// Import Three.js modules
import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

// Import our modular components
import { WebSocketManager } from './modules/websocket.js?v=2';
import { AircraftManager } from './modules/aircraft-manager.js?v=2';
import { MapManager } from './modules/map-manager.js?v=2';
import { UIManager } from './modules/ui-manager.js?v=2';
import { CallsignManager } from './modules/callsign-manager.js';
import { escapeHtml } from './modules/html-utils.js';

// Tile Management for 3D Map Base
class TileManager {
    constructor(scene, origin) {
        this.scene = scene;
        this.origin = origin;
        this.loadedTiles = new Map();
        this.zoom = 12; // OSM zoom level
        
        // Calculate tile bounds around origin
        this.originTileX = this.lonToTileX(origin.longitude, this.zoom);
        this.originTileY = this.latToTileY(origin.latitude, this.zoom);
        
        // Calculate actual tile size based on Web Mercator projection at this latitude
        this.tileSize = this.calculateTileSize(origin.latitude, this.zoom);
    }
    
    // Calculate the ground size of a tile at given latitude and zoom
    calculateTileSize(latitude, zoom) {
        // Earth's circumference at equator in km
        const earthCircumference = 40075.016686;
        // Circumference at given latitude
        const latCircumference = earthCircumference * Math.cos(latitude * Math.PI / 180);
        // Size of one tile at this latitude and zoom level
        return latCircumference / Math.pow(2, zoom);
    }
    
    // Convert longitude to OSM tile X coordinate
    lonToTileX(lon, zoom) {
        return Math.floor((lon + 180) / 360 * Math.pow(2, zoom));
    }
    
    // Convert latitude to OSM tile Y coordinate  
    latToTileY(lat, zoom) {
        return Math.floor((1 - Math.log(Math.tan(lat * Math.PI / 180) + 1 / Math.cos(lat * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, zoom));
    }
    
    // Convert tile coordinates to world position relative to origin
    tileToWorldPosition(tileX, tileY) {
        // Use precise positioning based on actual Web Mercator coordinates
        const originLon = this.tileXToLon(this.originTileX, this.zoom);
        const originLat = this.tileYToLat(this.originTileY, this.zoom);
        const tileLon = this.tileXToLon(tileX, this.zoom);
        const tileLat = this.tileYToLat(tileY, this.zoom);
        
        // Convert to world coordinates using precise geographic distance
        const deltaX = (tileLon - originLon) * 111320 * Math.cos(this.origin.latitude * Math.PI / 180) / 1000;
        const deltaZ = -(tileLat - originLat) * 111320 / 1000; // Negative for Three.js coordinates
        
        return { x: deltaX, z: deltaZ };
    }
    
    // Convert OSM tile X to longitude
    tileXToLon(x, zoom) {
        return x / Math.pow(2, zoom) * 360 - 180;
    }
    
    // Convert OSM tile Y to latitude
    tileYToLat(y, zoom) {
        const n = Math.PI - 2 * Math.PI * y / Math.pow(2, zoom);
        return 180 / Math.PI * Math.atan(0.5 * (Math.exp(n) - Math.exp(-n)));
    }
    
    async loadTile(tileX, tileY) {
        const key = `${tileX}_${tileY}`;
        if (this.loadedTiles.has(key)) return;
        
        try {
            // OpenStreetMap tile server
            const url = `https://tile.openstreetmap.org/${this.zoom}/${tileX}/${tileY}.png`;
            
            const texture = await new THREE.TextureLoader().loadAsync(url);
            // Use ClampToEdgeWrapping to prevent gaps and improve alignment
            texture.wrapS = texture.wrapT = THREE.ClampToEdgeWrapping;
            texture.magFilter = THREE.LinearFilter;
            texture.minFilter = THREE.LinearFilter;
            
            // Create tile geometry with exact size for precise alignment
            const geometry = new THREE.PlaneGeometry(this.tileSize, this.tileSize);
            const material = new THREE.MeshBasicMaterial({ 
                map: texture,
                transparent: false, // Remove transparency to avoid visual artifacts
                side: THREE.FrontSide
            });
            
            const tile = new THREE.Mesh(geometry, material);
            tile.rotation.x = -Math.PI / 2; // Lay flat on ground
            
            // Position tile relative to origin with precise positioning
            const worldPos = this.tileToWorldPosition(tileX, tileY);
            tile.position.set(worldPos.x, 0.01, worldPos.z); // Slightly above ground (1cm)
            
            this.scene.add(tile);
            this.loadedTiles.set(key, tile);
            
            if (window.skyviewVerbose) {
                console.log(`Loaded tile ${tileX},${tileY} at position ${worldPos.x},${worldPos.z}`);
            }
            
        } catch (error) {
            console.warn(`Failed to load tile ${tileX},${tileY}:`, error);
        }
    }
    
    async loadInitialTiles() {
        // Load a larger grid of tiles around the origin for better coverage
        const tileRange = 3; // Load 3 tiles in each direction (7x7 = ~70km x 70km)
        
        // Load center tiles first, then expand outward for better user experience
        const loadOrder = [];
        for (let distance = 0; distance <= tileRange; distance++) {
            for (let x = -distance; x <= distance; x++) {
                for (let y = -distance; y <= distance; y++) {
                    if (Math.abs(x) === distance || Math.abs(y) === distance) {
                        loadOrder.push({ x, y });
                    }
                }
            }
        }
        
        // Load tiles with small delays to avoid overwhelming the server
        for (const { x, y } of loadOrder) {
            const tileX = this.originTileX + x;
            const tileY = this.originTileY + y;
            await this.loadTile(tileX, tileY);
            
            // Small delay to prevent rate limiting
            if (loadOrder.length > 10) {
                await new Promise(resolve => setTimeout(resolve, 50));
            }
        }
        
        // Add origin indicator
        this.addOriginIndicator();
    }
    
    addOriginIndicator() {
        // Create a visible marker at the origin point
        const originGeometry = new THREE.CylinderGeometry(0.5, 0.5, 2, 8);
        const originMaterial = new THREE.MeshLambertMaterial({ 
            color: 0xff0000,
            emissive: 0x440000
        });
        const originMarker = new THREE.Mesh(originGeometry, originMaterial);
        originMarker.position.set(0, 1, 0); // Position at origin, 1km above ground
        this.scene.add(originMarker);
        
        // Add ring indicator on ground
        const ringGeometry = new THREE.RingGeometry(2, 3, 16);
        const ringMaterial = new THREE.MeshBasicMaterial({ 
            color: 0xff0000, 
            side: THREE.DoubleSide,
            transparent: true,
            opacity: 0.7
        });
        const originRing = new THREE.Mesh(ringGeometry, ringMaterial);
        originRing.rotation.x = -Math.PI / 2; // Lay flat on ground
        originRing.position.set(0, 0.1, 0); // Slightly above ground to prevent z-fighting
        this.scene.add(originRing);
        
        if (window.skyviewVerbose) {
            console.log('Added origin indicator at (0, 0, 0)');
        }
    }
    
    // Cleanup method for removing tiles
    removeTile(tileX, tileY) {
        const key = `${tileX}_${tileY}`;
        const tile = this.loadedTiles.get(key);
        if (tile) {
            this.scene.remove(tile);
            tile.geometry.dispose();
            tile.material.map?.dispose();
            tile.material.dispose();
            this.loadedTiles.delete(key);
        }
    }
}

class SkyView {
    constructor() {
        // Initialize managers
        this.wsManager = null;
        this.aircraftManager = null;
        this.mapManager = null;
        this.uiManager = null;
        this.callsignManager = null;
        
        // 3D Radar
        this.radar3d = null;
        
        // Charts
        this.charts = {};
        
        // Selected aircraft tracking
        this.selectedAircraft = null;
        this.selectedTrailEnabled = false;
        
        // Debug/verbose logging control
        // Enable verbose logging with: ?verbose in URL or localStorage.setItem('skyview-verbose', 'true')
        const urlParams = new URLSearchParams(window.location.search);
        this.verbose = urlParams.has('verbose') || localStorage.getItem('skyview-verbose') === 'true';
        
        // Set global verbose flag for other modules
        window.skyviewVerbose = this.verbose;
        
        this.init();
    }

    async init() {
        try {
            
            // Initialize UI manager first
            this.uiManager = new UIManager();
            this.uiManager.initializeViews();
            this.uiManager.initializeEventListeners();
            
            // Initialize callsign manager for enriched callsign display
            this.callsignManager = new CallsignManager();
            
            // Initialize map manager and get the main map
            this.mapManager = new MapManager();
            const map = await this.mapManager.initializeMap();
            
            // Initialize aircraft manager with the map and callsign manager
            this.aircraftManager = new AircraftManager(map, this.callsignManager);
            
            // Set up selected aircraft trail callback
            this.aircraftManager.setSelectedAircraftCallback((icao) => {
                return this.selectedTrailEnabled && this.selectedAircraft === icao;
            });
            
            // Initialize WebSocket with callbacks
            this.wsManager = new WebSocketManager(
                (message) => this.handleWebSocketMessage(message),
                (status) => this.uiManager.updateConnectionStatus(status)
            );
            
            await this.wsManager.connect();
            
            // Initialize other components
            this.initializeCharts();
            this.uiManager.updateClocks();
            
            // Flag to track 3D radar initialization
            this.radar3dInitialized = false;
            
            // Add view change listener for 3D radar initialization
            this.setupViewChangeListener();
            
            // Set up map controls
            this.setupMapControls();
            
            // Set up aircraft selection listener
            this.setupAircraftSelection();
            
            this.startPeriodicTasks();
            
        } catch (error) {
            console.error('Initialization failed:', error);
            this.uiManager.showError('Failed to initialize application');
        }
    }

    setupMapControls() {
        const centerMapBtn = document.getElementById('center-map');
        const resetMapBtn = document.getElementById('reset-map');
        const toggleTrailsBtn = document.getElementById('toggle-trails');
        const toggleSourcesBtn = document.getElementById('toggle-sources');
        
        if (centerMapBtn) {
            centerMapBtn.addEventListener('click', () => {
                this.aircraftManager.centerMapOnAircraft(() => this.mapManager.getSourcePositions());
            });
        }
        
        if (resetMapBtn) {
            resetMapBtn.addEventListener('click', () => this.mapManager.resetMap());
        }
        
        if (toggleTrailsBtn) {
            toggleTrailsBtn.addEventListener('click', () => {
                const showTrails = this.aircraftManager.toggleTrails();
                toggleTrailsBtn.textContent = showTrails ? 'Hide Trails' : 'Show Trails';
            });
        }
        
        
        if (toggleSourcesBtn) {
            toggleSourcesBtn.addEventListener('click', () => {
                const showSources = this.mapManager.toggleSources();
                toggleSourcesBtn.textContent = showSources ? 'Hide Sources' : 'Show Sources';
            });
        }
        
        // Setup collapsible sections
        this.setupCollapsibleSections();
        
        const toggleDarkModeBtn = document.getElementById('toggle-dark-mode');
        if (toggleDarkModeBtn) {
            toggleDarkModeBtn.addEventListener('click', () => {
                const isDarkMode = this.mapManager.toggleDarkMode();
                toggleDarkModeBtn.innerHTML = isDarkMode ? '☀️ Light Mode' : '🌙 Night Mode';
            });
        }
        
        // Coverage controls
        const toggleHeatmapBtn = document.getElementById('toggle-heatmap');
        const coverageSourceSelect = document.getElementById('coverage-source');
        
        if (toggleHeatmapBtn) {
            toggleHeatmapBtn.addEventListener('click', async () => {
                const isActive = await this.mapManager.toggleHeatmap();
                toggleHeatmapBtn.textContent = isActive ? 'Hide Heatmap' : 'Show Heatmap';
            });
        }
        
        if (coverageSourceSelect) {
            coverageSourceSelect.addEventListener('change', (e) => {
                this.mapManager.setSelectedSource(e.target.value);
                this.mapManager.updateCoverageDisplay();
            });
        }
        
        // Display option checkboxes
        const sitePositionsCheckbox = document.getElementById('show-site-positions');
        const rangeRingsCheckbox = document.getElementById('show-range-rings');
        const selectedTrailCheckbox = document.getElementById('show-selected-trail');
        
        if (sitePositionsCheckbox) {
            sitePositionsCheckbox.addEventListener('change', (e) => {
                if (e.target.checked) {
                    this.mapManager.showSources = true;
                    this.mapManager.updateSourceMarkers();
                } else {
                    this.mapManager.showSources = false;
                    this.mapManager.sourceMarkers.forEach(marker => this.mapManager.map.removeLayer(marker));
                    this.mapManager.sourceMarkers.clear();
                }
            });
        }
        
        if (rangeRingsCheckbox) {
            rangeRingsCheckbox.addEventListener('change', (e) => {
                if (e.target.checked) {
                    this.mapManager.showRange = true;
                    this.mapManager.updateRangeCircles();
                } else {
                    this.mapManager.showRange = false;
                    this.mapManager.rangeCircles.forEach(circle => this.mapManager.map.removeLayer(circle));
                    this.mapManager.rangeCircles.clear();
                }
            });
        }
        
        if (selectedTrailCheckbox) {
            selectedTrailCheckbox.addEventListener('change', (e) => {
                this.selectedTrailEnabled = e.target.checked;
                if (!e.target.checked && this.selectedAircraft) {
                    // Hide currently selected aircraft trail
                    this.aircraftManager.hideAircraftTrail(this.selectedAircraft);
                } else if (e.target.checked && this.selectedAircraft) {
                    // Show currently selected aircraft trail
                    this.aircraftManager.showAircraftTrail(this.selectedAircraft);
                }
            });
        }
    }

    setupAircraftSelection() {
        document.addEventListener('aircraftSelected', (e) => {
            const { icao, aircraft } = e.detail;
            this.uiManager.switchView('map-view');
            
            // Hide trail for previously selected aircraft
            if (this.selectedAircraft && this.selectedTrailEnabled) {
                this.aircraftManager.hideAircraftTrail(this.selectedAircraft);
            }
            
            // Update selected aircraft
            this.selectedAircraft = icao;
            
            // Automatically enable selected aircraft trail when an aircraft is selected
            if (!this.selectedTrailEnabled) {
                this.selectedTrailEnabled = true;
                const selectedTrailCheckbox = document.getElementById('show-selected-trail');
                if (selectedTrailCheckbox) {
                    selectedTrailCheckbox.checked = true;
                }
            }
            
            // Show trail for newly selected aircraft
            this.aircraftManager.showAircraftTrail(icao);
            
            // DON'T change map view - just open popup like Leaflet expects
            if (this.mapManager.map && aircraft.Latitude && aircraft.Longitude) {
                const marker = this.aircraftManager.aircraftMarkers.get(icao);
                if (marker) {
                    marker.openPopup();
                }
            }
        });
    }

    handleWebSocketMessage(message) {
        const aircraftCount = Object.keys(message.data.aircraft || {}).length;
        // Only log WebSocket messages in verbose mode
        if (this.verbose) {
            console.debug(`WebSocket message: ${message.type}, ${aircraftCount} aircraft, timestamp: ${message.timestamp}`);
        }
        
        switch (message.type) {
            case 'initial_data':
                console.log(`Received initial data with ${aircraftCount} aircraft`);
                this.updateData(message.data);
                // Setup source markers only on initial data load
                this.mapManager.updateSourceMarkers();
                break;
            case 'aircraft_update':
                this.updateData(message.data);
                break;
            default:
                console.warn(`Unknown WebSocket message type: ${message.type}`);
        }
    }

    updateData(data) {
        // Update all managers with new data - ORDER MATTERS
        // Only log data updates in verbose mode
        if (this.verbose) {
            console.debug(`Updating data: ${Object.keys(data.aircraft || {}).length} aircraft`);
        }
        
        this.uiManager.updateData(data);
        this.aircraftManager.updateAircraftData(data);
        this.mapManager.updateSourcesData(data);
        
        // Update UI components - CRITICAL: updateMarkers must be called for track propagation
        this.aircraftManager.updateMarkers();
        
        // Update map components that depend on aircraft data
        this.mapManager.updateSourceMarkers();
        
        // Update UI tables and statistics
        this.uiManager.updateAircraftTable();
        this.uiManager.updateStatistics();
        this.uiManager.updateHeaderInfo();
        
        // Clear selected aircraft if it no longer exists
        if (this.selectedAircraft && !this.aircraftManager.aircraftData.has(this.selectedAircraft)) {
            console.debug(`Selected aircraft ${this.selectedAircraft} no longer exists, clearing selection`);
            this.selectedAircraft = null;
        }
        
        // Update coverage controls
        this.mapManager.updateCoverageControls();
        
        if (this.uiManager.currentView === 'radar3d-view' && this.radar3dInitialized) {
            this.update3DRadar();
        }
        
        // Only log completion messages in verbose mode
        if (this.verbose) {
            console.debug(`Data update complete: ${this.aircraftManager.aircraftMarkers.size} markers displayed`);
        }
    }

    // View switching
    async switchView(viewId) {
        const actualViewId = this.uiManager.switchView(viewId);
        
        // Handle view-specific initialization
        const baseName = actualViewId.replace('-view', '');
        switch (baseName) {
            case 'coverage':
                await this.mapManager.initializeCoverageMap();
                break;
            case 'radar3d':
                this.update3DRadar();
                break;
        }
    }

    // Charts
    initializeCharts() {
        const aircraftChartCanvas = document.getElementById('aircraft-chart');
        if (!aircraftChartCanvas) {
            console.warn('Aircraft chart canvas not found');
            return;
        }
        
        try {
            this.charts.aircraft = new Chart(aircraftChartCanvas, {
                type: 'line',
                data: {
                    labels: [],
                    datasets: [{
                        label: 'Aircraft Count',
                        data: [],
                        borderColor: '#00d4ff',
                        backgroundColor: 'rgba(0, 212, 255, 0.1)',
                        tension: 0.4
                    }]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    plugins: {
                        legend: { display: false }
                    },
                    scales: {
                        x: { display: false },
                        y: { 
                            beginAtZero: true,
                            ticks: { color: '#888' }
                        }
                    }
                }
            });
        } catch (error) {
            console.warn('Chart.js not available, skipping charts initialization');
        }
    }

    updateCharts() {
        if (!this.charts.aircraft) return;
        
        const now = new Date();
        const timeLabel = now.toLocaleTimeString();
        
        // Update aircraft count chart
        const chart = this.charts.aircraft;
        chart.data.labels.push(timeLabel);
        chart.data.datasets[0].data.push(this.aircraftManager.aircraftData.size);
        
        if (chart.data.labels.length > 20) {
            chart.data.labels.shift();
            chart.data.datasets[0].data.shift();
        }
        
        chart.update('none');
    }

    setupViewChangeListener() {
        // Override the ui manager's switchView to handle 3D radar initialization
        const originalSwitchView = this.uiManager.switchView.bind(this.uiManager);
        
        this.uiManager.switchView = (viewId) => {
            const result = originalSwitchView(viewId);
            
            // Initialize 3D radar when switching to 3D radar view
            if (viewId === 'radar3d-view' && !this.radar3dInitialized) {
                setTimeout(async () => {
                    await this.initialize3DRadar();
                    this.radar3dInitialized = true;
                }, 100); // Small delay to ensure the view is visible
            }
            
            return result;
        };
    }

    // 3D Radar (basic implementation)
    async initialize3DRadar() {
        if (this.verbose) {
            console.log('🚀 Starting 3D radar initialization');
        }
        
        try {
            const container = document.getElementById('radar3d-container');
            if (!container) {
                console.error('❌ Container radar3d-container not found');
                return;
            }
            
            if (this.verbose) {
                console.log('✅ Container found:', container, 'Size:', container.clientWidth, 'x', container.clientHeight);
                
                // Check if container is visible
                const containerStyles = window.getComputedStyle(container);
                console.log('📋 Container styles:', {
                    display: containerStyles.display,
                    visibility: containerStyles.visibility,
                    width: containerStyles.width,
                    height: containerStyles.height
                });
            }
            
            // Check if Three.js is available
            if (typeof THREE === 'undefined') {
                console.error('❌ Three.js is not available');
                return;
            }
            
            if (this.verbose) {
                console.log('✅ Three.js available, version:', THREE.REVISION);
            }
            
            // Quick WebGL test
            const testCanvas = document.createElement('canvas');
            const gl = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
            if (!gl) {
                console.error('❌ WebGL is not supported in this browser');
                container.innerHTML = '<div style="color: red; padding: 20px; text-align: center;">WebGL not supported. Please use a modern browser that supports WebGL.</div>';
                return;
            }
            
            if (this.verbose) {
                console.log('✅ WebGL is supported');
            }
            
            // Check container dimensions first
            if (container.clientWidth === 0 || container.clientHeight === 0) {
                console.error('❌ Container has zero dimensions:', container.clientWidth, 'x', container.clientHeight);
                // Force minimum size for initialization
                const width = Math.max(container.clientWidth, 800);
                const height = Math.max(container.clientHeight, 600);
                if (this.verbose) {
                    console.log('📐 Using forced dimensions:', width, 'x', height);
                }
                
                // Create scene with forced dimensions
                this.radar3d = {
                    scene: new THREE.Scene(),
                    camera: new THREE.PerspectiveCamera(75, width / height, 0.1, 1000),
                    renderer: new THREE.WebGLRenderer({ alpha: true, antialias: true }),
                    controls: null,
                    aircraftMeshes: new Map(),
                    aircraftLabels: new Map(),
                    labelContainer: null,
                    aircraftTrails: new Map(),
                    showTrails: false
                };
                
                // Set up renderer with forced dimensions
                this.radar3d.renderer.setSize(width, height);
            } else {
                // Create scene with actual container dimensions
                this.radar3d = {
                    scene: new THREE.Scene(),
                    camera: new THREE.PerspectiveCamera(75, container.clientWidth / container.clientHeight, 0.1, 1000),
                    renderer: new THREE.WebGLRenderer({ alpha: true, antialias: true }),
                    controls: null,
                    aircraftMeshes: new Map(),
                    aircraftLabels: new Map(),
                    labelContainer: null,
                    aircraftTrails: new Map(),
                    showTrails: false
                };
                
                // Set up renderer
                this.radar3d.renderer.setSize(container.clientWidth, container.clientHeight);
            }
            
            if (this.verbose) {
                console.log('✅ Three.js objects created:', {
                    scene: this.radar3d.scene,
                    camera: this.radar3d.camera,
                    renderer: this.radar3d.renderer
                });
            }
            
            // Check WebGL context
            const rendererGL = this.radar3d.renderer.getContext();
            if (!rendererGL) {
                console.error('❌ Failed to get WebGL context');
                return;
            }
            
            if (this.verbose) {
                console.log('✅ WebGL context created');
            }
            
            this.radar3d.renderer.setClearColor(0x0a0a0a, 0.9);
            container.appendChild(this.radar3d.renderer.domElement);
            
            // Create label container for aircraft labels
            this.radar3d.labelContainer = document.createElement('div');
            this.radar3d.labelContainer.style.position = 'absolute';
            this.radar3d.labelContainer.style.top = '0';
            this.radar3d.labelContainer.style.left = '0';
            this.radar3d.labelContainer.style.width = '100%';
            this.radar3d.labelContainer.style.height = '100%';
            this.radar3d.labelContainer.style.pointerEvents = 'none';
            this.radar3d.labelContainer.style.zIndex = '1000';
            container.appendChild(this.radar3d.labelContainer);
            
            if (this.verbose) {
                console.log('✅ Renderer added to container');
            }
            
            // Add lighting - ensure the scene is visible
            const ambientLight = new THREE.AmbientLight(0x404040, 1.0); // Increased intensity
            this.radar3d.scene.add(ambientLight);
            
            const directionalLight = new THREE.DirectionalLight(0xffffff, 1.0); // Increased intensity
            directionalLight.position.set(10, 50, 25);
            this.radar3d.scene.add(directionalLight);
            
            // Add hemisphere light for better illumination
            const hemiLight = new THREE.HemisphereLight(0x0000ff, 0x00ff00, 0.6);
            hemiLight.position.set(0, 100, 0);
            this.radar3d.scene.add(hemiLight);
            
            // Set up camera with better view of larger map area
            this.radar3d.camera.position.set(0, 80, 80);
            this.radar3d.camera.lookAt(0, 0, 0);
            
            // Add controls
            if (this.verbose) {
                console.log('🎮 Adding OrbitControls...');
            }
            if (typeof OrbitControls === 'undefined') {
                console.error('❌ OrbitControls not available');
                return;
            }
            
            this.radar3d.controls = new OrbitControls(this.radar3d.camera, this.radar3d.renderer.domElement);
            this.radar3d.controls.enableDamping = true;
            this.radar3d.controls.dampingFactor = 0.05;
            
            if (this.verbose) {
                console.log('✅ OrbitControls added');
            }
            
            // Store default camera position for reset functionality
            this.radar3d.defaultPosition = { x: 0, y: 80, z: 80 };
            this.radar3d.defaultTarget = { x: 0, y: 0, z: 0 };
            
            // Auto-rotate state
            this.radar3d.autoRotate = false;
            
            // Origin coordinates (will be fetched from server)
            this.radar3d.origin = { latitude: 59.9081, longitude: 10.8015 }; // fallback
            
            // Initialize raycaster for click interactions
            this.radar3d.raycaster = new THREE.Raycaster();
            this.radar3d.mouse = new THREE.Vector2();
            this.radar3d.selectedAircraft = null;
            
            // Initialize 3D controls and fetch origin
            this.initialize3DControls();
            this.fetch3DOrigin();
            
            // Add click event listener for aircraft selection
            this.radar3d.renderer.domElement.addEventListener('click', (event) => this.handle3DClick(event));
            
            // Initialize map tiles instead of simple ground plane
            this.radar3d.tileManager = new TileManager(this.radar3d.scene, this.radar3d.origin);
            await this.radar3d.tileManager.loadInitialTiles();
            
            if (this.verbose) {
                console.log('3D Radar initialized successfully', {
                    scene: this.radar3d.scene,
                    camera: this.radar3d.camera,
                    renderer: this.radar3d.renderer
                });
            }
            
            // Start render loop
            this.render3DRadar();
            
        } catch (error) {
            console.error('Failed to initialize 3D radar:', error);
        }
    }

    update3DRadar() {
        if (!this.radar3d || !this.radar3d.scene || !this.aircraftManager) return;
        
        try {
            // Origin coordinates for distance calculation
            const originLat = this.radar3d.origin.latitude;
            const originLon = this.radar3d.origin.longitude;
            const currentRange = this.radar3d.range || 100; // Default to 100km if not set
            
            // Update aircraft positions in 3D space
            this.aircraftManager.aircraftData.forEach((aircraft, icao) => {
                if (aircraft.Latitude && aircraft.Longitude) {
                    const key = icao.toString();
                    
                    // Calculate distance from origin to filter by range
                    const distance = this.calculateDistance(
                        originLat, originLon, 
                        aircraft.Latitude, aircraft.Longitude
                    );
                    
                    // Check if aircraft is within range
                    const withinRange = distance <= currentRange;
                    
                    if (!this.radar3d.aircraftMeshes.has(key)) {
                        // Create new aircraft mesh only if within range
                        if (withinRange) {
                            const { geometry, material } = this.create3DAircraftGeometry(aircraft);
                            const mesh = new THREE.Mesh(geometry, material);
                            
                            // Apply signal quality visual effects
                            this.apply3DSignalQualityEffects(mesh, aircraft);
                            
                            this.radar3d.aircraftMeshes.set(key, mesh);
                            this.radar3d.scene.add(mesh);
                            
                            // Create aircraft label
                            this.create3DAircraftLabel(key, aircraft);
                            
                            // Create trail if trails are enabled
                            if (this.radar3d.showTrails) {
                                this.create3DAircraftTrail(key, aircraft);
                            }
                        }
                    } else {
                        // Aircraft mesh exists, check if it should be visible
                        const mesh = this.radar3d.aircraftMeshes.get(key);
                        mesh.visible = withinRange;
                        
                        // Update label visibility
                        const label = this.radar3d.aircraftLabels.get(key);
                        if (label) {
                            label.style.display = withinRange ? 'block' : 'none';
                        }
                    }
                    
                    // Update position if aircraft is within range
                    if (withinRange) {
                        const mesh = this.radar3d.aircraftMeshes.get(key);
                        
                        // Convert lat/lon to local coordinates (simplified)
                        const x = (aircraft.Longitude - originLon) * 111320 * Math.cos(aircraft.Latitude * Math.PI / 180) / 1000;
                        const z = -(aircraft.Latitude - originLat) * 111320 / 1000;
                        const y = (aircraft.Altitude || 0) / 1000; // Convert feet to km for display
                        
                        mesh.position.set(x, y, z);
                        
                        // Update aircraft visual indicators (direction, climb/descent)
                        this.update3DAircraftVisuals(mesh, aircraft);
                        
                        // Update signal quality effects
                        this.apply3DSignalQualityEffects(mesh, aircraft);
                        
                        // Update trail if trails are enabled
                        if (this.radar3d.showTrails && aircraft.position_history) {
                            this.update3DAircraftTrail(key, aircraft);
                        }
                    }
                }
            });
            
            // Remove old aircraft and their labels
            this.radar3d.aircraftMeshes.forEach((mesh, key) => {
                if (!this.aircraftManager.aircraftData.has(key)) {
                    this.radar3d.scene.remove(mesh);
                    this.radar3d.aircraftMeshes.delete(key);
                    
                    // Remove associated label
                    const label = this.radar3d.aircraftLabels.get(key);
                    if (label) {
                        this.radar3d.labelContainer.removeChild(label);
                        this.radar3d.aircraftLabels.delete(key);
                    }
                    
                    // Remove associated trail
                    const trail = this.radar3d.aircraftTrails.get(key);
                    if (trail) {
                        this.radar3d.scene.remove(trail);
                        this.radar3d.aircraftTrails.delete(key);
                    }
                }
            });
        } catch (error) {
            console.error('Failed to update 3D radar:', error);
        }
    }

    render3DRadar() {
        if (!this.radar3d) return;
        
        requestAnimationFrame(() => this.render3DRadar());
        
        if (this.radar3d.controls) {
            this.radar3d.controls.update();
        }
        
        this.radar3d.renderer.render(this.radar3d.scene, this.radar3d.camera);
        
        // Update aircraft labels after rendering
        this.update3DAircraftLabels();
    }
    
    create3DAircraftLabel(icao, aircraft) {
        const label = document.createElement('div');
        label.style.position = 'absolute';
        label.style.background = 'rgba(0, 0, 0, 0.8)';
        label.style.color = 'white';
        label.style.padding = '4px 8px';
        label.style.borderRadius = '4px';
        label.style.fontSize = '12px';
        label.style.fontFamily = 'monospace';
        label.style.whiteSpace = 'nowrap';
        label.style.border = '1px solid rgba(255, 255, 255, 0.3)';
        label.style.pointerEvents = 'auto';
        label.style.cursor = 'pointer';
        label.style.transition = 'opacity 0.3s';
        label.style.zIndex = '1001';
        
        // Create label content
        this.update3DAircraftLabelContent(label, aircraft);
        
        // Add click handler to label
        label.addEventListener('click', (event) => {
            event.preventDefault();
            event.stopPropagation();
            this.select3DAircraft(icao, aircraft);
        });
        
        this.radar3d.labelContainer.appendChild(label);
        this.radar3d.aircraftLabels.set(icao, label);
        
        return label;
    }
    
    update3DAircraftLabelContent(label, aircraft) {
        const callsign = aircraft.Callsign || aircraft.Icao || 'N/A';
        const altitude = aircraft.Altitude ? `${Math.round(aircraft.Altitude)}ft` : 'N/A';
        const speed = aircraft.GroundSpeed ? `${Math.round(aircraft.GroundSpeed)}kts` : 'N/A';

        label.innerHTML = `
            <div style="font-weight: bold;">${escapeHtml(callsign)}</div>
            <div style="font-size: 10px; opacity: 0.8;">${escapeHtml(altitude)} • ${escapeHtml(speed)}</div>
        `;
    }
    
    update3DAircraftLabels() {
        if (!this.radar3d || !this.radar3d.aircraftLabels || !this.aircraftManager) return;
        
        // Vector for 3D to screen coordinate conversion
        const vector = new THREE.Vector3();
        const canvas = this.radar3d.renderer.domElement;
        
        this.radar3d.aircraftLabels.forEach((label, icao) => {
            const mesh = this.radar3d.aircraftMeshes.get(icao);
            const aircraft = this.aircraftManager.aircraftData.get(icao);
            
            if (mesh && aircraft && mesh.visible) {
                // Get aircraft world position
                vector.setFromMatrixPosition(mesh.matrixWorld);
                
                // Project to screen coordinates
                vector.project(this.radar3d.camera);
                
                // Check if aircraft is behind camera
                if (vector.z > 1) {
                    label.style.display = 'none';
                    return;
                }
                
                // Convert to screen pixels
                const x = (vector.x * 0.5 + 0.5) * canvas.clientWidth;
                const y = (vector.y * -0.5 + 0.5) * canvas.clientHeight;
                
                // Position label slightly offset from aircraft position
                label.style.left = `${x + 10}px`;
                label.style.top = `${y - 30}px`;
                label.style.display = 'block';
                label.style.opacity = '1';
                
                // Update label content with current aircraft data
                this.update3DAircraftLabelContent(label, aircraft);
            } else {
                label.style.display = 'none';
            }
        });
    }
    
    handle3DClick(event) {
        if (!this.radar3d || !this.radar3d.raycaster || !this.aircraftManager) return;
        
        // Prevent event from propagating to orbit controls
        event.preventDefault();
        
        const canvas = this.radar3d.renderer.domElement;
        const rect = canvas.getBoundingClientRect();
        
        // Calculate mouse position in normalized device coordinates (-1 to +1)
        this.radar3d.mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
        this.radar3d.mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
        
        // Update raycaster with camera and mouse position
        this.radar3d.raycaster.setFromCamera(this.radar3d.mouse, this.radar3d.camera);
        
        // Get all visible aircraft meshes
        const aircraftMeshes = [];
        this.radar3d.aircraftMeshes.forEach((mesh, icao) => {
            if (mesh.visible) {
                mesh.userData.icao = icao; // Store ICAO for identification
                aircraftMeshes.push(mesh);
            }
        });
        
        // Check for intersections
        const intersects = this.radar3d.raycaster.intersectObjects(aircraftMeshes);
        
        if (intersects.length > 0) {
            const selectedMesh = intersects[0].object;
            const selectedIcao = selectedMesh.userData.icao;
            const aircraft = this.aircraftManager.aircraftData.get(selectedIcao);
            
            if (aircraft) {
                this.select3DAircraft(selectedIcao, aircraft);
            }
        } else {
            // Clicked on empty space, deselect
            this.deselect3DAircraft();
        }
    }
    
    select3DAircraft(icao, aircraft) {
        // Deselect previous aircraft
        this.deselect3DAircraft();
        
        this.radar3d.selectedAircraft = icao;
        
        // Highlight selected aircraft mesh
        const mesh = this.radar3d.aircraftMeshes.get(icao);
        if (mesh) {
            mesh.material.color.setHex(0xff8800); // Orange color for selection
            mesh.material.emissive.setHex(0x441100); // Subtle glow
        }
        
        // Highlight selected aircraft label
        const label = this.radar3d.aircraftLabels.get(icao);
        if (label) {
            label.style.background = 'rgba(255, 136, 0, 0.9)';
            label.style.borderColor = 'rgba(255, 136, 0, 0.8)';
            label.style.transform = 'scale(1.1)';
        }
        
        // Log selection for debugging
        if (this.verbose) {
            console.log(`Selected aircraft: ${icao}`, aircraft);
        }
        
        // Trigger aircraft selection in main aircraft manager (for consistency with 2D map)
        if (this.aircraftManager.onAircraftSelected) {
            this.aircraftManager.onAircraftSelected(icao, aircraft);
        }
    }
    
    deselect3DAircraft() {
        if (!this.radar3d.selectedAircraft) return;
        
        const icao = this.radar3d.selectedAircraft;
        
        // Reset mesh appearance to original aircraft color
        const mesh = this.radar3d.aircraftMeshes.get(icao);
        const aircraft = this.aircraftManager.aircraftData.get(icao);
        if (mesh && aircraft) {
            const visualType = this.getAircraftVisualType(aircraft);
            const originalColor = this.getAircraftColor(aircraft, visualType);
            mesh.material.color.setHex(originalColor);
            mesh.material.emissive.setHex(originalColor);
            mesh.material.emissiveIntensity = 0.1; // Restore original glow
        }
        
        // Reset label appearance
        const label = this.radar3d.aircraftLabels.get(icao);
        if (label) {
            label.style.background = 'rgba(0, 0, 0, 0.8)';
            label.style.borderColor = 'rgba(255, 255, 255, 0.3)';
            label.style.transform = 'scale(1)';
        }
        
        this.radar3d.selectedAircraft = null;
    }
    
    create3DAircraftTrail(icao, aircraft) {
        if (!aircraft.position_history || aircraft.position_history.length < 2) return;
        
        // Create line geometry for trail
        const points = [];
        const originLat = this.radar3d.origin.latitude;
        const originLon = this.radar3d.origin.longitude;
        
        // Convert position history to 3D world coordinates
        aircraft.position_history.forEach(pos => {
            if (pos.lat && pos.lon) {
                const x = (pos.lon - originLon) * 111320 * Math.cos(pos.lat * Math.PI / 180) / 1000;
                const z = -(pos.lat - originLat) * 111320 / 1000;
                const y = (pos.altitude || 0) / 1000; // Use historical altitude from position history
                points.push(new THREE.Vector3(x, y, z));
            }
        });
        
        if (points.length < 2) return;
        
        // Create enhanced line geometry with gradient colors
        const geometry = this.create3DTrailGeometry(points, aircraft);
        
        // Create material with vertex colors for gradient effect
        const material = new THREE.LineBasicMaterial({ 
            vertexColors: true,
            transparent: true,
            opacity: 0.8
        });
        
        const trail = new THREE.Line(geometry, material);
        
        this.radar3d.scene.add(trail);
        this.radar3d.aircraftTrails.set(icao, trail);
        
        if (this.verbose) {
            console.log(`Created trail for ${icao} with ${points.length} points`);
        }
    }
    
    update3DAircraftTrail(icao, aircraft) {
        if (!aircraft.position_history || aircraft.position_history.length < 2) {
            // Remove trail if no history
            const trail = this.radar3d.aircraftTrails.get(icao);
            if (trail) {
                this.radar3d.scene.remove(trail);
                this.radar3d.aircraftTrails.delete(icao);
            }
            return;
        }
        
        const trail = this.radar3d.aircraftTrails.get(icao);
        
        if (trail) {
            // Update existing trail
            const points = [];
            const originLat = this.radar3d.origin.latitude;
            const originLon = this.radar3d.origin.longitude;
            
            // Convert position history to 3D world coordinates
            aircraft.position_history.forEach(pos => {
                if (pos.lat && pos.lon) {
                    const x = (pos.lon - originLon) * 111320 * Math.cos(pos.lat * Math.PI / 180) / 1000;
                    const z = -(pos.lat - originLat) * 111320 / 1000;
                    const y = (pos.altitude || 0) / 1000; // Use historical altitude from position history
                    points.push(new THREE.Vector3(x, y, z));
                }
            });
            
            if (points.length >= 2) {
                // Update geometry with enhanced trail visualization
                const newGeometry = this.create3DTrailGeometry(points, aircraft);
                trail.geometry.dispose(); // Clean up old geometry
                trail.geometry = newGeometry;
            }
        } else {
            // Create new trail
            this.create3DAircraftTrail(icao, aircraft);
        }
    }
    
    toggle3DTrails() {
        this.radar3d.showTrails = !this.radar3d.showTrails;
        
        if (this.radar3d.showTrails) {
            // Create trails for all existing aircraft
            this.aircraftManager.aircraftData.forEach((aircraft, icao) => {
                if (this.radar3d.aircraftMeshes.has(icao)) {
                    this.create3DAircraftTrail(icao, aircraft);
                }
            });
        } else {
            // Remove all trails
            this.radar3d.aircraftTrails.forEach((trail, icao) => {
                this.radar3d.scene.remove(trail);
            });
            this.radar3d.aircraftTrails.clear();
        }
        
        // Update button state
        const trailButton = document.getElementById('radar3d-trails');
        if (trailButton) {
            trailButton.textContent = this.radar3d.showTrails ? 'Hide Trails' : 'Show Trails';
            trailButton.classList.toggle('active', this.radar3d.showTrails);
        }
        
        if (this.verbose) {
            console.log(`3D trails ${this.radar3d.showTrails ? 'enabled' : 'disabled'}`);
        }
    }
    
    // Aircraft visual type determination based on category and other data
    getAircraftVisualType(aircraft) {
        const category = aircraft.Category || '';
        
        // Helicopter detection
        if (category.toLowerCase().includes('helicopter') || 
            category.toLowerCase().includes('rotorcraft')) {
            return 'helicopter';
        }
        
        // Weight-based categories
        if (category.includes('Heavy')) return 'heavy';
        if (category.includes('Medium')) return 'medium';  
        if (category.includes('Light')) return 'light';
        
        // Size-based categories (fallback)
        if (category.includes('Large')) return 'heavy';
        if (category.includes('Small')) return 'light';
        
        // Default to medium commercial aircraft
        return 'medium';
    }
    
    // Get aircraft color based on type and status
    getAircraftColor(aircraft, visualType) {
        // Emergency override
        if (aircraft.Emergency && aircraft.Emergency !== 'None') {
            return 0xff0000; // Red for emergencies
        }
        
        // Special squawk codes
        if (aircraft.Squawk) {
            if (aircraft.Squawk === '7500' || aircraft.Squawk === '7600' || aircraft.Squawk === '7700') {
                return 0xff0000; // Red for emergency squawks
            }
        }
        
        // Type-based colors
        switch (visualType) {
            case 'helicopter':
                return 0x00ffff; // Cyan for helicopters
            case 'heavy':
                return 0x0088ff; // Blue for heavy aircraft
            case 'medium':
                return 0x00ff00; // Green for medium aircraft (default)
            case 'light':
                return 0xffff00; // Yellow for light aircraft
            default:
                return 0x00ff00; // Default green
        }
    }
    
    // Create appropriate 3D geometry and material for aircraft type
    create3DAircraftGeometry(aircraft) {
        const visualType = this.getAircraftVisualType(aircraft);
        const color = this.getAircraftColor(aircraft, visualType);
        
        let geometry, scale = 1;
        
        switch (visualType) {
            case 'helicopter':
                // Helicopter: Wider, flatter shape with rotor disk
                geometry = new THREE.CylinderGeometry(0.8, 0.4, 0.6, 8);
                scale = 1.0;
                break;
                
            case 'heavy':
                // Heavy aircraft: Large, wide fuselage
                geometry = new THREE.CylinderGeometry(0.4, 0.8, 3.0, 8);
                scale = 1.3;
                break;
                
            case 'light':
                // Light aircraft: Small, simple shape
                geometry = new THREE.ConeGeometry(0.3, 1.5, 6);
                scale = 0.7;
                break;
                
            case 'medium':
            default:
                // Medium/default: Standard cone shape
                geometry = new THREE.ConeGeometry(0.5, 2, 6);
                scale = 1.0;
                break;
        }
        
        const material = new THREE.MeshLambertMaterial({ 
            color: color,
            emissive: color,
            emissiveIntensity: 0.1
        });
        
        // Scale geometry if needed
        if (scale !== 1.0) {
            geometry.scale(scale, scale, scale);
        }
        
        return { geometry, material };
    }
    
    // Update aircraft visual indicators (direction, climb/descent)
    update3DAircraftVisuals(mesh, aircraft) {
        // Set aircraft direction based on track
        if (aircraft.Track !== undefined && aircraft.Track !== 0) {
            mesh.rotation.y = -aircraft.Track * Math.PI / 180;
        }
        
        // Add climb/descent indicator
        this.update3DClimbDescentIndicator(mesh, aircraft);
    }
    
    // Add or update climb/descent visual indicator
    update3DClimbDescentIndicator(mesh, aircraft) {
        const verticalRate = aircraft.VerticalRate || 0;
        const threshold = 500; // feet per minute
        
        // Remove existing indicator
        const existingIndicator = mesh.getObjectByName('climbIndicator');
        if (existingIndicator) {
            mesh.remove(existingIndicator);
        }
        
        // Add new indicator if significant vertical movement
        if (Math.abs(verticalRate) > threshold) {
            let indicatorGeometry, indicatorMaterial;
            
            if (verticalRate > threshold) {
                // Climbing - green upward arrow
                indicatorGeometry = new THREE.ConeGeometry(0.2, 0.8, 4);
                indicatorMaterial = new THREE.MeshBasicMaterial({ 
                    color: 0x00ff00, 
                    transparent: true, 
                    opacity: 0.8 
                });
            } else if (verticalRate < -threshold) {
                // Descending - red downward arrow
                indicatorGeometry = new THREE.ConeGeometry(0.2, 0.8, 4);
                indicatorMaterial = new THREE.MeshBasicMaterial({ 
                    color: 0xff0000, 
                    transparent: true, 
                    opacity: 0.8 
                });
                indicatorGeometry.rotateX(Math.PI); // Flip for downward arrow
            }
            
            if (indicatorGeometry && indicatorMaterial) {
                const indicator = new THREE.Mesh(indicatorGeometry, indicatorMaterial);
                indicator.name = 'climbIndicator';
                indicator.position.set(0, 2, 0); // Position above aircraft
                mesh.add(indicator);
            }
        }
    }
    
    // Apply signal quality visual effects to aircraft mesh
    apply3DSignalQualityEffects(mesh, aircraft) {
        // Get signal quality data from sources
        const signalData = this.getAircraftSignalData(aircraft);
        
        // Apply opacity based on signal strength
        this.updateAircraftOpacity(mesh, signalData);
        
        // Apply emissive intensity based on signal quality
        this.updateAircraftEmissiveIntensity(mesh, signalData);
        
        // Add data source indicator
        this.addDataSourceIndicator(mesh, signalData);
    }
    
    // Extract signal data from aircraft sources
    getAircraftSignalData(aircraft) {
        if (!aircraft.sources || Object.keys(aircraft.sources).length === 0) {
            return {
                bestSignal: -50, // Default medium signal
                sourceCount: 0,
                primarySource: null,
                signalQuality: 'Unknown'
            };
        }
        
        let bestSignal = -999;
        let sourceCount = 0;
        let primarySource = null;
        
        // Find strongest signal and count sources
        Object.entries(aircraft.sources).forEach(([sourceId, sourceData]) => {
            sourceCount++;
            if (sourceData.signal_level > bestSignal) {
                bestSignal = sourceData.signal_level;
                primarySource = sourceId;
            }
        });
        
        return {
            bestSignal,
            sourceCount,
            primarySource,
            signalQuality: aircraft.SignalQuality || 'Unknown'
        };
    }
    
    // Update aircraft opacity based on signal strength
    updateAircraftOpacity(mesh, signalData) {
        // Map signal strength to opacity (stronger signal = more opaque)
        // Typical ADS-B signal range: -60 dBFS (weak) to 0 dBFS (strong)
        const minSignal = -60;
        const maxSignal = -5;
        const minOpacity = 0.3;
        const maxOpacity = 1.0;
        
        // Clamp signal to expected range
        const clampedSignal = Math.max(minSignal, Math.min(maxSignal, signalData.bestSignal));
        
        // Calculate opacity (linear mapping)
        const signalRange = maxSignal - minSignal;
        const signalNormalized = (clampedSignal - minSignal) / signalRange;
        const opacity = minOpacity + (signalNormalized * (maxOpacity - minOpacity));
        
        // Apply opacity to material
        mesh.material.transparent = true;
        mesh.material.opacity = opacity;
        
        // Also adjust emissive intensity for glow effect
        const baseEmissiveIntensity = 0.1;
        const maxEmissiveBoost = 0.3;
        mesh.material.emissiveIntensity = baseEmissiveIntensity + (signalNormalized * maxEmissiveBoost);
    }
    
    // Update emissive intensity based on signal quality assessment
    updateAircraftEmissiveIntensity(mesh, signalData) {
        let qualityMultiplier = 1.0;
        
        // Adjust based on signal quality description
        switch (signalData.signalQuality) {
            case 'Excellent':
                qualityMultiplier = 1.5;
                break;
            case 'Good':
                qualityMultiplier = 1.2;
                break;
            case 'Fair':
                qualityMultiplier = 0.8;
                break;
            case 'Poor':
                qualityMultiplier = 0.5;
                break;
            default:
                qualityMultiplier = 1.0;
        }
        
        // Apply quality multiplier to emissive intensity
        const currentIntensity = mesh.material.emissiveIntensity || 0.1;
        mesh.material.emissiveIntensity = Math.min(0.5, currentIntensity * qualityMultiplier);
    }
    
    // Add visual indicator for data source type
    addDataSourceIndicator(mesh, signalData) {
        // Remove existing source indicator
        const existingIndicator = mesh.getObjectByName('sourceIndicator');
        if (existingIndicator) {
            mesh.remove(existingIndicator);
        }
        
        // Only add indicator if we have multiple sources
        if (signalData.sourceCount > 1) {
            // Create small indicator showing multi-source data
            const indicatorGeometry = new THREE.SphereGeometry(0.1, 4, 4);
            const indicatorMaterial = new THREE.MeshBasicMaterial({ 
                color: signalData.sourceCount > 2 ? 0x00ff00 : 0xffaa00, // Green for 3+, orange for 2
                transparent: true, 
                opacity: 0.7 
            });
            
            const indicator = new THREE.Mesh(indicatorGeometry, indicatorMaterial);
            indicator.name = 'sourceIndicator';
            indicator.position.set(1, 1, 0); // Position to side of aircraft
            mesh.add(indicator);
        }
    }
    
    // Create enhanced trail geometry with gradient colors and speed-based effects
    create3DTrailGeometry(points, aircraft) {
        const geometry = new THREE.BufferGeometry();
        
        // Set positions
        const positions = new Float32Array(points.length * 3);
        const colors = new Float32Array(points.length * 3);
        
        // Get signal quality for trail styling
        const signalData = this.getAircraftSignalData(aircraft);
        const baseTrailColor = this.getTrailColor(aircraft, signalData);
        
        // Calculate colors with gradient effect (newer = brighter, older = dimmer)
        for (let i = 0; i < points.length; i++) {
            // Position
            positions[i * 3] = points[i].x;
            positions[i * 3 + 1] = points[i].y;
            positions[i * 3 + 2] = points[i].z;
            
            // Color with age-based fading
            const ageRatio = i / (points.length - 1); // 0 = oldest, 1 = newest
            const intensity = 0.3 + (ageRatio * 0.7); // Fade from 30% to 100% brightness
            
            colors[i * 3] = baseTrailColor.r * intensity;     // Red
            colors[i * 3 + 1] = baseTrailColor.g * intensity; // Green  
            colors[i * 3 + 2] = baseTrailColor.b * intensity; // Blue
        }
        
        geometry.setAttribute('position', new THREE.BufferAttribute(positions, 3));
        geometry.setAttribute('color', new THREE.BufferAttribute(colors, 3));
        
        return geometry;
    }
    
    // Get trail color based on aircraft type and signal quality
    getTrailColor(aircraft, signalData) {
        const visualType = this.getAircraftVisualType(aircraft);
        
        // Base colors for different aircraft types (more muted for trails)
        let baseColor;
        switch (visualType) {
            case 'helicopter':
                baseColor = { r: 0.0, g: 0.8, b: 0.8 }; // Cyan
                break;
            case 'heavy':
                baseColor = { r: 0.0, g: 0.4, b: 0.8 }; // Blue
                break;
            case 'light':
                baseColor = { r: 0.8, g: 0.8, b: 0.0 }; // Yellow
                break;
            case 'medium':
            default:
                baseColor = { r: 0.0, g: 0.6, b: 0.4 }; // Teal-green
                break;
        }
        
        // Adjust brightness based on signal quality
        const qualityMultiplier = this.getSignalQualityMultiplier(signalData.signalQuality);
        
        return {
            r: Math.min(1.0, baseColor.r * qualityMultiplier),
            g: Math.min(1.0, baseColor.g * qualityMultiplier),
            b: Math.min(1.0, baseColor.b * qualityMultiplier)
        };
    }
    
    // Get brightness multiplier based on signal quality
    getSignalQualityMultiplier(signalQuality) {
        switch (signalQuality) {
            case 'Excellent': return 1.2;
            case 'Good': return 1.0;
            case 'Fair': return 0.8;
            case 'Poor': return 0.6;
            default: return 0.9;
        }
    }

    initialize3DControls() {
        // Enable and initialize the Reset View button
        const resetButton = document.getElementById('radar3d-reset');
        if (resetButton) {
            resetButton.disabled = false;
            resetButton.addEventListener('click', () => this.reset3DView());
        }
        
        // Enable and initialize the Auto Rotate toggle button
        const autoRotateButton = document.getElementById('radar3d-auto-rotate');
        if (autoRotateButton) {
            autoRotateButton.disabled = false;
            autoRotateButton.addEventListener('click', () => this.toggle3DAutoRotate());
        }
        
        // Enable and initialize the Trails toggle button
        const trailsButton = document.getElementById('radar3d-trails');
        if (trailsButton) {
            trailsButton.disabled = false;
            trailsButton.addEventListener('click', () => this.toggle3DTrails());
        }
        
        // Enable and initialize the Range slider
        const rangeSlider = document.getElementById('radar3d-range');
        const rangeValue = document.getElementById('radar3d-range-value');
        if (rangeSlider && rangeValue) {
            rangeSlider.disabled = false;
            this.radar3d.range = parseInt(rangeSlider.value); // Store current range
            
            rangeSlider.addEventListener('input', (e) => {
                this.radar3d.range = parseInt(e.target.value);
                rangeValue.textContent = this.radar3d.range;
                this.update3DRadarRange();
            });
        }
    }

    reset3DView() {
        if (!this.radar3d || !this.radar3d.controls) return;

        // Reset camera to default position
        this.radar3d.camera.position.set(
            this.radar3d.defaultPosition.x,
            this.radar3d.defaultPosition.y,
            this.radar3d.defaultPosition.z
        );
        
        // Reset camera target
        this.radar3d.controls.target.set(
            this.radar3d.defaultTarget.x,
            this.radar3d.defaultTarget.y,
            this.radar3d.defaultTarget.z
        );
        
        // Update controls to apply changes smoothly
        this.radar3d.controls.update();
    }

    toggle3DAutoRotate() {
        if (!this.radar3d || !this.radar3d.controls) return;
        
        // Toggle auto-rotate state
        this.radar3d.autoRotate = !this.radar3d.autoRotate;
        this.radar3d.controls.autoRotate = this.radar3d.autoRotate;
        
        // Update button text to reflect current state
        const autoRotateButton = document.getElementById('radar3d-auto-rotate');
        if (autoRotateButton) {
            autoRotateButton.textContent = this.radar3d.autoRotate ? 'Stop Auto Rotate' : 'Auto Rotate';
            autoRotateButton.classList.toggle('active', this.radar3d.autoRotate);
        }
    }

    async fetch3DOrigin() {
        try {
            const response = await fetch('/api/origin');
            if (response.ok) {
                const origin = await response.json();
                this.radar3d.origin = origin;
                if (this.verbose) {
                    console.log('3D Radar origin set to:', origin);
                }
            }
        } catch (error) {
            console.warn('Failed to fetch origin, using fallback:', error);
        }
    }

    update3DRadarRange() {
        // Simply trigger a full update of the 3D radar with new range filter
        this.update3DRadar();
    }

    // Calculate distance between two lat/lon points in kilometers
    calculateDistance(lat1, lon1, lat2, lon2) {
        const R = 6371; // Earth's radius in kilometers
        const dLat = (lat2 - lat1) * Math.PI / 180;
        const dLon = (lon2 - lon1) * Math.PI / 180;
        const a = 
            Math.sin(dLat/2) * Math.sin(dLat/2) +
            Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) * 
            Math.sin(dLon/2) * Math.sin(dLon/2);
        const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
        return R * c;
    }

    updateOpenPopupAges() {
        // Find any open aircraft popups and update their age displays
        if (!this.aircraftManager) return;
        
        this.aircraftManager.aircraftMarkers.forEach((marker, icao) => {
            if (marker.isPopupOpen()) {
                const aircraft = this.aircraftManager.aircraftData.get(icao);
                if (aircraft) {
                    // Refresh the popup content with current age
                    marker.setPopupContent(this.aircraftManager.createPopupContent(aircraft));
                    
                    // Re-enhance callsign display for the updated popup
                    const popupElement = marker.getPopup().getElement();
                    if (popupElement) {
                        this.aircraftManager.enhanceCallsignDisplay(popupElement);
                    }
                }
            }
        });
    }

    startPeriodicTasks() {
        // Update clocks every second
        setInterval(() => this.uiManager.updateClocks(), 1000);
        
        // Update aircraft ages and refresh displays every second
        setInterval(() => {
            // Update aircraft table to show current ages
            this.uiManager.updateAircraftTable();
            
            // Update any open aircraft popups with current ages
            this.updateOpenPopupAges();
        }, 1000);
        
        // Update charts every 10 seconds
        setInterval(() => this.updateCharts(), 10000);
        
        // Periodic cleanup
        setInterval(() => {
            // Clean up old trail data, etc.
        }, 30000);
    }
    
    setupCollapsibleSections() {
        // Setup Display Options collapsible
        const displayHeader = document.getElementById('display-options-header');
        const displayContent = document.getElementById('display-options-content');
        
        if (displayHeader && displayContent) {
            displayHeader.addEventListener('click', () => {
                const isCollapsed = displayContent.classList.contains('collapsed');
                
                if (isCollapsed) {
                    // Expand
                    displayContent.classList.remove('collapsed');
                    displayHeader.classList.remove('collapsed');
                } else {
                    // Collapse
                    displayContent.classList.add('collapsed');
                    displayHeader.classList.add('collapsed');
                }
                
                // Save state to localStorage
                localStorage.setItem('displayOptionsCollapsed', !isCollapsed);
            });
            
            // Restore saved state (default to collapsed)
            const savedState = localStorage.getItem('displayOptionsCollapsed');
            const shouldCollapse = savedState === null ? true : savedState === 'true';
            
            if (shouldCollapse) {
                displayContent.classList.add('collapsed');
                displayHeader.classList.add('collapsed');
            } else {
                displayContent.classList.remove('collapsed');
                displayHeader.classList.remove('collapsed');
            }
        }
    }
}

// Initialize application when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
    window.skyview = new SkyView();
});