Onboarding flow coordinator and FTUE changes (#2578)

Fixes #2595, fixes #2594, fixes #2593, fixes #2592, fixes #2591

ElementX/Sources/Screens/Onboarding/AnalyticsPromptScreen/AnalyticsPromptScreenViewModel.swift

@@ -0,0 +1,45 @@
+//
+// 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 Combine
+import SwiftUI
+
+typealias AnalyticsPromptScreenViewModelType = StateStoreViewModel<AnalyticsPromptScreenViewState, AnalyticsPromptScreenViewAction>
+
+class AnalyticsPromptScreenViewModel: AnalyticsPromptScreenViewModelType, AnalyticsPromptScreenViewModelProtocol {
+    private var actionsSubject: PassthroughSubject<AnalyticsPromptScreenViewModelAction, Never> = .init()
+    
+    var actions: AnyPublisher<AnalyticsPromptScreenViewModelAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+    
+    /// Initialize a view model with the specified prompt type and app display name.
+    init(termsURL: URL) {
+        let promptStrings = AnalyticsPromptScreenStrings(termsURL: termsURL)
+        super.init(initialViewState: AnalyticsPromptScreenViewState(strings: promptStrings))
+    }
+
+    // MARK: - Public
+    
+    override func process(viewAction: AnalyticsPromptScreenViewAction) {
+        switch viewAction {
+        case .enable:
+            actionsSubject.send(.enable)
+        case .disable:
+            actionsSubject.send(.disable)
+        }
+    }
+}