<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml' lang='' xml:lang=''>

<head>
    <meta charset='utf-8' />
    <meta name='viewport' content='width=device-width, user-scalable=no' />
    <title>$PANDEMONIUM_PROJECT_NAME</title>
    <style type='text/css'>
        body {
            touch-action: none;
            margin: 0;
            border: 0 none;
            padding: 0;
            text-align: center;
            background-color: black;
        }

        #canvas {
            display: block;
            margin: 0;
            color: white;
        }

        #canvas:focus {
            outline: none;
        }

        .pandemonium {
            font-family: 'Noto Sans', 'Droid Sans', Arial, sans-serif;
            color: #e0e0e0;
            background-color: #3b3943;
            background-image: linear-gradient(to bottom, #403e48, #35333c);
            border: 1px solid #45434e;
            box-shadow: 0 0 1px 1px #2f2d35;
        }


        /* Status display
		 * ============== */

        #status {
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            bottom: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            /* don't consume click events - make children visible explicitly */
            visibility: hidden;
        }

        #status-progress {
            width: 366px;
            height: 7px;
            background-color: #38363A;
            border: 1px solid #444246;
            padding: 1px;
            box-shadow: 0 0 2px 1px #1B1C22;
            border-radius: 2px;
            visibility: visible;
        }

        @media only screen and (orientation:portrait) {
            #status-progress {
                width: 61.8%;
            }
        }

        #status-progress-inner {
            height: 100%;
            width: 0;
            box-sizing: border-box;
            transition: width 0.5s linear;
            background-color: #202020;
            border: 1px solid #222223;
            box-shadow: 0 0 1px 1px #27282E;
            border-radius: 3px;
        }

        #status-indeterminate {
            height: 42px;
            visibility: visible;
            position: relative;
        }

        #status-indeterminate>div {
            width: 4.5px;
            height: 0;
            border-style: solid;
            border-width: 9px 3px 0 3px;
            border-color: #2b2b2b transparent transparent transparent;
            transform-origin: center 21px;
            position: absolute;
        }

        #status-indeterminate>div:nth-child(1) {
            transform: rotate(22.5deg);
        }

        #status-indeterminate>div:nth-child(2) {
            transform: rotate(67.5deg);
        }

        #status-indeterminate>div:nth-child(3) {
            transform: rotate(112.5deg);
        }

        #status-indeterminate>div:nth-child(4) {
            transform: rotate(157.5deg);
        }

        #status-indeterminate>div:nth-child(5) {
            transform: rotate(202.5deg);
        }

        #status-indeterminate>div:nth-child(6) {
            transform: rotate(247.5deg);
        }

        #status-indeterminate>div:nth-child(7) {
            transform: rotate(292.5deg);
        }

        #status-indeterminate>div:nth-child(8) {
            transform: rotate(337.5deg);
        }

        #status-notice {
            margin: 0 100px;
            line-height: 1.3;
            visibility: visible;
            padding: 4px 6px;
            visibility: visible;
        }
    </style>
    $PANDEMONIUM_HEAD_INCLUDE
</head>

<body>
    <canvas id='canvas'>
        HTML5 canvas appears to be unsupported in the current browser.<br />
        Please try updating or use a different browser.
    </canvas>
    <div id='status'>
        <div id='status-progress' style='display: none;' oncontextmenu='event.preventDefault();'>
            <div id='status-progress-inner'></div>
        </div>
        <div id='status-indeterminate' style='display: none;' oncontextmenu='event.preventDefault();'>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
        </div>
        <div id='status-notice' class='pandemonium' style='display: none;'></div>
    </div>

    <script type='text/javascript' src='$PANDEMONIUM_URL'></script>
    <script type='text/javascript'>
        //<![CDATA[

        const PANDEMONIUM_CONFIG = $PANDEMONIUM_CONFIG;
        var engine = new Engine(PANDEMONIUM_CONFIG);

        (function() {
            const INDETERMINATE_STATUS_STEP_MS = 100;
            var statusProgress = document.getElementById('status-progress');
            var statusProgressInner = document.getElementById('status-progress-inner');
            var statusIndeterminate = document.getElementById('status-indeterminate');
            var statusNotice = document.getElementById('status-notice');

            var initializing = true;
            var statusMode = 'hidden';

            var animationCallbacks = [];

            function animate(time) {
                animationCallbacks.forEach(callback => callback(time));
                requestAnimationFrame(animate);
            }
            requestAnimationFrame(animate);

            function setStatusMode(mode) {

                if (statusMode === mode || !initializing)
                    return;
                [statusProgress, statusIndeterminate, statusNotice].forEach(elem => {
                    elem.style.display = 'none';
                });
                animationCallbacks = animationCallbacks.filter(function(value) {
                    return (value != animateStatusIndeterminate);
                });
                switch (mode) {
                    case 'progress':
                        statusProgress.style.display = 'block';
                        break;
                    case 'indeterminate':
                        statusIndeterminate.style.display = 'block';
                        animationCallbacks.push(animateStatusIndeterminate);
                        break;
                    case 'notice':
                        statusNotice.style.display = 'block';
                        break;
                    case 'hidden':
                        break;
                    default:
                        throw new Error('Invalid status mode');
                }
                statusMode = mode;
            }

            function animateStatusIndeterminate(ms) {
                var i = Math.floor(ms / INDETERMINATE_STATUS_STEP_MS % 8);
                if (statusIndeterminate.children[i].style.borderTopColor == '') {
                    Array.prototype.slice.call(statusIndeterminate.children).forEach(child => {
                        child.style.borderTopColor = '';
                    });
                    statusIndeterminate.children[i].style.borderTopColor = '#dfdfdf';
                }
            }

            function setStatusNotice(text) {
                while (statusNotice.lastChild) {
                    statusNotice.removeChild(statusNotice.lastChild);
                }
                var lines = text.split('\n');
                lines.forEach((line) => {
                    statusNotice.appendChild(document.createTextNode(line));
                    statusNotice.appendChild(document.createElement('br'));
                });
            };

            function displayFailureNotice(err) {
                var msg = err.message || err;
                console.error(msg);
                setStatusNotice(msg);
                setStatusMode('notice');
                initializing = false;
            };

            if (!Engine.isWebGLAvailable()) {
                displayFailureNotice('WebGL not available');
            } else {
                setStatusMode('indeterminate');
                engine.startGame({
                    'onProgress': function(current, total) {
                        if (total > 0) {
                            statusProgressInner.style.width = current / total * 100 + '%';
                            setStatusMode('progress');
                            if (current === total) {
                                // wait for progress bar animation
                                setTimeout(() => {
                                    setStatusMode('indeterminate');
                                }, 500);
                            }
                        } else {
                            setStatusMode('indeterminate');
                        }
                    },
                }).then(() => {
                    setStatusMode('hidden');
                    initializing = false;
                }, displayFailureNotice);
            }
        })();
        //]]>
    </script>
</body>

</html>