Resetting the app after deletion and cleanup settings (#372)

* Fixes #361 - Reset everything if the app has been deleted since the last run

* Cleaned up and renamed the ElementSettings to ApplicationSettings. Removed its singleton and moved it to the service locator.

* Moved the ApplicationSettings to the Application folder

* Merged together the BuildSettings and ApplicationSettings

* Reset the UserDefaults too when resetting the application state

* Rename ServiceLocator.applicationSettings to just settings

* Fix indentation

* Rename ApplicationSettings to AppSettings

* Various tweaks following code review

* Fix unit tests

ElementX/Sources/Other/ElementSettings.swift

@@ -1,82 +0,0 @@
-//
-// 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
-import SwiftUI
-
-/// Store Element specific app settings.
-final class ElementSettings: ObservableObject {
-    // MARK: - Constants
-
-    public enum UserDefaultsKeys: String {
-        case timelineStyle
-        case enableAnalytics
-        case isIdentifiedForAnalytics
-        case slidingSyncProxyBaseURLString
-        case enableInAppNotifications
-        case pusherProfileTag
-    }
-
-    static let shared = ElementSettings()
-
-    /// UserDefaults to be used on reads and writes.
-    static var store: UserDefaults {
-        guard let userDefaults = UserDefaults(suiteName: InfoPlistReader.target.appGroupIdentifier) else {
-            fatalError("Fail to load shared UserDefaults")
-        }
-        return userDefaults
-    }
-
-    private init() {
-        // no-op
-    }
-    
-    // MARK: - Analytics
-    
-    /// Whether the user has already been shown the PostHog analytics prompt.
-    var hasSeenAnalyticsPrompt: Bool {
-        Self.store.object(forKey: UserDefaultsKeys.enableAnalytics.rawValue) != nil
-    }
-    
-    /// `true` when the user has opted in to send analytics.
-    @AppStorage(UserDefaultsKeys.enableAnalytics.rawValue, store: store)
-    var enableAnalytics = false
-    
-    /// Indicates if the device has already called identify for this session to PostHog.
-    /// This is separate to `enableAnalytics` as logging out leaves analytics
-    /// enabled, but requires the next account to be identified separately.
-    @AppStorage(UserDefaultsKeys.isIdentifiedForAnalytics.rawValue, store: store)
-    var isIdentifiedForAnalytics = false
-
-    // MARK: - Room Screen
-
-    @AppStorage(UserDefaultsKeys.timelineStyle.rawValue, store: store)
-    var timelineStyle = BuildSettings.defaultRoomTimelineStyle
-
-    // MARK: - Client
-
-    @AppStorage(UserDefaultsKeys.slidingSyncProxyBaseURLString.rawValue, store: store)
-    var slidingSyncProxyBaseURLString = BuildSettings.defaultSlidingSyncProxyBaseURLString
-
-    // MARK: - Notifications
-
-    @AppStorage(UserDefaultsKeys.enableInAppNotifications.rawValue, store: store)
-    var enableInAppNotifications = true
-
-    @AppStorage(UserDefaultsKeys.pusherProfileTag.rawValue, store: store)
-    /// Tag describing which set of device specific rules a pusher executes.
-    var pusherProfileTag: String?
-}

ElementX/Sources/Other/PermalinkBuilder.swift

@@ -37,7 +37,7 @@ enum PermalinkBuilder {
             throw PermalinkBuilderError.invalidUserIdentifier
         }
         
-        let urlString = "\(BuildSettings.permalinkBaseURL)/#/\(userIdentifier)"
+        let urlString = "\(ServiceLocator.shared.settings.permalinkBaseURL)/#/\(userIdentifier)"
         
         guard let url = URL(string: urlString) else {
             throw PermalinkBuilderError.failedConstructingURL
@@ -75,7 +75,7 @@ enum PermalinkBuilder {
             throw PermalinkBuilderError.failedAddingPercentEncoding
         }
         
-        let urlString = "\(BuildSettings.permalinkBaseURL)/#/\(roomId)/\(eventId)"
+        let urlString = "\(ServiceLocator.shared.settings.permalinkBaseURL)/#/\(roomId)/\(eventId)"
         
         guard let url = URL(string: urlString) else {
             throw PermalinkBuilderError.failedConstructingURL
@@ -91,7 +91,7 @@ enum PermalinkBuilder {
             throw PermalinkBuilderError.failedAddingPercentEncoding
         }
         
-        let urlString = "\(BuildSettings.permalinkBaseURL)/#/\(identifier)"
+        let urlString = "\(ServiceLocator.shared.settings.permalinkBaseURL)/#/\(identifier)"
         
         guard let url = URL(string: urlString) else {
             throw PermalinkBuilderError.failedConstructingURL