refactor: pgx supports big.Int type conversion internally

internal/store/store.go

@@ -2,6 +2,7 @@ package store
 
 import (
 	"context"
+	"math/big"
 
 	"github.com/grassrootseconomics/cic-custodial/pkg/enum"
 )
@@ -26,7 +27,7 @@ type (
 		Data          string
 		GasLimit      uint64
 		TransferValue uint64
-		GasPrice      uint64
+		GasPrice      *big.Int
 		Nonce         uint64
 	}
 

internal/tasker/task/account_refill_gas.go

@@ -149,7 +149,7 @@ func AccountRefillGasProcessor(cu *custodial.Custodial) func(context.Context, *a
 			TxHash:     builtTx.Hash().Hex(),
 			From:       cu.SystemPublicKey,
 			Data:       hexutil.Encode(builtTx.Data()),
-			GasPrice:   builtTx.GasPrice().Uint64(),
+			GasPrice:   builtTx.GasPrice(),
 			GasLimit:   builtTx.Gas(),
 			Nonce:      builtTx.Nonce(),
 		})

internal/tasker/task/account_register.go

@@ -89,7 +89,7 @@ func AccountRegisterOnChainProcessor(cu *custodial.Custodial) func(context.Conte
 			TxHash:     builtTx.Hash().Hex(),
 			From:       cu.SystemPublicKey,
 			Data:       hexutil.Encode(builtTx.Data()),
-			GasPrice:   builtTx.GasPrice().Uint64(),
+			GasPrice:   builtTx.GasPrice(),
 			GasLimit:   builtTx.Gas(),
 			Nonce:      builtTx.Nonce(),
 		})

internal/tasker/task/sign_transfer.go

@@ -96,7 +96,7 @@ func SignTransfer(cu *custodial.Custodial) func(context.Context, *asynq.Task) er
 			TxHash:        builtTx.Hash().Hex(),
 			From:          payload.From,
 			Data:          hexutil.Encode(builtTx.Data()),
-			GasPrice:      builtTx.GasPrice().Uint64(),
+			GasPrice:      builtTx.GasPrice(),
 			GasLimit:      builtTx.Gas(),
 			TransferValue: payload.Amount,
 			Nonce:         builtTx.Nonce(),