/**
 * Reorganize document categories as requested:
 * 1. Move implementation guides from getting-started to resources category
 * 2. Move Glossary from technical-reference to getting-started
 * 3. Ensure Research & Theory section is collapsed by default
 */
const { MongoClient } = require('mongodb');
require('dotenv').config({ path: '/var/www/tractatus/.env' });

async function run() {
  const MONGODB_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017';
  const DB_NAME = process.env.MONGODB_DB || 'tractatus_prod';

  const client = new MongoClient(MONGODB_URI);
  await client.connect();

  console.log('═══════════════════════════════════════════════════════════');
  console.log('  REORGANIZING DOCUMENT CATEGORIES');
  console.log('═══════════════════════════════════════════════════════════\n');

  const db = client.db(DB_NAME);
  const collection = db.collection('documents');

  // 1. Find guides in Getting Started
  console.log('1️⃣  Finding implementation guides in Getting Started...\n');

  const guides = await collection.find({
    category: 'getting-started',
    slug: { $in: [
      'implementation-guide-v1.1',
      'implementation-guide',
      'implementation-guide-python-examples'
    ]}
  }).project({ slug: 1, title: 1 }).toArray();

  console.log(`Found ${guides.length} guides:`);
  guides.forEach(g => console.log(`  - ${g.slug}`));

  // 2. Move guides to resources category
  if (guides.length > 0) {
    console.log('\n📝 Moving guides to resources category...\n');

    const result = await collection.updateMany(
      { slug: { $in: guides.map(g => g.slug) } },
      {
        $set: {
          category: 'resources',
          updated_at: new Date()
        }
      }
    );

    console.log(`✅ Moved ${result.modifiedCount} guides to resources`);
  }

  // 3. Move Glossary to getting-started
  console.log('\n2️⃣  Moving Glossary to Getting Started...\n');

  const glossaryResult = await collection.updateOne(
    { slug: 'GLOSSARY' },
    {
      $set: {
        category: 'getting-started',
        order: 10,
        updated_at: new Date()
      }
    }
  );

  if (glossaryResult.modifiedCount > 0) {
    console.log('✅ Glossary moved to getting-started (order: 10)');
  } else {
    console.log('⚠️  Glossary not found or already in getting-started');
  }

  // 4. Verify final state
  console.log('\n3️⃣  Verifying final categories...\n');

  const gettingStarted = await collection.find({ category: 'getting-started', visibility: 'public' })
    .project({ slug: 1, title: 1, order: 1 })
    .sort({ order: 1 })
    .toArray();

  console.log(`Getting Started (${gettingStarted.length} documents):`);
  gettingStarted.forEach(d => console.log(`  [${d.order}] ${d.slug}`));

  const resources = await collection.find({ category: 'resources', visibility: 'public' })
    .project({ slug: 1, title: 1, order: 1 })
    .sort({ order: 1 })
    .toArray();

  console.log(`\nResources (${resources.length} documents):`);
  resources.forEach(d => console.log(`  [${d.order || 'none'}] ${d.slug}`));

  await client.close();

  console.log('\n═══════════════════════════════════════════════════════════');
  console.log('  REORGANIZATION COMPLETE');
  console.log('═══════════════════════════════════════════════════════════\n');
}

run().catch(console.error);