lyric-karaoke-cli/src/utils/index.js

A CLI application for displaying song lyrics in a karaoke-style format

const chalk = require('chalk');

/**
 * Logger utility for consistent logging throughout the application
 */
const logger = {
  /**
   * Log information messages
   * @param {string} message - The message to log
   */
  info: (message) => {
    console.log(chalk.blue('ℹ INFO: ') + message);
  },
  
  /**
   * Log success messages
   * @param {string} message - The message to log
   */
  success: (message) => {
    console.log(chalk.green('✓ SUCCESS: ') + message);
  },
  
  /**
   * Log error messages
   * @param {string} message - The message to log
   * @param {Error} [error] - Optional error object
   */
  error: (message, error) => {
    console.error(chalk.red('✗ ERROR: ') + message);
    if (error) {
      console.error(chalk.red(error.stack || error));
    }
  },
  
  /**
   * Log warning messages
   * @param {string} message - The message to log
   */
  warn: (message) => {
    console.warn(chalk.yellow('⚠ WARNING: ') + message);
  }
};

/**
 * Format lyrics for display
 * @param {string} lyrics - The raw lyrics to format
 * @returns {Array} An array of formatted lyrics lines
 */
const formatLyrics = (lyrics) => {
  if (!lyrics) {
    return [];
  }
  
  // Split by newlines and filter out empty lines
  const lines = lyrics.split('\n').filter(line => line.trim() !== '');
  
  // Process and format each line
  return lines.map(line => {
    // Handle timestamps if present (e.g., [00:24])
    const timestampMatch = line.match(/\[\d{2}:\d{2}\]/);
    if (timestampMatch) {
      const timestamp = timestampMatch[0];
      const text = line.replace(timestamp, '').trim();
      return {
        timestamp,
        text,
        formatted: chalk.dim(timestamp) + ' ' + text
      };
    }
    
    // Handle section headers (e.g., [Chorus], [Verse])
    if (line.match(/^\[.*\]$/)) {
      return {
        isSection: true,
        text: line,
        formatted: chalk.bold.yellow(line)
      };
    }
    
    // Regular lyrics line
    return {
      text: line,
      formatted: line
    };
  });
};

module.exports = {
  logger,
  formatLyrics
};