Data-Visualization/atlas_frontend.html at main · Student-Chapter-CSE/Data-Visualization · 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>Cognitive Atlas</title>
    <script type="text/javascript" src="https://unpkg.com/vis-network/standalone/umd/vis-network.min.js"></script>
    <style>
        body, html {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            background-color: #111;
            color: #eee;
            overflow: hidden;
        }
        #mynetwork {
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
        }
        .title-overlay {
            position: absolute;
            top: 20px;
            left: 20px;
            z-index: 10;
            background-color: rgba(0, 0, 0, 0.5);
            padding: 10px 20px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        h1 {
            margin: 0;
            font-size: 1.8em;
            font-weight: 300;
        }
        .loading {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 1.5em;
            z-index: 10;
        }
    </style>
</head>
<body>

    <div class="title-overlay">
        <h1>🌌 Cognitive Atlas</h1>
    </div>

    <div id="mynetwork"></div>
    <div id="loading" class="loading">Loading Knowledge Galaxy...</div>

    <script type="text/javascript">
        async function drawGraph() {
            const container = document.getElementById('mynetwork');
            const loadingIndicator = document.getElementById('loading');

            try {
                // Fetch data from our FastAPI backend
                const response = await fetch('/api/graph-data');
                const graphData = await response.json();

                if (!graphData.nodes || graphData.nodes.length === 0) {
                    loadingIndicator.innerText = "No data to display. Add some entries!";
                    return;
                }

                const data = {
                    nodes: new vis.DataSet(graphData.nodes),
                    edges: new vis.DataSet(graphData.edges)
                };

                const options = {
                    nodes: {
                        shape: 'dot',
                        font: {
                            size: 14,
                            color: '#ffffff'
                        },
                        borderWidth: 2
                    },
                    edges: {
                        width: 0.5,
                        color: { inherit: 'from' },
                        smooth: {
                            type: 'continuous'
                        }
                    },
                    physics: {
                        solver: 'forceAtlas2Based',
                        forceAtlas2Based: {
                            gravitationalConstant: -50,
                            centralGravity: 0.01,
                            springLength: 100,
                            springConstant: 0.08
                        }
                    },
                    interaction: {
                        hover: true,
                        tooltipDelay: 200
                    }
                };

                loadingIndicator.style.display = 'none';
                const network = new vis.Network(container, data, options);

            } catch (error) {
                loadingIndicator.innerText = "Failed to load graph data. Is the server running?";
                console.error("Error fetching or drawing graph:", error);
            }
        }

        // Draw the graph when the page loads
        window.addEventListener('load', drawGraph);
    </script>

</body>
</html>