/*

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

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Demonstrates the APIs to check and request access to contacts.

 */

import UIKit

import Contacts

class ContactsAccessProvider {

    let contactStore = CNContactStore()

}

extension ContactsAccessProvider : PrivateDataAccessProvider {

    var accessLevel: PrivateDataAccessLevel {

        let authorizationStatus = CNContactStore.authorizationStatus(for: .contacts)

        return authorizationStatus.accessLevel

    }

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

        contactStore.requestAccess(for: .contacts) { (_, error) in

            if let error = error {

                print(error)

            }

            DispatchQueue.main.async {

                completionHandler(PrivateDataRequestAccessResult(self.accessLevel))

            }

        }

    }

}

extension CNAuthorizationStatus: PrivateDataAccessLevelConvertible {

    var accessLevel: PrivateDataAccessLevel {

        switch self {

        case .authorized:

            return .granted

        case .denied:

            return .denied

        case .notDetermined:

            return .undetermined

        case .restricted:

            return .restricted

        }

    }

}