import { getSetting, deleteOldSermons, deleteExpiredSessions, getDatabase } from '../utils/database'

// Map retention policy to days
const retentionDaysMap: Record<string, number> = {
  'forever': 0,
  '1_month': 30,
  '3_months': 90,
  '6_months': 180,
  '1_year': 365,
  '3_years': 1095,
  '5_years': 1825,
  '10_years': 3650
}

async function runSermonCleanup() {
  try {
    // Get the retention policy setting
    const setting = getSetting('sermon_retention_policy')
    const retentionPolicy = setting ? setting.value : 'forever'

    const retentionDays = retentionDaysMap[retentionPolicy] || 0

    if (retentionDays === 0) {
      console.log('[Sermon Cleanup] Retention policy is set to forever, skipping cleanup')
      return
    }

    // Delete old sermons
    const result = deleteOldSermons(retentionDays)

    if (result.changes > 0) {
      console.log(`[Sermon Cleanup] Deleted ${result.changes} sermon(s) older than ${retentionDays} days`)
    } else {
      console.log(`[Sermon Cleanup] No sermons to delete (policy: ${retentionPolicy})`)
    }
  } catch (error) {
    console.error('[Sermon Cleanup] Error running sermon cleanup:', error)
  }
}

async function runSessionCleanup() {
  try {
    const result = deleteExpiredSessions()
    if (result.changes > 0) {
      console.log(`[Session Cleanup] Deleted ${result.changes} expired session(s)`)
    }
  } catch (error) {
    console.error('[Session Cleanup] Error cleaning expired sessions:', error)
  }
}

async function runRateLimitCleanup() {
  try {
    const db = getDatabase()
    const result = db.prepare("DELETE FROM rate_limits WHERE reset_at <= datetime('now')").run()
    if (result.changes > 0) {
      console.log(`[Rate Limit Cleanup] Deleted ${result.changes} expired rate limit(s)`)
    }
  } catch (error) {
    console.error('[Rate Limit Cleanup] Error cleaning expired rate limits:', error)
  }
}

async function runPasswordResetCleanup() {
  try {
    const db = getDatabase()
    const result = db.prepare("DELETE FROM password_reset_codes WHERE expires_at <= datetime('now')").run()
    if (result.changes > 0) {
      console.log(`[Password Reset Cleanup] Deleted ${result.changes} expired reset code(s)`)
    }
  } catch (error) {
    console.error('[Password Reset Cleanup] Error cleaning expired password reset codes:', error)
  }
}

async function runAllCleanupTasks() {
  console.log('[Cleanup] Starting scheduled cleanup tasks')
  await runSermonCleanup()
  await runSessionCleanup()
  await runRateLimitCleanup()
  await runPasswordResetCleanup()
  console.log('[Cleanup] All cleanup tasks completed')
}

export default defineNitroPlugin((nitroApp) => {
  console.log('[Cleanup Plugin] Initializing scheduled cleanup tasks')

  // Run all cleanup tasks at startup (after a short delay)
  setTimeout(async () => {
    console.log('[Cleanup] Running initial cleanup')
    await runAllCleanupTasks()
  }, 10000) // 10 seconds after startup

  // Schedule cleanup to run daily (every 24 hours) for sermons
  const dailyInterval = 24 * 60 * 60 * 1000 // 24 hours in milliseconds
  setInterval(async () => {
    await runAllCleanupTasks()
  }, dailyInterval)

  // Run session/rate-limit cleanup more frequently (every hour)
  // This prevents these tables from growing too large
  const hourlyInterval = 60 * 60 * 1000 // 1 hour in milliseconds
  setInterval(async () => {
    console.log('[Cleanup] Running hourly cleanup')
    await runSessionCleanup()
    await runRateLimitCleanup()
    await runPasswordResetCleanup()
  }, hourlyInterval)
})