From f967da4ddaa090bb0bc3ce31af19fc66a160433a Mon Sep 17 00:00:00 2001
From: April John <waterdev@galaxycrow.de>
Date: Mon, 4 Sep 2023 17:55:17 +0200
Subject: [PATCH] [AkkomaAPI] Add endpoint /nodeinfo/2.0.json

---
 packages/backend/src/server/index.ts    | 19 ++++++++++++++++++-
 packages/backend/src/server/nodeinfo.ts |  2 +-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/packages/backend/src/server/index.ts b/packages/backend/src/server/index.ts
index efff6dd23..593bf2aba 100644
--- a/packages/backend/src/server/index.ts
+++ b/packages/backend/src/server/index.ts
@@ -24,7 +24,7 @@ import * as Acct from "@/misc/acct.js";
 import { envOption } from "@/env.js";
 import megalodon, { MegalodonInterface } from "megalodon";
 import activityPub from "./activitypub.js";
-import nodeinfo from "./nodeinfo.js";
+import nodeinfo, { nodeinfo2 } from "./nodeinfo.js";
 import wellKnown from "./well-known.js";
 import apiServer from "./api/index.js";
 import fileServer from "./file/index.js";
@@ -34,6 +34,7 @@ import { initializeStreamingServer } from "./api/streaming.js";
 import { koaBody } from "koa-body";
 import removeTrailingSlash from "koa-remove-trailing-slashes";
 import { v4 as uuid } from "uuid";
+import { Cache } from "@/misc/cache.js";
 
 export const serverLogger = new Logger("server", "gray", false);
 
@@ -149,6 +150,22 @@ mastoRouter.get("/oauth/authorize", async (ctx) => {
 	);
 });
 
+const cache = new Cache<Awaited<ReturnType<typeof nodeinfo2>>>(
+	"nodeinfo",
+	60 * 10,
+);
+
+
+mastoRouter.get("/nodeinfo/2.0.json", async (ctx) => {
+	const base = await cache.fetch(null, () => nodeinfo2());
+
+	// @ts-ignore
+	base.software.repository = undefined;
+
+	ctx.body = { version: "2.0", ...base };
+	ctx.set("Cache-Control", "public, max-age=600");
+});
+
 mastoRouter.post("/oauth/token", async (ctx) => {
 	const body: any = ctx.request.body || ctx.request.query;
 	console.log("token-request", body);
diff --git a/packages/backend/src/server/nodeinfo.ts b/packages/backend/src/server/nodeinfo.ts
index 0a042f365..9cf3ab636 100644
--- a/packages/backend/src/server/nodeinfo.ts
+++ b/packages/backend/src/server/nodeinfo.ts
@@ -23,7 +23,7 @@ export const links = [
 	},
 ];
 
-const nodeinfo2 = async () => {
+export const nodeinfo2 = async () => {
 	const now = Date.now();
 	const [meta, total, activeHalfyear, activeMonth, localPosts] =
 		await Promise.all([