/**
 * Evidence Upload API Route - Proxy to Backend
 */

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

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

export async function POST(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url)
    const queryParams = new URLSearchParams()

    const control_id = searchParams.get('control_id')
    const evidence_type = searchParams.get('evidence_type')
    const title = searchParams.get('title')
    const description = searchParams.get('description')

    if (control_id) queryParams.set('control_id', control_id)
    if (evidence_type) queryParams.set('evidence_type', evidence_type)
    if (title) queryParams.set('title', title)
    if (description) queryParams.set('description', description)

    // Forward the FormData directly
    const formData = await request.formData()

    const response = await fetch(
      `${BACKEND_URL}/api/v1/compliance/evidence/upload?${queryParams}`,
      {
        method: 'POST',
        body: formData,
        signal: AbortSignal.timeout(60000) // 60 seconds for file upload
      }
    )

    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('Evidence upload proxy error:', error)
    return NextResponse.json(
      { error: 'Verbindung zum Backend fehlgeschlagen' },
      { status: 503 }
    )
  }
}