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feat: add transaction lock for blockchain requests #652

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Merged
Nitya-003 merged 1 commit into from
Jul 6, 2026
Merged

feat: add transaction lock for blockchain requests #652

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15 changes: 13 additions & 2 deletions frontend/src/app/update-batch/page.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ const UpdateBatch: React.FC = () => {
});
const [isUpdating, setIsUpdating] = useState(false);
const [isRequestingIoT, setIsRequestingIoT] = useState(false);
const [transactionLocked, setTransactionLocked] = useState(false);
const [transactionDetails, setTransactionDetails] = useState<{
hash: string;
status: 'Confirmed' | 'Pending';
Expand Down Expand Up @@ -65,7 +66,10 @@ const UpdateBatch: React.FC = () => {

const handleUpdate = async (e: React.FormEvent<HTMLFormElement>) => {
e.preventDefault();
if (!batch) return;
if (!batch) {
setTransactionLocked(false);
return;
}

// RBAC Check: Verify user can update to this stage
if (!canUpdateToStage(updateData.stage)) {
Expand Down Expand Up @@ -111,6 +115,12 @@ const UpdateBatch: React.FC = () => {
};

const handleRequestIoTVerification = async () => {
if (transactionLocked) {
toast.error("Transaction already in progress.");
return;
}

setTransactionLocked(true);
if (!batch || !batch.batchId) {
toast.error('Please search for a batch first');
return;
Expand Down Expand Up @@ -178,6 +188,7 @@ const UpdateBatch: React.FC = () => {
toast.error('Failed to request IoT verification. Please try again.');
}finally {
setIsRequestingIoT(false);
setTransactionLocked(false);
}
};

Expand Down Expand Up @@ -471,7 +482,7 @@ const handleCopyTransactionHash = async () => {
<button
type="button"
onClick={handleRequestIoTVerification}
disabled={isRequestingIoT || !batch.batchId}
disabled={isRequestingIoT || transactionLocked}
className={`px-6 py-3 rounded-lg font-medium transition-all duration-200 flex items-center space-x-2 ${
isRequestingIoT || !batch.batchId
? 'bg-gray-400 cursor-not-allowed'
Expand Down
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