import { execSync } from "child_process";
import dotenv from "dotenv";

dotenv.config();

import Express from "express";

const app = Express();
const PORT = process.env.PORT;

const base64 = Buffer.from(
  `${process.env.GITLAB_USER}:${process.env.PASS}`,
).toString("base64");

app.use(Express.static(__dirname + "/out"));

app.post("/", (req, res) => {
  const header = req.header("authorization");

  if (header == null) {
    res.status(403).send("Authorization header is needed");
    return;
  }

  if (header.split(" ").length !== 2) {
    res.status(400).send("Authorization header is malformed");
    return;
  }

  const [type, secret] = header.split(" ");

  if (type !== "Basic") {
    res.status(400).send("Only basic authorization is supported");
    return;
  }

  if (secret !== base64) {
    res.status(401).send("Incorrect username or password");
    return;
  }

  updateWebsite();

  res.send("Updating website ...");
});

app.listen(PORT, () => {
  console.log(`👀 http://localhost:${PORT}`);
});

async function updateWebsite() {
  const branch = "main";
  const job = "staging";
  const url = `https://git.uwaterloo.ca/csc/website/-/jobs/artifacts/${branch}/download?job=${job}`;

  const zipPath = `zips/${branch}.zip`;

  // Wait for pipeline to succeed and artifacts to be available
  await sleep(120);

  execSync(`wget -O ${zipPath} '${url}'`);
  execSync(`yes All | unzip ${zipPath}`);
}

function sleep(seconds: number) {
  return new Promise((resolve) => setTimeout(resolve, seconds * 1000));
}