clean up and refactoring

Session/Calls/Call Management/SessionCall.swift

@@ -27,6 +27,7 @@ public final class SessionCall: CurrentCallProtocol, WebRTCSessionDelegate {
     let isOutgoing: Bool
     var remoteSDP: RTCSessionDescription? = nil
     var callInteractionId: Int64?
+    var answerCallAction: CXAnswerCallAction? = nil
     
     let contactName: String
     let profilePicture: UIImage
@@ -269,8 +270,6 @@ public final class SessionCall: CurrentCallProtocol, WebRTCSessionDelegate {
         if let sdp = remoteSDP {
             SNLog("[Calls] Got remote sdp already")
             webRTCSession.handleRemoteSDP(sdp, from: sessionId) // This sends an answer message internally
-        } else {
-            SNLog("[Calls] Didn't get remote sdp yet, waiting for it")
         }
     }
     
@@ -396,6 +395,7 @@ public final class SessionCall: CurrentCallProtocol, WebRTCSessionDelegate {
         }
         
         self.hasConnected = true
+        self.answerCallAction?.fulfill()
     }
     
     public func isRemoteVideoDidChange(isEnabled: Bool) {

Session/Calls/Call Management/SessionCallManager+Action.swift

@@ -16,20 +16,16 @@ extension SessionCallManager {
         return true
     }
     
-    @discardableResult
+    public func answerCallAction() {
-    public func answerCallAction() -> Bool {
+        guard let call: SessionCall = (self.currentCall as? SessionCall) else { return }
-        guard let call: SessionCall = (self.currentCall as? SessionCall) else { return false }
         
         if Singleton.hasAppContext, Singleton.appContext.frontmostViewController is CallVC {
             call.answerSessionCall()
         }
         else {
-            guard
+            guard Singleton.hasAppContext, let presentingVC = Singleton.appContext.frontmostViewController else { return } // FIXME: Handle more gracefully
-                Singleton.hasAppContext,
-                let presentingVC = Singleton.appContext.frontmostViewController
-            else { return false } // FIXME: Handle more gracefully
-            let callVC = CallVC(for: call)
             
+            let callVC = CallVC(for: call)
             if let conversationVC = presentingVC as? ConversationVC {
                 callVC.conversationVC = conversationVC
                 conversationVC.inputAccessoryView?.isHidden = true
@@ -40,7 +36,6 @@ extension SessionCallManager {
                 call.answerSessionCall()
             }
         }
-        return true
     }
     
     @discardableResult

Session/Calls/Call Management/SessionCallManager+CXProvider.swift

@@ -23,24 +23,20 @@ extension SessionCallManager: CXProviderDelegate {
     
     public func provider(_ provider: CXProvider, perform action: CXAnswerCallAction) {
         Log.assertOnMainThread()
-        Log.info("[CallKit] Perform CXAnswerCallAction")
+        Log.debug("[CallKit] Perform CXAnswerCallAction")
         
         guard let call: SessionCall = (self.currentCall as? SessionCall) else {
             Log.warn("[CallKit] No session call")
             return action.fail()
         }
         
+        call.answerCallAction = action
+        
         if Singleton.hasAppContext && Singleton.appContext.isMainAppAndActive {
-            if answerCallAction() {
+            self.answerCallAction()
-                action.fulfill()
-            }
-            else {
-                action.fail()
-            }
         }
         else {
             call.answerSessionCallInBackground()
-            action.fulfill()
         }
     }
     

Session/Calls/Call Management/SessionCallManager.swift

@@ -9,6 +9,23 @@ import SessionMessagingKit
 import SignalUtilitiesKit
 import SessionUtilitiesKit
 
+// MARK: - CXProviderConfiguration
+
+public extension CXProviderConfiguration {
+    static func defaultConfiguration(_ useSystemCallLog: Bool = false) -> CXProviderConfiguration {
+        let iconMaskImage: UIImage = #imageLiteral(resourceName: "SessionGreen32")
+        let configuration = CXProviderConfiguration()
+        configuration.supportsVideo = true
+        configuration.maximumCallGroups = 1
+        configuration.maximumCallsPerCallGroup = 1
+        configuration.supportedHandleTypes = [.generic]
+        configuration.iconTemplateImageData = iconMaskImage.pngData()
+        configuration.includesCallsInRecents = useSystemCallLog
+        
+        return configuration
+    }
+}
+
 // MARK: - SessionCallManager
 
 public final class SessionCallManager: NSObject, CallManagerProtocol {
@@ -37,7 +54,7 @@ public final class SessionCallManager: NSObject, CallManagerProtocol {
         self.dependencies = dependencies
         
         if Preferences.isCallKitSupported {
-            self.provider = Self.createProvider(useSystemCallLog: useSystemCallLog)
+            self.provider = CXProvider(configuration: .defaultConfiguration(useSystemCallLog))
             self.callController = CXCallController()
         }
         else {
@@ -51,20 +68,6 @@ public final class SessionCallManager: NSObject, CallManagerProtocol {
         self.provider?.setDelegate(self, queue: nil)
     }
     
-    public static func createProvider(useSystemCallLog: Bool) -> CXProvider {
-        let iconMaskImage: UIImage = #imageLiteral(resourceName: "SessionGreen32")
-        let configuration = CXProviderConfiguration()
-        configuration.supportsVideo = true
-        configuration.maximumCallGroups = 1
-        configuration.maximumCallsPerCallGroup = 1
-        configuration.supportedHandleTypes = [.generic]
-        configuration.iconTemplateImageData = iconMaskImage.pngData()
-        configuration.includesCallsInRecents = useSystemCallLog
-        
-        let provider: CXProvider = CXProvider(configuration: configuration)
-        return provider
-    }
-    
     // MARK: - Report calls
     
     public func reportFakeCall(info: String) {