import { NextRequest, NextResponse } from "next/server"
import { importService } from "@/lib/vendor-document-list/import-service"
import { getServerSession } from "next-auth"
import { authOptions } from "@/app/api/auth/[...nextauth]/route"
import { debugProcess, debugError, debugSuccess } from "@/lib/debug-utils"

export async function POST(request: NextRequest) {
  try {
    const session = await getServerSession(authOptions)
    if (!session?.user?.id) {
      debugError(`인증 실패`, { userId: session?.user?.id })
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
    }

    const body = await request.json()
    const { projectId, sourceSystem = 'DOLCE' } = body

    if (!projectId) {
      debugError(`필수 파라미터 누락`, { projectId, sourceSystem })
      return NextResponse.json(
        { error: 'Contract ID is required' },
        { status: 400 }
      )
    }

    debugProcess(`DOLCE 가져오기 API 호출`, { 
      projectId, 
      sourceSystem, 
      userId: session.user.id 
    })

    const result = await importService.importFromExternalSystem(
      projectId,
      sourceSystem
    )

    debugSuccess(`DOLCE 가져오기 API 완료`, {
      projectId,
      success: result.success,
      newCount: result.newCount,
      updatedCount: result.updatedCount,
      newAttachmentsCount: result.newAttachmentsCount,
      downloadedFilesCount: result.downloadedFilesCount
    })

    return NextResponse.json(result)
  } catch (error) {
    debugError(`DOLCE 가져오기 API 실패`, { 
      projectId: request.body ? 'unknown' : 'no body',
      error 
    })
    return NextResponse.json(
      {
        error: 'Import failed',
        message: error instanceof Error ? error.message : 'Unknown error'
      },
      { status: 500 }
    )
  }
}