Add AppLockSetupPINScreen. (#1930)

ElementX/Sources/Screens/AppLock/AppLockSetupPINScreen/AppLockSetupPINScreenModels.swift

@@ -0,0 +1,76 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+
+enum AppLockSetupPINScreenViewModelAction {
+    /// The user succeeded PIN entry.
+    case complete
+    /// The user cancelled PIN entry.
+    case cancel
+}
+
+enum AppLockSetupPINScreenMode {
+    /// Creating a new PIN.
+    case create
+    /// Confirming the new PIN.
+    case confirm
+    /// Unlocking with the current PIN.
+    case unlock
+}
+
+struct AppLockSetupPINScreenViewState: BindableState {
+    /// The current mode that the screen is in.
+    var mode: AppLockSetupPINScreenMode
+    
+    var title: String {
+        switch mode {
+        case .create: return L10n.screenAppLockSetupChoosePin
+        case .confirm: return L10n.screenAppLockSetupConfirmPin
+        case .unlock: return L10n.commonEnterYourPin
+        }
+    }
+    
+    var subtitle: String? {
+        switch mode {
+        case .create, .confirm: return L10n.screenAppLockSetupPinContext(InfoPlistReader.main.bundleDisplayName)
+        case .unlock: return nil
+        }
+    }
+    
+    var bindings: AppLockSetupPINScreenViewStateBindings
+}
+
+struct AppLockSetupPINScreenViewStateBindings {
+    var pinCode: String
+    var alertInfo: AlertInfo<AppLockSetupPINScreenAlertType>?
+}
+
+enum AppLockSetupPINScreenAlertType {
+    /// The user entered a weak PIN and it has been rejected.
+    case weakPIN
+    /// The user entered the wrong PIN when confirming the creation.
+    case pinMismatch
+    /// An error occurred setting the PIN code in the App Lock service.
+    case failedToSetPIN
+}
+
+enum AppLockSetupPINScreenViewAction {
+    /// Confirm the entered PIN.
+    case submitPINCode
+    /// Stop entering a PIN.
+    case cancel
+}