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251
js/services/pushFlicIntegration.js
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251
js/services/pushFlicIntegration.js
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// pushFlicIntegration.js
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import { getPublicVapidKey, getBackendUrl, FLIC_BUTTON_ID} from '../config.js';
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let pushSubscription = null; // Keep track locally if needed
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let actionHandlers = {}; // Store handlers for different Flic actions
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// --- Helper Functions ---
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// Get stored basic auth credentials or prompt user for them
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function getBasicAuthCredentials() {
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const storedAuth = localStorage.getItem('basicAuthCredentials');
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if (storedAuth) {
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try {
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const credentials = JSON.parse(storedAuth);
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// Check if the credentials are valid
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if (credentials.username && credentials.password) {
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console.log('Using stored basic auth credentials.');
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return credentials;
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}
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} catch (error) {
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console.error('Failed to parse stored credentials:', error);
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}
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}
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// No valid stored credentials found
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// The function will return null and the caller should handle prompting if needed
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console.log('No valid stored credentials found.');
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return null;
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}
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// Create Basic Auth header string
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function createBasicAuthHeader(credentials) {
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if (!credentials?.username || !credentials.password) return null;
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return 'Basic ' + btoa(`${credentials.username}:${credentials.password}`);
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}
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// Convert URL-safe base64 string to Uint8Array
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function urlBase64ToUint8Array(base64String) {
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const padding = '='.repeat((4 - base64String.length % 4) % 4);
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const base64 = (base64String + padding).replace(/-/g, '+').replace(/_/g, '/');
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const rawData = window.atob(base64);
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const outputArray = new Uint8Array(rawData.length);
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for (let i = 0; i < rawData.length; ++i) {
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outputArray[i] = rawData.charCodeAt(i);
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}
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return outputArray;
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}
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// Convert ArrayBuffer to URL-safe Base64 string
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function arrayBufferToBase64(buffer) {
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let binary = '';
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const bytes = new Uint8Array(buffer);
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for (let i = 0; i < bytes.byteLength; i++) { binary += String.fromCharCode(bytes[i]); }
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return window.btoa(binary).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');
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}
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// --- Push Subscription Logic ---
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async function subscribeToPush() {
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const buttonId = FLIC_BUTTON_ID; // Use configured button ID
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if (!('serviceWorker' in navigator) || !('PushManager' in window)) {
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console.error('Push Messaging is not supported.');
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alert('Push Notifications are not supported by your browser.');
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return;
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}
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try {
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// First request notification permission
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console.log('Requesting notification permission...');
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const permission = await Notification.requestPermission();
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if (permission !== 'granted') {
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console.warn('Notification permission denied.');
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alert('Please enable notifications to link the Flic button.');
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return;
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}
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console.log('Notification permission granted.');
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// Get stored credentials but don't prompt
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let credentials = getBasicAuthCredentials();
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const hasExistingCreds = !!credentials;
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console.log('Has existing credentials:', hasExistingCreds);
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// No prompting for credentials - user must enter them manually in the UI
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if (!credentials) {
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console.log('No credentials found. User needs to enter them manually.');
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// Just return if no credentials are available
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return;
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}
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const registration = await navigator.serviceWorker.ready;
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let existingSubscription = await registration.pushManager.getSubscription();
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let needsResubscribe = !existingSubscription;
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console.log('Existing subscription found:', !!existingSubscription);
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if (existingSubscription) {
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const existingKey = existingSubscription.options?.applicationServerKey;
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if (!existingKey || arrayBufferToBase64(existingKey) !== getPublicVapidKey()) {
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console.log('VAPID key mismatch or missing. Unsubscribing old subscription.');
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await existingSubscription.unsubscribe();
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existingSubscription = null;
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needsResubscribe = true;
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} else {
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console.log('Existing valid subscription found.');
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pushSubscription = existingSubscription; // Store it
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}
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}
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let finalSubscription = existingSubscription;
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if (needsResubscribe) {
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console.log('Subscribing for push notifications...');
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const applicationServerKey = urlBase64ToUint8Array(getPublicVapidKey());
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try {
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finalSubscription = await registration.pushManager.subscribe({
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userVisibleOnly: true,
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applicationServerKey: applicationServerKey
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});
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console.log('New push subscription obtained:', finalSubscription);
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pushSubscription = finalSubscription; // Store it
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} catch (subscribeError) {
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console.error('Error subscribing to push:', subscribeError);
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alert(`Failed to subscribe: ${subscribeError.message}`);
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return;
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}
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}
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if (!finalSubscription) {
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console.error("Failed to obtain a subscription object.");
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alert("Could not get subscription details.");
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return;
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}
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await sendSubscriptionToServer(finalSubscription, buttonId);
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} catch (error) {
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console.error('Error during push subscription:', error);
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alert(`Subscription failed: ${error.message}`);
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}
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}
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async function sendSubscriptionToServer(subscription, buttonId) {
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console.log(`Sending subscription for button "${buttonId}" to backend...`);
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const credentials = getBasicAuthCredentials();
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if (!credentials) {
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console.log('No credentials found. User needs to enter them manually.');
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return;
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}
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const headers = { 'Content-Type': 'application/json' };
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const authHeader = createBasicAuthHeader(credentials);
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if (authHeader) headers['Authorization'] = authHeader;
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try {
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// Add support for handling CORS preflight with credentials
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const response = await fetch(`${getBackendUrl()}/subscribe`, {
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method: 'POST',
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body: JSON.stringify({ button_id: buttonId, subscription: subscription }),
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headers: headers,
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credentials: 'include' // This ensures credentials are sent with OPTIONS requests too
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});
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if (response.ok) {
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const result = await response.json();
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console.log('Subscription sent successfully:', result.message);
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// Update the UI to show subscription status as active
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const subscriptionStatusElement = document.getElementById('subscriptionStatus');
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if (subscriptionStatusElement) {
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subscriptionStatusElement.textContent = 'active';
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subscriptionStatusElement.className = 'status-active';
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// Enable unsubscribe button when subscription is active
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const unsubscribeButton = document.getElementById('pushUnsubscribeButton');
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if (unsubscribeButton) unsubscribeButton.disabled = false;
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// Change subscribe button text to "Re-subscribe"
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const resubscribeButton = document.getElementById('pushResubscribeButton');
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if (resubscribeButton) resubscribeButton.textContent = 'Re-subscribe';
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// Enable simulate button when subscription is active
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const simulateButton = document.getElementById('simulateClickButton');
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if (simulateButton) simulateButton.disabled = false;
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}
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// Success alert removed as requested
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} else {
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let errorMsg = `Server error: ${response.status}`;
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if (response.status === 401 || response.status === 403) {
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localStorage.removeItem('basicAuthCredentials'); // Clear bad creds
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errorMsg = 'Authentication failed. Please try again.';
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} else {
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try { errorMsg = (await response.json()).message || errorMsg; } catch (e) { /* use default */ }
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}
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console.error('Failed to send subscription:', errorMsg);
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alert(`Failed to save link: ${errorMsg}`);
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}
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} catch (error) {
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console.error('Network error sending subscription:', error);
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alert(`Network error: ${error.message}`);
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}
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}
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// --- Flic Action Handling ---
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// Called by app.js when a message is received from the service worker
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export function handleFlicAction(action, buttonId, timestamp, batteryLevel) {
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console.log(`[PushFlic] Received Action: ${action} from Button: ${buttonId} battery: ${batteryLevel}% at ${timestamp}`);
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// Ignore actions from buttons other than the configured one
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if (buttonId !== FLIC_BUTTON_ID) {
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console.warn(`[PushFlic] Ignoring action from unknown button: ${buttonId}`);
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return;
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}
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// Find the registered handler for this action
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const handler = actionHandlers[action];
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if (handler && typeof handler === 'function') {
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console.log(`[PushFlic] Executing handler for ${action}`);
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try {
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// Execute the handler registered in app.js
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handler();
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// Log success
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console.log(`[PushFlic] Successfully executed handler for ${action}`);
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} catch (error) {
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console.error(`[PushFlic] Error executing handler for ${action}:`, error);
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}
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} else {
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console.warn(`[PushFlic] No handler registered for action: ${action}. Available handlers:`, Object.keys(actionHandlers));
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}
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}
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// --- Initialization ---
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// Initialize PushFlic with action handlers
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export function initPushFlic(handlers) {
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if (handlers && Object.keys(handlers).length > 0) {
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actionHandlers = handlers;
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console.log('[PushFlic] Stored action handlers:', Object.keys(actionHandlers));
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} else {
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console.warn('[PushFlic] No action handlers provided to initPushFlic!');
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}
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}
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// New function to manually trigger the subscription process
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export function setupPushNotifications() {
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console.log('[PushFlic] Manually triggering push notification setup');
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subscribeToPush();
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}
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