tuey.js
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tuey.js
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	import * as readline from 'node:readline';

	const ESC = '\x1b';
	const CSI = `${ESC}[`;

	export const codes = {
	hideCursor: `${CSI}?25l`,
	showCursor: `${CSI}?25h`,
	altScreenOn: `${CSI}?1049h`,
	altScreenOff: `${CSI}?1049l`,
	syncStart: `${CSI}?2026h`,
	syncEnd: `${CSI}?2026l`,
	home: `${CSI}H`,
	clear: `${CSI}2J`,
	clearLine: `${CSI}2K`,
	reset: `${CSI}0m`,
	bold: `${CSI}1m`,
	dim: `${CSI}2m`,
	italic: `${CSI}3m`,
	underline: `${CSI}4m`,
	blink: `${CSI}5m`,
	inverse: `${CSI}7m`,
	hidden: `${CSI}8m`,
	strikethrough: `${CSI}9m`,
	fg: n => `${CSI}38;5;${n}m`,
	bg: n => `${CSI}48;5;${n}m`,
	rgb: (r, g, b) => `${CSI}38;2;${r};${g};${b}m`,
	bgRgb: (r, g, b) => `${CSI}48;2;${r};${g};${b}m`,
	moveTo: (x, y) => `${CSI}${y + 1};${x + 1}H`,
	moveUp: n => `${CSI}${n}A`,
	moveDown: n => `${CSI}${n}B`,
	moveRight: n => `${CSI}${n}C`,
	moveLeft: n => `${CSI}${n}D`,
	saveCursor: `${ESC}7`,
	restoreCursor: `${ESC}8`,
	scrollUp: n => `${CSI}${n}S`,
	scrollDown: n => `${CSI}${n}T`
	};

	export const colors = {
	reset: codes.reset,
	bold: codes.bold,
	dim: codes.dim,
	italic: codes.italic,
	underline: codes.underline,
	inverse: codes.inverse,
	black: codes.fg(0),
	red: codes.fg(196),
	green: codes.fg(82),
	yellow: codes.fg(226),
	blue: codes.fg(39),
	magenta: codes.fg(201),
	cyan: codes.fg(51),
	white: codes.fg(15),
	gray: codes.fg(245),
	brightRed: codes.fg(9),
	brightGreen: codes.fg(10),
	brightYellow: codes.fg(11),
	brightBlue: codes.fg(12),
	brightMagenta: codes.fg(13),
	brightCyan: codes.fg(14),
	bgBlack: codes.bg(0),
	bgRed: codes.bg(196),
	bgGreen: codes.bg(82),
	bgYellow: codes.bg(226),
	bgBlue: codes.bg(24),
	bgMagenta: codes.bg(201),
	bgCyan: codes.bg(51),
	bgWhite: codes.bg(15),
	bgGray: codes.bg(238)
	};

	export const box = {
	light: { tl: '┌', tr: '┐', bl: '└', br: '┘', h: '─', v: '│', lT: '├', rT: '┤', tT: '┬', bT: '┴', cross: '┼' },
	heavy: { tl: '┏', tr: '┓', bl: '┗', br: '┛', h: '━', v: '┃', lT: '┣', rT: '┫', tT: '┳', bT: '┻', cross: '╋' },
	double: { tl: '╔', tr: '╗', bl: '╚', br: '╝', h: '═', v: '║', lT: '╠', rT: '╣', tT: '╦', bT: '╩', cross: '╬' },
	rounded: { tl: '╭', tr: '╮', bl: '╰', br: '╯', h: '─', v: '│', lT: '├', rT: '┤', tT: '┬', bT: '┴', cross: '┼' },
	ascii: { tl: '+', tr: '+', bl: '+', br: '+', h: '-', v: '\|', lT: '+', rT: '+', tT: '+', bT: '+', cross: '+' }
	};

	export const keys = {
	UP: '\x1b[A',
	DOWN: '\x1b[B',
	RIGHT: '\x1b[C',
	LEFT: '\x1b[D',
	HOME: '\x1b[H',
	END: '\x1b[F',
	PAGE_UP: '\x1b[5~',
	PAGE_DOWN: '\x1b[6~',
	INSERT: '\x1b[2~',
	DELETE: '\x1b[3~',
	ENTER: '\r',
	TAB: '\t',
	ESCAPE: '\x1b',
	BACKSPACE: '\x7f',
	CTRL_C: '\x03',
	CTRL_D: '\x04',
	CTRL_Z: '\x1a',
	F1: '\x1bOP',
	F2: '\x1bOQ',
	F3: '\x1bOR',
	F4: '\x1bOS',
	F5: '\x1b[15~',
	F6: '\x1b[17~',
	F7: '\x1b[18~',
	F8: '\x1b[19~',
	F9: '\x1b[20~',
	F10: '\x1b[21~',
	F11: '\x1b[23~',
	F12: '\x1b[24~'
	};

	export function stripAnsi(str) {
	return str.replace(/\x1b\[[0-9;]*m/g, '');
	}

	export function visibleLength(str) {
	return stripAnsi(str).length;
	}

	export function pad(str, len, char = ' ') {
	const visible = visibleLength(str);
	const diff = len - visible;
	if (diff <= 0) return str;
	if (char === undefined \|\| char === null) {
	console.error("pad() char undefined, str:", str, "len:", len);
	console.error(new Error().stack);
	process.exit(1);
	}
	return str + char.repeat(diff);
	}

	export function padStart(str, len, char = ' ') {
	const visible = visibleLength(str);
	return char.repeat(Math.max(0, len - visible)) + str;
	}

	export function padCenter(str, len, char = ' ') {
	const visible = visibleLength(str);
	const total = Math.max(0, len - visible);
	const left = Math.floor(total / 2);
	const right = total - left;
	return char.repeat(left) + str + char.repeat(right);
	}

	export function truncate(str, len, suffix = '…') {
	const stripped = stripAnsi(str);
	if (stripped.length <= len) return str;

	const suffixLen = visibleLength(suffix);
	const targetLen = len - suffixLen;
	if (targetLen <= 0) return suffix.slice(0, len);

	let visCount = 0;
	let result = '';
	let i = 0;

	while (i < str.length && visCount < targetLen) {
	if (str[i] === '\x1b') {
	const match = str.slice(i).match(/^\x1b\[[0-9;]*m/);
	if (match) {
	result += match[0];
	i += match[0].length;
	continue;
	}
	}
	result += str[i];
	visCount++;
	i++;
	}

	return result + codes.reset + suffix;
	}

	export function wrap(str, width) {
	const words = str.split(' ');
	const lines = [];
	let line = '';
	let lineLen = 0;

	for (const word of words) {
	const wordLen = visibleLength(word);
	const spaceNeeded = line ? 1 : 0;

	if (lineLen + wordLen + spaceNeeded > width) {
	if (line) lines.push(line);
	line = word;
	lineLen = wordLen;
	} else {
	line = line ? line + ' ' + word : word;
	lineLen += wordLen + spaceNeeded;
	}
	}
	if (line) lines.push(line);
	return lines;
	}

	export class Buffer {
	constructor(width, height) {
	this.width = width;
	this.height = height;
	this.lines = Array(height).fill('').map(() => ' '.repeat(width));
	this.styles = Array(height).fill('').map(() => '');
	}

	clear() {
	for (let y = 0; y < this.height; y++) {
	this.lines[y] = ' '.repeat(this.width);
	this.styles[y] = '';
	}
	}

	resize(width, height) {
	const newLines = [];
	const newStyles = [];
	for (let y = 0; y < height; y++) {
	if (y < this.height) {
	newLines.push(pad(this.lines[y], width).slice(0, width));
	newStyles.push(this.styles[y]);
	} else {
	newLines.push(' '.repeat(width));
	newStyles.push('');
	}
	}
	this.width = width;
	this.height = height;
	this.lines = newLines;
	this.styles = newStyles;
	}

	write(x, y, text, style = '') {
	if (y < 0 \|\| y >= this.height) return;
	const stripped = stripAnsi(text);
	const line = this.lines[y];
	const before = line.slice(0, Math.max(0, x));
	const after = line.slice(x + stripped.length);
	this.lines[y] = pad(before, x) + stripped + after;
	if (style) this.styles[y] = style;
	}

	writeStyled(x, y, text) {
	if (y < 0 \|\| y >= this.height) return;
	const stripped = stripAnsi(text);
	const line = this.lines[y];
	const lineStripped = stripAnsi(line);

	const before = lineStripped.slice(0, Math.max(0, x));
	const after = lineStripped.slice(x + stripped.length);
	this.lines[y] = pad(before, x) + text + codes.reset + after;
	}

	fill(x, y, width, height, char = ' ', style = '') {
	for (let row = y; row < y + height && row < this.height; row++) {
	if (row < 0) continue;
	const fillStr = char.repeat(width);
	this.write(x, row, fillStr, style);
	}
	}

	box(x, y, width, height, style = box.light, title = '', titleStyle = '') {
	if (height < 2 \|\| width < 2) return;
	if (!style \|\| !style.h) {
	console.error("box() style undefined:", style);
	console.error(new Error().stack);
	process.exit(1);
	}

	const top = style.tl + style.h.repeat(width - 2) + style.tr;
	const bottom = style.bl + style.h.repeat(width - 2) + style.br;

	this.writeStyled(x, y, top);
	this.writeStyled(x, y + height - 1, bottom);

	for (let row = y + 1; row < y + height - 1 && row < this.height; row++) {
	if (row < 0) continue;
	this.writeStyled(x, row, style.v);
	this.writeStyled(x + width - 1, row, style.v);
	}

	if (title) {
	const titleStr = ` ${title} `;
	const titleX = x + Math.floor((width - visibleLength(titleStr)) / 2);
	this.writeStyled(titleX, y, titleStyle + titleStr + codes.reset);
	}
	}

	render() {
	return this.lines.join('\n');
	}

	clone() {
	const buf = new Buffer(this.width, this.height);
	buf.lines = [...this.lines];
	buf.styles = [...this.styles];
	return buf;
	}
	}

	export class Screen {
	constructor(options = {}) {
	this.stdin = options.stdin \|\| process.stdin;
	this.stdout = options.stdout \|\| process.stdout;
	this.fullscreen = options.fullscreen !== false;
	this.hideCursor = options.hideCursor !== false;
	this.rawMode = options.rawMode !== false;

	this._width = this.stdout.columns \|\| 80;
	this._height = this.stdout.rows \|\| 24;
	this._buffer = new Buffer(this._width, this._height);
	this._prevBuffer = null;
	this._running = false;
	this._keyHandlers = [];
	this._resizeHandlers = [];
	this._modalStack = [];

	this._onKeypress = this._onKeypress.bind(this);
	this._onResize = this._onResize.bind(this);
	this._cleanup = this._cleanup.bind(this);
	}

	get width() { return this._width; }
	get height() { return this._height; }
	get buffer() { return this._buffer; }

	start() {
	if (this._running) return;
	this._running = true;

	if (this.rawMode && this.stdin.isTTY) {
	this.stdin.setRawMode(true);
	}
	this.stdin.resume();
	readline.emitKeypressEvents(this.stdin);
	this.stdin.on('keypress', this._onKeypress);
	this.stdout.on('resize', this._onResize);
	process.on('SIGINT', this._cleanup);
	process.on('SIGTERM', this._cleanup);

	let init = '';
	if (this.fullscreen) init += codes.altScreenOn;
	if (this.hideCursor) init += codes.hideCursor;
	init += codes.home + codes.clear;
	this.stdout.write(init);
	}

	stop() {
	this._cleanup();
	}

	_cleanup() {
	if (!this._running) return;
	this._running = false;

	this.stdin.removeListener('keypress', this._onKeypress);
	this.stdout.removeListener('resize', this._onResize);
	process.removeListener('SIGINT', this._cleanup);
	process.removeListener('SIGTERM', this._cleanup);

	let cleanup = '';
	if (this.hideCursor) cleanup += codes.showCursor;
	if (this.fullscreen) cleanup += codes.altScreenOff;
	this.stdout.write(cleanup);

	if (this.rawMode && this.stdin.isTTY) {
	this.stdin.setRawMode(false);
	}
	this.stdin.pause();
	}

	_onResize() {
	this._width = this.stdout.columns \|\| 80;
	this._height = this.stdout.rows \|\| 24;
	this._buffer.resize(this._width, this._height);
	this._prevBuffer = null;
	for (const handler of this._resizeHandlers) {
	handler(this._width, this._height);
	}
	}

	_onKeypress(str, key) {
	const sequence = key && key.sequence ? key.sequence : str;
	if (!sequence) return;
	this._emitKey(sequence);
	}

	_emitKey(key) {
	if (this._modalStack.length > 0) {
	const modal = this._modalStack[this._modalStack.length - 1];
	if (modal.onKey) {
	const result = modal.onKey(key, modal);
	if (result === false) return;
	}
	}

	for (const handler of this._keyHandlers) {
	handler(key);
	}
	}

	onKey(handler) {
	this._keyHandlers.push(handler);
	return () => {
	const idx = this._keyHandlers.indexOf(handler);
	if (idx >= 0) this._keyHandlers.splice(idx, 1);
	};
	}

	onResize(handler) {
	this._resizeHandlers.push(handler);
	return () => {
	const idx = this._resizeHandlers.indexOf(handler);
	if (idx >= 0) this._resizeHandlers.splice(idx, 1);
	};
	}

	clear() {
	this._buffer.clear();
	}

	write(x, y, text, style = '') {
	this._buffer.writeStyled(x, y, style + text);
	}

	fill(x, y, width, height, char = ' ', style = '') {
	for (let row = y; row < y + height && row < this._height; row++) {
	if (row < 0) continue;
	this.write(x, row, style + char.repeat(width));
	}
	}

	box(x, y, width, height, style = box.light, title = '', titleStyle = '') {
	this._buffer.box(x, y, width, height, style, title, titleStyle);
	}

	pushModal(options) {
	const savedBuffer = this._buffer.clone();
	const modal = {
	id: options.id \|\| Date.now().toString(),
	x: options.x,
	y: options.y,
	width: options.width,
	height: options.height,
	savedBuffer,
	onKey: options.onKey,
	onRender: options.onRender
	};
	this._modalStack.push(modal);
	return modal;
	}

	popModal(id) {
	let idx = -1;
	if (id) {
	idx = this._modalStack.findIndex(m => m.id === id);
	} else {
	idx = this._modalStack.length - 1;
	}

	if (idx >= 0) {
	const modal = this._modalStack[idx];
	this._modalStack.splice(idx, 1);
	this._buffer = modal.savedBuffer;
	return true;
	}
	return false;
	}

	hasModal(id) {
	if (id) return this._modalStack.some(m => m.id === id);
	return this._modalStack.length > 0;
	}

	getModal(id) {
	if (id) return this._modalStack.find(m => m.id === id);
	return this._modalStack[this._modalStack.length - 1];
	}

	renderModal(modal, renderFn) {
	const { x, y, width, height, savedBuffer } = modal;

	for (let row = 0; row < this._height; row++) {
	this._buffer.lines[row] = savedBuffer.lines[row];
	}

	const modalBuffer = new Buffer(width, height);
	renderFn(modalBuffer, width, height);

	for (let row = 0; row < height && y + row < this._height; row++) {
	if (y + row < 0) continue;
	const modalLine = modalBuffer.lines[row];
	const bgLine = this._buffer.lines[y + row];
	const bgStripped = stripAnsi(bgLine);

	const before = bgStripped.slice(0, Math.max(0, x));
	const after = bgStripped.slice(x + width);

	this._buffer.lines[y + row] = pad(before, x) + modalLine + after;
	}
	}

	render() {
	for (const modal of this._modalStack) {
	if (modal.onRender) {
	this.renderModal(modal, modal.onRender);
	}
	}

	const output = this._buffer.render();
	this.stdout.write(
	codes.syncStart +
	codes.home +
	output +
	codes.syncEnd
	);
	this._prevBuffer = this._buffer.clone();
	}

	exit(code = 0) {
	this._cleanup();
	process.exit(code);
	}
	}

	export class List {
	constructor(options = {}) {
	this.items = options.items \|\| [];
	this.index = options.index \|\| 0;
	this.x = options.x \|\| 0;
	this.y = options.y \|\| 0;
	this.width = options.width \|\| 40;
	this.height = options.height \|\| 10;
	this.selectedStyle = options.selectedStyle \|\| colors.bgBlue + colors.bold;
	this.normalStyle = options.normalStyle \|\| '';
	this.renderItem = options.renderItem \|\| (item => String(item));
	this.scrollOffset = 0;
	}

	setItems(items) {
	this.items = items;
	this.index = Math.min(this.index, Math.max(0, items.length - 1));
	this._updateScroll();
	}

	select(index) {
	this.index = Math.max(0, Math.min(this.items.length - 1, index));
	this._updateScroll();
	}

	selectNext() {
	this.select(this.index + 1);
	}

	selectPrev() {
	this.select(this.index - 1);
	}

	pageDown(amount = 10) {
	this.select(this.index + amount);
	}

	pageUp(amount = 10) {
	this.select(this.index - amount);
	}

	selectFirst() {
	this.select(0);
	}

	selectLast() {
	this.select(this.items.length - 1);
	}

	getSelected() {
	return this.items[this.index];
	}

	_updateScroll() {
	const half = Math.floor(this.height / 2);
	let start = this.index - half;
	if (start < 0) start = 0;
	if (start + this.height > this.items.length) {
	start = Math.max(0, this.items.length - this.height);
	}
	this.scrollOffset = start;
	}

	handleKey(key) {
	switch (key) {
	case keys.UP:
	case 'k':
	this.selectPrev();
	return true;
	case keys.DOWN:
	case 'j':
	this.selectNext();
	return true;
	case keys.PAGE_UP:
	this.pageUp();
	return true;
	case keys.PAGE_DOWN:
	this.pageDown();
	return true;
	case 'g':
	this.selectFirst();
	return true;
	case 'G':
	this.selectLast();
	return true;
	}
	return false;
	}

	render(screen) {
	const end = Math.min(this.scrollOffset + this.height, this.items.length);

	for (let i = this.scrollOffset; i < end; i++) {
	const row = this.y + (i - this.scrollOffset);
	const item = this.items[i];
	const text = truncate(this.renderItem(item, i), this.width);
	const isSelected = i === this.index;
	const style = isSelected ? this.selectedStyle : this.normalStyle;

	screen.write(this.x, row, pad(style + text + codes.reset, this.width));
	}

	for (let i = end - this.scrollOffset; i < this.height; i++) {
	screen.write(this.x, this.y + i, ' '.repeat(this.width));
	}
	}
	}

	export class ProgressBar {
	constructor(options = {}) {
	this.value = options.value \|\| 0;
	this.max = options.max \|\| 100;
	this.width = options.width \|\| 20;
	this.filled = options.filled \|\| '█';
	this.empty = options.empty \|\| '░';
	this.filledStyle = options.filledStyle \|\| colors.green;
	this.emptyStyle = options.emptyStyle \|\| colors.dim;
	this.showPercent = options.showPercent !== false;
	}

	setValue(value) {
	this.value = Math.max(0, Math.min(this.max, value));
	}

	render() {
	const ratio = this.value / this.max;
	const filledCount = Math.round(ratio * this.width);
	const emptyCount = this.width - filledCount;

	let bar = this.filledStyle + this.filled.repeat(filledCount) + codes.reset;
	bar += this.emptyStyle + this.empty.repeat(emptyCount) + codes.reset;

	if (this.showPercent) {
	const percent = (ratio * 100).toFixed(0);
	bar += ` ${percent}%`;
	}

	return bar;
	}
	}

	export class Input {
	constructor(options = {}) {
	this.value = options.value \|\| '';
	this.placeholder = options.placeholder \|\| '';
	this.width = options.width \|\| 20;
	this.cursorPos = this.value.length;
	this.style = options.style \|\| '';
	this.cursorStyle = options.cursorStyle \|\| colors.inverse;
	}

	setValue(value) {
	this.value = value;
	this.cursorPos = value.length;
	}

	clear() {
	this.value = '';
	this.cursorPos = 0;
	}

	handleKey(key) {
	if (key === keys.BACKSPACE \|\| key === '\b') {
	if (this.cursorPos > 0) {
	this.value = this.value.slice(0, this.cursorPos - 1) + this.value.slice(this.cursorPos);
	this.cursorPos--;
	}
	return true;
	} else if (key === keys.DELETE) {
	if (this.cursorPos < this.value.length) {
	this.value = this.value.slice(0, this.cursorPos) + this.value.slice(this.cursorPos + 1);
	}
	return true;
	} else if (key === keys.LEFT) {
	this.cursorPos = Math.max(0, this.cursorPos - 1);
	return true;
	} else if (key === keys.RIGHT) {
	this.cursorPos = Math.min(this.value.length, this.cursorPos + 1);
	return true;
	} else if (key === keys.HOME) {
	this.cursorPos = 0;
	return true;
	} else if (key === keys.END) {
	this.cursorPos = this.value.length;
	return true;
	} else if (key.length === 1 && key >= ' ' && key <= '~') {
	this.value = this.value.slice(0, this.cursorPos) + key + this.value.slice(this.cursorPos);
	this.cursorPos++;
	return true;
	}
	return false;
	}

	render() {
	let display = this.value \|\| this.placeholder;
	const isPlaceholder = !this.value && this.placeholder;

	if (isPlaceholder) {
	display = colors.dim + display + codes.reset;
	}

	if (this.value.length > 0) {
	const before = this.value.slice(0, this.cursorPos);
	const cursor = this.value[this.cursorPos] \|\| ' ';
	const after = this.value.slice(this.cursorPos + 1);
	display = this.style + before + this.cursorStyle + cursor + codes.reset + this.style + after + codes.reset;
	} else {
	display = this.style + this.cursorStyle + ' ' + codes.reset;
	}

	return truncate(display, this.width);
	}
	}

	export class Table {
	constructor(options = {}) {
	this.columns = options.columns \|\| [];
	this.rows = options.rows \|\| [];
	this.x = options.x \|\| 0;
	this.y = options.y \|\| 0;
	this.width = options.width;
	this.headerStyle = options.headerStyle \|\| colors.bold;
	this.rowStyle = options.rowStyle \|\| '';
	this.altRowStyle = options.altRowStyle \|\| colors.dim;
	this.borderStyle = options.borderStyle \|\| box.light;
	this.showBorder = options.showBorder !== false;
	}

	_calcColumnWidths() {
	const widths = this.columns.map(col => visibleLength(col.header \|\| col.key));

	for (const row of this.rows) {
	for (let i = 0; i < this.columns.length; i++) {
	const col = this.columns[i];
	const value = String(row[col.key] ?? '');
	widths[i] = Math.max(widths[i], visibleLength(value));
	}
	}

	if (this.width) {
	const totalWidth = widths.reduce((a, b) => a + b, 0);
	const available = this.width - (this.showBorder ? this.columns.length + 1 : 0);
	if (totalWidth > available) {
	const scale = available / totalWidth;
	for (let i = 0; i < widths.length; i++) {
	widths[i] = Math.floor(widths[i] * scale);
	}
	}
	}

	return widths;
	}

	render(screen) {
	const widths = this._calcColumnWidths();
	const bs = this.borderStyle;
	let row = this.y;

	if (this.showBorder) {
	let top = bs.tl;
	for (let i = 0; i < widths.length; i++) {
	top += bs.h.repeat(widths[i] + 2);
	top += i < widths.length - 1 ? bs.tT : bs.tr;
	}
	screen.write(this.x, row++, top);
	}

	let header = this.showBorder ? bs.v : '';
	for (let i = 0; i < this.columns.length; i++) {
	const col = this.columns[i];
	const text = pad(col.header \|\| col.key, widths[i]);
	header += ' ' + this.headerStyle + text + codes.reset + ' ';
	if (this.showBorder) header += bs.v;
	}
	screen.write(this.x, row++, header);

	if (this.showBorder) {
	let sep = bs.lT;
	for (let i = 0; i < widths.length; i++) {
	sep += bs.h.repeat(widths[i] + 2);
	sep += i < widths.length - 1 ? bs.cross : bs.rT;
	}
	screen.write(this.x, row++, sep);
	}

	for (let r = 0; r < this.rows.length; r++) {
	const data = this.rows[r];
	const style = r % 2 === 0 ? this.rowStyle : this.altRowStyle;
	let line = this.showBorder ? bs.v : '';
	for (let i = 0; i < this.columns.length; i++) {
	const col = this.columns[i];
	const value = String(data[col.key] ?? '');
	const text = pad(truncate(value, widths[i]), widths[i]);
	line += ' ' + style + text + codes.reset + ' ';
	if (this.showBorder) line += bs.v;
	}
	screen.write(this.x, row++, line);
	}

	if (this.showBorder) {
	let bottom = bs.bl;
	for (let i = 0; i < widths.length; i++) {
	bottom += bs.h.repeat(widths[i] + 2);
	bottom += i < widths.length - 1 ? bs.bT : bs.br;
	}
	screen.write(this.x, row++, bottom);
	}

	return row - this.y;
	}
	}

	export function modal(screen, options) {
	const width = options.width \|\| 40;
	const height = options.height \|\| 10;
	const x = options.x ?? Math.floor((screen.width - width) / 2);
	const y = options.y ?? Math.floor((screen.height - height) / 2);
	const title = options.title \|\| '';
	const titleStyle = options.titleStyle \|\| colors.bold;
	const borderStyle = options.borderStyle \|\| box.rounded;
	const bgStyle = options.bgStyle \|\| '';

	return screen.pushModal({
	id: options.id,
	x,
	y,
	width,
	height,
	onKey: options.onKey,
	onRender: (buf, w, h) => {
	buf.fill(0, 0, w, h, ' ');
	buf.box(0, 0, w, h, borderStyle, title, titleStyle);

	if (options.render) {
	options.render(buf, w - 2, h - 2, 1, 1);
	}
	}
	});
	}

	export function confirm(screen, options) {
	return new Promise(resolve => {
	const message = options.message \|\| 'Are you sure?';
	const width = Math.max(visibleLength(message) + 4, 30);
	const height = 7;

	modal(screen, {
	id: 'confirm',
	width,
	height,
	title: options.title \|\| 'Confirm',
	titleStyle: colors.bold + colors.yellow,
	onKey: key => {
	if (key === 'y' \|\| key === 'Y' \|\| key === keys.ENTER) {
	screen.popModal('confirm');
	screen.render();
	resolve(true);
	} else if (key === 'n' \|\| key === 'N' \|\| key === keys.ESCAPE \|\| key === keys.CTRL_C) {
	screen.popModal('confirm');
	screen.render();
	resolve(false);
	}
	return false;
	},
	render: (buf, w, h, ox, oy) => {
	buf.writeStyled(ox, oy + 1, padCenter(message, w));
	buf.writeStyled(ox, oy + 3, padCenter(`${colors.green}[Y]es${codes.reset} ${colors.red}[N]o${codes.reset}`, w + 20));
	}
	});
	screen.render();
	});
	}

	export function alert(screen, options) {
	return new Promise(resolve => {
	const message = options.message \|\| '';
	const lines = wrap(message, 50);
	const width = Math.max(...lines.map(visibleLength), 20) + 4;
	const height = lines.length + 5;

	modal(screen, {
	id: 'alert',
	width,
	height,
	title: options.title \|\| 'Alert',
	titleStyle: colors.bold + colors.cyan,
	onKey: key => {
	if (key === keys.ENTER \|\| key === keys.ESCAPE \|\| key === ' ') {
	screen.popModal('alert');
	screen.render();
	resolve();
	}
	return false;
	},
	render: (buf, w, h, ox, oy) => {
	for (let i = 0; i < lines.length; i++) {
	buf.writeStyled(ox, oy + i + 1, padCenter(lines[i], w));
	}
	buf.writeStyled(ox, oy + lines.length + 2, padCenter(`${colors.dim}[Enter] OK${codes.reset}`, w + 10));
	}
	});
	screen.render();
	});
	}

	export default {
	codes,
	colors,
	box,
	keys,
	stripAnsi,
	visibleLength,
	pad,
	padStart,
	padCenter,
	truncate,
	wrap,
	Buffer,
	Screen,
	List,
	ProgressBar,
	Input,
	Table,
	modal,
	confirm,
	alert
	};

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