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, postCount] = await Promise.all([
      MercuryDataSource.getRepository(Blog).countBy({
        host: IsNull(),
      }),
      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;