feat(knowledge): add service library

frontend/athena/app/api/knowledge/[...path]/route.ts

@@ -0,0 +1,51 @@
+import { NextRequest } from "next/server";
+
+import { assertSameOrigin } from "@/lib/server/request-guards";
+import { proxyHermesRequest, proxyHermesStreamRequest } from "@/lib/server/hermes-proxy";
+
+type Params = {
+  params: Promise<{
+    path: string[];
+  }>;
+};
+
+async function knowledgePath(request: NextRequest, context: Params) {
+  const { path } = await context.params;
+  return `/knowledge/${path.join("/")}${request.nextUrl.search}`;
+}
+
+function isDownloadPath(path: string) {
+  return /\/documents\/\d+\/download(?:\?|$)/.test(path);
+}
+
+export async function GET(request: NextRequest, context: Params) {
+  const path = await knowledgePath(request, context);
+  if (isDownloadPath(path)) {
+    return proxyHermesStreamRequest(request, path);
+  }
+  return proxyHermesRequest(request, path);
+}
+
+export async function POST(request: NextRequest, context: Params) {
+  const originError = assertSameOrigin(request);
+  if (originError) {
+    return originError;
+  }
+  return proxyHermesRequest(request, await knowledgePath(request, context));
+}
+
+export async function PUT(request: NextRequest, context: Params) {
+  const originError = assertSameOrigin(request);
+  if (originError) {
+    return originError;
+  }
+  return proxyHermesRequest(request, await knowledgePath(request, context));
+}
+
+export async function DELETE(request: NextRequest, context: Params) {
+  const originError = assertSameOrigin(request);
+  if (originError) {
+    return originError;
+  }
+  return proxyHermesRequest(request, await knowledgePath(request, context));
+}