//  Copyright © 2018 Keith Harrison. All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are met:
//
//  1. Redistributions of source code must retain the above copyright
//  notice, this list of conditions and the following disclaimer.
//
//  2. Redistributions in binary form must reproduce the above copyright
//  notice, this list of conditions and the following disclaimer in the
//  documentation and/or other materials provided with the distribution.
//
//  3. Neither the name of the copyright holder nor the names of its
//  contributors may be used to endorse or promote products derived from
//  this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
//  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
//  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//  POSSIBILITY OF SUCH DAMAGE.

import UIKit

final class QuoteViewController: UIViewController {

    @IBOutlet private var titleLabel: UILabel!
    @IBOutlet private var textLabel: UILabel!
    @IBOutlet private var footnoteLabel: UILabel!

    var quote: Quote? {
        didSet {
            configureView()
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        configureView()

        if #available(iOS 10, *) {
            [titleLabel, textLabel, footnoteLabel].forEach {
                $0?.adjustsFontForContentSizeCategory = true
            }
        } else {
            NotificationCenter.default.addObserver(self, selector: #selector(updateTextStyles(_:)), name: UIContentSizeCategory.didChangeNotification, object: nil)
        }
    }

    private func configureView() {
        titleLabel?.text = quote?.title
        textLabel?.text = quote?.text
        footnoteLabel?.text = quote?.footnote
    }

    @objc private func updateTextStyles(_ notification: Notification) {
        titleLabel.font = UIFont.preferredFont(forTextStyle: .headline)
        textLabel.font = UIFont.preferredFont(forTextStyle: .body)
        footnoteLabel.font = UIFont.preferredFont(forTextStyle: .footnote)
    }
}
