/*

    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 `INResumeWorkoutIntentHandling` protocols to handle requests to resume the current workout.

*/

import Intents

import AscentFramework

class ResumeWorkoutIntentHandler: NSObject, IntentHandler, INResumeWorkoutIntentHandling {

    // MARK: IntentHandler

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

        return intent is INResumeWorkoutIntent

    }

    // MARK: Intent confirmation

    func confirm(resumeWorkout resumeWorkoutIntent: INResumeWorkoutIntent, completion: @escaping (INResumeWorkoutIntentResponse) -> Void) {

        let workoutHistory = WorkoutHistory.load()

        let response: INResumeWorkoutIntentResponse

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

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

        }

        else {

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

        }

        completion(response)

    }

    // MARK: Intent handling

    func handle(resumeWorkout resumeWorkoutIntent: INResumeWorkoutIntent, completion: @escaping (INResumeWorkoutIntentResponse) -> Void) {

        var workoutHistory = WorkoutHistory.load()

        let response: INResumeWorkoutIntentResponse

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

            workoutHistory.resumeActiveWorkout()

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

            let userActivity = NSUserActivity(ascentActivityType: .resumeWorkout)

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

        }

        else {

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

        }

        completion(response)

    }

}