Add event deletion

hooks/firebase/useDeleteEvent.ts

@@ -0,0 +1,39 @@
+import {useMutation, useQueryClient} from "react-query";
+import firestore from "@react-native-firebase/firestore";
+
+export const useDeleteEvent = () => {
+    const queryClient = useQueryClient();
+
+    return useMutation({
+        mutationKey: ["deleteEvent"],
+        mutationFn: async ({eventId, docId}: { eventId?: string; docId?: string }) => {
+            try {
+                if (docId) {
+                    await firestore()
+                        .collection("Events")
+                        .doc(docId)
+                        .delete();
+                } else if (eventId) {
+                    const snapshot = await firestore()
+                        .collection("Events")
+                        .where("id", "==", eventId)
+                        .get();
+
+                    const doc = snapshot.docs[0];
+                    if (doc) {
+                        await doc.ref.delete();
+                    } else {
+                        console.warn("Event not found");
+                    }
+                } else {
+                    console.warn("No identifier provided");
+                }
+            } catch (e) {
+                console.error(e);
+            }
+        },
+        onSuccess: () => {
+            queryClient.invalidateQueries("events");
+        }
+    });
+};