let highestZIndex = 100;

function init() {
	const desktop = document.querySelector(".desktop");

	const shortcutData = [
		{
			label: "My Files",
			icon: "icons/folder.png",
			width: 500,
			height: 400,
			action: () =>
			openNewWindow(
				"My Files",
				`<iframe src="https://98.js.org"></iframe>`,
				true,
				500,
				400
			)
		},
		{
			label: "Notes",
			icon: "icons/notepad.png",
			width: 400,
			height: 300,
			action: () =>
			openNewWindow(
				"Notes",
				`<textarea>hello...</textarea>`,
				true,
				400,
				300
			)
		},
		{
			label: "Recycle Bin",
			icon: "icons/trash.png",
			width: 300,
			height: 200,
			action: () =>
			openNewWindow(
				"Recycle Bin",
				`<p>Your trash goes here.</p>`,
				false,
				300,
				200
			)
		},
		{
			label: "CSS Art",
			icon: "icons/folder.png",
			width: 600,
			height: 500,
			action: () =>
			openNewWindow(
				"CSS Art",
				`<iframe src="https://tilde.town/~dozens/cssart/quarters.html"></iframe>`,
				true,
				600,
				600
			)
		}
	];

	shortcutData.forEach(({ label, icon, action }) => {
		const shortcut = document.createElement("div");
		shortcut.className = "shortcut";

		shortcut.innerHTML = `
			<img src="${icon}" alt="${label}" />
			<span>${label}</span>
		`;

		shortcut.addEventListener("dblclick", action);
		document.querySelector(".desktop").appendChild(shortcut);
	});
}

init();

function openNewWindow(title, contentHTML, fullSizeContent = false, width = 300, height = 200) {
	const newWin = document.createElement("div");
	newWin.className = "window";

	const viewportWidth = window.innerWidth;
	const viewportHeight = window.innerHeight;
	const randomLeft = Math.floor(Math.random() * (viewportWidth - 320));
	const randomTop = Math.floor(Math.random() * (viewportHeight - 200));
	newWin.style.left = `${randomLeft}px`;
	newWin.style.top = `${randomTop}px`;

	newWin.innerHTML = `
	  <div class="titlebar">
		<div class="title">${title}</div>
		<button class="close-btn" aria-label="Close window">&times;</button>
	  </div>
	  <div class="content">${contentHTML}</div>
	`;

	const resizers = ['nw', 'n', 'ne', 'e', 'se', 's', 'sw', 'w'];
	resizers.forEach(pos => {
		const resizer = document.createElement("div");
		resizer.className = `resizer ${pos}`;
		newWin.appendChild(resizer);
	});

	document.body.appendChild(newWin);

	bringToFront(newWin);

	const content = newWin.querySelector(".content");
	content.style.width = `${width}px`;
	content.style.height = `${height}px`;

	if (fullSizeContent) {
		content.style.padding = "0";
	}

	// Bring window to front when clicked
	newWin.addEventListener("mousedown", () => {
		bringToFront(newWin);
	});

	// Dragging logic
	const titlebar = newWin.querySelector(".titlebar");
	let isDragging = false;
	let offsetX = 0;
	let offsetY = 0;

	titlebar.addEventListener("mousedown", (e) => {
		if (e.target.classList.contains("close-btn")) return;
		isDragging = true;
		const rect = newWin.getBoundingClientRect();
		offsetX = e.clientX - rect.left;
		offsetY = e.clientY - rect.top;
		document.body.style.userSelect = 'none';
	});

	document.addEventListener("mousemove", (e) => {
		if (!isDragging) return;
		newWin.style.left = `${e.clientX - offsetX}px`;
		newWin.style.top = `${e.clientY - offsetY}px`;
	});

	document.addEventListener("mouseup", () => {
		if (isDragging) {
			isDragging = false;
			document.body.style.userSelect = '';
		}
	});

	// Close button logic
	const closeBtn = newWin.querySelector(".close-btn");
	closeBtn.addEventListener("click", () => {
		newWin.remove();
	});

	let isResizing = false;
	let currentResizer = null;

	const minWidth = 200;
	const minHeight = 150;

	const startResize = (e, resizer) => {
		e.preventDefault();
		isResizing = true;
		currentResizer = resizer;

		const rect = newWin.getBoundingClientRect();
		newWin.dataset.startX = e.clientX;
		newWin.dataset.startY = e.clientY;
		newWin.dataset.startWidth = rect.width;
		newWin.dataset.startHeight = rect.height;
		newWin.dataset.startLeft = rect.left;
		newWin.dataset.startTop = rect.top;

		document.body.style.userSelect = "none";
	};

	const onMouseMove = (e) => {
		if (!isResizing || !currentResizer) return;

		const dx = e.clientX - newWin.dataset.startX;
		const dy = e.clientY - newWin.dataset.startY;

		let newWidth = parseFloat(newWin.dataset.startWidth);
		let newHeight = parseFloat(newWin.dataset.startHeight);
		let newLeft = parseFloat(newWin.dataset.startLeft);
		let newTop = parseFloat(newWin.dataset.startTop);

		switch (currentResizer) {
			case 'e':
				newWidth += dx;
				break;
			case 's':
				newHeight += dy;
				break;
			case 'se':
				newWidth += dx;
				newHeight += dy;
				break;
			case 'w':
				newWidth -= dx;
				newLeft += dx;
				break;
			case 'n':
				newHeight -= dy;
				newTop += dy;
				break;
			case 'nw':
				newWidth -= dx;
				newLeft += dx;
				newHeight -= dy;
				newTop += dy;
				break;
			case 'ne':
				newWidth += dx;
				newHeight -= dy;
				newTop += dy;
				break;
			case 'sw':
				newWidth -= dx;
				newLeft += dx;
				newHeight += dy;
				break;
		}

		if (newWidth >= minWidth) {
			newWin.style.width = `${newWidth}px`;
			newWin.style.left = `${newLeft}px`;
			content.style.width = `${newWidth}px`;
		}
		if (newHeight >= minHeight) {
			newWin.style.height = `${newHeight}px`;
			newWin.style.top = `${newTop}px`;
			content.style.height = `${newHeight - titlebar.offsetHeight}px`;
		}
	};

	const stopResize = () => {
		isResizing = false;
		currentResizer = null;
		document.body.style.userSelect = "";
	};

	resizers.forEach(pos => {
		const el = newWin.querySelector(`.resizer.${pos}`);
		el.addEventListener("mousedown", (e) => startResize(e, pos));
	});

	document.addEventListener("mousemove", onMouseMove);
	document.addEventListener("mouseup", stopResize);

	function bringToFront(win) {
		highestZIndex++;
		win.style.zIndex = highestZIndex;
	}
}