/*

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

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    Extends NSUserActivity to more easily encapsulate types of activity a user would perform with a workout.

*/

import Foundation

extension NSUserActivity {

    // MARK: Types

    public enum AscentActivityType {

        case start(Workout)

        case pauseWorkout

        case resumeWorkout

        case cancelWorkout

        case endWorkout

    }

    // MARK: Computed properties

    public var ascentActivityType: AscentActivityType? {

        switch activityType {

            case "com.example.apple-samplecode.Ascent.startWorkout":

                guard let dictionary = userInfo?["workout"] as? [String: AnyObject] else { return nil }

                guard let workout = Workout(dictionaryRepresentation: dictionary) else { return nil }

                return .start(workout)

            case "com.example.apple-samplecode.Ascent.pauseWorkout":

                return .pauseWorkout

            case "com.example.apple-samplecode.Ascent.resumeWorkout":

                return .resumeWorkout

            case "com.example.apple-samplecode.Ascent.cancelWorkout":

                return .cancelWorkout

            case "com.example.apple-samplecode.Ascent.endWorkout":

                return .endWorkout

            default:

                return nil

        }

    }

    // MARK: Initialization

    public convenience init(ascentActivityType: AscentActivityType) {

        switch ascentActivityType {

            case .start(let workout):

                self.init(activityType: "com.example.apple-samplecode.Ascent.startWorkout")

                userInfo = ["workout": workout.dictionaryRepresentation as AnyObject]

            case .pauseWorkout:

                self.init(activityType: "com.example.apple-samplecode.Ascent.pauseWorkout")

            case .resumeWorkout:

                self.init(activityType: "com.example.apple-samplecode.Ascent.resumeWorkout")

            case .cancelWorkout:

                self.init(activityType: "com.example.apple-samplecode.Ascent.cancelWorkout")

            case .endWorkout:

                self.init(activityType: "com.example.apple-samplecode.Ascent.endWorkout")

        }

    }

}