Fix crash when using show timeline Siri Shortcut

Tusker/Screens/Main/MainSplitViewController.swift

@@ -334,4 +334,18 @@ extension MainSplitViewController: TuskerRootViewController {
             }
         }
     }
+    
+    func getTabController(tab: MainTabBarViewController.Tab) -> UIViewController? {
+        if traitCollection.horizontalSizeClass == .compact {
+            return tabBarViewController?.getTabController(tab: tab)
+        } else {
+            if tab == .compose {
+                return nil
+            } else if case .tab(tab) = sidebar.selectedItem {
+                return viewController(for: .secondary)
+            } else {
+                return nil
+            }
+        }
+    }
 }

Tusker/Screens/Main/TuskerRootViewController.swift

@@ -11,4 +11,5 @@ import UIKit
 protocol TuskerRootViewController: UIViewController {
     func presentCompose()
     func select(tab: MainTabBarViewController.Tab)
+    func getTabController(tab: MainTabBarViewController.Tab) -> UIViewController?
 }

Tusker/Shortcuts/UserActivityManager.swift

@@ -21,14 +21,14 @@ class UserActivityManager {
         return scene.session.mastodonController!
     }
     
-    private static func getMainTabBarController() -> MainTabBarViewController {
+    private static func getMainViewController() -> TuskerRootViewController {
         let scene = UIApplication.shared.connectedScenes.compactMap { $0 as? UIWindowScene }.first!
         let window = scene.windows.first { $0.isKeyWindow }!
-        return window.rootViewController as! MainTabBarViewController
+        return window.rootViewController as! TuskerRootViewController
     }
     
     private static func present(_ vc: UIViewController, animated: Bool = true) {
-        getMainTabBarController().present(vc, animated: animated)
+        getMainViewController().present(vc, animated: animated)
     }
 
     // MARK: - New Post
@@ -66,9 +66,9 @@ class UserActivityManager {
     }
     
     static func handleCheckNotifications(activity: NSUserActivity) {
-        let tabBarController = getMainTabBarController()
+        let mainViewController = getMainViewController()
-        tabBarController.select(tab: .notifications)
+        mainViewController.select(tab: .notifications)
-        if let navigationController = tabBarController.getTabController(tab: .notifications) as? UINavigationController,
+        if let navigationController = mainViewController.getTabController(tab: .notifications) as? UINavigationController,
             let notificationsPageController = navigationController.viewControllers.first as? NotificationsPageViewController {
             navigationController.popToRootViewController(animated: false)
             notificationsPageController.loadViewIfNeeded()
@@ -86,9 +86,9 @@ class UserActivityManager {
     }
     
     static func handleCheckMentions(activity: NSUserActivity) {
-        let tabBarController = getMainTabBarController()
+        let mainViewController = getMainViewController()
-        tabBarController.select(tab: .notifications)
+        mainViewController.select(tab: .notifications)
-        if let navController = tabBarController.getTabController(tab: .notifications) as? UINavigationController,
+        if let navController = mainViewController.getTabController(tab: .notifications) as? UINavigationController,
             let notificationsPageController = navController.viewControllers.first as? NotificationsPageViewController {
             navController.popToRootViewController(animated: false)
             notificationsPageController.loadViewIfNeeded()
@@ -133,9 +133,12 @@ class UserActivityManager {
                 return
         }
         
-        let tabBarController = getMainTabBarController()
+        let mainViewController = getMainViewController()
-        tabBarController.select(tab: .timelines)
+        mainViewController.select(tab: .timelines)
-        let navigationController = tabBarController.viewControllers![0] as! UINavigationController
+        guard let navigationController = mainViewController.getTabController(tab: .timelines) as? UINavigationController else {
+            return
+        }
+        
         switch timeline {
         case .home, .public(true), .public(false):
             navigationController.popToRootViewController(animated: false)
@@ -170,9 +173,9 @@ class UserActivityManager {
     }
     
     static func handleSearch(activity: NSUserActivity) {
-        let tabBarController = getMainTabBarController()
+        let mainViewController = getMainViewController()
-        tabBarController.select(tab: .explore)
+        mainViewController.select(tab: .explore)
-        if let navigationController = tabBarController.getTabController(tab: .explore) as? UINavigationController,
+        if let navigationController = mainViewController.getTabController(tab: .explore) as? UINavigationController,
             let exploreController = navigationController.viewControllers.first as? ExploreViewController {
             navigationController.popToRootViewController(animated: false)
             exploreController.searchController.isActive = true
@@ -189,9 +192,9 @@ class UserActivityManager {
     }
     
     static func handleBookmarks(activity: NSUserActivity) {
-        let tabBarController = getMainTabBarController()
+        let mainViewController = getMainViewController()
-        tabBarController.select(tab: .explore)
+        mainViewController.select(tab: .explore)
-        if let navigationController = tabBarController.getTabController(tab: .explore) as? UINavigationController {
+        if let navigationController = mainViewController.getTabController(tab: .explore) as? UINavigationController {
             navigationController.popToRootViewController(animated: false)
             navigationController.pushViewController(BookmarksTableViewController(mastodonController: mastodonController), animated: false)
         }