import { NextRequest, NextResponse } from 'next/server'
import { authMiddleware } from '@/lib/auth-middleware'

export async function GET(request: NextRequest) {
  try {
    // Check authentication
    const user = await authMiddleware(request)
    if (!user) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
    }

    // Get cluster ID from query parameters
    const { searchParams } = new URL(request.url)
    const clusterId = searchParams.get('cluster_id')

    if (!clusterId) {
      return NextResponse.json({ error: 'Cluster ID is required' }, { status: 400 })
    }

    // Mock Kubernetes configuration
    const kubeConfig = `apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSURCVENDQWUyZ0F3SUJBZ0lJRWRtTFUzZUNCUXN3RFFZSktvWklodmNOQVFFTEJRQXdGVEVUTUJFR0ExVUUKQXhNS2EzVmlaWEp1WlhSbGN6QWVGdzB5TkRBeE1EUXhOekF6TXpCYUZ3MHpOREF4TURFeE56QXpNekJhTUJVeApFekFSQmdOVkJBTVRDbXQxWW1WeWJtVjBaWE13Z2dFaU1BMEdDU3FHU0liM0RRRUJBUVVBQTRJQkR3QXdnZ0VLLQEKQVFJREFRQUI=
    server: https://k8s-api.siliconpin.com:6443
  name: ${clusterId}
contexts:
- context:
    cluster: ${clusterId}
    user: ${clusterId}-admin
  name: ${clusterId}
current-context: ${clusterId}
kind: Config
preferences: {}
users:
- name: ${clusterId}-admin
  user:
    client-certificate-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0t
    client-key-data: LS0tLS1CRUdJTiBSU0EgUFJJVkFURSBLRVktLS0tLQ==`

    // Return the config as a downloadable file
    return new NextResponse(kubeConfig, {
      status: 200,
      headers: {
        'Content-Type': 'application/octet-stream',
        'Content-Disposition': `attachment; filename="kubeconfig-${clusterId}.yaml"`,
        'Cache-Control': 'no-cache',
      },
    })
  } catch (error) {
    console.error('Download error:', error)
    return NextResponse.json({ error: 'Download failed' }, { status: 500 })
  }
}