import { NextRequest, NextResponse } from 'next/server'
import {
  getApiKeyFromRequest,
  getClientIp,
  logApiCall,
  successResponse,
  validateApiKey,
} from '@/lib/external-api'
import { ExternalMaterialImportError, getExternalMaterialImportSchema } from '@/lib/external-material-import'

function buildErrorResponse(status: number, code: string, message: string) {
  return NextResponse.json(
    {
      success: false,
      error: {
        code,
        message,
      },
    },
    { status },
  )
}

export async function GET(request: NextRequest) {
  const startTime = Date.now()
  const apiKey = getApiKeyFromRequest(request)
  const keyRecord = await validateApiKey(apiKey)

  if (!keyRecord) {
    return buildErrorResponse(401, 'INVALID_API_KEY', 'API Key 无效或缺失')
  }

  const materialType = request.nextUrl.searchParams.get('materialType') || ''

  try {
    const data = await getExternalMaterialImportSchema(materialType)
    await logApiCall({
      apiKeyId: keyRecord.id,
      endpoint: '/api/external/material-import/schema',
      method: 'GET',
      statusCode: 200,
      duration: Date.now() - startTime,
      ipAddress: getClientIp(request),
      userAgent: request.headers.get('user-agent') || undefined,
    })
    return successResponse(data)
  } catch (error) {
    const status = error instanceof ExternalMaterialImportError ? error.status : 500
    const code = error instanceof ExternalMaterialImportError ? error.code : 'SERVER_ERROR'
    const message = error instanceof Error ? error.message : '服务器内部错误'
    await logApiCall({
      apiKeyId: keyRecord.id,
      endpoint: '/api/external/material-import/schema',
      method: 'GET',
      statusCode: status,
      duration: Date.now() - startTime,
      ipAddress: getClientIp(request),
      userAgent: request.headers.get('user-agent') || undefined,
    })
    return buildErrorResponse(status, code, message)
  }
}