/**
 * Database Migrations Runner
 * Runs automatically on app startup
 */

import { drizzle } from 'drizzle-orm/mysql2'
import { migrate } from 'drizzle-orm/mysql2/migrator'
import mysql from 'mysql2/promise'

export async function runMigrations() {
  console.log('🔄 Running database migrations...')

  const connection = await mysql.createConnection({
    host: process.env.DB_HOST,
    port: parseInt(process.env.DB_PORT || '3306'),
    user: process.env.DB_USER,
    password: process.env.DB_PASSWORD,
    database: process.env.DB_NAME,
  })

  const db = drizzle(connection)

  try {
    await migrate(db, { migrationsFolder: './drizzle/migrations' })
    console.log('✅ Migrations completed successfully')
    await connection.end()
    return true
  } catch (error: any) {
    // If table already exists, it's not a fatal error
    const errorMessage = error?.message || String(error)
    const errorCode = error?.code || error?.cause?.code
    const errorErrno = error?.errno || error?.cause?.errno

    if (
      errorCode === 'ER_TABLE_EXISTS_ERROR' ||
      errorErrno === 1050 ||
      errorMessage.includes('already exists')
    ) {
      console.log('⚠️  Tables already exist, skipping migrations')
      await connection.end()
      return true
    }

    console.error('❌ Migration failed:', error)
    await connection.end()
    throw error
  }
}

// Run if executed directly
if (import.meta.main) {
  await runMigrations()
  process.exit(0)
}