#!/usr/bin/env node

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

console.log('🚀 CKEditor5 Migration to Official Packages');
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'];
const hasCustomBuildDep = packageJson.dependencies && packageJson.dependencies['ckeditor5-custom-build'];

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

// Show available official builds
console.log('🎯 Available Official CKEditor5 Builds:');
console.log('1. Classic Build - Full-featured editor (800KB)');
console.log('2. Decoupled Document - Document-style editor (1MB)');
console.log('3. Inline Build - Inline editing (600KB)');
console.log('4. Super Build - All features (1.5MB)');
console.log('5. 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 build (1-5): ', (choice) => {
  rl.close();
  
  switch (choice.trim()) {
    case '1':
      migrateToClassic();
      break;
    case '2':
      migrateToDecoupled();
      break;
    case '3':
      migrateToInline();
      break;
    case '4':
      migrateToSuper();
      break;
    case '5':
      console.log('👋 Migration cancelled');
      process.exit(0);
    default:
      console.log('❌ Invalid choice');
      process.exit(1);
  }
});

function migrateToClassic() {
  console.log('\n🔄 Migrating to CKEditor5 Classic Build...');
  
  try {
    // Remove custom build dependency
    if (hasCustomBuildDep) {
      console.log('📦 Removing custom build dependency...');
      execSync('npm uninstall ckeditor5-custom-build', { stdio: 'inherit' });
    }
    
    // Install official classic build
    console.log('📦 Installing CKEditor5 Classic Build...');
    execSync('npm install @ckeditor/ckeditor5-build-classic', { stdio: 'inherit' });
    
    // Remove custom build directory
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to Classic Build completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use ImprovedCKEditor');
    console.log('2. Replace imports from "ckeditor5-custom-build" to "@ckeditor/ckeditor5-build-classic"');
    console.log('3. Test the new implementation');
    console.log('4. Update any custom configurations');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}

function migrateToDecoupled() {
  console.log('\n🔄 Migrating to CKEditor5 Decoupled Document Build...');
  
  try {
    // Remove custom build dependency
    if (hasCustomBuildDep) {
      console.log('📦 Removing custom build dependency...');
      execSync('npm uninstall ckeditor5-custom-build', { stdio: 'inherit' });
    }
    
    // Install official decoupled build
    console.log('📦 Installing CKEditor5 Decoupled Document Build...');
    execSync('npm install @ckeditor/ckeditor5-build-decoupled-document', { stdio: 'inherit' });
    
    // Remove custom build directory
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to Decoupled Document Build completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use ImprovedCKEditor with features="document"');
    console.log('2. Replace imports from "ckeditor5-custom-build" to "@ckeditor/ckeditor5-build-decoupled-document"');
    console.log('3. Test the new implementation');
    console.log('4. Update any custom configurations');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}

function migrateToInline() {
  console.log('\n🔄 Migrating to CKEditor5 Inline Build...');
  
  try {
    // Remove custom build dependency
    if (hasCustomBuildDep) {
      console.log('📦 Removing custom build dependency...');
      execSync('npm uninstall ckeditor5-custom-build', { stdio: 'inherit' });
    }
    
    // Install official inline build
    console.log('📦 Installing CKEditor5 Inline Build...');
    execSync('npm install @ckeditor/ckeditor5-build-inline', { stdio: 'inherit' });
    
    // Remove custom build directory
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to Inline Build completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use ImprovedCKEditor with features="inline"');
    console.log('2. Replace imports from "ckeditor5-custom-build" to "@ckeditor/ckeditor5-build-inline"');
    console.log('3. Test the new implementation');
    console.log('4. Update any custom configurations');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}

function migrateToSuper() {
  console.log('\n🔄 Migrating to CKEditor5 Super Build...');
  
  try {
    // Remove custom build dependency
    if (hasCustomBuildDep) {
      console.log('📦 Removing custom build dependency...');
      execSync('npm uninstall ckeditor5-custom-build', { stdio: 'inherit' });
    }
    
    // Install official super build
    console.log('📦 Installing CKEditor5 Super Build...');
    execSync('npm install @ckeditor/ckeditor5-build-super-build', { stdio: 'inherit' });
    
    // Remove custom build directory
    if (hasCustomBuild) {
      console.log('🗑️ Removing custom CKEditor5 build...');
      execSync('rm -rf vendor/ckeditor5', { stdio: 'inherit' });
    }
    
    console.log('\n✅ Migration to Super Build completed!');
    console.log('📝 Next steps:');
    console.log('1. Update your editor components to use ImprovedCKEditor with features="full"');
    console.log('2. Replace imports from "ckeditor5-custom-build" to "@ckeditor/ckeditor5-build-super-build"');
    console.log('3. Test the new implementation');
    console.log('4. Update any custom configurations');
    
  } catch (error) {
    console.error('❌ Migration failed:', error.message);
    process.exit(1);
  }
}