Settings about section (#1041)

* Fixes #1011 - Add legal information screen in settings, move all settings related screens under Source/Screen/Settings
* Fix warnings after sliding sync api change

ElementX/Sources/Screens/Settings/AnalyticsSettingsScreen/AnalyticsSettingsScreenCoordinator.swift

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+//
+// 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 Combine
+import SwiftUI
+
+final class AnalyticsSettingsScreenCoordinator: CoordinatorProtocol {
+    private let viewModel: AnalyticsSettingsScreenViewModel
+    
+    init() {
+        viewModel = AnalyticsSettingsScreenViewModel()
+    }
+    
+    func toPresentable() -> AnyView {
+        AnyView(AnalyticsSettingsScreen(context: viewModel.context))
+    }
+}

ElementX/Sources/Screens/Settings/AnalyticsSettingsScreen/AnalyticsSettingsScreenModels.swift

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+//
+// 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
+
+struct AnalyticsSettingsScreenViewState: BindableState {
+    /// Attributed strings created from localized HTML.
+    let strings: AnalyticsSettingsScreenStrings
+    var bindings: AnalyticsSettingsScreenViewStateBindings
+}
+
+struct AnalyticsSettingsScreenViewStateBindings {
+    var enableAnalytics: Bool
+}
+
+enum AnalyticsSettingsScreenViewAction {
+    case toggleAnalytics
+}
+
+struct AnalyticsSettingsScreenStrings {
+    let sectionFooter: AttributedString
+    
+    init(termsURL: URL) {
+        let content = AttributedString(L10n.screenAnalyticsSettingsHelpUsImprove(InfoPlistReader.main.bundleDisplayName))
+        // Create the 'read terms' with a placeholder.
+        let linkPlaceholder = "{link}"
+        var readTerms = AttributedString(L10n.screenAnalyticsSettingsReadTerms(linkPlaceholder))
+        readTerms.replace(linkPlaceholder,
+                          with: L10n.screenAnalyticsSettingsReadTermsContentLink,
+                          asLinkTo: termsURL)
+        sectionFooter = content + "\n\n" + readTerms
+    }
+}

ElementX/Sources/Screens/Settings/AnalyticsSettingsScreen/AnalyticsSettingsScreenViewModel.swift

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+//
+// 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 Combine
+import SwiftUI
+
+typealias AnalyticsSettingsScreenViewModelType = StateStoreViewModel<AnalyticsSettingsScreenViewState, AnalyticsSettingsScreenViewAction>
+
+class AnalyticsSettingsScreenViewModel: AnalyticsSettingsScreenViewModelType, AnalyticsSettingsScreenViewModelProtocol {
+    init() {
+        let strings = AnalyticsSettingsScreenStrings(termsURL: ServiceLocator.shared.settings.analyticsConfiguration.termsURL)
+        let bindings = AnalyticsSettingsScreenViewStateBindings(enableAnalytics: ServiceLocator.shared.analytics.isEnabled)
+        let state = AnalyticsSettingsScreenViewState(strings: strings, bindings: bindings)
+        
+        super.init(initialViewState: state)
+        
+        ServiceLocator.shared.settings.$analyticsConsentState
+            .map { $0 == .optedIn }
+            .weakAssign(to: \.state.bindings.enableAnalytics, on: self)
+            .store(in: &cancellables)
+    }
+    
+    override func process(viewAction: AnalyticsSettingsScreenViewAction) {
+        switch viewAction {
+        case .toggleAnalytics:
+            if ServiceLocator.shared.analytics.isEnabled {
+                ServiceLocator.shared.analytics.optOut()
+            } else {
+                ServiceLocator.shared.analytics.optIn()
+            }
+        }
+    }
+}

ElementX/Sources/Screens/Settings/AnalyticsSettingsScreen/AnalyticsSettingsScreenViewModelProtocol.swift

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+//
+// 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 Combine
+
+@MainActor
+protocol AnalyticsSettingsScreenViewModelProtocol {
+    var context: AnalyticsSettingsScreenViewModelType.Context { get }
+}

ElementX/Sources/Screens/Settings/AnalyticsSettingsScreen/View/AnalyticsSettingsScreen.swift

@@ -0,0 +1,56 @@
+//
+// 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 SwiftUI
+
+struct AnalyticsSettingsScreen: View {
+    @ObservedObject var context: AnalyticsSettingsScreenViewModel.Context
+    
+    var body: some View {
+        Form {
+            analyticsSection
+        }
+        .compoundForm()
+        .navigationTitle(L10n.commonAnalytics)
+        .navigationBarTitleDisplayMode(.inline)
+    }
+    
+    var analyticsSection: some View {
+        Section {
+            Toggle(isOn: $context.enableAnalytics) {
+                Label(L10n.screenAnalyticsSettingsShareData, systemImage: "chart.bar")
+            }
+            .toggleStyle(.compoundForm)
+            .onChange(of: context.enableAnalytics) { _ in
+                context.send(viewAction: .toggleAnalytics)
+            }
+        } footer: {
+            Text(context.viewState.strings.sectionFooter)
+                .compoundFormSectionFooter()
+                .tint(.compound.textLinkExternal)
+        }
+        .compoundFormSection()
+    }
+}
+
+// MARK: - Previews
+
+struct AnalyticsSettingsScreen_Previews: PreviewProvider {
+    static var previews: some View {
+        let viewModel = AnalyticsSettingsScreenViewModel()
+        AnalyticsSettingsScreen(context: viewModel.context)
+    }
+}