Add AnalyticsPrompt to SwiftUI target and replace old UIAlertController.

RiotSwiftUI/Modules/AnalyticsPrompt/AnalyticsPromptModels.swift

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+// File created from SimpleUserProfileExample
+// $ createScreen.sh AnalyticsPrompt AnalyticsPrompt
+// 
+// Copyright 2021 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
+
+// The state is never modified so this is unnecessary.
+enum AnalyticsPromptStateAction { }
+
+enum AnalyticsPromptViewAction {
+    /// Enable analytics.
+    case enable
+    /// Disable analytics.
+    case disable
+    /// Open the service terms link.
+    case openTermsURL
+}
+
+enum AnalyticsPromptViewModelResult {
+    /// Enable analytics.
+    case enable
+    /// Disable analytics.
+    case disable
+}
+
+struct AnalyticsPromptViewState: BindableState {
+    /// The type of prompt to display.
+    let promptType: AnalyticsPromptType
+    /// The app's bundle display name.
+    let appDisplayName: String
+}
+
+enum AnalyticsPromptType {
+    case newUser
+    case upgrade
+}
+
+extension AnalyticsPromptType {
+    var description: String {
+        switch self {
+        case .newUser:
+            return VectorL10n.analyticsPromptDescriptionNewUser
+        case .upgrade:
+            return VectorL10n.analyticsPromptDescriptionUpgrade
+        }
+    }
+    
+    var termsStrings: (String, String, String) {
+        switch self {
+        case .newUser:
+            return (VectorL10n.analyticsPromptTermsStartNewUser,
+                    VectorL10n.analyticsPromptTermsLinkNewUser,
+                    VectorL10n.analyticsPromptTermsEndNewUser)
+        case .upgrade:
+            return (VectorL10n.analyticsPromptTermsStartUpgrade,
+                    VectorL10n.analyticsPromptTermsLinkUpgrade,
+                    VectorL10n.analyticsPromptTermsEndUpgrade)
+        }
+    }
+    
+    var enableButtonTitle: String {
+        switch self {
+        case .newUser:
+            return VectorL10n.enable
+        case .upgrade:
+            return VectorL10n.analyticsPromptYes
+        }
+    }
+    
+    var disableButtonTitle: String {
+        switch self {
+        case .newUser:
+            return VectorL10n.cancel
+        case .upgrade:
+            return VectorL10n.analyticsPromptStop
+        }
+    }
+}
+
+extension AnalyticsPromptType: CaseIterable { }
+
+extension AnalyticsPromptType: Identifiable {
+    var id: Self { self }
+}