[#24] [iOS] [Integrate] As a user, I can log out, Part: ViewModel

iosApp/Survey.xcodeproj/project.pbxproj

@@ -79,6 +79,9 @@
 		09A9F8D92952B431009DE583 /* GenericScreen.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09A9F8D72952B42D009DE583 /* GenericScreen.swift */; };
 		09A9F8DC2952B574009DE583 /* SurveyScreen.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09A9F8DA2952B54F009DE583 /* SurveyScreen.swift */; };
 		09A9F8DF2952B585009DE583 /* AccountScreen.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09A9F8DD2952B582009DE583 /* AccountScreen.swift */; };
+		09A9F8F329544F5E009DE583 /* AccountView+DataSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09A9F8F229544F5E009DE583 /* AccountView+DataSource.swift */; };
+		09A9F8F8295479CA009DE583 /* AccountViewDataSourceSpec.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09A9F8F5295479C3009DE583 /* AccountViewDataSourceSpec.swift */; };
+		09A9F8FB29555505009DE583 /* KMPNative+Guaranteed.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09A9F8FA29555505009DE583 /* KMPNative+Guaranteed.swift */; };
 		09C2F3FD2930943700F44818 /* ResetPasswordViewDataSourceSpec.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09C2F3FB2930943200F44818 /* ResetPasswordViewDataSourceSpec.swift */; };
 		09C2F4032934588B00F44818 /* TimeInterval+Constants.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09C2F4012934588400F44818 /* TimeInterval+Constants.swift */; };
 		09C2F4062934680000F44818 /* ScreenProtocol+Permission.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09C2F404293467FA00F44818 /* ScreenProtocol+Permission.swift */; };
@@ -249,6 +252,9 @@
 		09A9F8D72952B42D009DE583 /* GenericScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GenericScreen.swift; sourceTree = "<group>"; };
 		09A9F8DA2952B54F009DE583 /* SurveyScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SurveyScreen.swift; sourceTree = "<group>"; };
 		09A9F8DD2952B582009DE583 /* AccountScreen.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountScreen.swift; sourceTree = "<group>"; };
+		09A9F8F229544F5E009DE583 /* AccountView+DataSource.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "AccountView+DataSource.swift"; sourceTree = "<group>"; };
+		09A9F8F5295479C3009DE583 /* AccountViewDataSourceSpec.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountViewDataSourceSpec.swift; sourceTree = "<group>"; };
+		09A9F8FA29555505009DE583 /* KMPNative+Guaranteed.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "KMPNative+Guaranteed.swift"; sourceTree = "<group>"; };
 		09C2F3FB2930943200F44818 /* ResetPasswordViewDataSourceSpec.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ResetPasswordViewDataSourceSpec.swift; sourceTree = "<group>"; };
 		09C2F4012934588400F44818 /* TimeInterval+Constants.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "TimeInterval+Constants.swift"; sourceTree = "<group>"; };
 		09C2F404293467FA00F44818 /* ScreenProtocol+Permission.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "ScreenProtocol+Permission.swift"; sourceTree = "<group>"; };
@@ -699,6 +705,22 @@
 			path = Screens;
 			sourceTree = "<group>";
 		};
+		09A9F8F4295479B4009DE583 /* Account */ = {
+			isa = PBXGroup;
+			children = (
+				09A9F8F5295479C3009DE583 /* AccountViewDataSourceSpec.swift */,
+			);
+			path = Account;
+			sourceTree = "<group>";
+		};
+		09A9F8F9295554EF009DE583 /* KMPNative */ = {
+			isa = PBXGroup;
+			children = (
+				09A9F8FA29555505009DE583 /* KMPNative+Guaranteed.swift */,
+			);
+			path = KMPNative;
+			sourceTree = "<group>";
+		};
 		09C2F3FA293093F600F44818 /* ResetPassword */ = {
 			isa = PBXGroup;
 			children = (
@@ -874,13 +896,15 @@
 			isa = PBXGroup;
 			children = (
 				09E6AC0F2951D8B5007F1EE3 /* AccountView.swift */,
+				09A9F8F229544F5E009DE583 /* AccountView+DataSource.swift */,
 			);
 			path = AccountView;
 			sourceTree = "<group>";
 		};
 		09FE26CE294B2639005A7F85 /* SurveySelection */ = {
 			isa = PBXGroup;
 			children = (
+				09A9F8F4295479B4009DE583 /* Account */,
 				09FE26CF294B264B005A7F85 /* SurveySelectionViewDataSourceSpec.swift */,
 			);
 			path = SurveySelection;
@@ -914,6 +938,7 @@
 		0F3BE49893E55BC4638B90F0 /* Extensions */ = {
 			isa = PBXGroup;
 			children = (
+				09A9F8F9295554EF009DE583 /* KMPNative */,
 				0982A7F4292371F000FC1976 /* MokoResources */,
 				09636AF728D47A3800A5CB97 /* SwiftUI */,
 				0F4C0078B1B4D7C1871DDE54 /* Foundation */,
@@ -1777,10 +1802,12 @@
 				09636B3028D8267D00A5CB97 /* ViewId+General.swift in Sources */,
 				09636B0228D4876100A5CB97 /* PrimaryButton.swift in Sources */,
 				09CE770C28E191B400EAA9EE /* AppCoordinator.swift in Sources */,
+				09A9F8FB29555505009DE583 /* KMPNative+Guaranteed.swift in Sources */,
 				09495FCF29110E820036BDFB /* String+URL.swift in Sources */,
 				09495F0728E40E130036BDFB /* FadePaginationView.swift in Sources */,
 				0982A80229278E9000FC1976 /* SurveySelectionView.swift in Sources */,
 				0982A80629278E9000FC1976 /* SurveyItemLoading.swift in Sources */,
+				09A9F8F329544F5E009DE583 /* AccountView+DataSource.swift in Sources */,
 				09495F0928E410A00036BDFB /* PageControlView.swift in Sources */,
 				09636AFD28D484CA00A5CB97 /* R+SwiftUI.swift in Sources */,
 				09495FCB291107760036BDFB /* Image+Constants.swift in Sources */,
@@ -1862,6 +1889,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				09A9F8F8295479CA009DE583 /* AccountViewDataSourceSpec.swift in Sources */,
 				09C2F413293777ED00F44818 /* Combine+Collect.swift in Sources */,
 				0964B1DD2947021400946FA1 /* SplashViewDataSourceSpec.swift in Sources */,
 				5BBBFAF49689F25A8C1D57AB /* AutoMockable.generated.swift in Sources */,

iosApp/Survey/Sources/Presentation/Coordinator/AppCoordinator.swift

@@ -11,7 +11,7 @@ import SwiftUI
 
 struct AppCoordinator: View {
 
-    @ObservedObject var coordinator = RouteCoordinator()
+    @StateObject var coordinator = RouteCoordinator()
 
     var body: some View {
         Router($coordinator.routes) { screen, _ in
@@ -23,7 +23,7 @@ struct AppCoordinator: View {
             case .splash:
                 SplashView(coordinator: coordinator)
             case .surveySelection:
-                SurveySelectionContainerView()
+                SurveySelectionContainerView(coordinator: coordinator)
             }
         }
     }

iosApp/Survey/Sources/Presentation/Coordinator/RouteCoordinator.swift

@@ -17,6 +17,10 @@ protocol BaseCoordinator {
 class RouteCoordinator: ObservableObject {
 
     @Published var routes: Routes<Screen> = [.root(.splash, embedInNavigationView: true)]
+
+    func showLogin() {
+        routes = [.root(.login, embedInNavigationView: true)]
+    }
 }
 
 extension RouteCoordinator: BaseCoordinator {
@@ -32,8 +36,8 @@ extension RouteCoordinator: BaseCoordinator {
 
 extension RouteCoordinator: SplashCoordinator {
 
-    func showLogin() {
-        routes = [.root(.login, embedInNavigationView: true)]
+    func showLoginFromSplash() {
+        showLogin()
     }
 }
 
@@ -47,3 +51,10 @@ extension RouteCoordinator: LoginCoordinator {
         routes = [.root(.surveySelection)]
     }
 }
+
+extension RouteCoordinator: AccountCoordinator {
+
+    func showLoginFromAccount() {
+        showLogin()
+    }
+}

iosApp/Survey/Sources/Presentation/Modules/ResetPassword/ResetPassword+DataSource.swift

@@ -40,7 +40,7 @@ extension ResetPasswordView {
                 }
                 .receive(on: DispatchQueue.main)
                 .sink { [weak self] value in
-                    guard let self = self else { return }
+                    guard let self else { return }
                     self.updateStates(value)
                     guard let notification = value.successNotification else { return }
                     self.scheduleNotification(notification)

iosApp/Survey/Sources/Presentation/Modules/Splash/SplashView+DataSource.swift

@@ -14,7 +14,7 @@ import SwiftUI
 // sourcery: AutoMockable
 protocol SplashCoordinator {
 
-    func showLogin()
+    func showLoginFromSplash()
     func showHome()
 }
 
@@ -43,7 +43,7 @@ extension SplashView {
                 }
                 .receive(on: DispatchQueue.main)
                 .sink { [weak self] value in
-                    guard let self = self else { return }
+                    guard let self else { return }
                     self.updateStates(value)
                 }
                 .store(in: &cancellables)
@@ -60,7 +60,7 @@ extension SplashView {
                 if viewState.isLogin {
                     coordinator.showHome()
                 } else {
-                    coordinator.showLogin()
+                    coordinator.showLoginFromSplash()
                 }
             }
         }

iosApp/Survey/Sources/Presentation/Modules/SurveySelection/Account/AccountView.swift

@@ -9,9 +9,17 @@
 import Shared
 import SwiftUI
 
+// sourcery: AutoMockable
+protocol AccountCoordinator {
+
+    func showLoginFromAccount()
+}
+
 struct AccountView: View {
 
-    let account: AccountUiModel
+    @StateObject var dataSource: DataSource
+
+    var account: AccountUiModel? { dataSource.viewState.accountUiModel }
 
     var body: some View {
         ZStack {
@@ -38,16 +46,17 @@ struct AccountView: View {
         .frame(width: 200.0)
         .accessibilityElement(children: .contain)
         .accessibility(.account(.view))
+        .loadingDialog(loading: $dataSource.isShowingLoading)
     }
 
     var profileSection: some View {
         HStack(alignment: .firstTextBaseline) {
-            Text(account.name)
+            Text((account?.name).string)
                 .font(.boldLarge)
                 .lineLimit(1)
                 .accessibility(.account(.profileText))
             Spacer()
-            Image.url(account.avatarUrl.string)
+            Image.url((account?.avatarUrl).string)
                 .resizable()
                 .frame(width: 36.0, height: 36.0)
                 .cornerRadius(18.0)
@@ -59,7 +68,7 @@ struct AccountView: View {
 
     var logoutSection: some View {
         Button {
-            // TODO: Add logout action
+            dataSource.logOut()
         } label: {
             Text(String.localizeId.account_logout_button())
                 .font(.regularLarge)
@@ -70,10 +79,19 @@ struct AccountView: View {
     }
 
     var versionSection: some View {
-        Text(account.appVersion)
+        Text((account?.appVersion).string)
             .font(.regularTiny)
             .foregroundColor(.white)
             .opacity(0.5)
             .accessibility(.account(.versionText))
     }
+
+    init(account: AccountUiModel, coordinator: AccountCoordinator) {
+        _dataSource = StateObject(
+            wrappedValue: DataSource(
+                coordinator: coordinator,
+                viewModel: AccountViewModel(accountUiModel: account)
+            )
+        )
+    }
 }

iosApp/Survey/Sources/Presentation/Modules/SurveySelection/AccountView/AccountView+DataSource.swift

@@ -0,0 +1,55 @@
+//
+//  AccountView+DataSource.swift
+//  Survey
+//
+//  Created by Bliss on 22/12/22.
+//  Copyright © 2022 Nimble. All rights reserved.
+//
+
+import Combine
+import KMPNativeCoroutinesCombine
+import Shared
+
+extension AccountView {
+
+    final class DataSource: ObservableObject {
+
+        private let viewModel: AccountViewModel
+        private let coordinator: AccountCoordinator
+
+        @Published private(set) var viewState = AccountViewState()
+        @Published var isShowingLoading = false
+
+        private var cancellables = Set<AnyCancellable>()
+
+        init(
+            coordinator: AccountCoordinator,
+            viewModel: AccountViewModel
+        ) {
+            self.viewModel = viewModel
+            self.coordinator = coordinator
+            createGuaranteedPublisher(
+                for: viewModel.viewStateNative,
+                fallback: AccountViewState()
+            )
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] value in
+                guard let self else { return }
+                self.updateStates(value)
+            }
+            .store(in: &cancellables)
+        }
+
+        func logOut() {
+            viewModel.logOut()
+        }
+
+        private func updateStates(_ state: AccountViewState) {
+            viewState = state
+            isShowingLoading = state.isLoading
+            if state.isLogout {
+                coordinator.showLoginFromAccount()
+            }
+        }
+    }
+}

iosApp/Survey/Sources/Presentation/Modules/SurveySelection/SurveySelectionContainerView.swift

@@ -10,6 +10,8 @@ import SwiftUI
 
 struct SurveySelectionContainerView: View {
 
+    let coordinator: AccountCoordinator
+
     @StateObject private var dataSource = SurveySelectionView.DataSource()
 
     @State var isShowingAccountView = false
@@ -35,7 +37,7 @@ struct SurveySelectionContainerView: View {
             HStack {
                 Spacer()
                 if isShowingAccountView, let account = dataSource.viewState.accountUiModel {
-                    AccountView(account: account)
+                    AccountView(account: account, coordinator: coordinator)
                         .gesture(
                             DragGesture(minimumDistance: 50)
                                 .onEnded { gesture in

iosApp/Survey/Sources/Presentation/Modules/SurveySelection/SurveySelectionView+DataSource.swift

@@ -32,7 +32,7 @@ extension SurveySelectionView {
                 }
                 .receive(on: DispatchQueue.main)
                 .sink { [weak self] value in
-                    guard let self = self else { return }
+                    guard let self else { return }
                     self.updateStates(value)
                 }
                 .store(in: &cancellables)

iosApp/Survey/Sources/Supports/Extensions/KMPNative/KMPNative+Guaranteed.swift

@@ -0,0 +1,23 @@
+//
+//  KMPNative+Guaranteed.swift
+//  Survey
+//
+//  Created by Bliss on 23/12/22.
+//  Copyright © 2022 Nimble. All rights reserved.
+//
+
+import Combine
+import KMPNativeCoroutinesCombine
+import KMPNativeCoroutinesCore
+import Shared
+
+public func createGuaranteedPublisher<Output, Failure: Error, Unit>(
+    for nativeFlow: @escaping NativeFlow<Output, Failure, Unit>,
+    fallback: Output
+) -> AnyPublisher<Output, Just<Output>.Failure> {
+    return createPublisher(for: nativeFlow)
+        .catch { _ -> Just<Output> in
+            Just(fallback)
+        }
+        .eraseToAnyPublisher()
+}

iosApp/Survey/Sources/Supports/Helpers/KMM/AutoMockable/Shared+AutoMockable.swift

@@ -68,3 +68,13 @@ protocol GetAppVersionUseCaseKMM: GetAppVersionUseCase {
         @escaping (Error?, KotlinUnit) -> KotlinUnit
     ) -> () -> KotlinUnit
 }
+
+// sourcery: AutoMockable
+protocol LogOutUseCaseKMM: LogOutUseCase {
+
+    func invoke() -> Kotlinx_coroutines_coreFlow
+    func invokeNative() -> (
+        @escaping (KotlinUnit, KotlinUnit) -> KotlinUnit,
+        @escaping (Error?, KotlinUnit) -> KotlinUnit
+    ) -> () -> KotlinUnit
+}

iosApp/SurveyKIFUITests/Sources/Screens/AccountScreen.swift

@@ -11,6 +11,12 @@ import Foundation
 final class AccountScreen: GenericScreen {
 
     func navigateToHome() {
-        tester.tapScreen(at: .init(x: 10.0, y: 100.0))
+        if tester.tryFindingView(withAccessibilityIdentifier: ViewId.account(.logoutButton)()) {
+            tester.tapScreen(at: .init(x: 10.0, y: 100.0))
+        }
+    }
+
+    func logOut() {
+        tester.tapView(withAccessibilityIdentifier: ViewId.account(.logoutButton)())
     }
 }

iosApp/SurveyKIFUITests/Sources/Specs/Presentation/Module/AccountSpec.swift

@@ -68,6 +68,20 @@ final class AccountSpec: QuickSpec {
                         }
                     }
                 }
+
+                describe("its logout button") {
+
+                    context("when tapped") {
+
+                        beforeEach {
+                            accountScreen.logOut()
+                        }
+
+                        it("shows login screen") {
+                            self.tester().waitForView(withAccessibilityIdentifier: ViewId.login(.loginButton)())
+                        }
+                    }
+                }
             }
         }
     }