REFACTOR. provide all required values for ProtocolParameters in the instantiation step

Author: daehan-koreapool

pycardano/backend/ogmios.py

@@ -151,6 +151,7 @@ def _fetch_protocol_param(self) -> ProtocolParameters:
             extra_entropy=result.get("extraEntropy", ""),
             protocol_major_version=result["protocolVersion"]["major"],
             protocol_minor_version=result["protocolVersion"]["minor"],
+            min_utxo=self._get_min_utxo(),
             min_pool_cost=result["minPoolCost"],
             price_mem=self._fraction_parser(result["prices"]["memory"]),
             price_step=self._fraction_parser(result["prices"]["steps"]),
@@ -165,17 +166,24 @@ def _fetch_protocol_param(self) -> ProtocolParameters:
                 "coinsPerUtxoWord", ALONZO_COINS_PER_UTXO_WORD
             ),
             coins_per_utxo_byte=result.get("coinsPerUtxoByte", 0),
-            cost_models=result.get("costModels", {}),
+            cost_models=self._parse_cost_models(result),
         )
 
-        if "plutus:v1" in param.cost_models:
-            param.cost_models["PlutusV1"] = param.cost_models.pop("plutus:v1")
-        if "plutus:v2" in param.cost_models:
-            param.cost_models["PlutusV2"] = param.cost_models.pop("plutus:v2")
+        return param
 
+    def _get_min_utxo(self) -> int:
         result = self._query_genesis_config()
-        param.min_utxo = result["protocolParameters"]["minUtxoValue"]
-        return param
+        return result["protocolParameters"]["minUtxoValue"]
+
+    def _parse_cost_models(self, ogmios_result: JSON) -> Dict[str, Dict[str, int]]:
+        ogmios_cost_models = ogmios_result.get("costModels", {})
+
+        cost_models = {}
+        if "plutus:v1" in ogmios_cost_models:
+            cost_models["PlutusV1"] = ogmios_cost_models["plutus:v1"].copy()
+        if "plutus:v2" in ogmios_cost_models:
+            cost_models["PlutusV2"] = ogmios_cost_models["plutus:v2"].copy()
+        return cost_models
 
     @property
     def genesis_param(self) -> GenesisParameters: