fixing background ios callkit call (#557)

Author: Brazol

packages/stream_video_push_notification/ios/Classes/StreamVideoPKDelegateManager.swift

@@ -19,11 +19,11 @@ public class StreamVideoPKDelegateManager: NSObject, PKPushRegistryDelegate {
         pushRegistry?.delegate = self
         pushRegistry?.desiredPushTypes = [.voIP]
     }
-
+    
     public func initChannel(channel: FlutterMethodChannel) {
         methodChannel = channel
     }
-
+    
     public func initData(data: [String: Any]) {
         defaultData = data
     }
@@ -43,45 +43,55 @@ public class StreamVideoPKDelegateManager: NSObject, PKPushRegistryDelegate {
         guard type == .voIP else {
             return completion()
         }
-       
+        
+        var streamDict = payload.dictionaryPayload["stream"] as? [String: Any]
+        
+        let state = UIApplication.shared.applicationState
+        if state == .background || state == .inactive {
+            handleIncomingCall(streamDict: streamDict, state: state, completion: completion)
+        } else if state == .active {
+            methodChannel?.invokeMethod("customizeCaller", arguments: streamDict) { (response) in
+                if let customData = response as? [String: Any] {
+                    streamDict?["created_by_display_name"] = customData["name"] as? String
+                    streamDict?["created_by_id"] = customData["handle"] as? String
+                }
+                
+                self.handleIncomingCall(streamDict: streamDict, state: state, completion: completion)
+            }
+        }
+    }
+    
+    func handleIncomingCall(streamDict: [String: Any]?, state: UIApplication.State, completion: @escaping () -> Void) {
         let defaultCallText = "Unknown Caller"
-
-        // Prepare call kit incoming notification.
-        let streamDict = payload.dictionaryPayload["stream"] as? [String: Any]
+        
         let callCid = streamDict?["call_cid"] as? String ?? ""
         var createdByName = streamDict?["created_by_display_name"] as? String
         var createdById = streamDict?["created_by_id"] as? String
-
-        methodChannel?.invokeMethod("customizeCaller", arguments: streamDict) { (response) in
-            if let customData = response as? [String: Any] {
-                createdByName = customData["name"] as? String ?? createdByName
-                createdById = customData["handle"] as? String ?? createdById
-            }
-
-            let data: StreamVideoPushParams
-            if let jsonData = self.defaultData {
-                data = StreamVideoPushParams(args: jsonData)
-            } else {
-                data = StreamVideoPushParams(args: [String: Any]())
-            }
-
-            data.callKitData.uuid = UUID().uuidString
-            data.callKitData.nameCaller = createdByName ?? defaultCallText
-            data.callKitData.handle = createdById ?? defaultCallText
-            data.callKitData.type = 1 //video
-            data.callKitData.extra = ["callCid": callCid]
-
-            // Show call incoming notification.
-            StreamVideoPushNotificationPlugin.showIncomingCall(
-                data: data.callKitData,
-                fromPushKit: true
-            )
-            
-            // Complete after a delay to ensure that the incoming call notification
-            // is displayed before completing the push notification handling.
-            DispatchQueue.main.asyncAfter(deadline: .now() + 1.5) {
-                completion()
-            }
+        
+        let data: StreamVideoPushParams
+        if let jsonData = self.defaultData {
+            data = StreamVideoPushParams(args: jsonData)
+        } else {
+            data = StreamVideoPushParams(args: [String: Any]())
+        }
+        
+        data.callKitData.uuid = UUID().uuidString
+        data.callKitData.nameCaller = createdByName ?? defaultCallText
+        data.callKitData.handle = createdById ?? defaultCallText
+        data.callKitData.type = 1 //video
+        data.callKitData.extra = ["callCid": callCid]
+        
+        // Show call incoming notification.
+        StreamVideoPushNotificationPlugin.showIncomingCall(
+            data: data.callKitData,
+            fromPushKit: true
+        )
+        
+        // Complete after a delay to ensure that the incoming call notification
+        // is displayed before completing the push notification handling.
+        DispatchQueue.main.asyncAfter(deadline: .now() + 1.5) {
+            completion()
         }
     }
+    
 }

packages/stream_video_push_notification/lib/src/stream_video_push_notification.dart

@@ -20,6 +20,8 @@ const _idCallAcceptDecline = 4;
 /// Implementation of [PushNotificationManager] for Stream Video.
 class StreamVideoPushNotificationManager implements PushNotificationManager {
   /// Factory for creating a new instance of [StreamVideoPushNotificationManager].
+  ///   /// Parameters:
+  /// * [callerCustomizationCallback] callback providing customized caller data used for call screen and CallKit call. (for iOS this will only work for foreground calls)
   static create({
     required StreamVideoPushProvider iosPushProvider,
     required StreamVideoPushProvider androidPushProvider,