/*

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

See LICENSE.txt for this sample’s licensing information

Abstract:

A view controller that shows a user's profile.

*/

import UIKit

class ProfileViewController: UIViewController {

    // MARK: Properties

    @IBOutlet fileprivate var imageView: UIImageView?

    @IBOutlet fileprivate var nameLabel: UILabel?

    @IBOutlet fileprivate var conversationsLabel: UILabel?

    @IBOutlet fileprivate var photosLabel: UILabel?

    var user: User? {

        didSet {

            if isViewLoaded {

                updateUser()

            }

        }

    }

    var nameText: String? {

        return user?.name

    }

    var conversationsText: String {

        let conversationCount = user?.conversations.count ?? 0

        let localizedStringFormat = NSLocalizedString("%d conversations", comment: "X conversations")

        return String.localizedStringWithFormat(localizedStringFormat, conversationCount)

    }

    var photosText: String {

        let photoCount = user?.conversations.reduce(0) { count, conversation -> Int in

            return count + conversation.photos.count

        } ?? 0

        let localizedStringFormat = NSLocalizedString("%d photos", comment: "X photos")

        return String.localizedStringWithFormat(localizedStringFormat, photoCount)

    }

    // MARK: View Controller

    override func viewDidLoad() {

        super.viewDidLoad()

        updateUser()

    }

    // MARK: IBActions

    @IBAction func closeProfileViewController(_ sender: AnyObject) {

        dismiss(animated: true, completion: nil)

    }

    // MARK: Convenience

    // Updates the user interface with the data from the current user object.

    func updateUser() {

        nameLabel?.text = nameText

        conversationsLabel?.text = conversationsText

        photosLabel?.text = photosText

        imageView?.image = user?.lastPhoto?.image

    }

}