Add notifications support.

util/notificationHandler.js

@@ -0,0 +1,72 @@
+import { getCurrentUser } from '@/firebase/firebase.utils';
+import { UPDATE_FCM_TOKEN } from '@/graphql/bodyshop.queries';
+import { client } from '@/graphql/client';
+import Constants from 'expo-constants';
+import * as Device from 'expo-device';
+import * as Notifications from 'expo-notifications';
+import { Platform } from 'react-native';
+
+Notifications.setNotificationHandler({
+    handleNotification: async () => ({
+        shouldPlaySound: false,
+        shouldSetBadge: false,
+        shouldShowBanner: true,
+        shouldShowList: true,
+    }),
+});
+
+
+async function registerForPushNotificationsAsync() {
+    console.log("Registering for push notifications...");
+    if (Platform.OS === 'android') {
+        await Notifications.setNotificationChannelAsync('default', {
+            name: 'default',
+            importance: Notifications.AndroidImportance.MAX,
+            vibrationPattern: [0, 250, 250, 250],
+            lightColor: '#FF231F7C',
+        });
+    }
+
+    if (Device.isDevice) {
+        const { status: existingStatus } = await Notifications.getPermissionsAsync();
+        let finalStatus = existingStatus;
+        if (existingStatus !== 'granted') {
+            const { status } = await Notifications.requestPermissionsAsync();
+            finalStatus = status;
+        }
+        if (finalStatus !== 'granted') {
+            throw new Error('Permission not granted to get push token for push notification!');
+        }
+        const projectId =
+            Constants?.expoConfig?.extra?.eas?.projectId ?? Constants?.easConfig?.projectId;
+        if (!projectId) {
+            throw new Error('Project ID not found');
+        }
+        try {
+            const pushTokenString = (
+                await Notifications.getExpoPushTokenAsync({
+                    projectId,
+                })
+            ).data;
+            console.log(pushTokenString);
+
+            //Write the FCM token to database. 
+
+            const result = await client.mutate({
+                mutation: UPDATE_FCM_TOKEN,
+                variables: {
+                    email: (await getCurrentUser()).email,
+                    token: { [pushTokenString]: { pushTokenString, platform: Platform.OS, timestamp: Date.now() } },
+                },
+            });
+            console.log("FCM token updated in database:", result);
+            return pushTokenString;
+        } catch (error) {
+            throw error
+        }
+    } else {
+        throw new Error('Must use physical device for push notifications');
+    }
+}
+
+export { registerForPushNotificationsAsync };