"use strict";

const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");

/*
- get 302 with Cache-control: no-store
- check cache entry for the 302 response is cached only in memory device
- get 302 with Expires: -1
- check cache entry for the 302 response is not cached at all
*/

var httpserver = null;
// Need to randomize, because apparently no one clears our cache
var randomPath1 = "/redirect-no-store/" + Math.random();

XPCOMUtils.defineLazyGetter(this, "randomURI1", function() {
  return "http://localhost:" + httpserver.identity.primaryPort + randomPath1;
});

var randomPath2 = "/redirect-expires-past/" + Math.random();

XPCOMUtils.defineLazyGetter(this, "randomURI2", function() {
  return "http://localhost:" + httpserver.identity.primaryPort + randomPath2;
});

function make_channel(url, callback, ctx) {
  return NetUtil.newChannel({ uri: url, loadUsingSystemPrincipal: true });
}

const responseBody = "response body";

var redirectHandler_NoStore_calls = 0;
function redirectHandler_NoStore(metadata, response) {
  response.setStatusLine(metadata.httpVersion, 302, "Found");
  response.setHeader(
    "Location",
    "http://localhost:" + httpserver.identity.primaryPort + "/content",
    false
  );
  response.setHeader("Cache-control", "no-store");
  ++redirectHandler_NoStore_calls;
}

var redirectHandler_ExpiresInPast_calls = 0;
function redirectHandler_ExpiresInPast(metadata, response) {
  response.setStatusLine(metadata.httpVersion, 302, "Found");
  response.setHeader(
    "Location",
    "http://localhost:" + httpserver.identity.primaryPort + "/content",
    false
  );
  response.setHeader("Expires", "-1");
  ++redirectHandler_ExpiresInPast_calls;
}

function contentHandler(metadata, response) {
  response.setHeader("Content-Type", "text/plain");
  response.bodyOutputStream.write(responseBody, responseBody.length);
}

function check_response(
  path,
  request,
  buffer,
  expectedExpiration,
  continuation
) {
  Assert.equal(buffer, responseBody);

  // Entry is always there, old cache wrapping code does session->SetDoomEntriesIfExpired(false),
  // just check it's not persisted or is expired (dep on the test).
  asyncOpenCacheEntry(
    path,
    "disk",
    Ci.nsICacheStorage.OPEN_READONLY,
    null,
    function(status, entry) {
      Assert.equal(status, 0);

      // Expired entry is on disk, no-store entry is in memory
      Assert.equal(entry.persistent, expectedExpiration);

      // Do the request again and check the server handler is called appropriately
      var chan = make_channel(path);
      chan.asyncOpen(
        new ChannelListener(function(request, buffer) {
          Assert.equal(buffer, responseBody);

          if (expectedExpiration) {
            // Handler had to be called second time
            Assert.equal(redirectHandler_ExpiresInPast_calls, 2);
          } else {
            // Handler had to be called second time (no-store forces validate),
            // and we are just in memory
            Assert.equal(redirectHandler_NoStore_calls, 2);
            Assert.ok(!entry.persistent);
          }

          continuation();
        }, null)
      );
    }
  );
}

function run_test_no_store() {
  var chan = make_channel(randomURI1);
  chan.asyncOpen(
    new ChannelListener(function(request, buffer) {
      // Cache-control: no-store response should only be found in the memory cache.
      check_response(randomURI1, request, buffer, false, run_test_expires_past);
    }, null)
  );
}

function run_test_expires_past() {
  var chan = make_channel(randomURI2);
  chan.asyncOpen(
    new ChannelListener(function(request, buffer) {
      // Expires: -1 response should not be found in any cache.
      check_response(randomURI2, request, buffer, true, finish_test);
    }, null)
  );
}

function finish_test() {
  httpserver.stop(do_test_finished);
}

function run_test() {
  do_get_profile();

  httpserver = new HttpServer();
  httpserver.registerPathHandler(randomPath1, redirectHandler_NoStore);
  httpserver.registerPathHandler(randomPath2, redirectHandler_ExpiresInPast);
  httpserver.registerPathHandler("/content", contentHandler);
  httpserver.start(-1);

  run_test_no_store();
  do_test_pending();
}