FressRSS/p/scripts/main.js

// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-3.0
"use strict";
/* jshint esversion:6, strict:global */

//<Polyfills>
if (!document.scrollingElement) document.scrollingElement = document.documentElement;
if (!NodeList.prototype.forEach) NodeList.prototype.forEach = Array.prototype.forEach;
if (!Element.prototype.matches) Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.mozMatchesSelector || Element.prototype.webkitMatchesSelector;
if (!Element.prototype.closest) Element.prototype.closest = function (s) {
		let el = this;
		do {
			if (el.matches(s)) return el;
			el = el.parentElement;
		} while (el);
		return null;
	};
if (!Element.prototype.remove) Element.prototype.remove = function () { if (this.parentNode) this.parentNode.removeChild(this); };
//</Polyfills>

//<Utils>
function xmlHttpRequestJson(req) {
	let json = req.response;
	if (req.responseType !== 'json') {	//IE11
		try { json = JSON.parse(req.responseText); }
		catch (ex) { json = null; }
	}
	return json;
}
//</Utils>

//<Global context>
var context;

(function parseJsonVars() {
	const jsonVars = document.getElementById('jsonVars'),
		json = JSON.parse(jsonVars.innerHTML);
	jsonVars.outerHTML = '';
	context = json.context;
	context.ajax_loading = false;
	context.i18n = json.i18n;
	context.shortcuts = json.shortcuts;
	context.urls = json.urls;
	context.icons = json.icons;
	context.icons.read = decodeURIComponent(context.icons.read);
	context.icons.unread = decodeURIComponent(context.icons.unread);
}());
//</Global context>

function badAjax(reload) {
	openNotification(context.i18n.notif_request_failed, 'bad');
	if (reload) {
		setTimeout(function () { location.reload(); }, 2000);
	}
	return true;
}

function needsScroll(elem) {
	const winBottom = document.scrollingElement.scrollTop + document.scrollingElement.clientHeight,
		elemTop = elem.offsetParent.offsetTop + elem.offsetTop,
		elemBottom = elemTop + elem.offsetHeight;
	return (elemTop < document.scrollingElement.scrollTop || elemBottom > winBottom) ?
		elemTop - (document.scrollingElement.clientHeight / 2) : 0;
}

function str2int(str) {
	if (!str) {
		return 0;
	}
	return parseInt(str.replace(/\D/g, ''), 10) || 0;
}

function numberFormat(nStr) {
	if (nStr < 0) {
		return 0;
	}
	// http://www.mredkj.com/javascript/numberFormat.html
	nStr += '';
	const x = nStr.split('.'),
		x2 = x.length > 1 ? '.' + x[1] : '',
		rgx = /(\d+)(\d{3})/;
	let x1 = x[0];
	while (rgx.test(x1)) {
		x1 = x1.replace(rgx, '$1' + ' ' + '$2');
	}
	return x1 + x2;
}

function incLabel(p, inc, spaceAfter) {
	const i = str2int(p) + inc;
	return i > 0 ? ((spaceAfter ? '' : ' ') + '(' + numberFormat(i) + ')' + (spaceAfter ? ' ' : '')) : '';
}

function incUnreadsFeed(article, feed_id, nb) {
	//Update unread: feed
	let elem = document.getElementById(feed_id),
		feed_unreads = elem ? str2int(elem.getAttribute('data-unread')) : 0,
		feed_priority = elem ? str2int(elem.getAttribute('data-priority')) : 0;
	if (elem) {
		elem.setAttribute('data-unread', feed_unreads + nb);
		elem = elem.querySelector('.item-title');
		if (elem) {
			elem.setAttribute('data-unread', numberFormat(feed_unreads + nb));
		}
	}

	//Update unread: category
	elem = document.getElementById(feed_id).closest('.category');
	feed_unreads = elem ? str2int(elem.getAttribute('data-unread')) : 0;
	if (elem) {
		elem.setAttribute('data-unread', feed_unreads + nb);
		elem = elem.querySelector('.title');
		if (elem) {
			elem.setAttribute('data-unread', numberFormat(feed_unreads + nb));
		}
	}

	//Update unread: all
	if (feed_priority > 0) {
		elem = document.querySelector('#aside_feed .all .title');
		if (elem) {
			feed_unreads = elem ? str2int(elem.getAttribute('data-unread')) : 0;
			elem.setAttribute('data-unread', numberFormat(feed_unreads + nb));
		}
	}

	//Update unread: favourites
	if (article && article.closest('div').classList.contains('favorite')) {
		elem = document.querySelector('#aside_feed .favorites .title');
		if (elem) {
			feed_unreads = elem ? str2int(elem.getAttribute('data-unread')) : 0;
			elem.setAttribute('data-unread', numberFormat(feed_unreads + nb));
		}
	}

	let isCurrentView = false;
	// Update unread: title
	document.title = document.title.replace(/^((?:\([ 0-9]+\) )?)/, function (m, p1) {
		const feed = document.getElementById(feed_id);
		if (article || feed.closest('.active')) {
			isCurrentView = true;
			return incLabel(p1, nb, true);
		} else if (document.querySelector('.all.active')) {
			isCurrentView = feed_priority > 0;
			return incLabel(p1, feed_priority > 0 ? nb : 0, true);
		} else {
			return p1;
		}
	});
	return isCurrentView;
}

function incUnreadsTag(tag_id, nb) {
	let t = document.getElementById(tag_id);
	if (t) {
		let unreads = str2int(t.getAttribute('data-unread'));
		t.setAttribute('data-unread', unreads + nb);
		t.querySelector('.item-title').setAttribute('data-unread', numberFormat(unreads + nb));
	}
	t = document.querySelector('.category.tags .title');
	if (t) {
		let unreads = str2int(t.getAttribute('data-unread'));
		t.setAttribute('data-unread', numberFormat(unreads + nb));
	}
}

function removeArticle(div) {
	if (!div || div.classList.contains('not_read') || (context.auto_mark_article && div.classList.contains('active'))) {
		return;
	}
	let scrollTop = box_to_follow.scrollTop;
	let dirty = false;
	const p = div.previousElementSibling,
		n = div.nextElementSibling;
	if (p && p.classList.contains('day') && n && n.classList.contains('day')) {
		scrollTop -= p.offsetHeight;
		dirty = true;
		p.remove();
	}
	if (div.offsetHeight > 0 && div.offsetParent.offsetTop + div.offsetTop + div.offsetHeight < scrollTop) {
		scrollTop -= div.offsetHeight;
		dirty = true;
	}
	div.remove();
	if (dirty) {
		box_to_follow.scrollTop = scrollTop;
	}
}

var pending_entries = {},
	mark_read_queue = [];

function send_mark_read_queue(queue, asRead, callback) {
	const req = new XMLHttpRequest();
	req.open('POST', '.?c=entry&a=read' + (asRead ? '' : '&is_read=0'), true);
	req.responseType = 'json';
	req.onerror = function (e) {
			for (let i = queue.length - 1; i >= 0; i--) {
				delete pending_entries['flux_' + queue[i]];
			}
			badAjax(this.status == 403);
		};
	req.onload = function (e) {
			if (this.status != 200) {
				return req.onerror(e);
			}
			const json = xmlHttpRequestJson(this);
			if (!json) {
				return req.onerror(e);
			}
			for (let i = queue.length - 1; i >= 0; i--) {
				const div = document.getElementById('flux_' + queue[i]),
					myIcons = context.icons;
				let inc = 0;
				if (div.classList.contains('not_read')) {
					div.classList.remove('not_read');
					div.querySelectorAll('a.read').forEach(function (a) {
							a.href = a.href.replace('&is_read=0', '') + '&is_read=1';
						});
					div.querySelectorAll('a.read > .icon').forEach(function (img) { img.outerHTML = myIcons.read; });
					inc--;
					if (context.auto_remove_article) {
						removeArticle(div);
					}
				} else {
					div.classList.add('not_read');
					div.classList.add('keep_unread');	//Split for IE11
					div.querySelectorAll('a.read').forEach(function (a) {
							a.href = a.href.replace('&is_read=1', '');
						});
					div.querySelectorAll('a.read > .icon').forEach(function (img) { img.outerHTML = myIcons.unread; });
					inc++;
				}
				let feed_link = div.querySelector('.website > a, a.website');
				if (feed_link) {
					const feed_url = feed_link.href,
						feed_id = feed_url.substr(feed_url.lastIndexOf('f_'));
					incUnreadsFeed(div, feed_id, inc);
				}
				delete pending_entries['flux_' + queue[i]];
			}
			faviconNbUnread();
			if (json.tags) {
				const tagIds = Object.keys(json.tags);
				for (let i = tagIds.length - 1; i >= 0; i--) {
					let tagId = tagIds[i];
					incUnreadsTag(tagId, (asRead ? -1 : 1) * json.tags[tagId].length);
				}
			}
			onScroll();
			if (callback) {
				callback();
			}
		};
	req.setRequestHeader('Content-Type', 'application/json');
	req.send(JSON.stringify({
			ajax: true,
			_csrf: context.csrf,
			id: queue,
		}));
}

var send_mark_read_queue_timeout = 0;

function send_mark_queue_tick(callback) {
	send_mark_read_queue_timeout = 0;
	const queue = mark_read_queue.slice(0);
	mark_read_queue = [];
	send_mark_read_queue(queue, true, callback);
}
var delayedFunction = send_mark_queue_tick;

function delayedClick(a) {
	if (a) {
		delayedFunction(function () { a.click(); });
	}
}

function mark_read(div, only_not_read, asBatch) {
	if (!div || !div.id || context.anonymous ||
		(only_not_read && !div.classList.contains('not_read'))) {
		return false;
	}
	if (pending_entries[div.id]) {
		return false;
	}
	pending_entries[div.id] = true;

	const asRead = div.classList.contains('not_read'),
		entryId = div.id.replace(/^flux_/, '');
	if (asRead && asBatch) {
		mark_read_queue.push(entryId);
		if (send_mark_read_queue_timeout == 0) {
			send_mark_read_queue_timeout = setTimeout(function () { send_mark_queue_tick(null); }, 1000);
		}
	} else {
		const queue = [ entryId ];
		send_mark_read_queue(queue, asRead);
	}
}

function mark_previous_read(div) {
	while (div) {
		mark_read(div, true, true);
		div = div.previousElementSibling;
	}
}

function mark_favorite(div) {
	if (!div) {
		return false;
	}

	let a = div.querySelector('a.bookmark'),
		url = a ? a.href : '';
	if (!url) {
		return false;
	}

	if (pending_entries[div.id]) {
		return false;
	}
	pending_entries[div.id] = true;

	const req = new XMLHttpRequest();
	req.open('POST', url, true);
	req.responseType = 'json';
	req.onerror = function (e) {
			delete pending_entries[div.id];
			badAjax(this.status == 403);
		};
	req.onload = function (e) {
			if (this.status != 200) {
				return req.onerror(e);
			}
			const json = xmlHttpRequestJson(this);
			if (!json) {
				return req.onerror(e);
			}
			let inc = 0;
			if (div.classList.contains('favorite')) {
				div.classList.remove('favorite');
				inc--;
			} else {
				div.classList.add('favorite');
				inc++;
			}
			div.querySelectorAll('a.bookmark').forEach(function (a) { a.href = json.url; });
			div.querySelectorAll('a.bookmark > .icon').forEach(function (img) { img.outerHTML = json.icon; });

			const favourites = document.querySelector('#aside_feed .favorites .title');
			if (favourites) {
				favourites.textContent = favourites.textContent.replace(/((?: \([ 0-9]+\))?\s*)$/, function (m, p1) {
					return incLabel(p1, inc, false);
				});
			}

			if (div.classList.contains('not_read')) {
				const elem = document.querySelector('#aside_feed .favorites .title'),
					feed_unreads = elem ? str2int(elem.getAttribute('data-unread')) : 0;
				if (elem) {
					elem.setAttribute('data-unread', numberFormat(feed_unreads + inc));
				}
			}

			delete pending_entries[div.id];
		};
	req.setRequestHeader('Content-Type', 'application/json');
	req.send(JSON.stringify({
			ajax: true,
			_csrf: context.csrf,
		}));
}

var freshrssOpenArticleEvent = document.createEvent('Event');
freshrssOpenArticleEvent.initEvent('freshrss:openArticle', true, true);

function toggleContent(new_active, old_active, skipping) {
	// If skipping, move current without activating or marking as read
	if (!new_active) {
		return;
	}

	if (context.does_lazyload && !skipping) {
		new_active.querySelectorAll('img[data-original], iframe[data-original]').forEach(function (el) {
			el.src = el.getAttribute('data-original');
			el.removeAttribute('data-original');
		});
	}

	if (old_active !== new_active) {
		if (!skipping) {
			new_active.classList.add('active');
		}
		new_active.classList.add('current');
		if (old_active) {
			old_active.classList.remove('active');
			old_active.classList.remove('current');	//Split for IE11
			if (context.auto_remove_article) {
				removeArticle(old_active);
			}
		}
	} else {
		new_active.classList.toggle('active');
	}

	const relative_move = context.current_view === 'global',
		box_to_move = relative_move ? document.getElementById('panel') : document.scrollingElement;

	if (context.sticky_post) {	//Stick the article to the top when opened
		let prev_article = new_active.previousElementSibling,
			new_pos = new_active.offsetParent.offsetTop + new_active.offsetTop;

		if (prev_article && new_active.offsetTop - prev_article.offsetTop <= 150) {
			new_pos = prev_article.offsetParent.offsetTop + prev_article.offsetTop;
			if (relative_move) {
				new_pos -= box_to_move.offsetTop;
			}
		}

		if (skipping) {
			// when skipping, this feels more natural if it's not so near the top
			new_pos -= document.body.clientHeight / 4;
		}
		if (relative_move) {
			new_pos += box_to_move.scrollTop;
		}
		box_to_move.scrollTop = new_pos;
	}

	if (new_active.classList.contains('active') && !skipping) {
		if (context.auto_mark_article) {
			mark_read(new_active, true, true);
		}
		new_active.dispatchEvent(freshrssOpenArticleEvent);
	}
	onScroll();
}

function prev_entry(skipping) {
	const old_active = document.querySelector('.flux.current');
	let new_active = old_active;
	if (new_active) {
		do new_active = new_active.previousElementSibling;
		while (new_active && !new_active.classList.contains('flux'));
		if (!new_active) {
			prev_feed();
		}
	} else {
		new_active = document.querySelector('.flux');
	}
	toggleContent(new_active, old_active, skipping);
}

function next_entry(skipping) {
	const old_active = document.querySelector('.flux.current');
	let new_active = old_active;
	if (new_active) {
		do new_active = new_active.nextElementSibling;
		while (new_active && !new_active.classList.contains('flux'));
		if (!new_active) {
			next_feed();
		}
	} else {
		new_active = document.querySelector('.flux');
	}
	toggleContent(new_active, old_active, skipping);
}

function prev_feed() {
	let found = false;
	let adjacent = null;
	const feeds = document.querySelectorAll('#aside_feed .feed');
	for (let i = feeds.length - 1; i >= 0; i--) {
		const feed = feeds[i];
		if (feed.classList.contains('active')) {
			found = true;
			continue;
		}
		if (!found) {
			continue;
		}
		if (getComputedStyle(feed).display === 'none') {
			continue;
		}
		if (feed.dataset.unread != 0) {
			return delayedClick(feed.querySelector('a.item-title'));
		} else if (adjacent === null) {
			adjacent = feed;
		}
	}
	if (found) {
		delayedClick(adjacent.querySelector('a.item-title'));
	} else {
		last_feed();
	}
}

function next_feed() {
	let found = false;
	let adjacent = null;
	const feeds = document.querySelectorAll('#aside_feed .feed');
	for (let i = 0; i < feeds.length; i++) {
		const feed = feeds[i];
		if (feed.classList.contains('active')) {
			found = true;
			continue;
		}
		if (!found) {
			continue;
		}
		if (getComputedStyle(feed).display === 'none') {
			continue;
		}
		if (feed.dataset.unread != 0) {
			return delayedClick(feed.querySelector('a.item-title'));
		} else if (adjacent === null) {
			adjacent = feed;
		}
	}
	if (found) {
		delayedClick(adjacent.querySelector('a.item-title'));
	} else {
		first_feed();
	}
}

function first_feed() {
	const a = document.querySelector('#aside_feed .category.active .feed:not([data-unread="0"]) a.item-title');
	delayedClick(a);
}

function last_feed() {
	const links = document.querySelectorAll('#aside_feed .category.active .feed:not([data-unread="0"]) a.item-title');
	if (links && links.length > 0) {
		delayedClick(links[links.length - 1]);
	}
}

function prev_category() {
	const active_cat = document.querySelector('#aside_feed .category.active');
	if (active_cat) {
		let cat = active_cat;
		do cat = cat.previousElementSibling;
		while (cat && getComputedStyle(cat).display === 'none');
		if (cat) {
			delayedClick(cat.querySelector('a.title'));
		}
	} else {
		last_category();
	}
}

function next_category() {
	const active_cat = document.querySelector('#aside_feed .category.active');
	if (active_cat) {
		let cat = active_cat;
		do cat = cat.nextElementSibling;
		while (cat && getComputedStyle(cat).display === 'none');
		if (cat) {
			delayedClick(cat.querySelector('a.title'));
		}
	} else {
		first_category();
	}
}

function first_category() {
	const a = document.querySelector('#aside_feed .category:not([data-unread="0"]) a.title');
	delayedClick(a);
}

function last_category() {
	const links = document.querySelectorAll('#aside_feed .category:not([data-unread="0"]) a.title');
	if (links && links.length > 0) {
		delayedClick(links[links.length - 1]);
	}
}

function collapse_entry() {
	const flux_current = document.querySelector('.flux.current');
	toggleContent(flux_current, flux_current, false);
}

function user_filter(key) {
	const filter = document.getElementById('dropdown-query'),
		filters = filter.parentElement.querySelectorAll('.dropdown-menu > .query > a');
	if (typeof key === 'undefined') {
		if (!filters.length) {
			return;
		}
		// Display the filter div
		location.hash = filter.id;
		// Force scrolling to the filter div
		const scroll = needsScroll(document.querySelector('.header'));
		if (scroll !== 0) {
			document.scrollingElement.scrollTop = scroll;
		}
		// Force the key value if there is only one action, so we can trigger it automatically
		if (filters.length === 1) {
			key = 1;
		} else {
			return;
		}
	}
	// Trigger selected share action
	key = parseInt(key);
	if (key <= filters.length) {
		filters[key - 1].click();
	}
}

function auto_share(key) {
	const share = document.querySelector('.flux.current.active .dropdown-target[id^="dropdown-share"]');
	if (!share) {
		return;
	}
	const shares = share.parentElement.querySelectorAll('.dropdown-menu .item a');
	if (typeof key === 'undefined') {
		// Display the share div
		location.hash = share.id;
		// Force scrolling to the share div
		const scrollTop = needsScroll(share.closest('.bottom'));
		if (scrollTop !== 0) {
			document.scrollingElement.scrollTop = scrollTop;
		}
		// Force the key value if there is only one action, so we can trigger it automatically
		if (shares.length === 1) {
			key = 1;
		} else {
			return;
		}
	}
	// Trigger selected share action and hide the share div
	key = parseInt(key);
	if (key <= shares.length) {
		shares[key - 1].click();
		share.parentElement.querySelector('.dropdown-menu .dropdown-close a').click();
	}
}

var box_to_follow;

function onScroll() {
	if (!box_to_follow) {
		return;
	}
	if (context.auto_mark_scroll) {
		const minTop = 40 + box_to_follow.scrollTop;
		document.querySelectorAll('.not_read:not(.keep_unread)').forEach(function (div) {
				if (div.offsetHeight > 0 &&
					div.offsetParent.offsetTop + div.offsetTop + div.offsetHeight < minTop) {
					mark_read(div, true, true);
				}
			});
	}
	if (context.auto_load_more) {
		const pagination = document.getElementById('mark-read-pagination');
		if (pagination && box_to_follow.offsetHeight > 0 &&
			box_to_follow.scrollTop + box_to_follow.offsetHeight + (window.innerHeight / 2) >= pagination.offsetTop) {
			load_more_posts();
		}
	}
}

function init_posts() {
	if (context.auto_load_more || context.auto_mark_scroll || context.auto_remove_article) {
		box_to_follow = context.current_view === 'global' ? document.getElementById('panel') : document.scrollingElement;
		let lastScroll = 0,	//Throttle
			timerId = 0;
		(box_to_follow === document.scrollingElement ? window : box_to_follow).onscroll = function () {
			clearTimeout(timerId);
			if (lastScroll + 500 < Date.now()) {
				lastScroll = Date.now();
				onScroll();
			} else {
				timerId = setTimeout(onScroll, 500);
			}
		};
		onScroll();
	}
}

function init_column_categories() {
	if (context.current_view !== 'normal' && context.current_view !== 'reader') {
		return;
	}

	document.getElementById('aside_feed').onclick = function (ev) {
		let a = ev.target.closest('.tree-folder > .tree-folder-title > a.dropdown-toggle');
		if (a) {
			const img = a.querySelector('img');
			if (img.alt === '▽') {
				img.src = img.src.replace('/icons/down.', '/icons/up.');
				img.alt = '△';
			} else {
				img.src = img.src.replace('/icons/up.', '/icons/down.');
				img.alt = '▽';
			}

			const ul = a.closest('li').querySelector('.tree-folder-items');
			let nbVisibleItems = 0;
			for (let i = ul.children.length - 1; i >= 0; i--) {
				if (ul.children[i].offsetHeight) {
					nbVisibleItems++;
				}
			}
			ul.classList.toggle('active');
			//CSS transition does not work on max-height:auto
			ul.style.maxHeight = ul.classList.contains('active') ? (nbVisibleItems * 4) + 'em' : 0;
			return false;
		}

		a = ev.target.closest('.tree-folder-items > .feed .dropdown-toggle');
		if (a) {
			const itemId = a.closest('.item').id,
				templateId = itemId.substring(0, 2) === 't_' ? 'tag_config_template' : 'feed_config_template',
				id = itemId.substr(2),
				feed_web = a.getAttribute('data-fweb'),
				div = a.parentElement,
				dropdownMenu = div.querySelector('.dropdown-menu'),
				template = document.getElementById(templateId)
					.innerHTML.replace(/------/g, id).replace('http://example.net/', feed_web);
			if (!dropdownMenu) {
				a.href = '#dropdown-' + id;
				div.querySelector('.dropdown-target').id = 'dropdown-' + id;
				div.insertAdjacentHTML('beforeend', template);
				const b = div.querySelector('button.confirm');
				if (b) {
					b.disabled = false;
				}
			} else if (getComputedStyle(dropdownMenu).display === 'none') {
				const id2 = div.closest('.item').id.substr(2);
				a.href = '#dropdown-' + id2;
			} else {
				a.href = '#close';
			}
			return true;
		}

		return true;
	};
}

function init_shortcuts() {
	Object.keys(context.shortcuts).forEach(function (k) {
			context.shortcuts[k] = (context.shortcuts[k] || '').toUpperCase();
		});

	document.body.onkeydown = function (ev) {
			if (ev.target.closest('input, textarea') ||
				ev.ctrlKey || ev.metaKey || (ev.altKey && ev.shiftKey)) {
				return true;
			}

			const s = context.shortcuts;
			let k = (ev.key.trim() || ev.code || 'Space').toUpperCase();

			//IE11
			if (k === 'SPACEBAR') k = 'SPACE';
			else if (k === 'DEL') k = 'DELETE';
			else if (k === 'ESC') k = 'ESCAPE';

			if (location.hash.match(/^#dropdown-/)) {
				const n = parseInt(k);
				if (n) {
					if (location.hash === '#dropdown-query') {
						user_filter(n);
					} else {
						auto_share(n);
					}
					return false;
				}
			}
			if (k === s.next_entry) {
				if (ev.altKey) {
					next_category();
				} else if (ev.shiftKey) {
					next_feed();
				} else {
					next_entry(false);
				}
				return false;
			}
			if (k === s.prev_entry) {
				if (ev.altKey) {
					prev_category();
				} else if (ev.shiftKey) {
					prev_feed();
				} else {
					prev_entry(false);
				}
				return false;
			}
			if (k === s.mark_read) {
				if (ev.altKey) {
					mark_previous_read(document.querySelector('.flux.current'));
				} else if (ev.shiftKey) {
					document.querySelector('.nav_menu .read_all').click();
				} else {	// Toggle the read state
					mark_read(document.querySelector('.flux.current'), false, false);
				}
				return false;
			}
			if (k === s.first_entry) {
				if (ev.altKey) {
					first_category();
				} else if (ev.shiftKey) {
					first_feed();
				} else {
					const old_active = document.querySelector('.flux.current'),
						first = document.querySelector('.flux');
					if (first.classList.contains('flux')) {
						toggleContent(first, old_active, false);
					}
				}
				return false;
			}
			if (k === s.last_entry) {
				if (ev.altKey) {
					last_category();
				} else if (ev.shiftKey) {
					last_feed();
				} else {
					const old_active = document.querySelector('.flux.current'),
						last = document.querySelector('.flux:last-of-type');
					if (last.classList.contains('flux')) {
						toggleContent(last, old_active, false);
					}
				}
				return false;
			}

			if (ev.altKey || ev.shiftKey) {
				return true;
			}
			if (k === s.mark_favorite) {	// Toggle the favorite state
				mark_favorite(document.querySelector('.flux.current'));
				return false;
			}
			if (k === s.go_website) {
				if (context.auto_mark_site) {
					mark_read(document.querySelector('.flux.current'), true, false);
				}
				const newWindow = window.open();
				if (newWindow) {
					newWindow.opener = null;
					newWindow.location = document.querySelector('.flux.current a.go_website').href;
				}
				return false;
			}
			if (k === s.skip_next_entry) { next_entry(true); return false; }
			if (k === s.skip_prev_entry) { prev_entry(true); return false; }
			if (k === s.collapse_entry) { collapse_entry(); return false; }
			if (k === s.auto_share) { auto_share(); return false; }
			if (k === s.user_filter) { user_filter(); return false; }
			if (k === s.load_more) { load_more_posts(); return false; }
			if (k === s.close_dropdown) { location.hash = null; return false; }
			if (k === s.help) { window.open(context.urls.help); return false; }
			if (k === s.focus_search) { document.getElementById('search').focus(); return false; }
			if (k === s.normal_view) { delayedClick(document.querySelector('#nav_menu_views .view-normal')); return false; }
			if (k === s.reading_view) { delayedClick(document.querySelector('#nav_menu_views .view-reader')); return false; }
			if (k === s.global_view) { delayedClick(document.querySelector('#nav_menu_views .view-global')); return false; }
			if (k === s.rss_view) { delayedClick(document.querySelector('#nav_menu_views .view-rss')); return false; }
			return true;
		};
}

function init_stream(stream) {
	stream.onclick = function (ev) {
		let el = ev.target.closest('.flux a.read');
		if (el) {
			mark_read(el.closest('.flux'), false, false);
			return false;
		}

		el = ev.target.closest('.flux a.bookmark');
		if (el) {
			mark_favorite(el.closest('.flux'));
			return false;
		}

		el = ev.target.closest('.dynamictags');
		if (el) {
			loadDynamicTags(el);
			return true;
		}

		el = ev.target.closest('.item.title > a');
		if (el) {	// Allow default control-click behaviour such as open in backround-tab
			return ev.ctrlKey;
		}

		el = ev.target.closest('.flux .content a');
		if (el) {
			if (!el.closest('div').classList.contains('author')) {
				el.target = '_blank';
				el.rel = 'noreferrer';
			}
			return true;
		}

		el = ev.target.closest('.item.share > a[href="#"]');
		if (el) {	//Print
			const tmp_window = window.open();
			for (var i = 0; i < document.styleSheets.length; i++) {
				tmp_window.document.writeln('<link href="' + document.styleSheets[i].href + '" rel="stylesheet" type="text/css" />');
			}
			tmp_window.document.writeln(el.closest('.flux_content').querySelector('.content').innerHTML);
			tmp_window.document.close();
			tmp_window.focus();
			tmp_window.print();
			tmp_window.close();
			return false;
		}

		el = ev.target.closest('.item.share > a[href="POST"]');
		if (el) {	//Share by POST
			const f = el.parentElement.querySelector('form');
			f.disabled = false;
			f.submit();
			return false;
		}

		el = ev.target.closest('.flux_header, .flux_content');
		if (el) {	//flux_toggle
			if (ev.target.closest('.content, .item.website, .item.link, .dropdown-menu')) {
				return true;
			}
			if (!context.sides_close_article && ev.target.matches('div.flux_content')) {
				// setting for not-closing after clicking outside article area
				return false;
			}
			const old_active = document.querySelector('.flux.current'),
				new_active = el.parentNode;
			if (ev.target.tagName.toUpperCase() === 'A') {	//Leave real links alone
				if (context.auto_mark_article) {
					mark_read(new_active, true, false);
				}
				return true;
			}
			toggleContent(new_active, old_active, false);
			return false;
		}
	};

	stream.onmouseup = function (ev) {	// Mouseup enables us to catch middle click, and control+click in IE/Edge
		if (ev.altKey || ev.metaKey || ev.shiftKey) {
			return;
		}

		let el = ev.target.closest('.item.title > a');
		if (el) {
			if (ev.which == 1) {
				if (ev.ctrlKey) {	//Control+click
					if (context.auto_mark_site) {
						mark_read(el.closest('.flux'), true, false);
					}
				} else {
					el.parentElement.click();	//Normal click, just toggle article.
				}
			} else if (ev.which == 2 && !ev.ctrlKey) {	//Simple middle click: same behaviour as CTRL+click
				if (context.auto_mark_article) {
					const new_active = el.closest('.flux');
					mark_read(new_active, true, false);
				}
			}
			return;
		}

		if (context.auto_mark_site) {
			// catch mouseup instead of click so we can have the correct behaviour
			// with middle button click (scroll button).
			el = ev.target.closest('.flux .link > a');
			if (el) {
				if (ev.which == 3) {
					return;
				}
				mark_read(el.closest('.flux'), true, false);
			}
		}
	};

	stream.onchange = function (ev) {
			const checkboxTag = ev.target.closest('.checkboxTag');
			if (checkboxTag) {	//Dynamic tags
				ev.stopPropagation();
				const isChecked = checkboxTag.checked,
					tagId = checkboxTag.name.replace(/^t_/, ''),
					tagName = checkboxTag.nextElementSibling ? checkboxTag.nextElementSibling.value : '',
					entry = checkboxTag.closest('div.flux'),
					entryId = entry.id.replace(/^flux_/, '');
				checkboxTag.disabled = true;

				const req = new XMLHttpRequest();
				req.open('POST', './?c=tag&a=tagEntry', true);
				req.responseType = 'json';
				req.onerror = function (e) {
						checkboxTag.checked = !isChecked;
						badAjax(this.status == 403);
					};
				req.onload = function (e) {
						if (this.status != 200) {
							return req.onerror(e);
						}
						if (entry.classList.contains('not_read')) {
							incUnreadsTag('t_' + tagId, isChecked ? 1 : -1);
						}
					};
				req.onloadend = function (e) {
						checkboxTag.disabled = false;
						if (tagId == 0) {
							loadDynamicTags(checkboxTag.closest('div.dropdown'));
						}
					};
				req.setRequestHeader('Content-Type', 'application/json');
				req.send(JSON.stringify({
						_csrf: context.csrf,
						id_tag: tagId,
						name_tag: tagId == 0 ? tagName : '',
						id_entry: entryId,
						checked: isChecked,
					}));
			}
		};
}

function init_nav_entries() {
	const nav_entries = document.getElementById('nav_entries');
	if (nav_entries) {
		nav_entries.querySelector('.previous_entry').onclick = function (e) {
				prev_entry(false);
				return false;
			};
		nav_entries.querySelector('.next_entry').onclick = function (e) {
				next_entry(false);
				return false;
			};
		nav_entries.querySelector('.up').onclick = function (e) {
				const active_item = document.querySelector('.flux.current'),
					windowTop = document.scrollingElement.scrollTop,
					item_top = active_item.offsetParent.offsetTop + active_item.offsetTop;

				document.scrollingElement.scrollTop = windowTop > item_top ? item_top : 0;
				return false;
			};
	}
}

function loadDynamicTags(div) {
	div.classList.remove('dynamictags');
	div.querySelectorAll('li.item').forEach(function (li) { li.remove(); });
	const entryId = div.closest('div.flux').id.replace(/^flux_/, '');

	const req = new XMLHttpRequest();
	req.open('GET', './?c=tag&a=getTagsForEntry&id_entry=' + entryId, true);
	req.responseType = 'json';
	req.onerror = function (e) {
			div.querySelectorAll('li.item').forEach(function (li) { li.remove(); });
			div.classList.add('dynamictags');
		};
	req.onload = function (e) {
			if (this.status != 200) {
				return req.onerror(e);
			}
			const json = xmlHttpRequestJson(this);
			if (!json) {
				return req.onerror(e);
			}
			let html = '<li class="item"><label><input class="checkboxTag" name="t_0" type="checkbox" /> <input type="text" name="newTag" /></label></li>';
			if (json && json.length) {
				for (let i = 0; i < json.length; i++) {
					const tag = json[i];
					html += '<li class="item"><label><input class="checkboxTag" name="t_' + tag.id + '" type="checkbox"' +
						(tag.checked ? ' checked="checked"' : '') + '> ' + tag.name + '</label></li>';
				}
			}
			div.querySelector('.dropdown-menu').insertAdjacentHTML('beforeend', html);
		};
	req.send();
}

// <actualize>
var feed_processed = 0;

function updateFeed(feeds, feeds_count) {
	const feed = feeds.pop();
	if (!feed) {
		return;
	}
	const req = new XMLHttpRequest();
	req.open('POST', feed.url, true);
	req.onloadend = function (e) {
			if (this.status != 200) {
				return badAjax(false);
			}
			feed_processed++;
			const div = document.getElementById('actualizeProgress');
			div.querySelector('.progress').innerHTML = feed_processed + ' / ' + feeds_count;
			div.querySelector('.title').innerHTML = feed.title;
			if (feed_processed === feeds_count) {
				//Empty request to commit new articles
				const req2 = new XMLHttpRequest();
				req2.open('POST', './?c=feed&a=actualize&id=-1&ajax=1', true);
				req2.onloadend = function (e) {
					delayedFunction(function () { location.reload(); });
				};
				req2.setRequestHeader('Content-Type', 'application/json');
				req2.send(JSON.stringify({
						_csrf: context.csrf,
						noCommit: 0,
					}));
			} else {
				updateFeed(feeds, feeds_count);
			}
		};
	req.setRequestHeader('Content-Type', 'application/json');
	req.send(JSON.stringify({
			_csrf: context.csrf,
			noCommit: 1,
		}));
}

function init_actualize() {
	let auto = false;

	document.getElementById('actualize').onclick = function () {
		if (context.ajax_loading) {
			return false;
		}
		context.ajax_loading = true;

		const req = new XMLHttpRequest();
		req.open('POST', './?c=javascript&a=actualize', true);
		req.responseType = 'json';
		req.onload = function (e) {
				if (this.status != 200) {
					return badAjax(false);
				}
				const json = xmlHttpRequestJson(this);
				if (!json) {
					return badAjax(false);
				}
				if (auto && json.feeds.length < 1) {
					auto = false;
					context.ajax_loading = false;
					return false;
				}
				if (json.feeds.length === 0) {
					openNotification(json.feedback_no_refresh, 'good');
					//Empty request to commit new articles
					const req2 = new XMLHttpRequest();
					req2.open('POST', './?c=feed&a=actualize&id=-1&ajax=1', true);
					req2.onloadend = function (e) {
						context.ajax_loading = false;
					};
					req2.setRequestHeader('Content-Type', 'application/json');
					req2.send(JSON.stringify({
							_csrf: context.csrf,
							noCommit: 0,
						}));
					return;
				}
				//Progress bar
				const feeds_count = json.feeds.length;
				document.body.insertAdjacentHTML('beforeend', '<div id="actualizeProgress" class="notification good">' +
					json.feedback_actualize + '<br /><span class="title">/</span><br /><span class="progress">0 / ' +
					feeds_count + '</span></div>');
				for (let i = 10; i > 0; i--) {
					updateFeed(json.feeds, feeds_count);
				}
			};
		req.setRequestHeader('Content-Type', 'application/json');
		req.send(JSON.stringify({
				_csrf: context.csrf,
			}));

		return false;
	};

	if (context.auto_actualize_feeds) {
		auto = true;
		document.getElementById('actualize').click();
	}
}
// </actualize>

// <notification>
var notification = null,
	notification_interval = null,
	notification_working = false;

function openNotification(msg, status) {
	if (notification_working === true) {
		return false;
	}
	notification_working = true;
	notification.querySelector('.msg').innerHTML = msg;
	notification.className = 'notification';
	notification.classList.add(status);

	notification_interval = setTimeout(closeNotification, 4000);
}

function closeNotification() {
	notification.classList.add('closed');
	clearInterval(notification_interval);
	notification_working = false;
}

function init_notifications() {
	notification = document.getElementById('notification');

	notification.querySelector('a.close').onclick = function () {
			closeNotification();
			return false;
		};

	if (notification.querySelector('.msg').innerHTML.length > 0) {
		notification_working = true;
		notification_interval = setTimeout(closeNotification, 4000);
	}
}
// </notification>

// <popup>
let popup = null,
	popup_iframe_container = null,
	popup_iframe = null,
	popup_txt = null,
	popup_working = false;

function openPopupWithMessage(msg) {
	if (popup_working === true) {
		return false;
	}

	popup_working = true;

	popup_txt.innerHTML = msg;

	popup_txt.style.display = 'table-row';
	popup.style.display = 'block';
}

function openPopupWithSource(source) {
	if (popup_working === true) {
		return false;
	}

	popup_working = true;

	popup_iframe.src = source;

	popup_iframe_container.style.display = 'table-row';
	popup.style.display = 'block';
}

function closePopup() {
	popup.style.display = 'none';
	popup_iframe_container.style.display = 'none';
	popup_txt.style.display = 'none';

	popup_iframe.src = 'about:blank';

	popup_working = false;
}

function init_popup() {
	//Fetch elements.
	popup = document.getElementById('popup');

	popup_iframe_container = document.getElementById('popup-iframe-container');
	popup_iframe = document.getElementById('popup-iframe');

	popup_txt = document.getElementById('popup-txt');

	//Configure close button.
	document.getElementById('popup-close').addEventListener('click', function (ev) {
  		closePopup();
  	});

  	//Configure close-on-click.
	window.addEventListener('click', function (ev) {
		if (ev.target == popup) {
			closePopup();
		}
	});
}
// </popup>

// <notifs html5>
var notifs_html5_permission = 'denied';

function notifs_html5_is_supported() {
	return window.Notification !== undefined;
}

function notifs_html5_ask_permission() {
	window.Notification.requestPermission(function () {
		notifs_html5_permission = window.Notification.permission;
	});
}

function notifs_html5_show(nb) {
	if (notifs_html5_permission !== 'granted') {
		return;
	}

	const notification = new window.Notification(context.i18n.notif_title_articles, {
		icon: '../themes/icons/favicon-256.png',
		body: context.i18n.notif_body_articles.replace('%d', nb),
		tag: 'freshRssNewArticles',
	});

	notification.onclick = function () {
			delayedFunction(function() {
				location.reload();
				window.focus();
				notification.close();
			});
		};

	if (context.html5_notif_timeout !== 0) {
		setTimeout(function () {
			notification.close();
		}, context.html5_notif_timeout * 1000);
	}
}

function init_notifs_html5() {
	if (!notifs_html5_is_supported()) {
		return;
	}

	notifs_html5_permission = notifs_html5_ask_permission();
}
// </notifs html5>

function refreshUnreads() {
	const req = new XMLHttpRequest();
	req.open('GET', './?c=javascript&a=nbUnreadsPerFeed', true);
	req.responseType = 'json';
	req.onload = function (e) {
			const json = xmlHttpRequestJson(this);
			if (!json) {
				return badAjax(false);
			}
			const isAll = document.querySelector('.category.all.active');
			let new_articles = false;

			Object.keys(json.feeds).forEach(function (feed_id) {
				const nbUnreads = json.feeds[feed_id];
				feed_id = 'f_' + feed_id;
				const elem = document.getElementById(feed_id),
					feed_unreads = elem ? str2int(elem.getAttribute('data-unread')) : 0;

				if ((incUnreadsFeed(null, feed_id, nbUnreads - feed_unreads) || isAll) &&	//Update of current view?
					(nbUnreads - feed_unreads > 0)) {
					const newArticle = document.getElementById('new-article');
					newArticle.setAttribute('aria-hidden', 'false');
					newArticle.style.display = 'block';
					new_articles = true;
				}
			});

			let nbUnreadTags = 0;

			Object.keys(json.tags).forEach(function (tag_id) {
				const nbUnreads = json.tags[tag_id];
				nbUnreadTags += nbUnreads;
				const tag = document.getElementById('t_' + tag_id);
				if (tag) {
					tag.setAttribute('data-unread', nbUnreads);
					tag.querySelector('.item-title').setAttribute('data-unread', numberFormat(nbUnreads));
				}
			});

			const tags = document.querySelector('.category.tags');
			if (tags) {
				tags.setAttribute('data-unread', nbUnreadTags);
				tags.querySelector('.title').setAttribute('data-unread', numberFormat(nbUnreadTags));
			}

			const title = document.querySelector('.category.all .title'),
				nb_unreads = title ? str2int(title.getAttribute('data-unread')) : 0;

			if (nb_unreads > 0 && new_articles) {
				faviconNbUnread(nb_unreads);
				notifs_html5_show(nb_unreads);
			}
		};
	req.send();
}

//<endless_mode>
var url_load_more = '',
	load_more = false,
	box_load_more = null;

function load_more_posts() {
	if (load_more || !url_load_more || !box_load_more) {
		return;
	}
	load_more = true;
	document.getElementById('load_more').classList.add('loading');

	const req = new XMLHttpRequest();
	req.open('GET', url_load_more, true);
	req.responseType = 'document';
	req.onload = function (e) {
			const html = this.response,
				formPagination = document.getElementById('mark-read-pagination');

			const streamAdopted = document.adoptNode(html.getElementById('stream'));
			streamAdopted.querySelectorAll('.flux, .day').forEach(function (div) {
					box_load_more.insertBefore(div, formPagination);
				});

			const paginationOld = formPagination.querySelector('.pagination'),
				paginationNew = streamAdopted.querySelector('.pagination');
			formPagination.replaceChild(paginationNew, paginationOld);

			const bigMarkAsRead = document.getElementById('bigMarkAsRead');
			if (bigMarkAsRead) {
				if (context.display_order === 'ASC') {
					document.querySelector('#nav_menu_read_all .read_all').formAction = bigMarkAsRead.formAction;
				} else {
					bigMarkAsRead.formAction = document.querySelector('#nav_menu_read_all .read_all').formAction;
				}
			}

			document.querySelectorAll('[id^=day_]').forEach(function (div) {
				const ids = document.querySelectorAll('[id="' + div.id + '"]');
				for (let i = ids.length - 1; i > 0; i--) {	//Keep only the first
					ids[i].remove();
				}
			});

			init_load_more(box_load_more);

			const div_load_more = document.getElementById('load_more');
			if (bigMarkAsRead) {
				bigMarkAsRead.removeAttribute('disabled');
			}
			if (div_load_more) {
				div_load_more.classList.remove('loading');
			}

			load_more = false;
		};
	req.send();
}

var freshrssLoadMoreEvent = document.createEvent('Event');
freshrssLoadMoreEvent.initEvent('freshrss:load-more', true, true);

function init_load_more(box) {
	box_load_more = box;
	document.body.dispatchEvent(freshrssLoadMoreEvent);

	const next_link = document.getElementById('load_more');
	if (!next_link) {
		// no more article to load
		url_load_more = '';
		return;
	}

	url_load_more = next_link.href;

	next_link.onclick = function (e) {
			load_more_posts();
			return false;
		};
}
//</endless_mode>

function init_confirm_action() {
	document.body.onclick = function (ev) {
			const b = ev.target.closest('.confirm');
			if (b) {
				let str_confirmation = this.getAttribute('data-str-confirm');
				if (!str_confirmation) {
					str_confirmation = context.i18n.confirmation_default;
				}
				return confirm(str_confirmation);
			}
		};
	document.querySelectorAll('button.confirm').forEach(function (b) { b.disabled = false; });
}

function faviconNbUnread(n) {
	if (typeof n === 'undefined') {
		const t = document.querySelector('.category.all .title');
		n = t ? str2int(t.getAttribute('data-unread')) : 0;
	}
	//http://remysharp.com/2010/08/24/dynamic-favicons/
	const canvas = document.createElement('canvas'),
		link = document.getElementById('favicon').cloneNode(true),
		ratio = window.devicePixelRatio;
	if (canvas.getContext && link) {
		canvas.height = canvas.width = 16 * ratio;
		const img = document.createElement('img');
		img.onload = function () {
			const ctx = canvas.getContext('2d');
			ctx.drawImage(this, 0, 0, canvas.width, canvas.height);
			if (n > 0) {
				let text = '';
				if (n < 1000) {
					text = n;
				} else if (n < 100000) {
					text = Math.floor(n / 1000) + 'k';
				} else {
					text = 'E' + Math.floor(Math.log10(n));
				}
				ctx.font = 'bold ' + 9 * ratio + 'px "Arial", sans-serif';
				ctx.fillStyle = 'rgba(255, 255, 255, 0.8)';
				ctx.fillRect(0, 7 * ratio, ctx.measureText(text).width, 9 * ratio);
				ctx.fillStyle = '#F00';
				ctx.fillText(text, 0, canvas.height - 1);
			}
			link.href = canvas.toDataURL('image/png');
			document.querySelector('link[rel~=icon]').remove();
			document.head.appendChild(link);
		};
		img.src = '../favicon.ico';
	}
}

function removeFirstLoadSpinner() {
	const first_load = document.getElementById('first_load');
	if (first_load) {
		first_load.remove();
	}
}

function init_normal() {
	const stream = document.getElementById('stream');
	if (!stream) {
		if (window.console) {
			console.log('FreshRSS waiting for content…');
		}
		setTimeout(init_normal, 100);
		return;
	}
	init_column_categories();
	init_stream(stream);
	init_shortcuts();
	init_actualize();
	faviconNbUnread();

	window.onbeforeunload = function (e) {
		if (mark_read_queue && mark_read_queue.length > 0) {
			return false;
		}
	};
}

function init_beforeDOM() {
	document.scrollingElement.scrollTop = 0;
	if (['normal', 'reader', 'global'].indexOf(context.current_view) >= 0) {
		init_normal();
	}
}

function init_afterDOM() {
	removeFirstLoadSpinner();
	init_notifications();
	init_popup();
	init_confirm_action();
	const stream = document.getElementById('stream');
	if (stream) {
		init_load_more(stream);
		init_posts();
		init_nav_entries();
		init_notifs_html5();
		setTimeout(faviconNbUnread, 1000);
		setInterval(refreshUnreads, 120000);
	}

	if (window.console) {
		console.log('FreshRSS main init done.');
	}
}

init_beforeDOM();	//Can be called before DOM is fully loaded

if (document.readyState && document.readyState !== 'loading') {
	init_afterDOM();
} else {
	if (window.console) {
		console.log('FreshRSS waiting for DOMContentLoaded…');
	}
	document.addEventListener('DOMContentLoaded', init_afterDOM, false);
}
// @license-end