/*

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

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 This class is responsible for managing interactions with the interface.

 */

import WatchKit

import Foundation

import Dispatch

class InterfaceController: WKInterfaceController, WorkoutManagerDelegate {

    // MARK: Properties

    let workoutManager = WorkoutManager()

    var active = false

    var forehandCount = 0

    var backhandCount = 0

    // MARK: Interface Properties

    @IBOutlet weak var titleLabel: WKInterfaceLabel!

    @IBOutlet weak var backhandCountLabel: WKInterfaceLabel!

    @IBOutlet weak var forehandCountLabel: WKInterfaceLabel!

    // MARK: Initialization

    override init() {

        super.init()

        workoutManager.delegate = self

    }

    // MARK: WKInterfaceController

    override func willActivate() {

        super.willActivate()

        active = true

        // On re-activation, update with the cached values.

        updateLabels()

    }

    override func didDeactivate() {

        super.didDeactivate()

        active = false

    }

    // MARK: Interface Bindings

    @IBAction func start() {

        titleLabel.setText("Workout started")

        workoutManager.startWorkout()

    }

    @IBAction func stop() {

        titleLabel.setText("Workout stopped")

        workoutManager.stopWorkout()

    }

    // MARK: WorkoutManagerDelegate

    func didUpdateForehandSwingCount(_ manager: WorkoutManager, forehandCount: Int) {

        /// Serialize the property access and UI updates on the main queue.

        DispatchQueue.main.async {

            self.forehandCount = forehandCount

            self.updateLabels()

        }

    }

    func didUpdateBackhandSwingCount(_ manager: WorkoutManager, backhandCount: Int) {

        /// Serialize the property access and UI updates on the main queue.

        DispatchQueue.main.async {

            self.backhandCount = backhandCount

            self.updateLabels()

        }

    }

    // MARK: Convenience

    func updateLabels() {

        if active {

            forehandCountLabel.setText("\(forehandCount)")

            backhandCountLabel.setText("\(backhandCount)")

        }

    }

}