Show toasts above the keyboard if visible.

It appears there's no way to show toasts over the keyboard
since iOS 16.

Author: aforge

Podfile.lock

@@ -100,7 +100,7 @@ PODS:
   - Kingfisher (5.15.8):
     - Kingfisher/Core (= 5.15.8)
   - Kingfisher/Core (5.15.8)
-  - MobileVLCKit (3.4.1b9)
+  - MobileVLCKit (3.4.1b13)
   - nanopb (2.30908.0):
     - nanopb/decode (= 2.30908.0)
     - nanopb/encode (= 2.30908.0)
@@ -165,7 +165,7 @@ SPEC CHECKSUMS:
   GoogleDataTransport: 629c20a4d363167143f30ea78320d5a7eb8bd940
   GoogleUtilities: 684ee790a24f73ebb2d1d966e9711c203f2a4237
   Kingfisher: a3c03d702433fa6cfedabb2bddbe076fb8f2e902
-  MobileVLCKit: 63fd88297505b97027f23842ae9df3a7bf17b31e
+  MobileVLCKit: 685736e6bb92ed2107b0f083f094b61709413122
   nanopb: a0ba3315591a9ae0a16a309ee504766e90db0c96
   PhoneNumberKit: 441e8b26ec88d598e3591de9061eff18f5dd12e8
   PromisesObjC: 68159ce6952d93e17b2dfe273b8c40907db5ba58

Tinodios/MessageInteractor.swift

@@ -330,14 +330,13 @@ class MessageInteractor: DefaultComTopic.Listener, MessageBusinessLogic, Message
             onFailure: { err in
                 Cache.log.error("sendMessage error: %@", err.localizedDescription)
                 if let e = err as? TinodeError {
-                    switch e {
-                    case .notConnected(_):
+                    if case .notConnected(_) = e {
                         DispatchQueue.main.async { UiUtils.showToast(message: NSLocalizedString("You are offline.", comment: "Toast notification")) }
                         Cache.tinode.reconnectNow(interactively: false, reset: false)
-                    default:
-                        DispatchQueue.main.async { UiUtils.showToast(message: NSLocalizedString("Message not sent.", comment: "Toast notification")) }
+                        return nil
                     }
                 }
+                DispatchQueue.main.async { UiUtils.showToast(message: NSLocalizedString("Message not sent.", comment: "Toast notification")) }
                 return nil
             }
         ).thenFinally {

Tinodios/UiUtils.swift

@@ -389,10 +389,19 @@ class UiUtils {
     public static func showToast(message: String, duration: TimeInterval = 3.0, level: ToastLevel = .error) {
         // Grab the last window (instead the key window) so we can show
         // the toast over they keyboard when it's presented.
-        guard let parent = UIApplication.shared.windows.last else {
+        guard let topWindow = UIApplication.shared.windows.last else {
             Cache.log.error("UiUtils.showToast - parent window not set")
             return
         }
+        var parent: UIView = topWindow
+        if #available(iOS 16, *) {
+            // UIRemoteKeyboardWindow is no longer available in iOS 16 so keyboard (if presented) may
+            // cover the toast.
+            // Show toast over the input accessory view if visible.
+            if let inputView = UiUtils.topViewController(rootViewController: (UIApplication.shared.delegate as! AppDelegate).window?.rootViewController)?.inputAccessoryView {
+                parent = inputView
+            }
+        }
 
         let iconSize: CGFloat = 32
         let spacing: CGFloat = 8
@@ -600,17 +609,17 @@ class UiUtils {
     }
 
     public static func topViewController(rootViewController: UIViewController?) -> UIViewController? {
-        guard let rootViewController = rootViewController else { return nil }
-        guard let presented = rootViewController.presentedViewController else {
-            return rootViewController
+        guard let controller = rootViewController else { return nil }
+        if let presented = controller.presentedViewController {
+            return topViewController(rootViewController: presented)
         }
-        switch presented {
+        switch controller {
         case let navigationController as UINavigationController:
             return topViewController(rootViewController: navigationController.viewControllers.last)
         case let tabBarController as UITabBarController:
             return topViewController(rootViewController: tabBarController.selectedViewController)
         default:
-            return topViewController(rootViewController: presented)
+            return controller
         }
     }