#!/usr/bin/env node

const fs = require('fs');
const path = require('path');
const { execSync } = require('child_process');

console.log('🚀 CKEditor5 Migration Script');
console.log('============================\n');

// Check current setup
const packageJsonPath = path.join(process.cwd(), 'package.json');
const vendorPath = path.join(process.cwd(), 'vendor', 'ckeditor5');

if (!fs.existsSync(packageJsonPath)) {
  console.error('❌ package.json not found');
  process.exit(1);
}

const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf8'));
const hasCustomBuild = fs.existsSync(vendorPath);
const hasCKEditorReact = packageJson.dependencies && packageJson.dependencies['@ckeditor/ckeditor5-react'];

console.log('📊 Current Setup Analysis:');
console.log(`- Custom CKEditor5 build: ${hasCustomBuild ? '✅ Found' : '❌ Not found'}`);
console.log(`- CKEditor5 React: ${hasCKEditorReact ? '✅ Installed' : '❌ Not installed'}`);
console.log(`- Bundle size: ${hasCustomBuild ? '~2.4MB' : 'Unknown'}\n`);

// Show options
console.log('🎯 Available Optimization Options:');
console.log('1. TinyMCE (Recommended) - 200KB bundle, 90% reduction');
console.log('2. CKEditor5 Classic - 800KB bundle, 67% reduction');
console.log('3. React Quill - 100KB bundle, 96% reduction');
console.log('4. Exit without changes\n');

// Get user choice
const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question('Choose your option (1-4): ', (choice) => {
  rl.close();
  
  switch (choice.trim()) {
    case '1':
      migrateToTinyMCE();
      break;
    case '2':
      migrateToCKEditorClassic();
      break;
    case '3':
      migrateToReactQuill();
      break;
    case '4':
      console.log('👋 Migration cancelled');
      process.exit(0);
    default:
      console.log('❌ Invalid choice');
      process.exit(1);
  }
});

function migrateToTinyMCE() {
  console.log('\n🔄 Migrating to TinyMCE...');
  
  try {
    // Remove old dependencies
    if (hasCKEditorReact) {
      console.log('📦 Removing old CKEditor dependencies...');
      execSync('npm uninstall @ckeditor/ckeditor5-react --legacy-peer-deps', { stdio: 'inherit' });
    }
    
    // Install TinyMCE
    console.log('📦 Installing TinyMCE...');
    execSync('npm install @tinymce/tinymce-react --legacy-peer-deps', { stdio: 'inherit' });
    
    // Remove custom build
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to TinyMCE completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use OptimizedEditor');
    console.log('2. Test the new implementation');
    console.log('3. Update any image upload handlers');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}

function migrateToCKEditorClassic() {
  console.log('\n🔄 Migrating to CKEditor5 Classic...');
  
  try {
    // Remove custom build dependency
    if (packageJson.dependencies && packageJson.dependencies['ckeditor5-custom-build']) {
      console.log('📦 Removing custom build dependency...');
      execSync('npm uninstall ckeditor5-custom-build --legacy-peer-deps', { stdio: 'inherit' });
    }
    
    // Install official builds
    console.log('📦 Installing CKEditor5 Classic...');
    execSync('npm install @ckeditor/ckeditor5-build-classic @ckeditor/ckeditor5-react --legacy-peer-deps', { stdio: 'inherit' });
    
    // Remove custom build
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to CKEditor5 Classic completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use OptimizedCKEditor');
    console.log('2. Test the new implementation');
    console.log('3. Update any custom configurations');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}

function migrateToReactQuill() {
  console.log('\n🔄 Migrating to React Quill...');
  
  try {
    // Remove old dependencies
    if (hasCKEditorReact) {
      console.log('📦 Removing old CKEditor dependencies...');
      execSync('npm uninstall @ckeditor/ckeditor5-react --legacy-peer-deps', { stdio: 'inherit' });
    }
    
    // Install React Quill
    console.log('📦 Installing React Quill...');
    execSync('npm install react-quill --legacy-peer-deps', { stdio: 'inherit' });
    
    // Remove custom build
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to React Quill completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use MinimalEditor');
    console.log('2. Test the new implementation');
    console.log('3. Adjust any advanced features to basic ones');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}