/**
 * @file remote-client.js (routes)
 * @description `/api/remote-client` — a LOCAL AgentHub's link to the company
 * hub (server/lib/remote-client.js): whether this machine is enrolled, which
 * Company-account sessions it sent and when, and enroll / log out / send now.
 * Every write is same-origin; the password in `login` goes on to the hub once
 * and is never stored; no answer ever carries the device token. A hub (server
 * mode) has none of this: it answers 404 ENOTLOCAL there.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const express = require("express");
const { sameOriginGuard } = require("../lib/same-origin");
const remote = require("../lib/remote-client");

const router = express.Router();

router.use((req, res, next) =>
  require("../lib/auth").isServerMode()
    ? res
        .status(404)
        .json({ error: { code: "ENOTLOCAL", message: "a hub does not enroll with another hub" } })
    : next()
);

const statusOf = (e) =>
  e.code === "EHUBDOWN"
    ? 503
    : e.code === "ETOOMANY"
      ? 429
      : e.status && e.status >= 400 && e.status < 600
        ? e.status
        : 400;
const send = (res, e) =>
  res.status(statusOf(e)).json({ error: { code: e.code || "EINTERNAL", message: e.message } });

router.get("/", (_req, res) => {
  res.json({ ...remote.status(), uploads: remote.uploads() });
});

router.post("/login", sameOriginGuard, async (req, res) => {
  try {
    const { hub, username, password, deviceName } = req.body || {};
    res.json(await remote.login({ hub, username, password, deviceName }));
  } catch (e) {
    send(res, e);
  }
});

router.post("/logout", sameOriginGuard, async (_req, res) => {
  try {
    res.json(await remote.logout());
  } catch (e) {
    send(res, e);
  }
});

router.post("/upload", sameOriginGuard, async (_req, res) => {
  try {
    if (!remote.status().enrolled) {
      return res
        .status(400)
        .json({ error: { code: "ENOHUB", message: "this machine is not enrolled with a hub" } });
    }
    res.json(await remote.uploadAll());
  } catch (e) {
    send(res, e);
  }
});

module.exports = router;