/**
 * This file is part of the Tracy (https://tracy.nette.org)
 */

'use strict';

(function(){
	let nonce, contentId, ajaxCounter = 1;
	let baseUrl = location.href.split('#')[0];
	baseUrl += (baseUrl.indexOf('?') < 0 ? '?' : '&');

	class Panel
	{
		constructor(id) {
			this.id = id;
			this.elem = document.getElementById(this.id);
			this.elem.Tracy = this.elem.Tracy || {};
		}


		init() {
			let elem = this.elem;

			this.init = function() {};
			elem.innerHTML = addNonces(elem.dataset.tracyContent);
			Tracy.Dumper.init(Debug.layer);
			delete elem.dataset.tracyContent;
			evalScripts(elem);

			draggable(elem, {
				handles: elem.querySelectorAll('h1'),
				start: () => {
					if (!this.is(Panel.FLOAT)) {
						this.toFloat();
					}
					this.focus();
					this.peekPosition = false;
				}
			});

			elem.addEventListener('mousedown', () => {
				this.focus();
			});

			elem.addEventListener('mouseenter', () => {
				clearTimeout(elem.Tracy.displayTimeout);
			});

			elem.addEventListener('mouseleave', () => {
				this.blur();
			});

			elem.addEventListener('mousemove', (e) => {
				if (e.buttons && !this.is(Panel.RESIZED) && (elem.style.width || elem.style.height)) {
					elem.classList.add(Panel.RESIZED);
				}
			});

			elem.addEventListener('tracy-toggle', () => {
				this.reposition();
			});

			elem.querySelectorAll('.tracy-icons a').forEach((link) => {
				link.addEventListener('click', (e) => {
					if (link.dataset.tracyAction === 'close') {
						this.toPeek();
					} else if (link.dataset.tracyAction === 'window') {
						this.toWindow();
					}
					e.preventDefault();
				});
			});

			if (this.is('tracy-panel-persist')) {
				Tracy.Toggle.persist(elem);
			}
		}


		is(mode) {
			return this.elem.classList.contains(mode);
		}


		focus() {
			let elem = this.elem;
			if (this.is(Panel.WINDOW)) {
				elem.Tracy.window.focus();

			} else if (!this.is(Panel.FOCUSED)) {
				for (let id in Debug.panels) {
					Debug.panels[id].elem.classList.remove(Panel.FOCUSED);
				}
				elem.classList.add(Panel.FOCUSED);
				elem.style.zIndex = Tracy.panelZIndex + Panel.zIndexCounter++;
			}
		}


		blur() {
			let elem = this.elem;
			if (this.is(Panel.PEEK)) {
				clearTimeout(elem.Tracy.displayTimeout);
				elem.Tracy.displayTimeout = setTimeout(() => {
					elem.classList.remove(Panel.FOCUSED);
				}, 50);
			}
		}


		toFloat() {
			this.elem.classList.remove(Panel.WINDOW);
			this.elem.classList.remove(Panel.PEEK);
			this.elem.classList.add(Panel.FLOAT);
			this.elem.classList.remove(Panel.RESIZED);
			this.reposition();
		}


		toPeek() {
			this.elem.classList.remove(Panel.WINDOW);
			this.elem.classList.remove(Panel.FLOAT);
			this.elem.classList.remove(Panel.FOCUSED);
			this.elem.classList.add(Panel.PEEK);
			this.elem.style.width = '';
			this.elem.style.height = '';
			this.elem.classList.remove(Panel.RESIZED);
		}


		toWindow() {
			let offset = getOffset(this.elem);
			offset.left += typeof window.screenLeft === 'number' ? window.screenLeft : (window.screenX + 10);
			offset.top += typeof window.screenTop === 'number' ? window.screenTop : (window.screenY + 50);

			let win = window.open('', this.id.replace(/-/g, '_'), 'left=' + offset.left + ',top=' + offset.top
			+ ',width=' + this.elem.offsetWidth + ',height=' + this.elem.offsetHeight + ',resizable=yes,scrollbars=yes');
			if (!win) {
				return false;
			}

			let doc = win.document;
			doc.write('<!DOCTYPE html><meta charset="utf-8">'
			+ '<script src="' + (baseUrl.replace('&', '&amp;').replace('"', '&quot;')) + '_tracy_bar=js&amp;XDEBUG_SESSION_STOP=1" onload="Tracy.Dumper.init()" async></script>'
			+ '<body id="tracy-debug">'
			);
			doc.body.innerHTML = '<div class="tracy-panel tracy-mode-window" id="' + this.elem.id + '">' + this.elem.innerHTML + '</div>';
			evalScripts(doc.body);
			if (this.elem.querySelector('h1')) {
				doc.title = this.elem.querySelector('h1').textContent;
			}

			win.addEventListener('beforeunload', () => {
				this.toPeek();
				win.close(); // forces closing, can be invoked by F5
			});

			doc.addEventListener('keyup', (e) => {
				if (e.keyCode === 27 && !e.shiftKey && !e.altKey && !e.ctrlKey && !e.metaKey) {
					win.close();
				}
			});

			this.elem.classList.remove(Panel.FLOAT);
			this.elem.classList.remove(Panel.PEEK);
			this.elem.classList.remove(Panel.FOCUSED);
			this.elem.classList.remove(Panel.RESIZED);
			this.elem.classList.add(Panel.WINDOW);
			this.elem.Tracy.window = win;
			return true;
		}


		reposition(deltaX, deltaY) {
			let pos = getPosition(this.elem);
			if (pos.width) { // is visible?
				setPosition(this.elem, {left: pos.left + (deltaX || 0), top: pos.top + (deltaY || 0)});
				if (this.is(Panel.RESIZED)) {
					let size = getWindowSize();
					this.elem.style.width = Math.min(size.width, pos.width) + 'px';
					this.elem.style.height = Math.min(size.height, pos.height) + 'px';
				}
			}
		}


		savePosition() {
			let key = this.id.split(':')[0]; // remove :contentId part
			let pos = getPosition(this.elem);
			if (this.is(Panel.WINDOW)) {
				localStorage.setItem(key, JSON.stringify({window: true}));
			} else if (pos.width) { // is visible?
				localStorage.setItem(key, JSON.stringify({right: pos.right, bottom: pos.bottom, width: pos.width, height: pos.height, zIndex: this.elem.style.zIndex - Tracy.panelZIndex, resized: this.is(Panel.RESIZED)}));
			} else {
				localStorage.removeItem(key);
			}
		}


		restorePosition() {
			let key = this.id.split(':')[0];
			let pos = JSON.parse(localStorage.getItem(key));
			if (!pos) {
				this.elem.classList.add(Panel.PEEK);
			} else if (pos.window) {
				this.init();
				this.toWindow() || this.toFloat();
			} else if (this.elem.dataset.tracyContent) {
				this.init();
				this.toFloat();
				if (pos.resized) {
					this.elem.classList.add(Panel.RESIZED);
					this.elem.style.width = pos.width + 'px';
					this.elem.style.height = pos.height + 'px';
				}
				setPosition(this.elem, pos);
				this.elem.style.zIndex = Tracy.panelZIndex + (pos.zIndex || 1);
				Panel.zIndexCounter = Math.max(Panel.zIndexCounter, (pos.zIndex || 1)) + 1;
			}
		}
	}

	Panel.PEEK = 'tracy-mode-peek';
	Panel.FLOAT = 'tracy-mode-float';
	Panel.WINDOW = 'tracy-mode-window';
	Panel.FOCUSED = 'tracy-focused';
	Panel.RESIZED = 'tracy-panel-resized';
	Panel.zIndexCounter = 1;


	class Bar
	{
		init() {
			this.id = 'tracy-debug-bar';
			this.elem = document.getElementById(this.id);

			draggable(this.elem, {
				handles: this.elem.querySelectorAll('li:first-child'),
				draggedClass: 'tracy-dragged',
				stop: () => {
					this.savePosition();
				}
			});

			this.elem.addEventListener('mousedown', (e) => {
				e.preventDefault();
			});

			this.initTabs(this.elem);
			this.restorePosition();

			(new MutationObserver(() => {
				this.restorePosition();
			})).observe(this.elem, {childList: true, characterData: true, subtree: true});
		}


		initTabs(elem) {
			elem.querySelectorAll('a').forEach((link) => {
				link.addEventListener('click', (e) => {
					if (link.dataset.tracyAction === 'close') {
						this.close();

					} else if (link.rel) {
						let panel = Debug.panels[link.rel];
						panel.init();

						if (e.shiftKey) {
							panel.toFloat();
							panel.toWindow();

						} else if (panel.is(Panel.FLOAT)) {
							panel.toPeek();

						} else {
							panel.toFloat();
							if (panel.peekPosition) {
								panel.reposition(-Math.round(Math.random() * 100) - 20, (Math.round(Math.random() * 100) + 20) * (this.isAtTop() ? 1 : -1));
								panel.peekPosition = false;
							}
						}
					}
					e.preventDefault();
				});

				link.addEventListener('mouseenter', (e) => {
					if (e.buttons || !link.rel || elem.classList.contains('tracy-dragged')) {
						return;
					}

					clearTimeout(this.displayTimeout);
					this.displayTimeout = setTimeout(() => {
						let panel = Debug.panels[link.rel];
						panel.focus();

						if (panel.is(Panel.PEEK)) {
							panel.init();

							let pos = getPosition(panel.elem);
							setPosition(panel.elem, {
								left: getOffset(link).left + getPosition(link).width + 4 - pos.width,
								top: this.isAtTop()
									? getOffset(this.elem).top + getPosition(this.elem).height + 4
									: getOffset(this.elem).top - pos.height - 4
							});
							panel.peekPosition = true;
						}
					}, 50);
				});

				link.addEventListener('mouseleave', () => {
					clearTimeout(this.displayTimeout);

					if (link.rel && !elem.classList.contains('tracy-dragged')) {
						Debug.panels[link.rel].blur();
					}
				});
			});
			this.autoHideLabels();
		}


		autoHideLabels() {
			let width = getWindowSize().width;
			this.elem.querySelectorAll('.tracy-row').forEach((row) => {
				let i, labels = row.querySelectorAll('.tracy-label');
				for (i = 0; i < labels.length && row.clientWidth < width; i++) {
					labels.item(i).hidden = false;
				}
				for (i = labels.length - 1; i >= 0 && row.clientWidth >= width; i--) {
					labels.item(i).hidden = true;
				}
			});
		}


		close() {
			document.getElementById('tracy-debug').style.display = 'none';
		}


		reposition(deltaX, deltaY) {
			let pos = getPosition(this.elem);
			if (pos.width) { // is visible?
				setPosition(this.elem, {left: pos.left + (deltaX || 0), top: pos.top + (deltaY || 0)});
				this.savePosition();
			}
		}


		savePosition() {
			let pos = getPosition(this.elem);
			if (pos.width) { // is visible?
				localStorage.setItem(this.id, JSON.stringify(this.isAtTop() ? {right: pos.right, top: pos.top} : {right: pos.right, bottom: pos.bottom}));
			}
		}


		restorePosition() {
			let pos = JSON.parse(localStorage.getItem(this.id));
			setPosition(this.elem, pos || {right: 0, bottom: 0});
			this.savePosition();
		}


		isAtTop() {
			let pos = getPosition(this.elem);
			return pos.top < 100 && pos.bottom > pos.top;
		}
	}


	class Debug
	{
		static init(content) {
			Debug.layer = document.createElement('div');
			Debug.layer.setAttribute('id', 'tracy-debug');
			Debug.layer.innerHTML = addNonces(content);
			(document.body || document.documentElement).appendChild(Debug.layer);
			evalScripts(Debug.layer);
			Tracy.Dumper.init(); // for common dump()
			Debug.layer.style.display = 'block';
			Debug.bar.init();

			Debug.layer.querySelectorAll('.tracy-panel').forEach((panel) => {
				Debug.panels[panel.id] = new Panel(panel.id);
				Debug.panels[panel.id].restorePosition();
			});

			Debug.captureWindow();
			Debug.captureAjax();

			Tracy.TableSort.init();
		}


		static loadAjax(content) {
			let rows = Debug.bar.elem.querySelectorAll('.tracy-row[data-tracy-group=ajax]');
			rows = Array.from(rows).reverse();
			let max = window.TracyMaxAjaxRows || 3;
			rows.forEach((row) => {
				if (--max > 0) {
					return;
				}
				row.querySelectorAll('a[rel]').forEach((tab) => {
					let panel = Debug.panels[tab.rel];
					if (panel.is(Panel.PEEK)) {
						delete Debug.panels[tab.rel];
						panel.elem.parentNode.removeChild(panel.elem);
					}
				});
				row.parentNode.removeChild(row);
			});

			if (rows[0]) { // update content in first-row panels
				rows[0].querySelectorAll('a[rel]').forEach((tab) => {
					Debug.panels[tab.rel].savePosition();
					Debug.panels[tab.rel].toPeek();
				});
			}

			Debug.layer.insertAdjacentHTML('beforeend', content.panels);
			evalScripts(Debug.layer);
			Debug.bar.elem.insertAdjacentHTML('beforeend', content.bar);
			let ajaxBar = Debug.bar.elem.querySelector('.tracy-row:last-child');

			Debug.layer.querySelectorAll('.tracy-panel').forEach((panel) => {
				if (!Debug.panels[panel.id]) {
					Debug.panels[panel.id] = new Panel(panel.id);
					Debug.panels[panel.id].restorePosition();
				}
			});

			Debug.bar.initTabs(ajaxBar);
		}


		static captureWindow() {
			let size = getWindowSize();

			window.addEventListener('resize', () => {
				let newSize = getWindowSize();

				Debug.bar.reposition(newSize.width - size.width, newSize.height - size.height);
				Debug.bar.autoHideLabels();

				for (let id in Debug.panels) {
					Debug.panels[id].reposition(newSize.width - size.width, newSize.height - size.height);
				}

				size = newSize;
			});

			window.addEventListener('unload', () => {
				for (let id in Debug.panels) {
					Debug.panels[id].savePosition();
				}
			});
		}


		static captureAjax() {
			let header = Tracy.getAjaxHeader();
			if (!header) {
				return;
			}
			let oldOpen = XMLHttpRequest.prototype.open;

			XMLHttpRequest.prototype.open = function() {
				oldOpen.apply(this, arguments);
				if (window.TracyAutoRefresh !== false && new URL(arguments[1], location.origin).host === location.host) {
					let reqId = header + '_' + ajaxCounter++;
					this.setRequestHeader('X-Tracy-Ajax', reqId);
					this.addEventListener('load', function() {
						if (this.getAllResponseHeaders().match(/^X-Tracy-Ajax: 1/mi)) {
							Debug.loadScript(baseUrl + '_tracy_bar=content-ajax.' + reqId + '&XDEBUG_SESSION_STOP=1&v=' + Math.random());
						}
					});
				}
			};

			let oldFetch = window.fetch;
			window.fetch = function(request, options) {
				request = request instanceof Request ? request : new Request(request, options || {});

				if (window.TracyAutoRefresh !== false && new URL(request.url, location.origin).host === location.host) {
					let reqId = header + '_' + ajaxCounter++;
					request.headers.set('X-Tracy-Ajax', reqId);
					return oldFetch(request).then((response) => {
						if (response.headers.has('X-Tracy-Ajax') && response.headers.get('X-Tracy-Ajax')[0] === '1') {
							Debug.loadScript(baseUrl + '_tracy_bar=content-ajax.' + reqId + '&XDEBUG_SESSION_STOP=1&v=' + Math.random());
						}

						return response;
					});
				}

				return oldFetch(request);
			};
		}


		static loadScript(url) {
			if (Debug.scriptElem) {
				Debug.scriptElem.parentNode.removeChild(Debug.scriptElem);
			}
			Debug.scriptElem = document.createElement('script');
			Debug.scriptElem.src = url;
			Debug.scriptElem.setAttribute('nonce', nonce);
			(document.body || document.documentElement).appendChild(Debug.scriptElem);
		}
	}


	function evalScripts(elem) {
		elem.querySelectorAll('script').forEach((script) => {
			if ((!script.hasAttribute('type') || script.type === 'text/javascript' || script.type === 'application/javascript') && !script.tracyEvaluated) {
				let document = script.ownerDocument;
				let dolly = document.createElement('script');
				dolly.textContent = script.textContent;
				dolly.setAttribute('nonce', nonce);
				(document.body || document.documentElement).appendChild(dolly);
				script.tracyEvaluated = true;
			}
		});
	}


	let dragging;

	function draggable(elem, options) {
		let dE = document.documentElement, started, deltaX, deltaY, clientX, clientY;
		options = options || {};

		let redraw = function () {
			if (dragging) {
				setPosition(elem, {left: clientX + deltaX, top: clientY + deltaY});
				requestAnimationFrame(redraw);
			}
		};

		let onMove = function(e) {
			if (e.buttons === 0) {
				return onEnd(e);
			}
			if (!started) {
				if (options.draggedClass) {
					elem.classList.add(options.draggedClass);
				}
				if (options.start) {
					options.start(e, elem);
				}
				started = true;
			}

			clientX = e.touches ? e.touches[0].clientX : e.clientX;
			clientY = e.touches ? e.touches[0].clientY : e.clientY;
			return false;
		};

		let onEnd = function(e) {
			if (started) {
				if (options.draggedClass) {
					elem.classList.remove(options.draggedClass);
				}
				if (options.stop) {
					options.stop(e, elem);
				}
			}
			dragging = null;
			dE.removeEventListener('mousemove', onMove);
			dE.removeEventListener('mouseup', onEnd);
			dE.removeEventListener('touchmove', onMove);
			dE.removeEventListener('touchend', onEnd);
			return false;
		};

		let onStart = function(e) {
			e.preventDefault();
			e.stopPropagation();

			if (dragging) { // missed mouseup out of window?
				return onEnd(e);
			}

			let pos = getPosition(elem);
			clientX = e.touches ? e.touches[0].clientX : e.clientX;
			clientY = e.touches ? e.touches[0].clientY : e.clientY;
			deltaX = pos.left - clientX;
			deltaY = pos.top - clientY;
			dragging = true;
			started = false;
			dE.addEventListener('mousemove', onMove);
			dE.addEventListener('mouseup', onEnd);
			dE.addEventListener('touchmove', onMove);
			dE.addEventListener('touchend', onEnd);
			requestAnimationFrame(redraw);
			if (options.start) {
				options.start(e, elem);
			}
		};

		options.handles.forEach((handle) => {
			handle.addEventListener('mousedown', onStart);
			handle.addEventListener('touchstart', onStart);

			handle.addEventListener('click', (e) => {
				if (started) {
					e.stopImmediatePropagation();
				}
			});
		});
	}


	// returns total offset for element
	function getOffset(elem) {
		let res = {left: elem.offsetLeft, top: elem.offsetTop};
		while (elem = elem.offsetParent) { // eslint-disable-line no-cond-assign
			res.left += elem.offsetLeft; res.top += elem.offsetTop;
		}
		return res;
	}


	function getWindowSize() {
		return {
			width: document.documentElement.clientWidth,
			height: document.compatMode === 'BackCompat' ? window.innerHeight : document.documentElement.clientHeight
		};
	}


	// move to new position
	function setPosition(elem, coords) {
		let win = getWindowSize();
		if (typeof coords.right !== 'undefined') {
			coords.left = win.width - elem.offsetWidth - coords.right;
		}
		if (typeof coords.bottom !== 'undefined') {
			coords.top = win.height - elem.offsetHeight - coords.bottom;
		}
		elem.style.left = Math.max(0, Math.min(coords.left, win.width - elem.offsetWidth)) + 'px';
		elem.style.top = Math.max(0, Math.min(coords.top, win.height - elem.offsetHeight)) + 'px';
	}


	// returns current position
	function getPosition(elem) {
		let win = getWindowSize();
		return {
			left: elem.offsetLeft,
			top: elem.offsetTop,
			right: win.width - elem.offsetWidth - elem.offsetLeft,
			bottom: win.height - elem.offsetHeight - elem.offsetTop,
			width: elem.offsetWidth,
			height: elem.offsetHeight
		};
	}


	function addNonces(html) {
		let el = document.createElement('div');
		el.innerHTML = html;
		el.querySelectorAll('style').forEach((style) => {
			style.setAttribute('nonce', nonce);
		});
		return el.innerHTML;
	}


	if (document.currentScript) {
		nonce = document.currentScript.getAttribute('nonce') || document.currentScript.nonce;
		contentId = document.currentScript.dataset.id;
	}

	let Tracy = window.Tracy = window.Tracy || {};
	Tracy.panelZIndex = Tracy.panelZIndex || 20000;
	Tracy.DebugPanel = Panel;
	Tracy.DebugBar = Bar;
	Tracy.Debug = Debug;
	Tracy.getAjaxHeader = () => contentId;

	Debug.bar = new Bar;
	Debug.panels = {};
})();
