cloudapp-dl/lib/prompt.js

CloudApp/Zight API client and CLI. Use as a CLI tool to download videos or as a programmatic library to interact with the Zight API.

import readline from 'readline';

/**
 * Create a readline interface
 * @returns {Object} - Readline interface
 */
const createInterface = () => {
  return readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });
};

/**
 * Prompt user for input
 * @param {string} question - The question to ask
 * @returns {Promise<string>} - User's response
 */
export const prompt = (question) => {
  return new Promise((resolve) => {
    const rl = createInterface();
    rl.question(question, (answer) => {
      rl.close();
      resolve(answer);
    });
  });
};

/**
 * Prompt user for password (hidden input)
 * @param {string} question - The question to ask
 * @returns {Promise<string>} - User's password
 */
export const promptPassword = (question) => {
  return new Promise((resolve) => {
    const rl = readline.createInterface({
      input: process.stdin,
      output: process.stdout
    });

    // Mute output after question is displayed
    process.stdout.write(question);
    
    const stdin = process.stdin;
    const wasRaw = stdin.isRaw;
    
    if (stdin.isTTY) {
      stdin.setRawMode(true);
    }
    
    let password = '';
    
    const onData = (char) => {
      char = char.toString();
      
      switch (char) {
        case '\n':
        case '\r':
        case '\u0004': // Ctrl-D
          if (stdin.isTTY) {
            stdin.setRawMode(wasRaw);
          }
          stdin.removeListener('data', onData);
          rl.close();
          console.log(); // New line after password
          resolve(password);
          break;
        case '\u0003': // Ctrl-C
          if (stdin.isTTY) {
            stdin.setRawMode(wasRaw);
          }
          stdin.removeListener('data', onData);
          rl.close();
          process.exit(1);
          break;
        case '\u007F': // Backspace
          password = password.slice(0, -1);
          process.stdout.clearLine(0);
          process.stdout.cursorTo(0);
          process.stdout.write(question + '*'.repeat(password.length));
          break;
        default:
          password += char;
          process.stdout.write('*');
      }
    };
    
    stdin.on('data', onData);
  });
};

/**
 * Prompt for confirmation
 * @param {string} question - The question to ask
 * @returns {Promise<boolean>} - True if confirmed
 */
export const confirm = async (question) => {
  const answer = await prompt(`${question} (y/n): `);
  return answer.toLowerCase() === 'y' || answer.toLowerCase() === 'yes';
};

export default {
  prompt,
  promptPassword,
  confirm
};