fix: add /1000000 check to history (#2164)

Co-authored-by: Harrison Mendonça <harrisonmendonca@gmail.com>

Author: neocybereth

apps/namadillo/src/App/Transactions/TransactionCard.tsx

@@ -139,13 +139,69 @@ export const TransactionCard = ({
   const validators = useAtomValue(allValidatorsAtom);
   const validator = validators?.data?.find((v) => v.address === receiver);
 
-  const getBaseAmount = (): BigNumber | undefined => {
-    if (asset && txnInfo?.amount) {
-      if (isBondingOrUnbondingTransaction)
-        return toDisplayAmount(asset, txnInfo.amount);
-      if (isNamadaAsset(asset)) return txnInfo.amount;
-      return toDisplayAmount(asset, txnInfo.amount);
-    } else return undefined;
+  const getDisplayAmount = (): BigNumber => {
+    if (!txnInfo?.amount) {
+      return BigNumber(0);
+    }
+    if (!asset) {
+      return txnInfo.amount;
+    }
+
+    // This is a temporary hack b/c NAM amounts are mixed in nam and unam for indexer before 3.2.0
+    // Whenever the migrations are run and all transactions are in micro units we need to remove this
+    // before 3.2.0 -> mixed
+    // after 3.2.0 -> unam
+    const guessIsDisplayAmount = (): boolean => {
+      // Only check Namada tokens, not other chain tokens
+      if (!isNamadaAsset(asset)) {
+        return false;
+      }
+
+      // This is a fixed flag date that most operator have already upgraded to
+      // indexer 3.2.0, meaning all transactions after this time are safe
+      const timeFlag = new Date("2025-06-18T00:00:00").getTime() / 1000;
+      const txTimestamp = transactionTopLevel.timestamp;
+      if (txTimestamp && txTimestamp > timeFlag) {
+        return false;
+      }
+
+      // If the amount contains the float dot, like "1.000000", it's nam
+      const hasFloatAmount = (): boolean => {
+        try {
+          const stringData = transactionTopLevel.tx?.data;
+          const objData = stringData ? JSON.parse(stringData) : {};
+          return [...objData.sources, ...objData.targets].find(
+            ({ amount }: { amount: string }) => amount.includes(".")
+          );
+        } catch {
+          return false;
+        }
+      };
+      if (hasFloatAmount()) {
+        return true;
+      }
+
+      // if it's a huge amount, it should be unam
+      if (txnInfo.amount.gte(new BigNumber(1_000_000))) {
+        return false;
+      }
+
+      // if it's a small amount, it should be nam
+      if (txnInfo.amount.lte(new BigNumber(10))) {
+        return true;
+      }
+
+      // if has no more hints, just accept the data as it is
+      return false;
+    };
+
+    const isAlreadyDisplayAmount = guessIsDisplayAmount();
+    if (isAlreadyDisplayAmount) {
+      // Do not transform to display amount in case it was already saved as display amount
+      return txnInfo.amount;
+    }
+
+    return toDisplayAmount(asset, txnInfo.amount);
   };
 
   const renderKeplrIcon = (address: string): JSX.Element | null => {
@@ -171,7 +227,7 @@ export const TransactionCard = ({
     return "Transfer";
   };
 
-  const baseAmount = getBaseAmount();
+  const displayAmount = getDisplayAmount();
 
   return (
     <article
@@ -245,7 +301,7 @@ export const TransactionCard = ({
         </div>
         <TokenCurrency
           className="font-semibold text-white mt-1 ml-2"
-          amount={baseAmount ?? BigNumber(0)}
+          amount={displayAmount}
           symbol={asset?.symbol ?? ""}
         />
       </div>