// PWA Service Worker Registration

if ('serviceWorker' in navigator) {
    window.addEventListener('load', () => {
        navigator.serviceWorker.register('/static/sw.js')
            .then(registration => {
                console.log('ServiceWorker registered:', registration);
            })
            .catch(error => {
                console.log('ServiceWorker registration failed:', error);
            });
    });
}

// Install prompt
let deferredPrompt;

window.addEventListener('beforeinstallprompt', (e) => {
    e.preventDefault();
    deferredPrompt = e;
    
    // Show install button if you have one
    const installBtn = document.getElementById('install-btn');
    if (installBtn) {
        installBtn.style.display = 'block';
        
        installBtn.addEventListener('click', () => {
            installBtn.style.display = 'none';
            deferredPrompt.prompt();
            
            deferredPrompt.userChoice.then((choiceResult) => {
                if (choiceResult.outcome === 'accepted') {
                    console.log('User accepted the install prompt');
                }
                deferredPrompt = null;
            });
        });
    }
});

// Check if app is installed
window.addEventListener('appinstalled', () => {
    console.log('FINA has been installed');
    showToast('FINA installed successfully!', 'success');
});

// Online/Offline status
window.addEventListener('online', () => {
    showToast('You are back online', 'success');
});

window.addEventListener('offline', () => {
    showToast('You are offline. Some features may be limited.', 'warning');
});