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/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */

// The timer never fires if it's not declared and set to this variable outside
// handleRequest, as if it's getting GC'ed when handleRequest's scope goes away.
// Shouldn't the timer thread hold a strong reference to it?
var timer;

function handleRequest(req, resp) {
  resp.processAsync();
  resp.setHeader("Cache-Control", "no-cache, no-store", false);
  resp.setHeader("Content-Type", "text/html;charset=utf-8", false);

  let opts = {};
  try {
    opts = JSON.parse(decodeURIComponent(req.queryString));
  } catch (err) {}

  let setCookieScript = "";
  if (opts.setRedCookie) {
    resp.setHeader("Set-Cookie", "red", false);
    setCookieScript = '<script>document.cookie="red";</script>';
  }

  if (opts.setGreenCookie) {
    resp.setHeader("Set-Cookie", "green", false);
    setCookieScript = '<script>document.cookie="green";</script>';
  }

  if (opts.iframe) {
    setCookieScript += '<iframe src="' + opts.iframe + '" />';
  }

  if (opts.xhr) {
    setCookieScript += `
      <script>
         var req = new XMLHttpRequest();
         req.open("GET", "${opts.xhr}", true);
         req.send();
      </script>
    `;
  }

  if (
    req.hasHeader("Cookie") &&
    req.getHeader("Cookie").split(";").includes("red")
  ) {
    resp.write(
      '<html style="background: #f00;">' + setCookieScript + "</html>"
    );
    resp.finish();
    return;
  }

  if (
    req.hasHeader("Cookie") &&
    req.getHeader("Cookie").split(";").includes("green")
  ) {
    resp.write(
      '<html style="background: #0f0;">' + setCookieScript + "</html>"
    );
    resp.finish();
    return;
  }

  if (opts.redirect) {
    resp.setHeader("Location", opts.redirect);
    resp.setStatusLine(null, 303, null);
    resp.finish();
    return;
  }

  if (opts.wait) {
    resp.write("Waiting " + opts.wait + " ms... ");
    timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
    timer.init(
      function ding() {
        resp.write("OK!");
        resp.finish();
      },
      opts.wait,
      Ci.nsITimer.TYPE_ONE_SHOT
    );
    return;
  }

  resp.write(
    "<pre>" + JSON.stringify(opts, undefined, 2) + "</pre>" + setCookieScript
  );
  resp.finish();
}