/*

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

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    An object that implements the `IntentHandler` and `INOauseWorkoutIntentHandling` protocols to handle requests to pause the current workout.

*/

import Intents

import AscentFramework

class PauseWorkoutIntentHandler: NSObject, IntentHandler, INPauseWorkoutIntentHandling {

    // MARK: IntentHandler

    func canHandle(_ intent: INIntent) -> Bool {

        return intent is INPauseWorkoutIntent

    }

    // MARK: Intent confirmation

    func confirm(pauseWorkout pauseWorkoutIntent: INPauseWorkoutIntent, completion: @escaping (INPauseWorkoutIntentResponse) -> Void) {

        let workoutHistory = WorkoutHistory.load()

        let response: INPauseWorkoutIntentResponse

        if let workout = workoutHistory.activeWorkout, workout.state == .active {

            response = INPauseWorkoutIntentResponse(code: .continueInApp, userActivity: nil)

        }

        else {

            response = INPauseWorkoutIntentResponse(code: .failureNoMatchingWorkout, userActivity: nil)

        }

        completion(response)

    }

    // MARK: Intent handling

    func handle(pauseWorkout pauseWorkoutIntent: INPauseWorkoutIntent, completion: @escaping (INPauseWorkoutIntentResponse) -> Void) {

        var workoutHistory = WorkoutHistory.load()

        let response: INPauseWorkoutIntentResponse

        if let workout = workoutHistory.activeWorkout, workout.state == .active {

            workoutHistory.pauseActiveWorkout()

            // Create a response with a `NSUserActivity` with the information needed to pause a workout.

            let userActivity = NSUserActivity(ascentActivityType: .pauseWorkout)

            response = INPauseWorkoutIntentResponse(code: .continueInApp, userActivity: userActivity)

        }

        else {

            response = INPauseWorkoutIntentResponse(code: .failureNoMatchingWorkout, userActivity: nil)

        }

        completion(response)

    }

}