/**
 * Audit Checklist API Route - Proxy to Backend
 */

import { NextRequest, NextResponse } from 'next/server'

const BACKEND_URL = process.env.BACKEND_URL || 'http://localhost:8000'

export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ sessionId: string }> }
) {
  try {
    const { sessionId } = await params
    const { searchParams } = new URL(request.url)
    const queryParams = new URLSearchParams()

    const page = searchParams.get('page')
    const page_size = searchParams.get('page_size')
    const status_filter = searchParams.get('status_filter')
    const regulation_filter = searchParams.get('regulation_filter')
    const search = searchParams.get('search')

    if (page) queryParams.set('page', page)
    if (page_size) queryParams.set('page_size', page_size)
    if (status_filter) queryParams.set('status_filter', status_filter)
    if (regulation_filter) queryParams.set('regulation_filter', regulation_filter)
    if (search) queryParams.set('search', search)

    const url = `${BACKEND_URL}/api/v1/compliance/audit/checklist/${sessionId}${queryParams.toString() ? `?${queryParams}` : ''}`

    const response = await fetch(url, {
      method: 'GET',
      headers: {
        'Content-Type': 'application/json',
      },
      signal: AbortSignal.timeout(30000)
    })

    if (!response.ok) {
      const errorText = await response.text()
      return NextResponse.json(
        { error: `Backend Error: ${response.status}`, details: errorText },
        { status: response.status }
      )
    }

    const data = await response.json()
    return NextResponse.json(data)
  } catch (error) {
    console.error('Audit checklist proxy error:', error)
    return NextResponse.json(
      { error: 'Verbindung zum Backend fehlgeschlagen' },
      { status: 503 }
    )
  }
}
