(response) {
		var img = response.document.querySelector('img[itemprop="image"]');
		return img != null ? img.src : notFound;
	  });
	else if (url.hostname.endsWith('geekpic.net')) return globalFetch(url).then(function(response) {
	  var a = response.document.querySelector('div.img-upload > a.mb');
	  return a != null ? a.href : notFound;
	}); else if (url.hostname.endsWith('qq.com') && url.pathname.includes('/album/')) return globalFetch(url).then(function(response) {
	  var img = response.document.querySelector('img#albumImg');
	  return img != null ? img.src.replace(/(?:_\d+)?(\.\w+)(?:\?.*)?$/, '$1').replace(/R\d+x\d+/, '') : notFound;
	}); else switch (url.hostname) {
	  // general image hostings
	  case 'www.imgur.com': case 'imgur.com':
		if (url.pathname.startsWith('/a/')) return globalFetch(url, { responseType: 'text' }).then(function(response) {
		  if (/^\s*(?:image)\s*:\s*(\{.+\}),\s*$/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 globalFetch(url).then(response => response.document.querySelector('link[rel="image_src"]').href);
	  case 'pixhost.to':
		if (url.pathname.startsWith('/gallery/')) return globalFetch(url).then(response =>
			Promise.all(Array.from(response.document.querySelectorAll('div.images > a')).map(a => imageUrlResolver(a.href))));
		if (url.pathname.startsWith('/show/')) return globalFetch(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 globalFetch(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.galleryResolver(url);
	  case 'www.imagevenue.com': case 'imagevenue.com':
		return globalFetch(url, { headers: { Referer: 'http://www.imagevenue.com/' } }).then(function(response) {
		  var 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 globalFetch(url).then(response => response.document.querySelector('a#share-dl').href);
	  case 'www.flickr.com': case 'flickr.com':
		if (!url.pathname.startsWith('/photos/')) break;
		return globalFetch(url).then(function(response) {
		  if (/\b(?:modelExport)\s*:\s*(\{.+\}),/.test(response.responseText)) try {
			var urls = JSON.parse(RegExp.$1).main['photo-models'].map(function(photoModel) {
			  var 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 globalFetch(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.$1 + '/galleries/' + galleryId + '/items?sort=position&sort_direction=asc&rpp=999');
		  });
		}
		break;
	  case 'www.pxhere.com': case 'pxhere.com':
		if (url.pathname.includes('/photo/')) return globalFetch(url).then(response =>
			JSON.parse(response.document.querySelector('div.hub-media-content > script[type="application/ld+json"]').text).contentUrl);
		else if (url.pathname.includes('/collection/')) return pxhereCollectionResolver(url);
		break;
	  case 'www.unsplash.com': case 'unsplash.com':
		if (url.pathname.startsWith('/photos/')) return globalFetch(url.origin + url.pathname + '/download', { method: 'HEAD' })
		  .then(response => response.finalUrl.replace(/\?.*$/, ''));
		else if (url.pathname.includes('/collections/')) return unsplashCollectionResolver(url);
		break;
	  case 'www.pexels.com': case 'pexels.com':
		if (url.pathname.startsWith('/photo/')) return globalFetch(url)
		  .then(response => response.document.querySelector('meta[property="og:image"][content]').content.replace(/\?.*$/, ''));
		else if (url.pathname.startsWith('/collections/')) return pexelsCollectionResolver(url);
		break;
	  case 'www.piwigo.org': case 'piwigo.org':
		/*if (url.pathname.includes('/picture/')) */return globalFetch(url, { responseType: 'text' }).then(function(response) {
		  if (/^(?:RVAS)\s*=\s*(\{[\S\s]+?\})$/m.test(response.responseText)) try {
			var derivatives = eval('(' + RegExp.$1 + ')').derivatives.sort((a, b) => b.w * b.h - a.w * a.h);
			return derivatives.length > 0 ? 'https://piwigo.org/demo/'.concat(derivatives[0].url) : notFound;
		  } catch(e) { console.warn(e) }
		  return Promise.reject('Unexpected page structure');
		});
		break;
	  case 'www.freeimages.com': case 'freeimages.com':
		if (url.pathname.startsWith('/photo/')) return globalFetch(url).then(function(response) {
		  var types = Array.from(response.document.querySelectorAll('ul.download-type > li > span.reso'))
		  	.sort((a, b) => eval(b.textContent.replace('x', '*')) - eval(a.textContent.replace('x', '*')));
		  return types.length > 0 ? url.origin.concat(types[0].parentNode.querySelector('a').pathname) : notFound;
		});
		break;
	  case 'redacted.ch':
		if (url.pathname != '/image.php') break;
		return globalFetch(url, { method: 'HEAD' }).then(response => response.finalUrl);
	  case 'demo.cloudimg.io':
		if (!/\b(https?:\/\/\S+)$/.test(url.pathname.concat(url.search, url.hash))) break;
		var 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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var elem = response.document.querySelector('img#image');
		  if (elem == null) return notFound;
		  var src = new URL(elem.src);
		  return imageHostHandlers.abload.origin + src.pathname + src.search;
		});
	  case 'fastpic.ru':
		if (url.pathname.startsWith('/view/'))
		  return globalFetch(url).then(response => imageUrlResolver(response.document.querySelector('a.img-a').href));
		if (url.pathname.startsWith('/fullview/')) return globalFetch(url).then(function(response) {
		  var node = response.document.getElementById('image');
		  if (node != null) return node.src;
		  return /\bvar\s+loading_img\s*=\s*'(\S+?)';/.test(response.responseText) ? RegExp.$1 : notFound;
		});
		break;
	  case 'www.radikal.ru': case 'radikal.ru': case 'a.radikal.ru':
		return globalFetch(url).then(response => response.document.querySelector('div.mainBlock img').src);
	  case 'imageban.ru': case 'ibn.im':
		return globalFetch(url).then(response => response.document.querySelector('a[download]').href);
	  case 'svgshare.com':
		return globalFetch(url).then(function(response) {
		  var link;
			response.document.querySelectorAll('ul#shares > li > input[type="text"]')
			  .forEach(input => { if (!link && /^(?:https?:\/\/.+\.svg)$/.test(input.value)) link = input.value; });
		  return link || notFound;
		});
	  case 'slow.pics':
		if (!url.pathname.startsWith('/c/')) break;
		return globalFetch(url).then(function(response) {
		  var 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 => globalFetch(url.origin + a.pathname).then(response =>
			Array.from(response.document.querySelectorAll('div#preload-images > img')).map(img => img.src))));
		  return notFound;
		});
	  // music-related
	  case 'www.musicbrainz.org': case 'musicbrainz.org':
		if (!['release', 'release-group'].some(branch => url.pathname.includes('/' + branch + '/'))) break;
		return globalFetch(url).then(function(response) {
		  var node = response.document.querySelector('a.artwork-image');
		  if (node != null) return node.href;
		  return (node = response.document.querySelector('div.cover-art > img')) != null ? node.src : notFound;
		});
	  case 'music.apple.com':
		if (!/^https?:\/\/(?:\w+\.)*apple\.com\/.*\/(\d+)(?=$|\?)/i.test(url)) break;
		return globalFetch(url).then(function(response) {
		  var meta = response.document.querySelector('meta[property="og:image"][content]');
		  if (meta == null || !meta.content) return notFound;
		  return verifyImageUrl(meta.content.replace(/\/\d+x\d+\w*(?=\.\w+$)/, '/100000x100000-999')).catch(reason => meta.content);
		});
	  case 'www.deezer.com': case 'deezer.com':
		return globalFetch(url).then(function(response) {
		  var meta = response.document.querySelector('meta[property="og:image"][content]');
		  if (meta == null || !meta.content) return notFound;
		  return verifyImageUrl(meta.content.replace(/\/\d+x\d+\w*(?=\.\w+$)/, '/1400x1400-000000-100-0-0'))
			.catch(reason => meta.content);
		});
	  case 'www.qobuz.com': case 'qobuz.com':
		if (!url.pathname.includes('/album/')) break;
		return globalFetch(url).then(function(response) {
		  var img = response.document.querySelector('div.album-cover > img');
		  if (img == null) return notFound;
		  return verifyImageUrl(img.src.replace(/_\d{3}(?=\.\w+$)/, '_org'))
			.catch(reason => verifyImageUrl(img.src.replace(/_\d{3}(?=\.\w+$)/, '_max')))
			.catch(reason => img.src);
		});
	  case 'www.discogs.com': case 'discogs.com':
		return globalFetch(url).then(function(response) {
		  const dcOrigin = 'https://www.discogs.com';
		  let master = response.document.getElementById('all-versions-link');
		  return (master != null ?
			globalFetch(dcOrigin + master.pathname).then(response => getFromMeta(response.document) || notFound)
		  		: Promise.reject('no master')).catch(reason => getFromMeta(response.document) || notFound)
		  	.then(imgUrl => /^(?:https?):\/\/(?:img\.discogs\.com)\/.+\/(\S+?\.\w+)\b/i.test(imgUrl) ?
				dcOrigin + '/image/' + RegExp.$1 : imgUrl);
		});
	  case 'www.boomkat.com': case 'boomkat.com':
		if (!url.pathname.startsWith('/products/')) break;
		return globalFetch(url).then(function(response) {
		  var img = response.document.querySelector('img[itemprop="image"]');
		  if (img == null) return notFound;
		  return verifyImageUrl(img.src.replace(/\/large\//i, '/original/')).catch(reason => img.src);
		});
	  case 'www.bleep.com': case 'bleep.com':
		if (!url.pathname.startsWith('/release/')) break;
		return globalFetch(url).then(function(response) {
		  var meta = getFromMeta(response.document);
		  return meta ? verifyImageUrl(meta.replace(/\/r\/[a-z]\//i, '/r/')).catch(reason => meta) : notFound;
		});
	  case 'www.soundcloud.com': case 'soundcloud.com':
		return globalFetch(url).then(function(response) {
		  var meta = getFromMeta(response.document);
		  return meta ? verifyImageUrl(meta.replace(/\bt\d+x\d+(?=\.\w+$)/, 'original')).catch(reason => meta) : notFound;
		});
	  case 'www.prestomusic.com': case 'prestomusic.com':
		if (!url.pathname.includes('/products/')) break;
		return globalFetch(url)
		  .then(response => verifyImageUrl(response.document.querySelector('div.c-product-block__aside > a').href.replace(/\?\d+$/)));
	  case 'www.bontonland.cz':case 'bontonland.cz':
		return globalFetch(url).then(response => response.document.querySelector('a.detailzoom').href);
	  case 'www.nativedsd.com':case 'nativedsd.com':
		if (!url.pathname.includes('/albums/')) break;
		return globalFetch(url).then(response => response.document.querySelector('a#album-cover').href);
	  case 'www.prostudiomasters.com': case 'prostudiomasters.com':
		if (!url.pathname.includes('/album/')) break;
		return globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var meta = getFromMeta(response.document);
		  return meta ? meta.replace(/\/s\d+\//, '/s0/') : notFound;
		})
	  case 'store.acousticsounds.com':
		return globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(response => verifyImageUrl)(response.document.querySelector('div.obrazekDetail > img').src);
	  case 'www.beatport.com': case 'classic.beatport.com': case 'beatport.com':
		if (!url.pathname.includes('/release/')) break;
		return globalFetch(url).then(function(response) {
		  var 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.supraphonline.cz': case 'supraphonline.cz':
		if (!url.pathname.includes('/album/')) break;
		return globalFetch(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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var 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.$1).then(response => response.json())
		  .then(result => result.status.toLowerCase() == 'ok' ? result.cover : Promise.reject(result.status));
	  case 'www.muziekweb.nl': case 'muziekweb.nl':
		if (!/\/Link\/(\w+)\b/i.test(url)) break;
		return globalFetch(url).then(function(response) {
		  let meta = getFromMeta(response.document)
		  return meta ? meta.replace(/\/COVER\/\w+\b/i, '/COVER/SUPERLARGE') : notFound;
		});
	  // movie-related
	  case 'www.imdb.com': case 'imdb.com':
		if (!['title/tt', 'name/nm'].some(cat => url.pathname.startsWith('/' + cat))) break;
		return globalFetch(url).then(function(response) {
		  const galleryDetector = /\/mediaindex(?:[\/\?].*)?$/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 ? globalFetch(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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(url).then(function(response) {
		  var 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 globalFetch(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 globalFetch(url).then(function(response) {
// 		  if (/\b(?:context\.shell)\s*=\s*(\{.+?});/.test(response.responseText)) try {
// 			return JSON.parse(RegExp.$1).header.certifiedMedia.certifiedFreshMovieInTheater4.media.posterImg;
// 		  } catch(e) { console.warn(e) }
		  return verifyImageUrl(response.document.querySelector('meta[property="og:image"]').content);
		});
	  case 'www.bcdb.com': case 'bcdb.com':
		if (!['cartoon'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
		return globalFetch(url).then(response =>
			verifyImageUrl(document.location.protocol.concat(response.document.querySelector('meta[property="og:image"]').content)));
	  case 'www.boxofficemojo.com': case 'boxofficemojo.com':
		if (!['releasegroup'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
		return globalFetch(url).then(response => verifyImageUrl(response.document.querySelector('div.mojo-primary-image img').src));
	  case 'www.metacritic.com': case 'metacritic.com':
		return globalFetch(url).then(function(response) {
		  var image = response.document.querySelector('meta[property="og:image"]').content;
		  return verifyImageUrl(image.replace(/-\d+h(?=(?:\.\w+)?$)/, '')).catch(reason => image);
		});
	  case 'www.csfd.cz': case 'csfd.cz':
		if (!['film', 'tvurce'].some(cat => url.pathname.startsWith('/' + cat + '/'))) break;
		return globalFetch(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) {
			var urls = [], domParser = new DOMParser, 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));
				  var 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));
				  var 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)) },
			  });
			}
		  });
		  var 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 globalFetch(url).then(function(response) {
		  var a = response.document.querySelector('a.boxPlakaty');
		  if (a == null) return Promise.reject('Invalid page structure');
		  a.hostname = 'www.fdb.cz';
		  return globalFetch(a.href).then(function(response) {
			var 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 globalFetch(url).then(function(response) {
		  function heightExtractor(n) {
			var 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.$2);
			console.warn(response.finalUrl, 'failed to get resolution (' + n + ')', node);
			return null;
		  }
		  const baseUrl = 'https://caps-a-holic.com/c_image.php?a=0&x=0&y=0&l=1';
		  return Array.from(response.document.querySelectorAll('div.main > div[style] > a > img.thumb')).map(function(img) {
			var query = new URLSearchParams(new URL(img.parentNode.href).search);
			return [
			  `${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 globalFetch(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 globalFetch(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 globalFetch(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 globalFetch(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) {
  var 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;
  }
  var 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);
}