const CC = Components.Constructor;
const BinaryInputStream = CC(
  "@mozilla.org/binaryinputstream;1",
  "nsIBinaryInputStream",
  "setInputStream"
);

function handleRequest(request, response) {
  var query = {};
  request.queryString.split("&").forEach(function (val) {
    var [name, value] = val.split("=");
    query[name] = unescape(value);
  });

  var bodyStream = new BinaryInputStream(request.bodyInputStream);
  var bodyBytes = [];
  while ((bodyAvail = bodyStream.available()) > 0) {
    Array.prototype.push.apply(bodyBytes, bodyStream.readByteArray(bodyAvail));
  }

  var body = decodeURIComponent(
    escape(String.fromCharCode.apply(null, bodyBytes))
  );

  var currentHop = query.hop ? parseInt(query.hop) : 0;

  var obj = JSON.parse(body);
  if (currentHop < obj.hops) {
    var newURL =
      "/tests/dom/serviceworkers/test/redirect_post.sjs?hop=" +
      (1 + currentHop);
    response.setStatusLine(null, 307, "redirect");
    response.setHeader("Location", newURL);
    return;
  }

  response.setHeader("Content-Type", "application/json");
  response.write(body);
}