1 files changed, 101 insertions, 0 deletions
diff --git a/app/api/revalidate/approval/route.ts b/app/api/revalidate/approval/route.ts
new file mode 100644
index 00000000..ed4da139
--- /dev/null
+++ b/app/api/revalidate/approval/route.ts
@@ -0,0 +1,101 @@
+import { revalidateTag } from 'next/cache';
+import { NextRequest, NextResponse } from 'next/server';
+
+/**
+ * 결재 시스템 캐시 무효화 API
+ * 
+ * 백그라운드 프로세스(폴링 서비스)에서 request 컨텍스트 없이
+ * 캐시를 무효화하기 위한 API 라우트
+ * 
+ * 사용법:
+ * await fetch('/api/revalidate/approval', {
+ *   method: 'POST',
+ *   headers: { 'Content-Type': 'application/json' },
+ *   body: JSON.stringify({ tags: ['approval-logs'] })
+ * });
+ */
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json();
+    const { tags, secret } = body;
+
+    // 선택적 보안: 환경 변수로 시크릿 키 검증
+    // 내부 서버에서만 호출되므로 필수는 아님
+    if (process.env.REVALIDATION_SECRET && secret !== process.env.REVALIDATION_SECRET) {
+      return NextResponse.json(
+        { success: false, message: 'Invalid secret' },
+        { status: 401 }
+      );
+    }
+
+    // 캐시 태그 무효화
+    if (Array.isArray(tags)) {
+      for (const tag of tags) {
+        revalidateTag(tag);
+        console.log(`[Cache Revalidation] Tag revalidated: ${tag}`);
+      }
+    } else if (typeof tags === 'string') {
+      revalidateTag(tags);
+      console.log(`[Cache Revalidation] Tag revalidated: ${tags}`);
+    }
+
+    return NextResponse.json({
+      success: true,
+      revalidated: true,
+      tags: Array.isArray(tags) ? tags : [tags],
+      timestamp: new Date().toISOString(),
+    });
+  } catch (error) {
+    console.error('[Cache Revalidation] Error:', error);
+    return NextResponse.json(
+      {
+        success: false,
+        message: error instanceof Error ? error.message : 'Revalidation failed',
+      },
+      { status: 500 }
+    );
+  }
+}
+
+// GET 요청으로도 사용 가능 (개발/테스트용)
+export async function GET(request: NextRequest) {
+  const { searchParams } = new URL(request.url);
+  const tag = searchParams.get('tag');
+  const secret = searchParams.get('secret');
+
+  if (process.env.REVALIDATION_SECRET && secret !== process.env.REVALIDATION_SECRET) {
+    return NextResponse.json(
+      { success: false, message: 'Invalid secret' },
+      { status: 401 }
+    );
+  }
+
+  if (!tag) {
+    return NextResponse.json(
+      { success: false, message: 'Tag parameter is required' },
+      { status: 400 }
+    );
+  }
+
+  try {
+    revalidateTag(tag);
+    console.log(`[Cache Revalidation] Tag revalidated: ${tag}`);
+    
+    return NextResponse.json({
+      success: true,
+      revalidated: true,
+      tag,
+      timestamp: new Date().toISOString(),
+    });
+  } catch (error) {
+    console.error('[Cache Revalidation] Error:', error);
+    return NextResponse.json(
+      {
+        success: false,
+        message: error instanceof Error ? error.message : 'Revalidation failed',
+      },
+      { status: 500 }
+    );
+  }
+}
+