Merge pull request #603 from PotLock/fix/excessive-rpc-calls

fixed calls to rpc when typing in campaign page

Author: aunali8812

src/common/blockchains/near-protocol/utils/validations.ts

@@ -4,14 +4,31 @@ import type { AccountId } from "@/common/types";
 
 import { nearRpc } from "../client";
 
-export const isNearAccountValid = async (account_id: AccountId) =>
-  account_id.length > 4
-    ? await nearRpc
-        .query<AccountView>({
-          request_type: "view_account",
-          finality: "final",
-          account_id,
-        })
-        .then(Boolean)
-        .catch(() => false)
-    : false;
+const accountValidationCache = new Map<string, boolean>();
+let lastValidationTimestamp = 0;
+const DEBOUNCE_MS = 300;
+
+export const isNearAccountValid = async (account_id: AccountId) => {
+  if (account_id.length <= 4) return false;
+
+  const cached = accountValidationCache.get(account_id);
+  if (cached !== undefined) return cached;
+
+  // Debounce: wait before making RPC call, skip if a newer call arrives
+  const timestamp = Date.now();
+  lastValidationTimestamp = timestamp;
+  await new Promise((resolve) => setTimeout(resolve, DEBOUNCE_MS));
+  if (lastValidationTimestamp !== timestamp) return false;
+
+  const isValid = await nearRpc
+    .query<AccountView>({
+      request_type: "view_account",
+      finality: "final",
+      account_id,
+    })
+    .then(Boolean)
+    .catch(() => false);
+
+  accountValidationCache.set(account_id, isValid);
+  return isValid;
+};