add files for create room screen, add selected users section with test

ElementX/Sources/Screens/CreateRoom/CreateRoomCoordinator.swift

@@ -0,0 +1,58 @@
+//
+// 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
+
+struct CreateRoomCoordinatorParameters {
+    let selectedUsers: [UserProfile]
+}
+
+enum CreateRoomCoordinatorAction {
+    case createRoom
+}
+
+final class CreateRoomCoordinator: CoordinatorProtocol {
+    private let parameters: CreateRoomCoordinatorParameters
+    private var viewModel: CreateRoomViewModelProtocol
+    private let actionsSubject: PassthroughSubject<CreateRoomCoordinatorAction, Never> = .init()
+    private var cancellables: Set<AnyCancellable> = .init()
+    
+    var actions: AnyPublisher<CreateRoomCoordinatorAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+    
+    init(parameters: CreateRoomCoordinatorParameters) {
+        self.parameters = parameters
+        
+        viewModel = CreateRoomViewModel(selectedUsers: parameters.selectedUsers)
+    }
+    
+    func start() {
+        viewModel.actions.sink { [weak self] action in
+            guard let self else { return }
+            switch action {
+            case .createRoom:
+                self.actionsSubject.send(.createRoom)
+            }
+        }
+        .store(in: &cancellables)
+    }
+        
+    func toPresentable() -> AnyView {
+        AnyView(CreateRoomScreen(context: viewModel.context))
+    }
+}

ElementX/Sources/Screens/CreateRoom/CreateRoomModels.swift

@@ -0,0 +1,30 @@
+//
+// 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 CreateRoomViewModelAction {
+    case createRoom
+}
+
+struct CreateRoomViewState: BindableState {
+    var selectedUsers: [UserProfile]
+}
+
+enum CreateRoomViewAction {
+    case createRoom
+    case deselectUser(UserProfile)
+}

ElementX/Sources/Screens/CreateRoom/CreateRoomViewModel.swift

@@ -0,0 +1,43 @@
+//
+// 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 CreateRoomViewModelType = StateStoreViewModel<CreateRoomViewState, CreateRoomViewAction>
+
+class CreateRoomViewModel: CreateRoomViewModelType, CreateRoomViewModelProtocol {
+    private var actionsSubject: PassthroughSubject<CreateRoomViewModelAction, Never> = .init()
+    
+    var actions: AnyPublisher<CreateRoomViewModelAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+
+    init(selectedUsers: [UserProfile]) {
+        super.init(initialViewState: CreateRoomViewState(selectedUsers: selectedUsers))
+    }
+    
+    // MARK: - Public
+    
+    override func process(viewAction: CreateRoomViewAction) {
+        switch viewAction {
+        case .createRoom:
+            actionsSubject.send(.createRoom)
+        case .deselectUser(let user):
+            state.selectedUsers.removeAll(where: { $0.userID == user.userID })
+        }
+    }
+}

ElementX/Sources/Screens/CreateRoom/CreateRoomViewModelProtocol.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 CreateRoomViewModelProtocol {
+    var actions: AnyPublisher<CreateRoomViewModelAction, Never> { get }
+    var context: CreateRoomViewModelType.Context { get }
+}

ElementX/Sources/Screens/CreateRoom/View/CreateRoomScreen.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 SwiftUI
+
+struct CreateRoomScreen: View {
+    @ObservedObject var context: CreateRoomViewModel.Context
+    
+    var body: some View {
+        ScrollView {
+            mainContent
+        }
+        .scrollContentBackground(.hidden)
+        .background(Color.element.formBackground.ignoresSafeArea())
+        .navigationTitle(L10n.actionCreateARoom)
+        .navigationBarTitleDisplayMode(.inline)
+        .toolbar {
+            ToolbarItem(placement: .confirmationAction) {
+                createButton
+            }
+        }
+    }
+    
+    /// The main content of the view to be shown in a scroll view.
+    var mainContent: some View {
+        selectedUsersSection
+    }
+    
+    @ScaledMetric private var cellWidth: CGFloat = 64
+    private var selectedUsersSection: some View {
+        ScrollView(.horizontal, showsIndicators: false) {
+            HStack(spacing: 28) {
+                ForEach(context.viewState.selectedUsers, id: \.userID) { user in
+                    InviteUsersSelectedItem(user: user, imageProvider: context.imageProvider) {
+                        deselect(user)
+                    }
+                    .frame(width: cellWidth)
+                }
+            }
+            .padding(.horizontal, 18)
+        }
+    }
+    
+    private var createButton: some View {
+        Button { context.send(viewAction: .createRoom) } label: {
+            Text(L10n.actionCreate)
+        }
+    }
+    
+    private func deselect(_ user: UserProfile) {
+        context.send(viewAction: .deselectUser(user))
+    }
+}
+
+// MARK: - Previews
+
+struct CreateRoom_Previews: PreviewProvider {
+    static let viewModel = CreateRoomViewModel(selectedUsers: [.mockAlice, .mockBob, .mockCharlie])
+    
+    static var previews: some View {
+        CreateRoomScreen(context: viewModel.context)
+    }
+}

ElementX/Sources/UITests/UITestsAppCoordinator.swift

@@ -411,6 +411,12 @@ class MockScreen: Identifiable {
             let coordinator = InviteUsersScreenCoordinator(parameters: .init(userSession: MockUserSession(clientProxy: MockClientProxy(userID: "@mock:client.com"), mediaProvider: MockMediaProvider()), userDiscoveryService: userDiscoveryMock))
             navigationStackCoordinator.setRootCoordinator(coordinator)
             return navigationStackCoordinator
+        case .createRoom:
+            let navigationStackCoordinator = NavigationStackCoordinator()
+            let parameters = CreateRoomCoordinatorParameters(selectedUsers: [.mockAlice, .mockBob, .mockCharlie])
+            let coordinator = CreateRoomCoordinator(parameters: parameters)
+            navigationStackCoordinator.setRootCoordinator(coordinator)
+            return navigationStackCoordinator
         }
     }()
 }

ElementX/Sources/UITests/UITestsScreenIdentifier.swift

@@ -56,6 +56,7 @@ enum UITestsScreenIdentifier: String {
     case invitesWithBadges
     case invitesNoInvites
     case inviteUsers
+    case createRoom
 }
 
 extension UITestsScreenIdentifier: CustomStringConvertible {

UITests/Sources/CreateRoomScreenUITests.swift

@@ -0,0 +1,25 @@
+//
+// 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 ElementX
+import XCTest
+
+class CreateRoomScreenUITests: XCTestCase {
+    func testLanding() {
+        let app = Application.launch(.createRoom)
+        app.assertScreenshot(.createRoom)
+    }
+}

UnitTests/Sources/CreateRoomViewModelTests.swift

@@ -0,0 +1,43 @@
+//
+// 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 XCTest
+
+@testable import ElementX
+
+@MainActor
+class CreateRoomScreenViewModelTests: XCTestCase {
+    var viewModel: CreateRoomViewModelProtocol!
+    var clientProxy: MockClientProxy!
+    
+    var context: CreateRoomViewModel.Context {
+        viewModel.context
+    }
+    
+    override func setUpWithError() throws {
+        clientProxy = .init(userID: "")
+        let viewModel = CreateRoomViewModel(selectedUsers: [.mockAlice, .mockBob, .mockCharlie])
+        self.viewModel = viewModel
+    }
+    
+    func testDeselectUser() {
+        XCTAssertFalse(context.viewState.selectedUsers.isEmpty)
+        XCTAssertEqual(context.viewState.selectedUsers.count, 3)
+        XCTAssertEqual(context.viewState.selectedUsers.first?.userID, UserProfile.mockAlice.userID)
+        context.send(viewAction: .deselectUser(.mockAlice))
+        XCTAssertNotEqual(context.viewState.selectedUsers.first?.userID, UserProfile.mockAlice.userID)
+    }
+}