Update reward destination model.

Sources/SubVTData/Model/App/ValidatorDetails.swift

@@ -1,5 +1,5 @@
 /**
- Returned by the validatod details service right after the initial subscription.
+ Returned by the validator details service right after the initial subscription.
  */
 public struct ValidatorDetails: Hashable {
     public private(set) var account: Account

Sources/SubVTData/Model/Substrate/RewardDestination.swift

@@ -1,52 +1,15 @@
-public enum RewardDestination: Hashable {
-    case account(accountId: AccountId)
-    case controller
-    case none
-    case staked
-    case stash
+public enum RewardDestinationType: String, Hashable, Codable {
+    case account = "Account"
+    case controller = "Controller"
+    case none = "None"
+    case staked = "Staked"
+    case stash = "Stash"
 }
 
-extension RewardDestination: Codable {
-    public init(from decoder: Decoder) throws {
-        let container = try decoder.singleValueContainer()
-        let value = try container.decode(String.self)
-        switch value {
-        case "Controller":
-            self = .controller
-        case "None":
-            self = .none
-        case "Staked":
-            self = .staked
-        case "Stash":
-            self = .stash
-        default: // account
-            let hex = value.replacingOccurrences(
-                of: "Account(",
-                with: ""
-            ).replacingOccurrences(
-                of: ")",
-                with: ""
-            )
-            self = .account(
-                accountId: AccountId(hex: hex)
-            )
-        }
-    }
-
-    public func encode(to encoder: Encoder) throws {
-        var container = encoder.singleValueContainer()
-        switch self {
-        case .account(let accountId):
-            let hex = accountId.toHex()
-            try container.encode("Account(\(hex))")
-        case .controller:
-            try container.encode("Controller")
-        case .none:
-            try container.encode("None")
-        case .staked:
-            try container.encode("Staked")
-        case .stash:
-            try container.encode("Stash")
-        }
-    }
+/**
+ Reward destination preference of a validator.
+ */
+public struct RewardDestination: Hashable, Codable {
+    public let destinationType: RewardDestinationType
+    public let destination: AccountId?
 }