add basic nodeinfo 2.0

src/routes/nodeinfo/nodeinfo_2.0.ts

@@ -0,0 +1,35 @@
+import { RouteOptions } from "fastify";
+import { IsNull } from "typeorm";
+
+import MercuryDataSource from "~/db/index.js";
+import { Blog } from "~/db/entities/blog.js";
+import { Post } from "~/db/entities/post.js";
+
+const route: RouteOptions = {
+  method: "GET",
+  url: "/nodeinfo/2.0",
+  handler: async (_, res) => {
+    const userCount = await MercuryDataSource.getRepository(Blog).countBy({
+      host: IsNull(),
+    });
+    const postCount = await MercuryDataSource.getRepository(Post).count({
+      relations: { blog: true },
+      where: { blog: { host: IsNull() } },
+    });
+
+    res.send({
+      version: "2.0",
+      software: { name: "mercury", version: "0.1.0-dev" },
+      protocols: ["activitypub"],
+      openRegistrations: false, // TODO: get from database
+      usage: {
+        users: {
+          total: userCount,
+        },
+        localPosts: postCount,
+      },
+    });
+  },
+};
+
+export default route;

src/routes/well-known/nodeinfo.ts

@@ -0,0 +1,20 @@
+import { RouteOptions } from "fastify";
+
+import { BASE_URL } from "~/config.js";
+
+const route: RouteOptions = {
+  method: "GET",
+  url: "/.well-known/nodeinfo",
+  handler: async (_, res) => {
+    res.send({
+      links: [
+        {
+          href: `${BASE_URL}/nodeinfo/2.0`,
+          rel: "http://nodeinfo.diaspora.software/ns/schema/2.0",
+        },
+      ],
+    });
+  },
+};
+
+export default route;