417 lines
No EOL
21 KiB
Python
417 lines
No EOL
21 KiB
Python
"""
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Main demo page resource for the OpenEventDatabase.
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"""
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import falcon
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from oedb.utils.logging import logger
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class DemoMainResource:
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"""
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Resource for the main demo page.
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Handles the /demo endpoint.
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"""
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def on_get(self, req, resp):
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"""
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Handle GET requests to the /demo endpoint.
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Returns an HTML page with a MapLibre map showing current events.
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Args:
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req: The request object.
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resp: The response object.
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"""
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logger.info("Processing GET request to /demo")
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try:
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# Set content type to HTML
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resp.content_type = 'text/html'
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# Create HTML response with MapLibre map
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html = """
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>OpenEventDatabase Demo</title>
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<script src="https://unpkg.com/maplibre-gl@3.0.0/dist/maplibre-gl.js"></script>
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<link href="https://unpkg.com/maplibre-gl@3.0.0/dist/maplibre-gl.css" rel="stylesheet" />
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.4/css/bulma.min.css">
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<script defer src="https://use.fontawesome.com/releases/v5.15.4/js/all.js"></script>
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<style>
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body { margin: 0; padding: 0; font-family: Arial, sans-serif; }
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#map { position: absolute; top: 0; bottom: 0; width: 100%; }
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.map-overlay {
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position: absolute;
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top: 10px;
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left: 10px;
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background: rgba(255, 255, 255, 0.9);
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padding: 10px;
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border-radius: 5px;
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box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
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max-width: 300px;
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}
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.map-style-control {
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position: absolute;
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top: 10px;
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right: 10px;
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background: rgba(255, 255, 255, 0.9);
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padding: 10px;
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border-radius: 5px;
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box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
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z-index: 1;
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}
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.map-style-control button {
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display: block;
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margin-bottom: 5px;
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padding: 5px 10px;
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background: #fff;
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border: 1px solid #ddd;
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border-radius: 3px;
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cursor: pointer;
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width: 100%;
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text-align: left;
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}
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.map-style-control button:hover {
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background: #f5f5f5;
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}
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.map-style-control button.active {
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background: #0078ff;
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color: white;
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border-color: #0056b3;
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}
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h2 { margin-top: 0; }
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ul { padding-left: 20px; }
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a { color: #0078ff; text-decoration: none; }
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a:hover { text-decoration: underline; }
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.event-popup { max-width: 300px; }
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</style>
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</head>
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<body>
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<div id="map"></div>
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<div class="map-overlay">
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<h2>OpenEventDatabase Demo</h2>
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<p>This map shows current events from the OpenEventDatabase.</p>
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<h3>API Endpoints:</h3>
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<ul>
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<li><a href="/" target="_blank">/ - API Information</a></li>
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<li><a href="/event" target="_blank">/event - Get Events</a></li>
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<li><a href="/stats" target="_blank">/stats - Database Statistics</a></li>
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</ul>
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<h3>Demo Pages:</h3>
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<ul>
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<li><a href="/demo/search" target="_blank">/demo/search - Advanced Search</a></li>
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<li><a href="/demo/by-what" target="_blank">/demo/by-what - Events by Type</a></li>
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<li><a href="/demo/map-by-what" target="_blank">/demo/map-by-what - Map by Event Type</a></li>
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<li><a href="/demo/traffic" target="_blank">/demo/traffic - Report Traffic Jam</a></li>
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<li><a href="/demo/view-events" target="_blank">/demo/view-events - View Saved Events</a></li>
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<li><a href="/event?what=music" target="_blank">Search Music Events</a></li>
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<li><a href="/event?what=sport" target="_blank">Search Sport Events</a></li>
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</ul>
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<p><a href="/demo/add" class="add-event-btn" style="display: block; text-align: center; margin-top: 15px; padding: 8px; background-color: #0078ff; color: white; border-radius: 4px; font-weight: bold;">+ Add New Event</a></p>
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<p style="text-align: center; margin-top: 10px;">
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<a href="https://source.cipherbliss.com/tykayn/oedb-backend" target="_blank" title="View Source Code on Cipherbliss" style="font-size: 24px;">
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<i class="fas fa-code-branch"></i>
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</a>
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</p>
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</div>
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<div class="map-style-control">
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<h4 style="margin-top: 0; margin-bottom: 10px;">Map Style</h4>
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<button id="style-default" class="active">Default</button>
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<button id="style-osm-vector">OSM Vector</button>
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<button id="style-osm-raster">OSM Raster</button>
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</div>
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<script>
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// Map style URLs
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const mapStyles = {
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default: 'https://demotiles.maplibre.org/style.json',
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osmVector: 'https://cdn.jsdelivr.net/gh/openmaptiles/osm-bright-gl-style@master/style-cdn.json',
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osmRaster: {
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version: 8,
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sources: {
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'osm-raster': {
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type: 'raster',
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tiles: [
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'https://tile.openstreetmap.org/{z}/{x}/{y}.png'
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],
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tileSize: 256,
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attribution: '© <a href="https://www.openstreetmap.org/copyright" target="_blank">OpenStreetMap</a> contributors'
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}
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},
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layers: [
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{
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id: 'osm-raster-layer',
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type: 'raster',
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source: 'osm-raster',
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minzoom: 0,
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maxzoom: 19
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}
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]
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}
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};
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// Initialize the map with default style
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const map = new maplibregl.Map({
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container: 'map',
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style: mapStyles.default,
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center: [2.3522, 48.8566], // Default center (Paris)
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zoom: 4
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});
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// Add navigation controls
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map.addControl(new maplibregl.NavigationControl());
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// Add attribution control with OpenStreetMap attribution
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map.addControl(new maplibregl.AttributionControl({
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customAttribution: '© <a href="https://www.openstreetmap.org/copyright" target="_blank">OpenStreetMap</a> contributors'
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}));
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// Style switcher functionality
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let currentStyle = 'default';
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let eventsData = null;
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document.getElementById('style-default').addEventListener('click', () => {
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if (currentStyle !== 'default') {
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switchMapStyle('default');
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}
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});
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document.getElementById('style-osm-vector').addEventListener('click', () => {
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if (currentStyle !== 'osmVector') {
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switchMapStyle('osmVector');
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}
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});
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document.getElementById('style-osm-raster').addEventListener('click', () => {
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if (currentStyle !== 'osmRaster') {
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switchMapStyle('osmRaster');
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}
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});
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function switchMapStyle(styleName) {
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// Update active button
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document.querySelectorAll('.map-style-control button').forEach(button => {
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button.classList.remove('active');
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});
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document.getElementById(`style-${styleName.replace('osm', 'osm-')}`).classList.add('active');
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// Save current center and zoom
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const center = map.getCenter();
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const zoom = map.getZoom();
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// Save events data if already loaded
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if (map.getSource('events')) {
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try {
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eventsData = map.getSource('events')._data;
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} catch (e) {
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console.error('Error saving events data:', e);
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}
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}
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// Apply new style
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map.setStyle(mapStyles[styleName]);
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// Restore center and zoom after style is loaded
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map.once('style.load', () => {
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map.setCenter(center);
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map.setZoom(zoom);
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// Restore events data if available
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if (eventsData) {
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addEventsToMap(eventsData);
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} else {
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fetchEvents();
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}
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});
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currentStyle = styleName;
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}
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// Fetch events when the map is loaded
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map.on('load', function() {
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fetchEvents();
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});
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// Function to fetch events from the API
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function fetchEvents() {
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// Fetch events from the API - using default behavior to get currently active events
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fetch('/event')
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.then(response => response.json())
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.then(data => {
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if (data.features && data.features.length > 0) {
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// Add events to the map
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addEventsToMap(data);
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// Fit map to events bounds
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fitMapToBounds(data);
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} else {
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console.log('No events found');
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}
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})
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.catch(error => {
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console.error('Error fetching events:', error);
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});
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}
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// Function to add events to the map
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function addEventsToMap(geojson) {
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// Add a GeoJSON source for events
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map.addSource('events', {
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type: 'geojson',
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data: geojson
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});
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// Add a circle layer for events
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map.addLayer({
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id: 'events-circle',
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type: 'circle',
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source: 'events',
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paint: {
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'circle-radius': 8,
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'circle-color': '#FF5722',
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'circle-stroke-width': 2,
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'circle-stroke-color': '#FFFFFF'
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}
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});
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// Add popups for events
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geojson.features.forEach(feature => {
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const coordinates = feature.geometry.coordinates.slice();
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const properties = feature.properties;
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// Create popup content
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let popupContent = '<div class="event-popup">';
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popupContent += `<h3>${properties.label || 'Event'}</h3>`;
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// Display all properties
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popupContent += '<div style="max-height: 300px; overflow-y: auto;">';
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popupContent += '<table style="width: 100%; border-collapse: collapse;">';
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// Sort properties alphabetically for better organization
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const sortedKeys = Object.keys(properties).sort();
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for (const key of sortedKeys) {
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// Skip the label as it's already displayed as the title
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if (key === 'label') continue;
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const value = properties[key];
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let displayValue;
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// Format the value based on its type
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if (value === null || value === undefined) {
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displayValue = '<em>null</em>';
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} else if (typeof value === 'object') {
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displayValue = `<pre style="margin: 0; white-space: pre-wrap;">${JSON.stringify(value, null, 2)}</pre>`;
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} else if (typeof value === 'string' && value.startsWith('http')) {
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displayValue = `<a href="${value}" target="_blank">${value}</a>`;
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} else {
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displayValue = String(value);
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}
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popupContent += `
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<tr style="border-bottom: 1px solid #eee;">
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<td style="padding: 4px; font-weight: bold; vertical-align: top;">${key}:</td>
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<td style="padding: 4px;">${displayValue}</td>
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</tr>`;
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}
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popupContent += '</table>';
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popupContent += '</div>';
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// Add edit link
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popupContent += `<div style="margin-top: 10px; text-align: center;">
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<a href="/demo/edit/${properties.id}" class="edit-event-btn" style="display: inline-block; padding: 5px 10px; background-color: #0078ff; color: white; border-radius: 4px; text-decoration: none; font-weight: bold;">Edit Event</a>
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</div>`;
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popupContent += '</div>';
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// Create popup
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const popup = new maplibregl.Popup({
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closeButton: true,
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closeOnClick: true
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}).setHTML(popupContent);
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// Get event type for icon selection
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const eventType = properties.what || 'unknown';
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// Define icon based on event type
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let iconClass = 'info-circle'; // Default icon
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let iconColor = '#0078ff'; // Default color
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// Map event types to icons
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if (eventType.startsWith('weather')) {
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iconClass = 'cloud';
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iconColor = '#00d1b2'; // Teal
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} else if (eventType.startsWith('traffic')) {
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iconClass = 'car';
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iconColor = '#ff3860'; // Red
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} else if (eventType.startsWith('sport')) {
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iconClass = 'futbol';
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iconColor = '#3273dc'; // Blue
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} else if (eventType.startsWith('culture')) {
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iconClass = 'theater-masks';
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iconColor = '#ffdd57'; // Yellow
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} else if (eventType.startsWith('health')) {
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iconClass = 'heartbeat';
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iconColor = '#ff3860'; // Red
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} else if (eventType.startsWith('education')) {
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iconClass = 'graduation-cap';
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iconColor = '#3273dc'; // Blue
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} else if (eventType.startsWith('politics')) {
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iconClass = 'landmark';
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iconColor = '#209cee'; // Light blue
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} else if (eventType.startsWith('nature')) {
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iconClass = 'leaf';
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iconColor = '#23d160'; // Green
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}
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// Create custom HTML element for marker
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const el = document.createElement('div');
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el.className = 'marker';
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el.innerHTML = `<span class="icon" style="background-color: white; border-radius: 50%; padding: 8px; box-shadow: 0 0 5px rgba(0,0,0,0.3);">
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<i class="fas fa-${iconClass}" style="color: ${iconColor}; font-size: 16px;"></i>
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</span>`;
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// Add marker with popup
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new maplibregl.Marker(el)
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.setLngLat(coordinates)
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.setPopup(popup)
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.addTo(map);
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});
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}
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// Function to fit map to events bounds
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function fitMapToBounds(geojson) {
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if (geojson.features.length === 0) return;
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// Create a bounds object
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const bounds = new maplibregl.LngLatBounds();
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// Extend bounds with each feature
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geojson.features.forEach(feature => {
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bounds.extend(feature.geometry.coordinates);
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});
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// Fit map to bounds with padding
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map.fitBounds(bounds, {
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padding: 50,
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maxZoom: 12
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});
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}
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</script>
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</body>
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</html>
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"""
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# Set the response body and status
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resp.text = html
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resp.status = falcon.HTTP_200
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logger.success("Successfully processed GET request to /demo")
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except Exception as e:
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logger.error(f"Error processing GET request to /demo: {e}")
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resp.status = falcon.HTTP_500
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resp.text = f"Error: {str(e)}"
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# Create a global instance of DemoMainResource
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demo_main = DemoMainResource() |