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readline.js
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readline.js
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import * as readline from 'node:readline';
const COLORS = {
reset: '\x1b[0m',
bold: '\x1b[1m',
dim: '\x1b[2m',
italic: '\x1b[3m',
underline: '\x1b[4m',
black: '\x1b[30m',
red: '\x1b[31m',
green: '\x1b[32m',
yellow: '\x1b[33m',
blue: '\x1b[34m',
magenta: '\x1b[35m',
cyan: '\x1b[36m',
white: '\x1b[37m',
bgBlack: '\x1b[40m',
bgRed: '\x1b[41m',
bgGreen: '\x1b[42m',
bgYellow: '\x1b[43m',
bgBlue: '\x1b[44m',
bgMagenta: '\x1b[45m',
bgCyan: '\x1b[46m',
bgWhite: '\x1b[47m'
};
const c = (color, text) => `${COLORS[color]}${text}${COLORS.reset}`;
const LOGO = `
${c('yellow', '╔═══════════════════════════════════════════════════════════╗')}
${c('yellow', '║')} ${c('bold', c('red', '🐜 Ant JavaScript'))} ${c('dim', '- Interactive Task Manager')} ${' '.repeat(11)} ${c('yellow', '║')}
${c('yellow', '╚═══════════════════════════════════════════════════════════╝')}
`;
const HELP = ` ${c('bold', 'Commands:')}
${c('green', 'add')} ${c('dim', '<task>')} Add a new task
${c('green', 'list')} List all tasks
${c('green', 'done')} ${c('dim', '<id>')} Mark task as complete
${c('green', 'remove')} ${c('dim', '<id>')} Remove a task
${c('green', 'clear')} Clear all tasks
${c('green', 'stats')} Show statistics
${c('green', 'help')} Show this help
${c('green', 'quit')} Exit the app`;
class TaskManager {
constructor() {
this.tasks = [];
this.nextId = 1;
}
add(description) {
const task = {
id: this.nextId++,
description,
done: false,
createdAt: new Date()
};
this.tasks.push(task);
return task;
}
list() {
return this.tasks;
}
markDone(id) {
const task = this.tasks.find(t => t.id === id);
if (task) {
task.done = true;
task.completedAt = new Date();
return task;
}
return null;
}
remove(id) {
const idx = this.tasks.findIndex(t => t.id === id);
if (idx !== -1) {
return this.tasks.splice(idx, 1)[0];
}
return null;
}
clear() {
const count = this.tasks.length;
this.tasks = [];
return count;
}
stats() {
const total = this.tasks.length;
const completed = this.tasks.filter(t => t.done).length;
const pending = total - completed;
return { total, completed, pending };
}
}
function formatTask(task) {
const checkbox = task.done ? c('green', '✓') : c('dim', '○');
const id = c('dim', `#${task.id}`);
const desc = task.done ? c('dim', task.description) : task.description;
return ` ${checkbox} ${id} ${desc}`;
}
function progressBar(current, total, width = 20) {
if (total === 0) return c('dim', '░'.repeat(width));
const filled = Math.round((current / total) * width);
const empty = width - filled;
return c('green', '█'.repeat(filled)) + c('dim', '░'.repeat(empty));
}
function main() {
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
prompt: `${c('cyan', '❯')} `,
historySize: 100,
removeHistoryDuplicates: true
});
const manager = new TaskManager();
console.log(LOGO);
console.log(c('dim', ' Type "help" for available commands\n'));
manager.add('Learn the Ant JavaScript runtime');
manager.add('Build something awesome');
manager.add('Read the documentation');
rl.prompt();
rl.on('line', input => {
const line = input.trim();
const [cmd, ...args] = line.split(/\s+/);
const arg = args.join(' ');
console.log();
switch (cmd?.toLowerCase()) {
case 'add': {
if (!arg) {
console.log(` ${c('red', '✗')} Please provide a task description`);
break;
}
const task = manager.add(arg);
console.log(` ${c('green', '✓')} Added: ${formatTask(task)}`);
break;
}
case 'list':
case 'ls': {
const tasks = manager.list();
if (tasks.length === 0) {
console.log(` ${c('dim', 'No tasks yet. Use "add <task>" to create one.')}`);
} else {
console.log(` ${c('bold', 'Tasks:')}\n`);
for (const task of tasks) {
console.log(formatTask(task));
}
}
break;
}
case 'done':
case 'complete': {
const id = parseInt(arg);
if (isNaN(id)) {
console.log(` ${c('red', '✗')} Please provide a valid task ID`);
break;
}
const task = manager.markDone(id);
if (task) {
console.log(` ${c('green', '✓')} Completed: ${formatTask(task)}`);
} else {
console.log(` ${c('red', '✗')} Task #${id} not found`);
}
break;
}
case 'remove':
case 'rm':
case 'delete': {
const id = parseInt(arg);
if (isNaN(id)) {
console.log(` ${c('red', '✗')} Please provide a valid task ID`);
break;
}
const task = manager.remove(id);
if (task) {
console.log(` ${c('yellow', '✗')} Removed: ${c('dim', task.description)}`);
} else {
console.log(` ${c('red', '✗')} Task #${id} not found`);
}
break;
}
case 'clear': {
const count = manager.clear();
console.log(` ${c('yellow', '✗')} Cleared ${count} task(s)`);
break;
}
case 'stats': {
const stats = manager.stats();
const percent = stats.total > 0 ? Math.round((stats.completed / stats.total) * 100) : 0;
console.log(` ${c('bold', 'Statistics:')}\n`);
console.log(` Total: ${c('cyan', stats.total)}`);
console.log(` Completed: ${c('green', stats.completed)}`);
console.log(` Pending: ${c('yellow', stats.pending)}`);
console.log();
console.log(` Progress: ${progressBar(stats.completed, stats.total)} ${percent}%`);
break;
}
case 'help':
case '?': {
console.log(HELP);
break;
}
case 'quit':
case 'exit':
case 'q': {
console.log(` ${c('cyan', 'Goodbye!')} 👋`);
rl.close();
return;
}
case '': {
break;
}
default: {
console.log(` ${c('red', '✗')} Unknown command: ${c('dim', cmd)}`);
console.log(` ${c('dim', 'Type "help" for available commands')}`);
}
}
console.log();
rl.prompt();
});
rl.on('close', () => {
process.exit(0);
});
}
main();

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application/javascript
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Fri, Mar 27, 10:57 AM (2 d)
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readline.js (6 KB)

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