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resources/js/hooks/useRateLimitHelper.ts

@@ -0,0 +1,35 @@
+import { useMemo } from 'react';
+
+type RateBucket = 'coupon' | 'voucher';
+
+export function useRateLimitHelper(bucket: RateBucket) {
+  return useMemo(() => {
+    const key = (code: string) => `${bucket}:${code.toUpperCase()}`;
+
+    return {
+      isLimited: (code: string): boolean => {
+        const item = localStorage.getItem(key(code));
+        if (!item) return false;
+        const parsed = JSON.parse(item) as { attempts: number; ts: number };
+        const ageSeconds = (Date.now() - parsed.ts) / 1000;
+        if (ageSeconds > 300) {
+          localStorage.removeItem(key(code));
+          return false;
+        }
+        return parsed.attempts >= 3;
+      },
+      bump: (code: string): void => {
+        const item = localStorage.getItem(key(code));
+        if (!item) {
+          localStorage.setItem(key(code), JSON.stringify({ attempts: 1, ts: Date.now() }));
+          return;
+        }
+        const parsed = JSON.parse(item) as { attempts: number; ts: number };
+        localStorage.setItem(key(code), JSON.stringify({ attempts: (parsed.attempts || 0) + 1, ts: Date.now() }));
+      },
+      clear: (code: string): void => {
+        localStorage.removeItem(key(code));
+      },
+    };
+  }, [bucket]);
+}