/*

 Copyright (C) 2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Utilites class to encapsulate messaging with parent application on iPhone.

 */

import WatchConnectivity

class ParentConnector : NSObject, WCSessionDelegate {

    // MARK: Properties

    var wcSession: WCSession?

    var statesToSend = [String]()

    // MARK: Utility methods

    func send(state: String) {

        if let session = wcSession {

            if session.isReachable {

                session.sendMessage(["State": state], replyHandler: nil)

            }

        } else {

            WCSession.default().delegate = self

            WCSession.default().activate()

            statesToSend.append(state)

        }

    }

    // MARK : WCSessionDelegate

    func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {

        if activationState == .activated {

            wcSession = session

            sendPending()

        }

    }

    private func sendPending() {

        if let session = wcSession {

            if session.isReachable {

                for state in statesToSend {

                    session.sendMessage(["State": state], replyHandler: nil)

                }

                statesToSend.removeAll()

            }

        }

    }

}