2

keyBoard/AppDelegate.m

@@ -7,10 +7,25 @@
 
 #import "AppDelegate.h"
 #import "ViewController.h"
+#import "KBPermissionViewController.h"
 
-@interface AppDelegate ()
+static NSString * const kKBKeyboardExtensionBundleId = @"com.keyBoard.CustomKeyboard";
+static BOOL KBIsKeyboardEnabled(void) {
+    for (UITextInputMode *mode in [UITextInputMode activeInputModes]) {
+        NSString *identifier = nil;
+        @try {
+            identifier = [mode valueForKey:@"identifier"]; // not a public API
+        } @catch (__unused NSException *e) {
+            identifier = nil;
+        }
+        if ([identifier isKindOfClass:[NSString class]] &&
+            [identifier rangeOfString:kKBKeyboardExtensionBundleId].location != NSNotFound) {
+            return YES;
+        }
+    }
+    return NO;
+}
 
-@end
 
 @implementation AppDelegate
 
@@ -22,6 +37,15 @@
     [self.window makeKeyAndVisible];
     ViewController *vc = [[ViewController alloc] init];
     self.window.rootViewController = vc;
+    
+    // Present guide if the custom keyboard is not enabled yet
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (!KBIsKeyboardEnabled()) {
+            KBPermissionViewController *guide = [KBPermissionViewController new];
+            guide.modalPresentationStyle = UIModalPresentationFullScreen;
+            [self.window.rootViewController presentViewController:guide animated:YES completion:nil];
+        }
+    });
     return YES;
 }