fix(NotificationSettings): Hide mail and alert user

Mail/Views/Settings/General/SettingsNotificationsInstructionsView.swift

@@ -0,0 +1,53 @@
+/*
+ Infomaniak Mail - iOS App
+ Copyright (C) 2022 Infomaniak Network SA
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import MailResources
+import SwiftUI
+
+struct SettingsNotificationsInstructionsView: View {
+    @Environment(\.dismiss) private var dismiss
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 24) {
+            Text(MailResourcesStrings.Localizable.alertNotificationsDisabledTitle)
+                .textStyle(.bodyMedium)
+            Text(LocalizedStringKey(MailResourcesStrings.Localizable.alertNotificationsDisabledDescription))
+                .textStyle(.bodySecondary)
+            ModalButtonsView(
+                primaryButtonTitle: MailResourcesStrings.Localizable.alertNotificationsDisabledButton,
+                primaryButtonAction: openSettings
+            )
+        }
+    }
+
+    private func openSettings() {
+        guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else {
+            return
+        }
+
+        if UIApplication.shared.canOpenURL(settingsUrl) {
+            UIApplication.shared.open(settingsUrl)
+        }
+    }
+}
+
+struct SettingsNotificationsInstructionsView_Previews: PreviewProvider {
+    static var previews: some View {
+        SettingsNotificationsInstructionsView()
+    }
+}

Mail/Views/Settings/General/SettingsNotificationsView.swift

@@ -32,9 +32,40 @@ struct SettingsNotificationsView: View {
         .notificationsEnabled
     @State var subscribedTopics: [String]?
 
+    @State private var showAlertNotification = false
+    @State private var showWarning = false
+
     var body: some View {
         ScrollView {
-            VStack(spacing: 24) {
+            VStack(alignment: .leading, spacing: 24) {
+                if showWarning {
+                    VStack(alignment: .leading, spacing: 8) {
+                        Text(MailResourcesStrings.Localizable.warningNotificationsDisabledDescription)
+                            .textStyle(.bodySecondary)
+                            .frame(maxWidth: .infinity, alignment: .leading)
+                        MailButton(label: MailResourcesStrings.Localizable.warningNotificationsDisabledButton) {
+                            guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else {
+                                return
+                            }
+
+                            if UIApplication.shared.canOpenURL(settingsUrl) {
+                                UIApplication.shared.open(settingsUrl)
+                            }
+                        }
+                        .mailButtonStyle(.link)
+                    }
+                    .padding(16)
+                    .frame(maxWidth: .infinity)
+                    .background(
+                        RoundedRectangle(cornerRadius: 8)
+                            .fill(MailResourcesAsset.backgroundBlueNavBarColor.swiftUIColor)
+                    )
+                    .padding(.vertical, 16)
+                }
+
+                Text(Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as! String)
+                    .textStyle(.bodySmallSecondary)
+
                 Toggle(isOn: $notificationsEnabled) {
                     Text(MailResourcesStrings.Localizable.settingsEnableNotifications)
                         .textStyle(.body)
@@ -43,9 +74,8 @@ struct SettingsNotificationsView: View {
                     matomo.track(eventWithCategory: .settingsNotifications, name: "allNotifications", value: newValue)
                 }
 
-                IKDivider()
-
-                if subscribedTopics != nil {
+                if subscribedTopics != nil && notificationsEnabled {
+                    IKDivider()
                     ForEach(AccountManager.instance.mailboxes) { mailbox in
                         Toggle(isOn: Binding(get: {
                             notificationsEnabled && subscribedTopics?.contains(mailbox.notificationTopicName) == true
@@ -60,7 +90,6 @@ struct SettingsNotificationsView: View {
                             Text(mailbox.email)
                                 .textStyle(.body)
                         }
-                        .disabled(!notificationsEnabled)
                     }
                 }
 
@@ -73,6 +102,21 @@ struct SettingsNotificationsView: View {
         .onChange(of: notificationsEnabled) { enabled in
             if !enabled {
                 subscribedTopics = []
+            } else {
+                if showWarning {
+                    notificationsEnabled = false
+                    showAlertNotification = true
+                }
+            }
+        }
+        .onReceive(NotificationCenter.default.publisher(for: UIApplication.willEnterForegroundNotification)) { _ in
+            settingsNotificationEnabled { enabled in
+                showWarning = !enabled
+            }
+        }
+        .onAppear {
+            settingsNotificationEnabled { enabled in
+                showWarning = !enabled
             }
         }
         .task {
@@ -81,6 +125,9 @@ struct SettingsNotificationsView: View {
         .onDisappear {
             updateTopicsForCurrentUserIfNeeded()
         }
+        .customAlert(isPresented: $showAlertNotification) {
+            SettingsNotificationsInstructionsView()
+        }
         .matomoView(view: [MatomoUtils.View.settingsView.displayName, "Notifications"])
     }
 
@@ -98,6 +145,17 @@ struct SettingsNotificationsView: View {
             await notificationService.updateTopicsIfNeeded(subscribedTopics, userApiFetcher: currentApiFetcher)
         }
     }
+
+    private func settingsNotificationEnabled(completion: @escaping ((Bool) -> Void)) {
+        UNUserNotificationCenter.current().getNotificationSettings { settings in
+            switch settings.authorizationStatus {
+            case .notDetermined, .denied:
+                completion(false)
+            default:
+                completion(true)
+            }
+        }
+    }
 }
 
 struct SettingsNotificationsView_Previews: PreviewProvider {