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path: root/app/api/projects/cover-template/upload/route.ts
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// app/api/projects/cover-template/upload/route.ts
import db from "@/db/db"
import { projectCoverTemplates } from "@/db/schema"
import { saveFile } from "@/lib/file-stroage"
import { eq, and } from "drizzle-orm"
import { NextRequest, NextResponse } from "next/server"
import { revalidateTag } from "next/cache"
import { getServerSession } from 'next-auth';
import { authOptions } from '@/app/api/auth/[...nextauth]/route';

export async function POST(request: NextRequest) {
  try {

    const session = await getServerSession(authOptions);
    if (!session?.user?.id) {
      return NextResponse.json(
        { error: '인증이 필요합니다' },
        { status: 401 }
      );
    }

    const formData = await request.formData()
    const file = formData.get("file") as File
    const projectId = formData.get("projectId") as string

    if (!file) {
      return NextResponse.json(
        { success: false, message: "파일이 없습니다" },
        { status: 400 }
      )
    }

    if (!projectId) {
      return NextResponse.json(
        { success: false, message: "프로젝트 ID가 없습니다" },
        { status: 400 }
      )
    }

    // 파일 확장자 확인
    if (!file.name.endsWith('.docx')) {
      return NextResponse.json(
        { success: false, message: "DOCX 파일만 업로드 가능합니다" },
        { status: 400 }
      )
    }

    // 템플릿 디렉토리
    const templateDirectory = `projects/${projectId}/cover-templates`

    // 파일 저장
    const saveResult = await saveFile({
      file,
      directory: templateDirectory,
      originalName: file.name,
    })

    if (!saveResult.success) {
      return NextResponse.json(
        { success: false, message: saveResult.error || "파일 저장 실패" },
        { status: 500 }
      )
    }

    // 기존 활성 템플릿 비활성화
    await db
      .update(projectCoverTemplates)
      .set({ 
        isActive: false,
        updatedAt: new Date()
      })
      .where(
        and(
          eq(projectCoverTemplates.projectId, parseInt(projectId)),
          eq(projectCoverTemplates.isActive, true)
        )
      )

    // 기본 템플릿 변수 설정
    const defaultVariables = {
      docNumber: "{{docNumber}}",
      projectNumber: "{{projectNumber}}",
      projectName: "{{projectName}}"
    }

    // 새 템플릿을 DB에 저장
    const [newTemplate] = await db
      .insert(projectCoverTemplates)
      .values({
        projectId: parseInt(projectId),
        templateName: file.name.replace('.docx', ''),
        originalFileName: file.name,
        filePath: saveResult.publicPath,
        fileSize: saveResult.fileSize,
        variables: defaultVariables,
        isActive: true,
        createdBy: session.user.name, // TODO: 실제 사용자 정보로 변경
        updatedBy: session.user.name,
      })
      .returning()

    console.log(`✅ 커버 템플릿 업로드 완료: ${saveResult.fileName}`)
    console.log(`✅ DB 저장 완료 - Template ID: ${newTemplate.id}`)

    // 캐시 무효화
    revalidateTag("project-cover-lists")

    return NextResponse.json({
      success: true,
      templateId: newTemplate.id,
      filePath: saveResult.publicPath,
      fileName: saveResult.fileName,
      fileSize: saveResult.fileSize,
      variables: defaultVariables,
    })

  } catch (error) {
    console.error("❌ 템플릿 업로드 오류:", error)
    return NextResponse.json(
      { 
        success: false, 
        message: error instanceof Error ? error.message : "업로드 중 오류 발생" 
      },
      { status: 500 }
    )
  }
}