/**
 * DELETE /api/instances/:id
 * Delete an instance
 */
import { query } from '../../../utils/database'
import { baileysManager } from '../../../services/baileys/manager'
import { clearAuthState } from '../../../services/baileys/auth-state'

export default defineEventHandler(async (event) => {
  const username = getHeader(event, 'x-authentik-username')
  if (!username) {
    throw createError({ statusCode: 401, message: 'Unauthorized' })
  }

  const id = getRouterParam(event, 'id')

  // Check if instance exists
  const result = await query<{ id: string }>(
    'SELECT id FROM instances WHERE id = $1',
    [id]
  )

  if (result.rows.length === 0) {
    throw createError({ statusCode: 404, message: 'Instance not found' })
  }

  // Disconnect if connected
  try {
    await baileysManager.disconnect(id!)
  } catch (error) {
    // Ignore disconnect errors
  }

  // Clear auth state
  await clearAuthState(id!)

  // Delete from database (cascades to related tables)
  await query('DELETE FROM instances WHERE id = $1', [id])

  return { success: true }
})