Merge pull request #620 from thanhvh2205/datum-conversion

Fix datum conversion in 'fromLedgerTxOuts' when using 'fromAlonzoTxOut'

cardano-api/internal/Cardano/Api/Tx/Body.hs

@@ -2056,8 +2056,10 @@ fromLedgerTxOuts sbe body scriptdata =
     ShelleyBasedEraAlonzo ->
       [ fromAlonzoTxOut
           AlonzoEraOnwardsAlonzo
+          txdatums
           txout
-      | txout <- toList (body ^. L.outputsTxBodyL)
+      | let txdatums = selectTxDatums scriptdata
+      , txout <- toList (body ^. L.outputsTxBodyL)
       ]
     ShelleyBasedEraBabbage ->
       [ fromBabbageTxOut
@@ -2085,18 +2087,31 @@ selectTxDatums (TxBodyScriptData _ (Alonzo.TxDats' datums) _) = datums
 fromAlonzoTxOut
   :: ()
   => AlonzoEraOnwards era
+  -> Map (L.DataHash StandardCrypto) (L.Data ledgerera)
   -> L.TxOut (ShelleyLedgerEra era)
   -> TxOut CtxTx era
-fromAlonzoTxOut w txOut =
+fromAlonzoTxOut w txdatums txOut =
   alonzoEraOnwardsConstraints w $
     TxOut
       (fromShelleyAddr shelleyBasedEra (txOut ^. L.addrTxOutL))
       (TxOutValueShelleyBased sbe (txOut ^. L.valueTxOutL))
-      (fromAlonzoTxOutDatumHash w (txOut ^. L.dataHashTxOutL))
+      (fromAlonzoTxOutDatum w txdatums (txOut ^. L.dataHashTxOutL))
       ReferenceScriptNone
  where
   sbe = alonzoEraOnwardsToShelleyBasedEra w
 
+fromAlonzoTxOutDatum
+  :: ()
+  => AlonzoEraOnwards era
+  -> Map (L.DataHash StandardCrypto) (L.Data ledgerera)
+  -> StrictMaybe (L.DataHash StandardCrypto)
+  -> TxOutDatum CtxTx era
+fromAlonzoTxOutDatum w txdatums = \case
+  SNothing -> TxOutDatumNone
+  SJust dh
+    | Just d <- Map.lookup dh txdatums -> TxOutDatumInTx' w (ScriptDataHash dh) (fromAlonzoData d)
+    | otherwise -> TxOutDatumHash w (ScriptDataHash dh)
+
 fromBabbageTxOut
   :: forall era
    . ()