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/*
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 *  This file is part of CoCalc: Copyright © 2020 Sagemath, Inc.
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 *  License: MS-RSL – see LICENSE.md for details
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 */
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/*
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Server directory listing through the HTTP server and Websocket API.
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{files:[..., {size:?,name:?,mtime:?,isdir:?}]}
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where mtime is integer SECONDS since epoch, size is in bytes, and isdir
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is only there if true.
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Obviously we should probably use POST instead of GET, due to the
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result being a function of time... but POST is so complicated.
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Use ?random= or ?time= if you're worried about cacheing.
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Browser client code only uses this through the websocket anyways.
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*/
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import { Router } from "express";
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import getListing from "@cocalc/backend/get-listing";
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export default function init(): Router {
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  const base = "/.smc/directory_listing/";
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  const router = Router();
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  router.get(base + "*", async (req, res) => {
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    // decodeURIComponent because decodeURI(misc.encode_path('asdf/te #1/')) != 'asdf/te #1/'
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    // https://github.com/sagemathinc/cocalc/issues/2400
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    const path = decodeURIComponent(req.path.slice(base.length).trim());
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    const { hidden } = req.query;
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    // Fast -- do directly in this process.
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    try {
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      const files = await getListing(path, !!hidden);
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      res.json({ files });
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    } catch (err) {
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      res.json({ error: `${err}` });
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    }
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  });
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  return router;
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}
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