system messages

app/hooks/useUpdateMessage.ts

@@ -0,0 +1,20 @@
+import { useEffect } from "react";
+import { usePublicKey } from "../providers/AccountProvider/usePublicKey";
+import { APP_VERSION, RELEASE_NOTICE } from "../version";
+import { useSendSystemMessage } from "../providers/SystemAccountsProvider/useSendSystemMessage";
+
+export function useUpdateMessage() {
+    const publicKey = usePublicKey();
+    const lastNoticeVersion = localStorage.getItem("lastNoticeVersion") || "0.0.0";
+    const send = useSendSystemMessage("updates");
+
+    useEffect(() => {
+        if(publicKey == ""){
+            return;
+        }
+        if(lastNoticeVersion !== APP_VERSION){
+            send(RELEASE_NOTICE);
+            localStorage.setItem("lastNoticeVersion", APP_VERSION);
+        }
+    }, [lastNoticeVersion, publicKey]);
+}