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// This file is part of Locus <https://github.com/gemrest/locus>.
// Copyright (C) 2022-2022 Fuwn <[email protected]>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (C) 2022-2022 Fuwn <[email protected]>
// SPDX-License-Identifier: GPL-3.0-only

use once_cell::sync::Lazy;
use tokio::time::Instant;

static UPTIME: Lazy<Instant> = Lazy::new(Instant::now);

pub fn module(router: &mut windmark::Router) {
  UPTIME.elapsed();

  crate::route::track_mount(
    router,
    "/uptime",
    "The uptime of Locus (A.K.A., The Locus Epoch). (\\?[s|ms|mu|ns]?)?",
    Box::new(move |context| {
      let response = windmark::utilities::queries_from_url(context.url)
        .get("unit")
        .map_or_else(
          || UPTIME.elapsed().as_nanos().to_string(),
          |query| {
            match query.as_str() {
              "secs" | "seconds" | "s" =>
                UPTIME.elapsed().as_secs().to_string(),
              "milli" | "milliseconds" | "ms" =>
                UPTIME.elapsed().as_millis().to_string(),
              "micro" | "microseconds" | "mu" =>
                UPTIME.elapsed().as_micros().to_string(),
              _ => UPTIME.elapsed().as_nanos().to_string(),
            }
          },
        );

      crate::route::cache(&context, &response);

      windmark::Response::success(response)
    }),
  );
}