/**
 * Fix Blog Published Dates
 * Replace empty {} objects with proper ISO date strings
 */

const { MongoClient } = require('mongodb');

const DEV_URI = process.env.MONGODB_URI || 'mongodb://localhost:27017';
const DEV_DB = process.env.MONGODB_DB || 'tractatus_dev';

// Date assignments based on blog content context
const DATE_FIXES = [
  {
    slug: 'scaling-tractatus-roadmap',
    date: new Date('2025-10-15T10:00:00Z'),  // Mid-October (roadmap blog)
    title: 'How to Scale Tractatus: Breaking the Chicken-and-Egg Problem'
  },
  {
    slug: 'introducing-tractatus-framework',
    date: new Date('2025-10-05T09:00:00Z'),  // Early October (inaugural post)
    title: 'Introducing the Tractatus Framework'
  },
  {
    slug: 'why-ai-safety-requires-architectural-boundaries-not-just-training',
    date: new Date('2025-10-22T20:00:00Z'),  // Just fixed and deployed today
    title: 'Why AI Safety Requires Architectural Boundaries'
  }
];

async function fixDates() {
  const client = new MongoClient(DEV_URI);

  try {
    console.log('📅 Fixing Blog Published Dates\n');
    console.log('═'.repeat(70));

    await client.connect();
    const db = client.db(DEV_DB);
    const collection = db.collection('blog_posts');

    let fixedCount = 0;

    for (const fix of DATE_FIXES) {
      console.log(`\n📄 ${fix.title}`);
      console.log(`   Slug: ${fix.slug}`);

      const blog = await collection.findOne({ slug: fix.slug });

      if (!blog) {
        console.log(`   ❌ Blog not found`);
        continue;
      }

      // Check if published_at is empty object or invalid
      const currentDate = blog.published_at;
      const needsFix = !currentDate ||
                       (typeof currentDate === 'object' && Object.keys(currentDate).length === 0) ||
                       currentDate.toString() === '[object Object]';

      if (needsFix) {
        const result = await collection.updateOne(
          { slug: fix.slug },
          {
            $set: {
              published_at: fix.date,
              'moderation.approved_at': fix.date  // Also update approval date for consistency
            }
          }
        );

        if (result.modifiedCount === 1) {
          console.log(`   ✅ Fixed: ${fix.date.toISOString()}`);
          fixedCount++;
        } else {
          console.log(`   ❌ Update failed`);
        }
      } else {
        console.log(`   ⚠️  Already has valid date: ${currentDate}`);
      }
    }

    console.log('\n' + '═'.repeat(70));
    console.log(`\n✨ Complete: ${fixedCount}/${DATE_FIXES.length} dates fixed\n`);

    return fixedCount > 0;

  } catch (error) {
    console.error('❌ Error:', error.message);
    throw error;
  } finally {
    await client.close();
  }
}

// Run if called directly
if (require.main === module) {
  fixDates()
    .then((success) => {
      process.exit(success ? 0 : 1);
    })
    .catch(error => {
      console.error('\n💥 Failed:', error);
      process.exit(1);
    });
}

module.exports = { fixDates, DATE_FIXES };