/*

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

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 View controller for the configuration screen.

 */

import UIKit

import HealthKit

class ConfigurationViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {

    // MARK: Properties

    var selectedActivityType: HKWorkoutActivityType

    var selectedLocationType: HKWorkoutSessionLocationType

    let activityTypes: [HKWorkoutActivityType] = [.walking, .running, .hiking]

    let locationTypes: [HKWorkoutSessionLocationType] = [.unknown, .indoor, .outdoor]

    // MARK: IBOutlets

    @IBOutlet var activityTypePicker: UIPickerView!

    @IBOutlet var locationTypePicker: UIPickerView!

    // MARK: Initialization

    required init?(coder: NSCoder) {

        selectedActivityType = activityTypes[0]

        selectedLocationType = locationTypes[0]

        super.init(coder: coder)

    }

    // MARK: UIPickerViewDataSource

    func numberOfComponents(in pickerView: UIPickerView) -> Int {

        return 1

    }

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {

        if pickerView == activityTypePicker {

            return activityTypes.count

        } else if pickerView == locationTypePicker {

            return locationTypes.count

        }

        return 0

    }

    // MARK: UIPickerViewDelegate

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

        if pickerView == activityTypePicker {

            return format(activityType: activityTypes[row])

        } else if pickerView == locationTypePicker {

            return format(locationType: locationTypes[row])

        }

        return nil

    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

        if pickerView == activityTypePicker {

            selectedActivityType = activityTypes[row]

        } else if pickerView == locationTypePicker {

            selectedLocationType = locationTypes[row]

        }

    }

    @IBAction func didTapStartButton() {

        let workoutConfiguration = HKWorkoutConfiguration()

        workoutConfiguration.activityType = selectedActivityType

        workoutConfiguration.locationType = selectedLocationType

        if let workoutViewController = storyboard?.instantiateViewController(withIdentifier: "WorkoutViewController") as? WorkoutViewController {

            workoutViewController.configuration = workoutConfiguration

            present(workoutViewController, animated: true, completion:nil)

        }

    }

}