// GigLez - Main Application Logic

// Navigation
document.addEventListener('DOMContentLoaded', () => {
    setupNavigation();
    initializeApp();
});

function setupNavigation() {
    const navLinks = document.querySelectorAll('.nav-link');
    const sections = document.querySelectorAll('.section');

    navLinks.forEach(link => {
        link.addEventListener('click', (e) => {
            e.preventDefault();

            const target = link.getAttribute('href').substring(1);

            // Don't navigate for external links
            if (link.hasAttribute('target')) {
                window.open(link.getAttribute('href'), '_blank');
                return;
            }

            // Update active nav link
            navLinks.forEach(l => l.classList.remove('active'));
            link.classList.add('active');

            // Show target section
            sections.forEach(s => s.classList.remove('active'));
            const targetSection = document.getElementById(`${target}-section`);
            if (targetSection) {
                targetSection.classList.add('active');

                // Trigger section-specific actions
                onSectionChange(target);
            }
        });
    });
}

function onSectionChange(sectionName) {
    switch (sectionName) {
        case 'map':
            // Refresh map tiles
            if (window.map) {
                setTimeout(() => window.map.invalidateSize(), 100);
            }
            break;

        case 'stats':
            // Load statistics
            if (typeof loadStatistics === 'function') {
                loadStatistics();
            }
            break;
    }
}

function initializeApp() {
    // Check API connection
    checkAPIConnection();

    // Load initial data
    loadInitialData();

    // Set up periodic refresh
    setInterval(refreshData, 60000); // Refresh every minute
}

async function checkAPIConnection() {
    try {
        const response = await fetch('/health');
        const data = await response.json();

        if (data.status === 'healthy') {
            console.log('✅ API connection healthy');
        } else {
            console.warn('⚠️ API connection unhealthy:', data);
        }
    } catch (error) {
        console.error('❌ API connection failed:', error);
    }
}

async function loadInitialData() {
    // Load captures for map
    if (typeof loadCaptures === 'function') {
        await loadCaptures();
    }
}

async function refreshData() {
    // Refresh map data if on map view
    const mapSection = document.getElementById('map-section');
    if (mapSection.classList.contains('active')) {
        if (typeof window.reloadMapData === 'function') {
            window.reloadMapData();
        }
    }
}

// Utility functions
function showNotification(message, type = 'info') {
    // Simple notification system
    const notification = document.createElement('div');
    notification.className = `notification notification-${type}`;
    notification.textContent = message;

    document.body.appendChild(notification);

    setTimeout(() => {
        notification.classList.add('fade-out');
        setTimeout(() => notification.remove(), 300);
    }, 3000);
}

function formatFrequency(hz) {
    return (hz / 1e6).toFixed(2) + ' MHz';
}

function formatDate(dateString) {
    return new Date(dateString).toLocaleString();
}

function formatCoordinates(lat, lon) {
    return `${lat.toFixed(6)}, ${lon.toFixed(6)}`;
}

// Export utilities
window.showNotification = showNotification;
window.formatFrequency = formatFrequency;
window.formatDate = formatDate;
window.formatCoordinates = formatCoordinates;