func checkAndAddIceCandidate()

in Swift/KVSiOSApp/WebRTCClient.swift [149:175]
21 lines of code
3 McCabe index (conditional complexity)

    func checkAndAddIceCandidate(remoteCandidate: RTCIceCandidate, clientId: String) {
        // if answer/offer is not received, it means peer connection is not found. Hold the received ICE candidates in the map.
        if peerConnectionFoundMap.index(forKey: clientId) == nil {
            print("SDP exchange not completed yet. Adding candidate: \(remoteCandidate.sdp) to pending queue")

            // If the entry for the client ID already exists (in case of subsequent ICE candidates), update the queue
            if pendingIceCandidatesMap.index(forKey: clientId) != nil {
                var pendingIceCandidateListByClientId: Set<RTCIceCandidate> = pendingIceCandidatesMap[clientId]!
                pendingIceCandidateListByClientId.insert(remoteCandidate)
                pendingIceCandidatesMap[clientId] = pendingIceCandidateListByClientId
            }
            // If the first ICE candidate before peer connection is received, add entry to map and ICE candidate to a queue
            else {
                var pendingIceCandidateListByClientId = Set<RTCIceCandidate>()
                pendingIceCandidateListByClientId.insert(remoteCandidate)
                pendingIceCandidatesMap[clientId] = pendingIceCandidateListByClientId
            }
        }
        // This is the case where peer connection is established and ICE candidates are received for the established connection
        else {
            print("Peer connection found already")
            // Remote sent us ICE candidates, add to local peer connection
            let peerConnectionCurrent : RTCPeerConnection = peerConnectionFoundMap[clientId]!
            peerConnectionCurrent.add(remoteCandidate);
            print("Added ice candidate \(remoteCandidate.sdp)");
        }
    }