In preparation of FTUE changes... (#2556)

* Remove the welcome screen

* Allow the UserSessionFlowCoordinator to control the whole app hierarchy, not only its splitView

* Start using the new verification state listener

* Rename Onboarding to AuthenticationStart in preparation for the new OnboardingFlowCoordinator; update snapshots and tests

* Make the AuthenticationCoordinator a proper FlowCoordinator

* Add some padding around the authentication start screen report a problem button

* Bump the RustSDK to v1.1.49

* Only add bottom padding on the authentication start screen report a problem button

ElementX/Sources/Screens/AuthenticationStartScreen/AuthenticationStartScreenCoordinator.swift

@@ -0,0 +1,53 @@
+//
+// 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 AuthenticationStartScreenCoordinator: CoordinatorProtocol {
+    private var viewModel: AuthenticationStartScreenViewModelProtocol
+    private let actionsSubject: PassthroughSubject<AuthenticationStartScreenCoordinatorAction, Never> = .init()
+    private var cancellables = Set<AnyCancellable>()
+    
+    var actions: AnyPublisher<AuthenticationStartScreenCoordinatorAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+    
+    init() {
+        viewModel = AuthenticationStartScreenViewModel()
+    }
+    
+    // MARK: - Public
+    
+    func start() {
+        viewModel.actions
+            .sink { [weak self] action in
+                guard let self else { return }
+                
+                switch action {
+                case .login:
+                    actionsSubject.send(.login)
+                case .reportProblem:
+                    actionsSubject.send(.reportProblem)
+                }
+            }
+            .store(in: &cancellables)
+    }
+    
+    func toPresentable() -> AnyView {
+        AnyView(AuthenticationStartScreen(context: viewModel.context))
+    }
+}

ElementX/Sources/Screens/AuthenticationStartScreen/AuthenticationStartScreenModels.swift

@@ -0,0 +1,36 @@
+//
+// 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
+
+// MARK: - Coordinator
+
+enum AuthenticationStartScreenCoordinatorAction {
+    case login
+    case reportProblem
+}
+
+enum AuthenticationStartScreenViewModelAction {
+    case login
+    case reportProblem
+}
+
+struct AuthenticationStartScreenViewState: BindableState { }
+
+enum AuthenticationStartScreenViewAction {
+    case login
+    case reportProblem
+}

ElementX/Sources/Screens/AuthenticationStartScreen/AuthenticationStartScreenViewModel.swift

@@ -0,0 +1,41 @@
+//
+// 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 AuthenticationStartScreenViewModelType = StateStoreViewModel<AuthenticationStartScreenViewState, AuthenticationStartScreenViewAction>
+
+class AuthenticationStartScreenViewModel: AuthenticationStartScreenViewModelType, AuthenticationStartScreenViewModelProtocol {
+    private var actionsSubject: PassthroughSubject<AuthenticationStartScreenViewModelAction, Never> = .init()
+    
+    var actions: AnyPublisher<AuthenticationStartScreenViewModelAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+
+    init() {
+        super.init(initialViewState: AuthenticationStartScreenViewState())
+    }
+
+    override func process(viewAction: AuthenticationStartScreenViewAction) {
+        switch viewAction {
+        case .login:
+            actionsSubject.send(.login)
+        case .reportProblem:
+            actionsSubject.send(.reportProblem)
+        }
+    }
+}

ElementX/Sources/Screens/AuthenticationStartScreen/AuthenticationStartScreenViewModelProtocol.swift

@@ -0,0 +1,23 @@
+//
+// 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 AuthenticationStartScreenViewModelProtocol {
+    var actions: AnyPublisher<AuthenticationStartScreenViewModelAction, Never> { get }
+    var context: AuthenticationStartScreenViewModelType.Context { get }
+}

ElementX/Sources/Screens/AuthenticationStartScreen/View/AuthenticationStartLogo.swift

@@ -0,0 +1,98 @@
+//
+// Copyright 2023 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
+
+/// The app's logo styled to fit on various launch pages.
+struct AuthenticationStartLogo: View {
+    @Environment(\.colorScheme) private var colorScheme
+    
+    /// Set to `true` when using on top of `Asset.Images.launchBackground`
+    let isOnGradient: Bool
+    
+    /// Extra padding needed to avoid cropping the shadows.
+    private let extra: CGFloat = 64
+    /// The shape that the logo is composed on top of.
+    private let outerShape = RoundedRectangle(cornerRadius: 44)
+    private let outerShapeShadowColor = Color(red: 0.11, green: 0.11, blue: 0.13)
+    private var isLight: Bool { colorScheme == .light }
+    
+    var body: some View {
+        Image(asset: Asset.Images.appLogo)
+            .background {
+                Circle()
+                    .inset(by: 1)
+                    .shadow(color: .black.opacity(!isLight && isOnGradient ? 0.3 : 0.4),
+                            radius: 12.57143,
+                            y: 6.28571)
+                
+                Circle()
+                    .inset(by: 1)
+                    .shadow(color: .black.opacity(0.5),
+                            radius: 12.57143,
+                            y: 6.28571)
+                    .blendMode(.overlay)
+            }
+            .padding(24)
+            .background {
+                Color.white
+                    .opacity(isLight ? 0.23 : isOnGradient ? 0.05 : 0.13)
+            }
+            .clipShape(outerShape)
+            .overlay {
+                outerShape
+                    .inset(by: 0.25)
+                    .stroke(.white.opacity(isLight ? 1 : isOnGradient ? 0.9 : 0.25), lineWidth: 0.5)
+                    .blendMode(isLight ? .normal : .overlay)
+            }
+            .padding(extra)
+            .background {
+                ZStack {
+                    if !isLight, isOnGradient {
+                        outerShape
+                            .inset(by: 1)
+                            .padding(extra)
+                            .shadow(color: .black.opacity(0.5),
+                                    radius: 32.91666,
+                                    y: 1.05333)
+                    } else {
+                        outerShape
+                            .inset(by: 1)
+                            .padding(extra)
+                            .shadow(color: outerShapeShadowColor.opacity(isLight ? 0.23 : 0.08),
+                                    radius: 16,
+                                    y: 8)
+                        
+                        outerShape
+                            .inset(by: 1)
+                            .padding(extra)
+                            .shadow(color: outerShapeShadowColor.opacity(0.5),
+                                    radius: 16,
+                                    y: 8)
+                            .blendMode(.overlay)
+                    }
+                }
+                .mask {
+                    outerShape
+                        .inset(by: -extra / 2)
+                        .stroke(lineWidth: extra)
+                        .padding(extra)
+                }
+            }
+            .padding(-extra)
+            .accessibilityHidden(true)
+    }
+}

ElementX/Sources/Screens/AuthenticationStartScreen/View/AuthenticationStartScreen.swift

@@ -0,0 +1,117 @@
+//
+// 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
+
+/// The screen shown at the beginning of the onboarding flow.
+struct AuthenticationStartScreen: View {
+    @Environment(\.verticalSizeClass) private var verticalSizeClass
+    
+    @ObservedObject var context: AuthenticationStartScreenViewModel.Context
+    
+    var body: some View {
+        GeometryReader { geometry in
+            VStack(alignment: .leading, spacing: 0) {
+                Spacer()
+                    .frame(height: UIConstants.spacerHeight(in: geometry))
+                
+                content
+                    .frame(width: geometry.size.width)
+                    .accessibilityIdentifier(A11yIdentifiers.authenticationStartScreen.hidden)
+                
+                buttons
+                    .frame(width: geometry.size.width)
+                    .padding(.bottom, UIConstants.actionButtonBottomPadding)
+                    .padding(.bottom, geometry.safeAreaInsets.bottom > 0 ? 0 : 16)
+                    .padding(.top, 8)
+                
+                Spacer()
+                    .frame(height: UIConstants.spacerHeight(in: geometry))
+            }
+            .frame(maxHeight: .infinity)
+            .safeAreaInset(edge: .bottom) {
+                Button {
+                    context.send(viewAction: .reportProblem)
+                } label: {
+                    Text(L10n.commonReportAProblem)
+                        .font(.compound.bodySM)
+                        .foregroundColor(.compound.textSecondary)
+                        .padding(.bottom)
+                }
+                .frame(width: geometry.size.width)
+            }
+        }
+        .navigationBarHidden(true)
+        .background {
+            AuthenticationStartScreenBackgroundImage()
+        }
+    }
+    
+    var content: some View {
+        VStack(spacing: 0) {
+            Spacer()
+            
+            if verticalSizeClass == .regular {
+                Spacer()
+                
+                AuthenticationStartLogo(isOnGradient: true)
+            }
+            
+            Spacer()
+            
+            VStack(spacing: 8) {
+                Text(L10n.screenOnboardingWelcomeTitle)
+                    .font(.compound.headingLGBold)
+                    .foregroundColor(.compound.textPrimary)
+                    .multilineTextAlignment(.center)
+                Text(L10n.screenOnboardingWelcomeMessage)
+                    .font(.compound.bodyLG)
+                    .foregroundColor(.compound.textSecondary)
+                    .multilineTextAlignment(.center)
+            }
+            .padding()
+            .fixedSize(horizontal: false, vertical: true)
+            
+            Spacer()
+        }
+        .padding(.bottom)
+        .padding(.horizontal, 16)
+        .readableFrame()
+    }
+    
+    /// The main action buttons.
+    var buttons: some View {
+        VStack(spacing: 12) {
+            Button { context.send(viewAction: .login) } label: {
+                Text(L10n.actionContinue)
+            }
+            .buttonStyle(.compound(.primary))
+            .accessibilityIdentifier(A11yIdentifiers.authenticationStartScreen.signIn)
+        }
+        .padding(.horizontal, verticalSizeClass == .compact ? 128 : 24)
+        .readableFrame()
+    }
+}
+
+// MARK: - Previews
+
+struct AuthenticationStartScreen_Previews: PreviewProvider, TestablePreview {
+    static let viewModel = AuthenticationStartScreenViewModel()
+    
+    static var previews: some View {
+        AuthenticationStartScreen(context: viewModel.context)
+    }
+}

ElementX/Sources/Screens/AuthenticationStartScreen/View/AuthenticationStartScreenBackgroundImage.swift

@@ -0,0 +1,28 @@
+//
+// Copyright 2023 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
+
+/// The background gradient shown on the launch, splash and onboarding screens.
+struct AuthenticationStartScreenBackgroundImage: View {
+    var body: some View {
+        Image(asset: Asset.Images.launchBackground)
+            .resizable()
+            .scaledToFill()
+            .ignoresSafeArea()
+            .accessibilityHidden(true)
+    }
+}