// This example demonstrates writing to standard output using process.stdout
// process.stdout is a WriteStream that writes to the console

console.log('Demonstrating process.stdout WriteStream');

// Basic writing to stdout
process.stdout.write('Hello, ');
process.stdout.write('World!\n');

// Check if stdout supports color (most terminals do)
const supportsColor = process.stdout.hasColors && process.stdout.hasColors();

if (supportsColor) {
  // ANSI color codes for terminal output
  const colors = {
    reset: '\x1b[0m',
    bright: '\x1b[1m',
    dim: '\x1b[2m',
    red: '\x1b[31m',
    green: '\x1b[32m',
    yellow: '\x1b[33m',
    blue: '\x1b[34m',
    magenta: '\x1b[35m',
    cyan: '\x1b[36m',
    white: '\x1b[37m',
    bgRed: '\x1b[41m',
    bgGreen: '\x1b[42m',
    bgYellow: '\x1b[43m',
    bgBlue: '\x1b[44m',
    bgMagenta: '\x1b[45m',
    bgCyan: '\x1b[46m',
    bgWhite: '\x1b[47m'
  };

  // Write colored output
  process.stdout.write(colors.red + 'This is red text' + colors.reset + '\n');
  process.stdout.write(colors.green + 'This is green text' + colors.reset + '\n');
  process.stdout.write(colors.blue + 'This is blue text' + colors.reset + '\n');
  process.stdout.write(colors.bgYellow + colors.blue + 'Blue on yellow background' + colors.reset + '\n');
  
  // Write progress bar
  const progressBar = (percent) => {
    const width = 40;
    const filled = Math.round(width * (percent / 100));
    const bar = '█'.repeat(filled) + '░'.repeat(width - filled);
    process.stdout.write(`\r[${bar}] ${percent}%`);
    if (percent === 100) process.stdout.write('\n');
  };

  // Animate progress bar
  console.log('\nProgress:');
  let progress = 0;
  const interval = setInterval(() => {
    progressBar(progress);
    progress += 5;
    if (progress > 100) {
      clearInterval(interval);
      console.log('Done!');
    }
  }, 100);
} else {
  console.log('Color output not supported in this environment');
  
  // Fallback progress bar without colors
  const progressBar = (percent) => {
    const width = 40;
    const filled = Math.round(width * (percent / 100));
    const bar = '='.repeat(filled) + ' '.repeat(width - filled);
    process.stdout.write(`\r[${bar}] ${percent}%`);
    if (percent === 100) process.stdout.write('\n');
  };
  
  // Animate progress bar
  console.log('\nProgress:');
  let progress = 0;
  const interval = setInterval(() => {
    progressBar(progress);
    progress += 5;
    if (progress > 100) {
      clearInterval(interval);
      console.log('Done!');
    }
  }, 100);
}