<script src="../../../resources/js-test-pre.js"></script>
<script src="../resources/media-controls-loader.js" type="text/javascript"></script>
<script src="../resources/media-controls-utils.js" type="text/javascript"></script>
<body>
<style type="text/css" media="screen">
    
    video, #host {
        position: absolute;
        top: 0;
        left: 0;
        width: 800px;
        height: 240px;
    }
    
</style>
<video src="../../content/test.mp4" autoplay controls></video>
<div id="host"></div>
<script type="text/javascript">

window.jsTestIsAsync = true;

description("Testing that dragging the volume slider to 0 turns the mute button on and that pressing the mute button resets the volume to the previous value.");

const container = document.querySelector("div#host");
const media = document.querySelector("video");
const mediaController = createControls(container, media, null);

const muteButton = mediaController.controls.muteButton.element;
const volumeSlider = mediaController.controls.volumeSlider.children[1].element;

function runTest()
{
    media.removeEventListener("play", runTest);
    media.pause();

    shouldBe("media.volume", "1");
    shouldBe("mediaController.controls.volumeSlider.value", "1");

    media.volume = 0.5;
    shouldBecomeEqual("media.volume", "0.5", () => {
        shouldBecomeDifferent("muteButton.getBoundingClientRect().width", "0", () => {
            const muteButtonBounds = muteButton.getBoundingClientRect();
            // Controls are now visible, let's hover over the mute button to make the volume control visible.
            eventSender.mouseMoveTo(muteButtonBounds.left + muteButtonBounds.width / 2, muteButtonBounds.top + muteButtonBounds.height / 2);
            shouldBecomeDifferent("volumeSlider.getBoundingClientRect().width", "0", () => {
                dragVolumeSlider(0.5, 0);
                shouldBecomeEqual("media.muted", "true", () => {
                    debug("");
                    debug("We click on the mute button which should set the volume back to 0.5");
                    pressOnElement(muteButton);
                    shouldBecomeEqual("media.volume", "0.5", () => {
                        shouldBeFalse("media.muted");
                        debug("");
                        container.remove();
                        media.remove();
                        finishJSTest();
                    });
                });
            });
        });
    });
}

media.addEventListener("play", runTest);

function dragVolumeSlider(fromVolume, toVolume)
{
    debug("");
    debug(`We drag the volume slider to set the volume from ${fromVolume} to ${toVolume}`);

    const bounds = volumeSlider.getBoundingClientRect();
    const centerX = bounds.left + bounds.width / 2;
    const dragStartY = bounds.top + bounds.height * (1 - fromVolume);
    const dragEndY = bounds.top + bounds.height * (1 - toVolume);
    const delta = dragEndY - dragStartY;
    const iterations = Math.abs(delta);

    eventSender.mouseMoveTo(centerX, dragStartY);
    eventSender.mouseDown();
    for (let i = 1; i <= iterations; ++i)
        eventSender.mouseMoveTo(dragVolumeSlider, dragStartY + i * Math.sign(delta));
    eventSender.mouseUp();
}

</script>
<script src="../../../resources/js-test-post.js"></script>
</body>