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import { Router } from "express";
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import { callback2 } from "@cocalc/util/async-utils";
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import { database_is_working } from "@cocalc/server/metrics/hub_register";
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import { database } from "../database";
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export default function init(router: Router) {
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  // Return global status information about CoCalc
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  router.get("/stats", async (_req, res) => {
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    if (!database_is_working()) {
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      res.json({ error: "not connected to database" });
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      return;
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    }
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    res.header("Cache-Control", "no-cache, no-store");
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    try {
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      const stats = await callback2(database.get_stats, {
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        update: false, // never update in hub b/c too slow. instead, run $ hub --update_stats via a cronjob every minute
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        ttl: 30,
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      });
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      res.header("Content-Type", "application/json");
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      res.send(JSON.stringify(stats, null, 1));
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    } catch (err) {
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      res.status(500).send(`internal error: ${err}`);
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    }
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  });
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}
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