Switches to UIScene-based lifecycle

AltStore/AppDelegate.swift

@@ -73,6 +73,17 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool
     {
+        DatabaseManager.shared.start { (error) in
+            if let error = error
+            {
+                print("Failed to start DatabaseManager. Error:", error as Any)
+            }
+            else
+            {
+                print("Started DatabaseManager.")
+            }
+        }
+        
         AnalyticsManager.shared.start()
         
         self.setTintColor()
@@ -119,6 +130,24 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     }
 }
 
+@available(iOS 13, *)
+extension AppDelegate
+{
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration
+    {
+        // Called when a new scene session is being created.
+        // Use this method to select a configuration to create the new scene with.
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+    
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>)
+    {
+        // Called when the user discards a scene session.
+        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+    }
+}
+
 private extension AppDelegate
 {
     func setTintColor()

AltStore/Info.plist

@@ -85,6 +85,27 @@
 	</array>
 	<key>NSLocalNetworkUsageDescription</key>
 	<string>AltStore uses the local network to find and communicate with AltServer.</string>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<true/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UILaunchStoryboardName</key>
+					<string>LaunchScreen</string>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
 	<key>UIBackgroundModes</key>
 	<array>
 		<string>audio</string>

AltStore/SceneDelegate.swift

@@ -0,0 +1,52 @@
+//
+//  SceneDelegate.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/6/20.
+//  Copyright © 2020 Riley Testut. All rights reserved.
+//
+
+import UIKit
+import AltStoreCore
+
+@available(iOS 13, *)
+class SceneDelegate: UIResponder, UIWindowSceneDelegate
+{
+    var window: UIWindow?
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions)
+    {
+        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
+        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
+        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
+        guard let _ = (scene as? UIWindowScene) else { return }
+    }
+
+    func sceneWillEnterForeground(_ scene: UIScene)
+    {
+        // Called as the scene transitions from the background to the foreground.
+        // Use this method to undo the changes made on entering the background.
+        
+        // applicationWillEnterForeground is _not_ called when launching app,
+        // whereas sceneWillEnterForeground _is_ called when launching.
+        // As a result, DatabaseManager might not be started yet, so just return if it isn't
+        // (since all these methods are called separately during app startup).
+        guard DatabaseManager.shared.isStarted else { return }
+        
+        AppManager.shared.update()
+        ServerManager.shared.startDiscovering()
+        
+        PatreonAPI.shared.refreshPatreonAccount()
+    }
+    
+    func sceneDidEnterBackground(_ scene: UIScene)
+    {
+        // Called as the scene transitions from the foreground to the background.
+        // Use this method to save data, release shared resources, and store enough scene-specific state information
+        // to restore the scene back to its current state.
+        
+        guard UIApplication.shared.applicationState == .background else { return }
+        
+        ServerManager.shared.stopDiscovering()
+    }
+}