allow operations to decode gas, or storage independently

Sources/KukaiCoreSwift/Models/Operation/Operation.swift

@@ -62,22 +62,13 @@ public class Operation: Codable {
 			source = try container.decodeIfPresent(String.self, forKey: .source)
 			counter = try container.decodeIfPresent(String.self, forKey: .counter)
 
+			// When coming from Wallet Connect, operations may include suggested gas, storage or fee
+			// Each one is optional, and will be used later on as 
+			let storage = Int(try container.decodeIfPresent(String.self, forKey: .storageLimit) ?? "0") ?? 0
+			let gas = Int(try container.decodeIfPresent(String.self, forKey: .gasLimit) ?? "0") ?? 0
+			let feeString = try container.decodeIfPresent(String.self, forKey: .fee) ?? "0"
 
-			// When we encode, we encode all properties. But when coming from beacon it will sometimes supply a suggestion for gas and storage, but will not include a fee
-			// When we have all, just encode
-			if let storageInt = Int(try container.decodeIfPresent(String.self, forKey: .storageLimit) ?? ""),
-			   let gasInt = Int(try container.decodeIfPresent(String.self, forKey: .gasLimit) ?? ""),
-			   let feeString = try container.decodeIfPresent(String.self, forKey: .fee) {
-				operationFees = OperationFees(transactionFee: XTZAmount(fromRpcAmount: feeString) ?? XTZAmount.zero(), gasLimit: gasInt, storageLimit: storageInt)
-			}
-
-			// When we have gas and storage suggestions, encode those and compute a fee
-			else if let storageInt = Int(try container.decodeIfPresent(String.self, forKey: .storageLimit) ?? ""),
-					let gasInt = Int(try container.decodeIfPresent(String.self, forKey: .gasLimit) ?? "") {
-
-				let fee = XTZAmount.zero() // Fee will need to be computed outside. Requires network calls to see current constants and forging the JSON. Can't be done here
-				operationFees = OperationFees(transactionFee: fee, gasLimit: gasInt, storageLimit: storageInt)
-			}
+			operationFees = OperationFees(transactionFee: XTZAmount(fromRpcAmount: feeString) ?? XTZAmount.zero(), gasLimit: gas, storageLimit: storage)
 
 		} else {
 			source = nil