password-generator-libry/passwordGenerator.js

quality generation of strong passwords

const readline = require('readline')

const passwordGenerator = {
    generatePassword(length = 12, options = {}) {
        const {
            uppercase = true,
            lowercase = true,
            numbers = true,
            symbols = true
        } = options;

        if (!uppercase && !lowercase && !numbers && !symbols) {
            throw new Error("Выберите один из предложенных типов символов!");
        }

        const uppercaseChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        const lowercaseChars = 'abcdefghijklmnopqrstuvwxyz';
        const numberChars = '1234567890';
        const symbolChars = '!@#$%^&*()_+[]{}|;:,.<>?';

        let characterPool = '';

        if (uppercase) characterPool += uppercaseChars;
        if (lowercase) characterPool += lowercaseChars;
        if (numbers) characterPool += numberChars;
        if (symbols) characterPool += symbolChars;

        let password = '';

        for (let i = 0; i < length; i++) {
            const randomIndex = Math.floor(Math.random() * characterPool.length);
            password += characterPool[randomIndex];
        }
        return password;
    }
}

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });
  
  rl.question("Введите длину пароля: ", (lengthInput) => {
    const length = parseInt(lengthInput, 10);
  
    rl.question("Включить заглавные буквы? (yes/no): ", (uppercaseInput) => {
      const uppercase = uppercaseInput.toLowerCase() === "yes" || uppercaseInput.toLowerCase() === "y";
  
      rl.question("Включить строчные буквы? (yes/no): ", (lowercaseInput) => {
        const lowercase = lowercaseInput.toLowerCase() === "yes" || lowercaseInput.toLowerCase() === "y";
  
        rl.question("Включить цифры? (yes/no): ", (numbersInput) => {
          const numbers = numbersInput.toLowerCase() === "yes" || numbersInput.toLowerCase() === "y";
  
          rl.question("Включить специальные символы? (yes/no): ", (symbolsInput) => {
            const symbols = symbolsInput.toLowerCase() === "yes" || symbolsInput.toLowerCase() === "y";
  
            const options = { uppercase, lowercase, numbers, symbols };
  
            try {
              const password = passwordGenerator.generatePassword(length, options);
              console.log("Сгенерированный пароль:", password);
            } catch (error) {
              console.error(error.message);
            }
  
            rl.close();
          });
        });
      });
    });
  });

module.exports = passwordGenerator;