From 844a0458adb6fb8ebc638f00243376c0408a96e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B6=8C=ED=98=81=EC=84=B1?= <shine1324@gmail.com>
Date: Fri, 20 Mar 2026 00:36:48 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20R2=20presigned=20URL=20=EC=97=94?=
 =?UTF-8?q?=EB=93=9C=ED=8F=AC=EC=9D=B8=ED=8A=B8=20=EC=B6=94=EA=B0=80?=
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- FileStorageController에 presignedUrl() 메서드 추가 (30분 유효)
- GET /api/v1/files/{id}/presigned-url 라우트 추가
- 파일 프록시 스트리밍 대신 R2 직접 접근 지원

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 .../Api/V1/FileStorageController.php          | 23 +++++++++++++++++++
 routes/api/v1/files.php                       |  1 +
 2 files changed, 24 insertions(+)

diff --git a/app/Http/Controllers/Api/V1/FileStorageController.php b/app/Http/Controllers/Api/V1/FileStorageController.php
index 95e4e4d0..41e6486c 100644
--- a/app/Http/Controllers/Api/V1/FileStorageController.php
+++ b/app/Http/Controllers/Api/V1/FileStorageController.php
@@ -9,6 +9,7 @@
 use App\Http\Requests\Api\V1\ShareLinkRequest;
 use App\Services\FileStorageService;
 use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Storage;
 
 class FileStorageController extends Controller
 {
@@ -122,6 +123,28 @@ public function view(int $id, Request $request)
         return $file->download(inline: true);
     }
 
+    /**
+     * R2 Presigned URL 발급 (30분 유효)
+     */
+    public function presignedUrl(int $id, Request $request)
+    {
+        $this->ensureContext($request);
+
+        $service = new FileStorageService;
+        $file = $service->getFile($id);
+
+        if (! $file->file_path || ! Storage::disk('r2')->exists($file->file_path)) {
+            abort(404, 'File not found in storage');
+        }
+
+        $url = Storage::disk('r2')->temporaryUrl(
+            $file->file_path,
+            now()->addMinutes(30)
+        );
+
+        return ApiResponse::handle(fn () => ['url' => $url]);
+    }
+
     /**
      * Soft delete file
      */
diff --git a/routes/api/v1/files.php b/routes/api/v1/files.php
index 4f48bc91..bed1b821 100644
--- a/routes/api/v1/files.php
+++ b/routes/api/v1/files.php
@@ -22,6 +22,7 @@
     Route::get('/{id}', [FileStorageController::class, 'show'])->name('v1.files.show');                                  // 파일 상세
     Route::get('/{id}/download', [FileStorageController::class, 'download'])->name('v1.files.download');                // 파일 다운로드
     Route::get('/{id}/view', [FileStorageController::class, 'view'])->name('v1.files.view');                              // 파일 인라인 보기 (이미지/PDF)
+    Route::get('/{id}/presigned-url', [FileStorageController::class, 'presignedUrl'])->name('v1.files.presigned-url');  // R2 Presigned URL 발급
     Route::delete('/{id}', [FileStorageController::class, 'destroy'])->name('v1.files.destroy');                        // 파일 삭제 (soft)
     Route::post('/{id}/restore', [FileStorageController::class, 'restore'])->name('v1.files.restore');                  // 파일 복구
     Route::delete('/{id}/permanent', [FileStorageController::class, 'permanentDelete'])->name('v1.files.permanent');    // 파일 영구 삭제