파일 및 썸네일 다운로드 Endpoint의 핸들러를 하나로 통합

src/routes/api/upload/[id]/chunks/[index]/+server.ts

@@ -1,6 +1,8 @@
 import { error, text } from "@sveltejs/kit";
 import { Readable } from "stream";
+import { ReadableStream } from "stream/web";
 import { z } from "zod";
+import { parseContentDigestHeader } from "$lib/modules/http";
 import { authorize } from "$lib/server/modules/auth";
 import { uploadChunk } from "$lib/server/services/upload";
 import type { RequestHandler } from "./$types";
@@ -15,29 +17,21 @@ export const POST: RequestHandler = async ({ locals, params, request }) => {
     })
     .safeParse(params);
   if (!zodRes.success) error(400, "Invalid path parameters");
-  const { id: uploadId, index: chunkIndex } = zodRes.data;
+  const { id: sessionId, index: chunkIndex } = zodRes.data;
 
-  // Parse Content-Digest header (RFC 9530)
-  // Expected format: sha-256=:base64hash:
-  const contentDigest = request.headers.get("Content-Digest");
-  if (!contentDigest) error(400, "Missing Content-Digest header");
-
-  const digestMatch = contentDigest.match(/^sha-256=:([A-Za-z0-9+/=]+):$/);
-  if (!digestMatch || !digestMatch[1])
-    error(400, "Invalid Content-Digest format, must be sha-256=:base64:");
-  const encChunkHash = digestMatch[1];
-
-  const contentType = request.headers.get("Content-Type");
-  if (contentType !== "application/octet-stream" || !request.body) {
+  const encContentHash = parseContentDigestHeader(request.headers.get("Content-Digest"));
+  if (!encContentHash) {
+    error(400, "Invalid request headers");
+  } else if (!request.body) {
     error(400, "Invalid request body");
   }
 
-  // Convert web ReadableStream to Node Readable
-  const nodeReadable = Readable.fromWeb(
-    request.body as unknown as Parameters<typeof Readable.fromWeb>[0],
+  await uploadChunk(
+    userId,
+    sessionId,
+    chunkIndex,
+    Readable.fromWeb(request.body as ReadableStream),
+    encContentHash,
   );
-
-  await uploadChunk(userId, uploadId, chunkIndex, nodeReadable, encChunkHash);
-
   return text("Chunk uploaded", { headers: { "Content-Type": "text/plain" } });
 };