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

const BACKEND_URL = process.env.BACKEND_URL || 'http://backend-compliance:8002'

/**
 * Proxy to backend-compliance /api/modules endpoint.
 * Returns the list of service modules from the database.
 */
export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url)
    const params = new URLSearchParams()

    // Forward filter params
    const serviceType = searchParams.get('service_type')
    const criticality = searchParams.get('criticality')
    const processesPii = searchParams.get('processes_pii')
    const aiComponents = searchParams.get('ai_components')

    if (serviceType) params.set('service_type', serviceType)
    if (criticality) params.set('criticality', criticality)
    if (processesPii) params.set('processes_pii', processesPii)
    if (aiComponents) params.set('ai_components', aiComponents)

    const queryString = params.toString()
    const url = `${BACKEND_URL}/api/compliance/modules${queryString ? `?${queryString}` : ''}`

    const response = await fetch(url, {
      method: 'GET',
      headers: {
        'Content-Type': 'application/json',
        ...(request.headers.get('X-Tenant-ID') && {
          'X-Tenant-ID': request.headers.get('X-Tenant-ID') as string,
        }),
      },
    })

    if (!response.ok) {
      const errorText = await response.text()
      console.error('Backend modules error:', errorText)
      return NextResponse.json(
        { error: 'Backend error', details: errorText },
        { status: response.status }
      )
    }

    const data = await response.json()
    return NextResponse.json(data)
  } catch (error) {
    console.error('Failed to fetch modules from backend:', error)
    return NextResponse.json(
      { error: 'Failed to connect to backend' },
      { status: 503 }
    )
  }
}

/**
 * Proxy: POST /api/sdk/v1/modules → Backend POST /api/modules
 * Creates a new custom module.
 */
export async function POST(request: NextRequest) {
  try {
    const body = await request.json()

    const response = await fetch(`${BACKEND_URL}/api/compliance/modules`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        ...(request.headers.get('X-Tenant-ID') && {
          'X-Tenant-ID': request.headers.get('X-Tenant-ID') as string,
        }),
      },
      body: JSON.stringify(body),
    })

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

    const data = await response.json()
    return NextResponse.json(data)
  } catch (error) {
    console.error('Failed to create module:', error)
    return NextResponse.json(
      { error: 'Failed to connect to backend' },
      { status: 503 }
    )
  }
}