import 'dotenv/config';
import sqlite3 from 'sqlite3';
import path from 'path';
import { fileURLToPath } from 'url';
import fs from 'fs';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const dbPath = process.env.DATABASE_PATH || path.join(__dirname, 'awards.db');

// Migration commands
const command = process.argv[2];

const db = new sqlite3.Database(dbPath, (err) => {
  if (err) {
    console.error('Failed to connect to database:', err);
    process.exit(1);
  }
});

// Create tables
function createTables() {
  return new Promise((resolve, reject) => {
    db.serialize(() => {
      db.run(`CREATE TABLE IF NOT EXISTS awards (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        category TEXT NOT NULL,
        address TEXT NOT NULL,
        submitted_by VARCHAR(255),
        emoji_tally TEXT DEFAULT '{}',
        submitted_date DATETIME DEFAULT CURRENT_TIMESTAMP,
        approved_date DATETIME,
        lat REAL,
        lng REAL
      )`, (err) => {
        if (err) {
          console.error('Error creating awards table:', err);
          reject(err);
        } else {
          console.log('✓ Created awards table');
          resolve();
        }
      });
    });
  });
}

// Seed sample data
async function seed() {
  const seedData = [
    {
      category: 'Best Pizza',
      address: '1188 Garnet Ave, San Diego, CA 92109',
      submitted_by: 'admin',
      lat: 32.7977,
      lng: -117.2514,
      approved: true
    },
    {
      category: 'Best Coffee Shop',
      address: '4876 Santa Monica Ave, San Diego, CA 92109',
      submitted_by: 'admin',
      lat: 32.7959,
      lng: -117.2346,
      approved: true
    },
    {
      category: 'Best Taco Shop',
      address: '1830 Garnet Ave, San Diego, CA 92109',
      submitted_by: 'admin',
      lat: 32.7980,
      lng: -117.2420,
      approved: true
    },
    {
      category: 'Best Sunset View',
      address: 'Crystal Pier, Pacific Beach, San Diego, CA 92109',
      submitted_by: 'admin',
      lat: 32.7965,
      lng: -117.2547,
      approved: true
    },
    {
      category: 'Best Ice Cream',
      address: '1025 Garnet Ave, San Diego, CA 92109',
      submitted_by: 'admin',
      lat: 32.7975,
      lng: -117.2470,
      approved: true
    },
    {
      category: 'Best Breakfast Spot',
      address: '4970 Cass St, San Diego, CA 92109',
      submitted_by: 'local_foodie',
      lat: 32.7962,
      lng: -117.2580,
      approved: false
    }
  ];

  console.log('Seeding database...');

  for (const item of seedData) {
    await new Promise((resolve, reject) => {
      const approvedDate = item.approved ? new Date().toISOString() : null;
      db.run(
        'INSERT INTO awards (category, address, submitted_by, emoji_tally, lat, lng, approved_date) VALUES (?, ?, ?, ?, ?, ?, ?)',
        [item.category, item.address, item.submitted_by, '{}', item.lat, item.lng, approvedDate],
        function (err) {
          if (err) {
            console.error(`✗ Failed to seed "${item.category}":`, err.message);
            reject(err);
          } else {
            console.log(`✓ Seeded: ${item.category}`);
            resolve();
          }
        }
      );
    });
  }

  console.log('✓ Database seeded successfully');
}

// Reset database (drop all tables)
function reset() {
  return new Promise((resolve, reject) => {
    db.run('DROP TABLE IF EXISTS awards', (err) => {
      if (err) {
        console.error('Error dropping awards table:', err);
        reject(err);
      } else {
        console.log('✓ Dropped awards table');
        resolve();
      }
    });
  });
}

// Backup database
function backup() {
  const backupDir = path.join(__dirname, 'backups');
  if (!fs.existsSync(backupDir)) {
    fs.mkdirSync(backupDir);
  }

  const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
  const backupPath = path.join(backupDir, `awards-${timestamp}.db`);

  fs.copyFileSync(dbPath, backupPath);
  console.log(`✓ Database backed up to: ${backupPath}`);
}

// Main execution
async function main() {
  try {
    switch (command) {
      case 'create':
        console.log('Creating tables...');
        await createTables();
        console.log('✓ Migration complete');
        break;

      case 'seed':
        console.log('Seeding database...');
        await seed();
        console.log('✓ Seed complete');
        break;

      case 'reset':
        console.log('Resetting database...');
        await reset();
        await createTables();
        console.log('✓ Database reset complete');
        break;

      case 'reset:seed':
        console.log('Resetting and seeding database...');
        await reset();
        await createTables();
        await seed();
        console.log('✓ Reset and seed complete');
        break;

      case 'backup':
        console.log('Backing up database...');
        backup();
        break;

      default:
        console.log(`
Usage: node migrate.js <command>

Commands:
  create       Create database tables
  seed         Seed database with sample data
  reset        Drop all tables and recreate them
  reset:seed   Reset database and seed with sample data
  backup       Create a backup of the database

Examples:
  node migrate.js create
  node migrate.js seed
  node migrate.js reset:seed
  node migrate.js backup
        `);
        process.exit(0);
    }

    db.close();
    process.exit(0);
  } catch (error) {
    console.error('Migration failed:', error);
    db.close();
    process.exit(1);
  }
}

main();