added Feedback page, added braindump backend

hooks/firebase/useUpdateFeedback.ts

@@ -0,0 +1,65 @@
+import { useAuthContext } from "@/contexts/AuthContext";
+import { useMutation, useQueryClient } from "react-query";
+import firestore from "@react-native-firebase/firestore";
+import { IFeedback } from "@/contexts/FeedbackContext";
+
+interface UpdateFeedbackParams {
+  id: number;
+  changes: Partial<IFeedback>;
+}
+
+export const useUpdateFeedback = () => {
+  const { user: currentUser } = useAuthContext();
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationKey: ["updateFeedback"],
+    mutationFn: async ({ id, changes }: UpdateFeedbackParams) => {
+      try {
+        const snapshot = await firestore()
+          .collection("Feedbacks")
+          .where("id", "==", id)
+          .get();
+
+        if (snapshot.empty) {
+          throw new Error("Feedback not found");
+        }
+
+        const docId = snapshot.docs[0].id;
+        const feedbackData = snapshot.docs[0].data();
+
+        if (feedbackData.creatorId !== currentUser?.uid) {
+          throw new Error(
+            "Unauthorized: You can only update your own feedback"
+          );
+        }
+
+        await firestore()
+          .collection("Feedbacks")
+          .doc(docId)
+          .update({
+            ...changes,
+            updatedAt: firestore.FieldValue.serverTimestamp(),
+            lastModifiedBy: currentUser?.uid,
+          });
+
+        return {
+          id,
+          ...feedbackData,
+          ...changes,
+        };
+      } catch (e) {
+        console.error("Error updating feedback: ", e);
+        throw e;
+      }
+    },
+    onSuccess: (updatedFeedback) => {
+      queryClient.invalidateQueries("feedbacks");
+
+      queryClient.setQueryData(
+        ["feedback", updatedFeedback.id],
+        updatedFeedback
+      );
+    },
+  });
+};