<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script src="file:///gen/layout_test_data/mojo/public/js/mojo_bindings.js"></script>
<script src="file:///gen/device/vr/public/mojom/vr_service.mojom.js"></script>
<script src="../external/wpt/resources/chromium/webxr-test.js"></script>
<script src="../external/wpt/webxr/resources/webxr_test_constants.js"></script>
<script src="../xr/resources/xr-internal-device-mocking.js"></script>
<script src="../xr/resources/xr-test-utils.js"></script>
<canvas id="webgl-canvas"></canvas>

<script>
let testName = "XRInputSources primary input presses properly fires off the "
  + "right events";

let watcherDone = new Event("watcherdone");

let fakeDeviceInitParams = { supportsImmersive:true };

let requestSessionModes = ['immersive-vr'];

let xrViewerSpace = null;

let testFunction = function(session, t, fakeDeviceController) {
  let eventWatcher = new EventWatcher(
    t, session, ["selectstart", "select", "selectend", "watcherdone"]);
  let eventPromise = eventWatcher.wait_for(
    ["selectstart", "select", "selectend", "watcherdone"]);

  // Need to have a valid pose or input event's don't process.
  fakeDeviceController.setXRPresentationFrameData(VALID_POSE_MATRIX, [{
      eye:"left",
      projectionMatrix: VALID_PROJECTION_MATRIX,
      viewMatrix: VALID_VIEW_MATRIX
    }, {
      eye:"right",
      projectionMatrix: VALID_PROJECTION_MATRIX,
      viewMatrix: VALID_VIEW_MATRIX
    }]);

  function tryCallingFrameMethods(frame) {
    t.step(() => {
      // Frame is active but not an animation frame, so calling getPose is
      // allowed while getViewerPose is not.
      assert_throws('InvalidStateError', () => frame.getViewerPose(currentReferenceSpace));
      let pose = frame.getPose(xrViewerSpace, currentReferenceSpace);
      assert_not_equals(pose, null);
      assert_true(pose instanceof XRPose);
      assert_false(pose instanceof XRViewerPose);
    });
  }

  function onSessionSelectStart(event) {
    t.step( () => {
      let input_sources = session.inputSources;
      assert_equals(event.frame.session, session);
      assert_equals(event.inputSource, input_sources[0]);
      tryCallingFrameMethods(event.frame);
    });
  }

  function onSessionSelectEnd(event) {
    t.step( () => {
      let input_sources = session.inputSources;
      assert_equals(event.frame.session, session);
      assert_equals(event.inputSource, input_sources[0]);
      tryCallingFrameMethods(event.frame);
    });
    session.dispatchEvent(watcherDone);
  }

  function onSessionSelect(event) {
    t.step( () => {
      let input_sources = session.inputSources;
      assert_equals(event.frame.session, session);
      assert_equals(event.inputSource, input_sources[0]);
      tryCallingFrameMethods(event.frame);
    });
  }

  session.addEventListener("selectstart", onSessionSelectStart, false);
  session.addEventListener("selectend", onSessionSelectEnd, false);
  session.addEventListener("select", onSessionSelect, false);

  // Session must have a baseLayer or frame requests will be ignored.
  session.updateRenderState({ baseLayer: new XRWebGLLayer(session, gl) });

  let input_source = new MockXRInputSource();

  fakeDeviceController.addInputSource(input_source);

  let currentReferenceSpace = null;

  session.requestReferenceSpace('viewer').then(function(viewerSpace) {
    xrViewerSpace = viewerSpace;

    session.requestReferenceSpace('local').then((referenceSpace) => {
      currentReferenceSpace = referenceSpace;

      // Press the primary input button and then release it a short time later.
      session.requestAnimationFrame((time, xrFrame) => {
        input_source.primaryInputPressed = true;

          session.requestAnimationFrame((time, xrFrame) => {
            input_source.primaryInputPressed = false;

            session.requestAnimationFrame((time, xrFrame) => {
              // Need to process one more frame to allow select to propegate.
            });
          });
      });
    });
  });

  return eventPromise;
};

xr_session_promise_test(
  testFunction, fakeDeviceInitParams, requestSessionModes, testName);

</script>