/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Configures the check and request actions for specific private data types.

 */

import UIKit

/**

`PrivateDataAccessProvider` defines an interface for checking the current access level

 and requesting access to a user's private data, and regardless of the data type.

 */

typealias PrivateDataAccessProvider = PrivateDataAccessStatusProvider & PrivateDataAccessRequestProvider

/**

`PrivateDataAccessStatusProvider` defines an interface for checking the current access level to a user's private data,

 regardless of the data type.

 */

protocol PrivateDataAccessStatusProvider {

    var accessLevel: PrivateDataAccessLevel { get }

}

/**

 `PrivateDataAccessRequestProvider` defines an interface for requesting access to a user's private data, regardless of the data type.

 */

protocol PrivateDataAccessRequestProvider {

    /// A typealias describing the completion handler used when requesting access to private data.

    typealias PrivacyActionRequestAccessHandler = (_ result: PrivateDataRequestAccessResult) -> Void

    func requestAccess(completionHandler: @escaping (PrivateDataRequestAccessResult) -> Void)

}

/**

 `PrivateDataAccessActions` contains actions for checking and requesting access to a user's private data.

 */

struct PrivateDataAccessActions {

    let dataType: PrivacyDataType

    var accessStatusAction: PrivateDataAccessStatusProvider?

    var requestAccessAction: PrivateDataAccessRequestProvider?

    init(for type: PrivacyDataType) {

        var selectedActions: AnyObject? = nil

        dataType = type

        switch type {

        case .advertising:

            selectedActions = AdvertisingAccessProvider()

        case .appleMusic:

            selectedActions = MusicAccessProvider()

        case .bluetooth:

            selectedActions = BluetoothAccessProvider()

        case .camera:

            selectedActions = CameraAccessProvider()

        case .calendars:

            selectedActions = EventKitAccessProvider(type: .event)

        case .contacts:

            selectedActions = ContactsAccessProvider()

        case .faceID:

            selectedActions = FaceIDAccessProvider()

        case .health:

            selectedActions = HealthAccessProvider()

        case .home:

            selectedActions = HomeAccessProvider()

        case .location:

            selectedActions = LocationAccessProvider()

        case .microphone:

            selectedActions = MicrophoneAccessProvider()

        case .motion:

            selectedActions = MotionAccessProvider()

        case .nfc:

            selectedActions = NFCAccessProvider()

        case .photosLibrary:

            selectedActions = PhotoAccessProvider()

        case .photosLibraryWriteOnly:

            selectedActions = PhotoWriteOnlyAccessProvider()

        case .reminders:

            selectedActions = EventKitAccessProvider(type: .reminder)

        case .siri:

            selectedActions = SiriAccessProvider()

        case .speechRecognition:

            selectedActions = SpeechRecognitionAccessProvider()

        }

        accessStatusAction = selectedActions as? PrivateDataAccessStatusProvider

        requestAccessAction = selectedActions as? PrivateDataAccessRequestProvider

    }

}