feat: Cloudflare R2 对象存储支持

app/api/file/[...path]/route.ts

@@ -0,0 +1,36 @@
+import { NextRequest, NextResponse } from "next/server";
+import { auth } from "../../auth";
+import S3FileStorage from "../../../utils/r2_file_storage";
+
+async function handle(
+  req: NextRequest,
+  { params }: { params: { path: string[] } },
+) {
+  if (req.method === "OPTIONS") {
+    return NextResponse.json({ body: "OK" }, { status: 200 });
+  }
+
+  const authResult = auth(req);
+  if (authResult.error) {
+    return NextResponse.json(authResult, {
+      status: 401,
+    });
+  }
+
+  try {
+    var file = await S3FileStorage.get(params.path[0]);
+    return new Response(file?.transformToWebStream(), {
+      headers: {
+        "Content-Type": "image/png",
+      },
+    });
+  } catch (e) {
+    return new Response("not found", {
+      status: 404,
+    });
+  }
+}
+
+export const GET = handle;
+
+export const runtime = "edge";