NetP iOS notifications settings (#541)

* Add helpers for toggling netP notifications

* Extract a protocol for the settings store

* Add MockNetworkProtectionNotificationsSettingsStore

* Update Sources/NetworkProtection/Storage/NetworkProtectionNotificationsSettingsStore.swift

Co-authored-by: Sam Symons <[email protected]>

* Remove dead property

---------

Co-authored-by: Sam Symons <[email protected]>

Sources/NetworkProtection/Status/UserNotifications/NetworkProtectionNotificationsPresenterTogglableDecorator.swift

@@ -0,0 +1,65 @@
+//
+//  NetworkProtectionNotificationsPresenterTogglableDecorator.swift
+//  DuckDuckGo
+//
+//  Copyright © 2023 DuckDuckGo. All rights reserved.
+//
+//  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
+
+final public class NetworkProtectionNotificationsPresenterTogglableDecorator: NetworkProtectionNotificationsPresenter {
+    private let notificationSettingsStore: NetworkProtectionNotificationsSettingsStore
+    private let wrappeePresenter: NetworkProtectionNotificationsPresenter
+
+    public init(notificationSettingsStore: NetworkProtectionNotificationsSettingsStore, wrappee: NetworkProtectionNotificationsPresenter) {
+        self.notificationSettingsStore = notificationSettingsStore
+        self.wrappeePresenter = wrappee
+    }
+
+    public func showConnectedNotification(serverLocation: String?) {
+        guard notificationSettingsStore.alertsEnabled else {
+            return
+        }
+        wrappeePresenter.showConnectedNotification(serverLocation: serverLocation)
+    }
+
+    public func showReconnectingNotification() {
+        guard notificationSettingsStore.alertsEnabled else {
+            return
+        }
+        wrappeePresenter.showReconnectingNotification()
+    }
+
+    public func showConnectionFailureNotification() {
+        guard notificationSettingsStore.alertsEnabled else {
+            return
+        }
+        wrappeePresenter.showConnectionFailureNotification()
+    }
+
+    public func showSupersededNotification() {
+        guard notificationSettingsStore.alertsEnabled else {
+            return
+        }
+        wrappeePresenter.showSupersededNotification()
+    }
+
+    public func showTestNotification() {
+        guard notificationSettingsStore.alertsEnabled else {
+            return
+        }
+        wrappeePresenter.showTestNotification()
+    }
+}

Sources/NetworkProtection/Storage/NetworkProtectionNotificationsSettingsStore.swift

@@ -0,0 +1,48 @@
+//
+//  NetworkProtectionNotificationsSettingsStore.swift
+//  DuckDuckGo
+//
+//  Copyright © 2023 DuckDuckGo. All rights reserved.
+//
+//  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
+
+public protocol NetworkProtectionNotificationsSettingsStore {
+    var alertsEnabled: Bool { get set }
+}
+
+final public class NetworkProtectionNotificationsSettingsUserDefaultsStore: NetworkProtectionNotificationsSettingsStore {
+    private enum Key {
+        static let alerts = "com.duckduckgo.vpnNotificationSettings.alertsEnabled"
+    }
+
+    private let userDefaults: UserDefaults
+
+    public init(userDefaults: UserDefaults) {
+        self.userDefaults = userDefaults
+    }
+
+    public var alertsEnabled: Bool {
+        get {
+            guard self.userDefaults.object(forKey: Key.alerts) != nil else {
+                return true
+            }
+            return self.userDefaults.bool(forKey: Key.alerts)
+        }
+        set {
+            self.userDefaults.set(newValue, forKey: Key.alerts)
+        }
+    }
+}

Sources/NetworkProtectionTestUtils/Storage/MockNetworkProtectionNotificationsSettingsStore.swift

@@ -0,0 +1,25 @@
+//
+//  MockNetworkProtectionNotificationsSettingsStore.swift
+//  DuckDuckGo
+//
+//  Copyright © 2023 DuckDuckGo. All rights reserved.
+//
+//  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
+import NetworkProtection
+
+public class MockNetworkProtectionNotificationsSettingsStore: NetworkProtectionNotificationsSettingsStore {
+    public var alertsEnabled: Bool = false
+}