/**
 * POST /api/instances/:id/connect
 * Connect an instance (generates QR code)
 */
import { query } from '../../../utils/database'
import { baileysManager } from '../../../services/baileys/manager'

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; status: string }>(
    'SELECT id, status FROM instances WHERE id = $1',
    [id]
  )

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

  const instance = result.rows[0]

  // Don't connect if already connected
  if (instance.status === 'connected') {
    throw createError({ statusCode: 400, message: 'Instance already connected' })
  }

  // Start connection
  try {
    await baileysManager.connect(id!)

    // Wait a bit for QR to generate
    await new Promise(resolve => setTimeout(resolve, 2000))

    const qrCode = baileysManager.getQRCode(id!)
    const status = baileysManager.getStatus(id!)

    return {
      success: true,
      status: status?.status || 'connecting',
      qrCode
    }
  } catch (error) {
    throw createError({
      statusCode: 500,
      message: `Failed to connect: ${(error as Error).message}`
    })
  }
})