<!DOCTYPE html>
<html>
  <head>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
    <script src="support/test_utils.sub.js"></script>
  </head>

  <body>
    <script>
      /** @property{Datatype} The storage datatype. */
      var storage = TestUtils.DATATYPES.filter(function(datatype) {
        return datatype.name == "storage";
      })[0];

      var serviceWorkerTestPageIFrame;
      function fetchFromIFrame() {
        return serviceWorkerTestPageIFrame.contentWindow
          .fetch('controlled-endpoint.py')
          .then((result) => {
            return result.text();
          });
      }

      // The tests are set up asynchronously.
      setup({"explicit_done": true});

      // There must be at least one test added synchronously, otherwise
      // testharness will complain.
      // TODO(@msramek): Find a way to avoid this dummy test.
      test(function() {}, "Populate backends.");

      TestUtils.populateStorage()
          .then(() => {
            return new Promise(function(resolve, reject) {
              promise_test(function(t) {
                return navigator.serviceWorker.getRegistration("support/").then(function(reg) {
                  return wait_for_state(t, reg.installing || reg.waiting || reg.active, 'activated');
                }).then(resolve, reject);
              });
            });
          })
          .then(() => {
            return new Promise(function (resolve) {
              // Create iFrame in the service worker's scope. This page will make a request
              // for another page that is only served by the service worker
              serviceWorkerTestPageIFrame = document.createElement("iframe");
              serviceWorkerTestPageIFrame.src = "support/page_using_service_worker.html";
              serviceWorkerTestPageIFrame.onload = function() { resolve(); };
              document.body.appendChild(serviceWorkerTestPageIFrame);
            });
          })
          .then(() => {
            const serviceWorkerResponseBody = fetchFromIFrame();

            promise_test(function() {
              return serviceWorkerResponseBody.then(function(body) {
                assert_equals(body, "FROM_SERVICE_WORKER", "Response should be from service worker");
              });
            }, "Baseline: Service worker responds to request");

            return serviceWorkerResponseBody;
          })
          .then(function() {
            const waitForControllerChange = new Promise(function(resolve) {
              serviceWorkerTestPageIFrame.contentWindow
                .navigator.serviceWorker.addEventListener("controllerchange", resolve);
            });
            // Navigate to a resource with a Clear-Site-Data header in
            // an iframe, then verify that all backends of the "storage"
            // datatype have been deleted.
            return new Promise(function(resolve, reject) {
              window.addEventListener("message", resolve);
              var iframe = document.createElement("iframe");
              iframe.src = TestUtils.getClearSiteDataUrl([storage]);
              document.body.appendChild(iframe);
            }).then(function() {
              TestUtils.STORAGE.forEach(function(backend) {
                var test_name =
                    "Clear backend when 'storage' is deleted: " + backend.name;

                promise_test(function() {
                  return backend.isEmpty().then(function(isEmpty) {
                    assert_true(
                      isEmpty,
                      backend.name + " should have been cleared.");
                  });
                }, test_name);
              });

              promise_test(function() {
                return fetchFromIFrame().then(function(body) {
                  assert_equals(body, "FROM_NETWORK", "Response should be from network and not from the service worker");
                });
              }, "Service worker no longer responds to requests");

              promise_test(function() {
                return waitForControllerChange.then(function() {
                  assert_false(!!serviceWorkerTestPageIFrame.contentWindow.navigator.serviceWorker.controller,
                    "Client should not have a controller");
                });
              }, "controllerchange event fires and client no longer has controller");

              done();
            });
          });
    </script>
  </body>
</html>
