EventManager/index.html at master · DavidTbilisi/EventManager · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Dashboard</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.1/normalize.min.css">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>
    <link rel="stylesheet" href="style.css">
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <script type="text/javascript">
        google.charts.load("current", { packages: ["timeline"] });
        google.charts.setOnLoadCallback(drawChart);

        function drawChart() {
            // Check if we have valid data before drawing
            if (!window.timelineData || window.timelineData.length === 0) {
                return;
            }

            const container = document.getElementById('timeline');
            if (!container || container.style.display === 'none') {
                return;
            }

            try {
                const chart = new google.visualization.Timeline(container);
                const dataTable = new google.visualization.DataTable();

                dataTable.addColumn({ type: 'string', id: 'Event' });
                dataTable.addColumn({ type: 'date', id: 'Start' });
                dataTable.addColumn({ type: 'date', id: 'End' });

                // Validate and add rows
                const validData = window.timelineData.filter(row => {
                    return row && row.length === 3 &&
                        typeof row[0] === 'string' &&
                        row[1] instanceof Date && !isNaN(row[1].getTime()) &&
                        row[2] instanceof Date && !isNaN(row[2].getTime());
                });

                if (validData.length === 0) {
                    return;
                }

                dataTable.addRows(validData);

                const options = {
                    timeline: { showRowLabels: true },
                    avoidOverlappingGridLines: false,
                };

                chart.draw(dataTable, options);
            } catch (error) {
                console.warn('Timeline chart error:', error);
                // Hide timeline if there's an error
                container.style.display = 'none';
            }
        }
    </script>
    <script type='module' src="./js/main.js" defer></script>
</head>

<body>


    <div class="container">

        <form id="event-form">
            <label for="event-name">Event Name</label>
            <input type="text" id="event-name" name="event-name" required>
            <label for="event-start-time">Event Start Time</label>
            <input type="datetime-local" id="event-start-time" name="event-start-time" required>
            <label for="event-end-time">Event End Time</label>
            <input type="datetime-local" id="event-end-time" name="event-end-time">
            <input type="submit" value="Add event"></input>
        </form>

        <ul id="events">
            <!-- Events will be populated dynamically -->
        </ul>

        <div id="timeline" style="min-height: 500px"></div>
    </div>


</body>

</html>