<!DOCTYPE html>
<html>
<head>
    <title>media-mp4-h264-partial-abort</title>
    <script src="media-source-loader.js"></script>
    <script src="../video-test.js"></script>
    <script>
    var loader;
    var source;
    var sourceBuffer;
    var random;

    function loaderPromise(loader) {
        return new Promise((resolve, reject) => {
            loader.onload = resolve;
            loader.onerror = reject;
        });
    }

    function randomNumber(min, max) {
        return Math.floor(Math.random() * (max - min) + min);
    }

    window.addEventListener('load', async event => {
        try {
            findMediaElement();
            loader = new MediaSourceLoader('content/test-fragmented-video-manifest.json');
            await loaderPromise(loader);

            source = new MediaSource();
            run('video.src = URL.createObjectURL(source)');
            await waitFor(source, 'sourceopen');
            waitFor(video, 'error').then(failTest);

            consoleWrite('Append the init segment in two chunks');
            run('sourceBuffer = source.addSourceBuffer(loader.type())');
            consoleWrite('Divide the init segment in two.');
            run('random = randomNumber(1, 720)');
            run('partial1 = loader.initSegment().slice(0, random)');
            run('partial2 = loader.initSegment().slice(random)');
            let firstSegment = true;
            run('sourceBuffer.appendBuffer(partial1)');
            waitFor(video, 'loadedmetadata').then(() => {
                if (firstSegment)
                    failtest('loadedmetada can only be fired once the whole init segment has been appended');
            });
            await waitFor(sourceBuffer, 'update');
            firstSegment = false;
            run('sourceBuffer.appendBuffer(partial2)');
            await waitFor(sourceBuffer, 'update');

            consoleWrite('Append the two partial media segments in reverse order. Separated with an abort');
            run('sourceBuffer.appendBuffer(loader.mediaSegment(3).slice(0, 45000))');
            await waitFor(sourceBuffer, 'update');
            run('sourceBuffer.abort()');
            testExpected('sourceBuffer.buffered.length', '1');
            testExpected('sourceBuffer.buffered.end(0)', '3.541', '>=');
            run('sourceBuffer.appendBuffer(loader.mediaSegment(0).slice(0, 45000))');
            await waitFor(sourceBuffer, 'update');
            testExpected('sourceBuffer.buffered.length', '2');
            testExpected('sourceBuffer.buffered.end(0)', '0.708', '>=');
            testExpected('sourceBuffer.buffered.end(1)', '3.541', '>=');

            consoleWrite('Clean sourcebuffer of all content.');
            consoleWrite('Ensure an init segment is accepted right after an aborted partial media segment');
            run('sourceBuffer.abort()');
            run('sourceBuffer.remove(0, 100)');
            await waitFor(sourceBuffer, 'update');
            run('sourceBuffer.appendBuffer(loader.mediaSegment(3).slice(0, 45000))');
            await waitFor(sourceBuffer, 'update');
            run('sourceBuffer.abort()');
            testExpected('sourceBuffer.buffered.length', '1');
            testExpected('sourceBuffer.buffered.end(0)', '3.541', '>=');
            run('sourceBuffer.appendBuffer(loader.initSegment())');
            await waitFor(sourceBuffer, 'update');
            run('sourceBuffer.appendBuffer(loader.mediaSegment(0).slice(0, 45000))');
            await waitFor(sourceBuffer, 'update');
            testExpected('sourceBuffer.buffered.length', '2');
            testExpected('sourceBuffer.buffered.end(0)', '0.708', '>=');
            testExpected('sourceBuffer.buffered.end(1)', '3.541', '>=');

            consoleWrite('Same as above without waiting for the first append to complete. This is not a deterministic speced behaviour');
            consoleWrite('Clean sourcebuffer of all content.');
            run('sourceBuffer.abort()');
            run('sourceBuffer.remove(0, 100)');
            await waitFor(sourceBuffer, 'update');
            run('sourceBuffer.appendBuffer(loader.mediaSegment(3).slice(0, 45000))');
            run('sourceBuffer.abort()');
            run('sourceBuffer.appendBuffer(loader.initSegment())');
            await waitFor(sourceBuffer, 'update');
            run('sourceBuffer.appendBuffer(loader.mediaSegment(0).slice(0, 45000))');
            await waitFor(sourceBuffer, 'update');
            testExpected('sourceBuffer.buffered.length', '1');
            testExpected('sourceBuffer.buffered.end(0)', '0.708', '>=');

            endTest();
        } catch (e) {
            failTest(`Caught exception: "${e}"`);
        }
    });
    </script>
</head>
<body>
    <video controls></video>
</body>
</html>