birthday through qr, deleteFam function

hooks/firebase/useDeleteFamily.ts

@@ -0,0 +1,32 @@
+import { useAuthContext } from "@/contexts/AuthContext";
+import { useMutation } from "@tanstack/react-query";
+import functions from '@react-native-firebase/functions';
+import { Alert } from 'react-native';
+
+export const useDeleteFamily = () => {
+    const { user } = useAuthContext();
+
+    return useMutation({
+        mutationKey: ["deleteFamily"],
+        mutationFn: async ({ familyId }: { familyId: string }) => {
+            if (!user) {
+                throw new Error('User must be logged in');
+            }
+
+            try {
+                const deleteFamilyFunction = functions().httpsCallable('deleteFamily');
+                const result = await deleteFamilyFunction({ familyId });
+                return result.data;
+            } catch (error: any) {
+                if (error.code === 'permission-denied') {
+                    Alert.alert('Error', 'Only parents can delete families');
+                } else if (error.code === 'unauthenticated') {
+                    Alert.alert('Error', 'Please log in to perform this action');
+                } else {
+                    Alert.alert('Error', 'Failed to delete family. Please try again.');
+                }
+                throw error;
+            }
+        }
+    });
+};