#!/usr/bin/env node

/**
 * Video MIME Type Fixer
 * 
 * This script updates the HLS video source MIME types in HTML files
 * to use the standard video/mp4 fallback type for all browsers.
 */

const fs = require('fs');
const path = require('path');

// Function to find all HTML files in a directory recursively
function findHtmlFiles(dir, fileList = []) {
  const files = fs.readdirSync(dir);
  
  files.forEach(file => {
    const filePath = path.join(dir, file);
    const stat = fs.statSync(filePath);
    
    if (stat.isDirectory()) {
      findHtmlFiles(filePath, fileList);
    } else if (path.extname(file).toLowerCase() === '.html') {
      fileList.push(filePath);
    }
  });
  
  return fileList;
}

// Function to update HLS mime types in an HTML file
function updateHlsMimeTypes(filePath) {
  try {
    let html = fs.readFileSync(filePath, 'utf8');
    const originalHtml = html;
    
    // Replace all HLS MIME types with video/mp4 which is more widely supported
    html = html.replace(/type=["']application\/x-mpegurl["']/gi, 'type="video/mp4"');
    html = html.replace(/type=["']application\/vnd\.apple\.mpegurl["']/gi, 'type="video/mp4"');
    
    // Add the script include for the fixed video initialization
    if (!html.includes('video-init-fixed.min.js')) {
      html = html.replace('</body>', '<script src="/js/video-init-fixed.min.js"></script></body>');
    }
    
    // Only write file if changes were made
    if (html !== originalHtml) {
      fs.writeFileSync(filePath, html);
      console.log(`Updated: ${filePath}`);
      return true;
    } else {
      console.log(`No changes needed: ${filePath}`);
      return false;
    }
  } catch (err) {
    console.error(`Error processing file ${filePath}: ${err.message}`);
    return false;
  }
}

// Main function
function main() {
  if (process.argv.length < 3) {
    console.error('Error: Please provide a directory path.');
    process.exit(1);
  }

  const directoryPath = process.argv[2];
  
  try {
    console.log(`\nScanning directory: ${directoryPath}`);
    const htmlFiles = findHtmlFiles(directoryPath);
    console.log(`Found ${htmlFiles.length} HTML files.`);
    
    let updatedCount = 0;
    
    htmlFiles.forEach(filePath => {
      if (updateHlsMimeTypes(filePath)) {
        updatedCount++;
      }
    });
    
    console.log(`\nUpdated ${updatedCount} of ${htmlFiles.length} HTML files.`);
    
  } catch (err) {
    console.error(`Error: ${err.message}`);
    process.exit(1);
  }
}

main();