Update for network layer:

- `GasPrice`
- `GetTransactionCount`

Author: yaroslavyaroslav

Sources/web3swift/API/Web3+APIMethod.swift

@@ -102,7 +102,9 @@ extension APIRequest {
         case .getBalance: return BigUInt.self
         case .getBlockByHash: return Block.self
         case .getBlockByNumber: return Block.self
+        case .gasPrice: return BigUInt.self
         case .feeHistory: return Web3.Oracle.FeeHistory.self
+        case .getTransactionCount: return UInt.self
         default: return String.self
         }
     }

Sources/web3swift/Promises/Promise+Web3+Eth+GetGasPrice.swift

@@ -10,16 +10,7 @@ import BigInt
 
 extension web3.Eth {
     public func gasPrice() async throws -> BigUInt {
-        let request = JSONRPCRequestFabric.prepareRequest(.gasPrice, parameters: [])
-        let response = try await web3.dispatch(request)
-
-        guard let value: BigUInt = response.getValue() else {
-            if response.error != nil {
-                throw Web3Error.nodeError(desc: response.error!.message)
-            }
-            throw Web3Error.nodeError(desc: "Invalid value from Ethereum node")
-        }
-        return value
-
+        let response: APIResponse<BigUInt> = try await APIRequest.sendRequest(with: self.provider, for: .gasPrice)
+        return response.result
     }
 }

Sources/web3swift/Promises/Promise+Web3+Eth+GetTransactionCount.swift

@@ -5,25 +5,16 @@
 //
 
 import Foundation
-import BigInt
 
 
 extension web3.Eth {
-    public func getTransactionCount(for address: EthereumAddress, onBlock: String = "latest") async throws -> BigUInt {
-        let addr = address.address
-        return try await getTransactionCount(address: addr, onBlock: onBlock)
+    public func getTransactionCount(for address: EthereumAddress, onBlock: BlockNumber) async throws -> UInt {
+        try await getTransactionCount(address: address.address, onBlock: onBlock)
     }
 
-    public func getTransactionCount(address: String, onBlock: String = "latest") async throws -> BigUInt {
-        let request = JSONRPCRequestFabric.prepareRequest(.getTransactionCount, parameters: [address.lowercased(), onBlock])
-        let response = try await web3.dispatch(request)
-
-        guard let value: BigUInt = response.getValue() else {
-            if response.error != nil {
-                throw Web3Error.nodeError(desc: response.error!.message)
-            }
-            throw Web3Error.nodeError(desc: "Invalid value from Ethereum node")
-        }
-        return value
+    public func getTransactionCount(address: Address, onBlock: BlockNumber) async throws -> UInt {
+        let requestCall: APIRequest = .getTransactionCount(address, onBlock)
+        let response: APIResponse<UInt> = APIRequest.sendRequest(with: self.provider, for: requestCall)
+        return response.result
     }
 }