Added push notifications

hooks/useNotificationListener.ts

@@ -0,0 +1,25 @@
+import * as Notifications from "expo-notifications";
+import { useEffect } from "react";
+
+export function useNotificationListener(
+	onNotificationReceived: (notification: Notifications.Notification) => void
+) {
+	useEffect(() => {
+		// Listener for notifications received while app is in foreground
+		const subscription = Notifications.addNotificationReceivedListener(notification => {
+			console.log("Notification received:", notification);
+			onNotificationReceived(notification);
+		});
+
+		// Listener for user interacting with a notification
+		const responseSubscription = Notifications.addNotificationResponseReceivedListener(response => {
+			console.log("Notification response:", response);
+			onNotificationReceived(response.notification);
+		});
+
+		return () => {
+			subscription.remove();
+			responseSubscription.remove();
+		};
+	}, []);
+}

hooks/usePushNotifications.ts

@@ -0,0 +1,73 @@
+import * as Notifications from "expo-notifications";
+import * as Permissions from "expo-permissions";
+import { useEffect, useState } from "react";
+import { Platform } from "react-native";
+
+type RegisterTokenParams = {
+	userId: number;
+	apiKey: string;
+	backendUrl: string;
+	appVersion?: string;
+	locale?: string;
+	topics?: string[];
+};
+
+export function usePushNotifications({
+	userId,
+	apiKey,
+	backendUrl,
+	appVersion = "1.0.0",
+	locale,
+	topics
+}: RegisterTokenParams) {
+	const [expoPushToken, setExpoPushToken] = useState<string | null>(null);
+
+	useEffect(() => {
+		(async () => {
+			const token = await registerForPushNotificationsAsync();
+			if (token) {
+				setExpoPushToken(token);
+				await registerTokenWithBackend(token);
+			}
+		})();
+	}, []);
+
+	const registerTokenWithBackend = async (token: string) => {
+		try {
+			await fetch(`${backendUrl}/register_token`, {
+				method: "POST",
+				headers: {
+					"Content-Type": "application/json",
+					"X-API-Key": apiKey
+				},
+				body: JSON.stringify({
+					user_id: userId,
+					token,
+					platform: Platform.OS,
+					app_ver: appVersion,
+					locale,
+					topics
+				})
+			});
+			console.log("Push token registered with backend ✅");
+		} catch (error) {
+			console.error("Failed to register token with backend:", error);
+		}
+	};
+
+	return expoPushToken;
+}
+
+async function registerForPushNotificationsAsync() {
+	let { status } = await Permissions.askAsync(Permissions.NOTIFICATIONS);
+
+	if (status !== "granted") {
+		console.log("Permission not granted for push notifications.");
+		return null;
+	}
+
+	const tokenData = await Notifications.getExpoPushTokenAsync();
+	const token = tokenData.data;
+	console.log("Expo Push Token:", token);
+	return token;
+}