class FeedCell: UICollectionViewCell{
override init(frame: CGRect) {
    super.init(frame: frame)
    setupViews()
}

//Аватар автора
let authorAvatar: UIImageView = {
    let iv = UIImageView()
    iv.image = UIImage(named: "author")
    iv.layer.cornerRadius = 15
    iv.layer.masksToBounds = true
    iv.translatesAutoresizingMaskIntoConstraints = false
    return iv
}()

//Имя автора
let authorNamedLabel: UILabel = {
    let lb = UILabel()
    lb.text = "Иван Калягин"
    lb.font = lb.font.withSize(14)
    return lb
}()

let favoriteButtonStar: UIButton = {
    let bt = UIButton()
    bt.setImage(UIImage(named:"FeedStarOff"),for: .normal)
    return bt
}()

//Картинка статьи
let thumbnailImageView: UIImageView = {
    let iv = UIImageView()
    iv.image = UIImage(named: "thumbnail")
    iv.clipsToBounds = true
    iv.contentMode = .scaleAspectFill
    //        iv.clipsToBounds = true
    iv.translatesAutoresizingMaskIntoConstraints = true
    return iv
}()

//Заголовок статьи
let titlePostLabel: UILabel = {

    let tv = UILabel()
    tv.text = "6 причин, почему не нужно следовать общественному мнению"
    tv.text = tv.text?.uppercased()
    tv.numberOfLines = 0
    tv.font = UIFont.systemFont(ofSize: 16, weight: .semibold)
    tv.setLineSpacing(lineSpacing: 2.0)

    return tv
}()

let categoryPostLabel: UILabel = {
    let tv = UILabel()
    tv.text = "ОБРАЗ ЖИЗНИ"
    tv.text = tv.text?.uppercased()
    tv.numberOfLines = 0
    tv.font = UIFont.systemFont(ofSize: 12, weight: .semibold)
    tv.textColor = UIColor(displayP3Red: 0.64, green: 0.64, blue: 0.64, alpha: 1.0)

    return tv
}()
let dataPostLabel: UILabel = {
    let tv = UILabel()
    tv.text = "16.01.2018"
    tv.numberOfLines = 0
    tv.font = UIFont.systemFont(ofSize: 12, weight: .regular)
    tv.textColor = UIColor.black
    tv.textColor = UIColor(displayP3Red: 0.52, green: 0.52, blue: 0.52, alpha: 1.0)

    return tv
}()

let shortTextCut: UILabel = {
    let tv = UILabel()
    tv.text = "Сама наука восстала против этого, и теперь ты не будешь поддаваться мнению большинства, а будешь формировать собственные взгляды."
    tv.numberOfLines = 0
    tv.font = UIFont.systemFont(ofSize: 14, weight: .regular)

    return tv
}()

let commentsToPost: UILabel = {
    let tv = UILabel()
    tv.text = "5 Комментариев"
    tv.numberOfLines = 0
    tv.textColor = UIColor(displayP3Red: 0.52, green: 0.52, blue: 0.52, alpha: 1.0)
    tv.font = UIFont.systemFont(ofSize: 13, weight: .light)

    return tv
}()

let commentIcon: UIImageView = {
    let iv = UIImageView()
    iv.image = UIImage(named: "Comment")
    iv.translatesAutoresizingMaskIntoConstraints = false
    return iv
}()

func setupViews(){
    addSubview(authorAvatar)
    addSubview(authorNamedLabel)
    addSubview(favoriteButtonStar)
    addSubview(thumbnailImageView)
    addSubview(titlePostLabel)
    addSubview(categoryPostLabel)
    addSubview(dataPostLabel)
    addSubview(shortTextCut)
    addSubview(commentsToPost)
    addSubview(commentIcon)

    addConstraintWithFormat(format: "H:|-15-[v0(30)]-10-[v1]-[v2]-15-|", views: authorAvatar,authorNamedLabel,favoriteButtonStar)
    addConstraintWithFormat(format: "V:|-15-[v0(30)]", views: authorAvatar)
    addConstraintWithFormat(format: "V:|-15-[v0(30)]", views: authorAvatar)
    addConstraint(NSLayoutConstraint(item: authorNamedLabel, attribute: .top, relatedBy: .equal, toItem: authorAvatar, attribute: .top, multiplier: 1, constant: 6))
    addConstraint(NSLayoutConstraint(item: favoriteButtonStar, attribute: .top, relatedBy: .equal, toItem: authorAvatar, attribute: .top, multiplier: 1, constant: 0))

    addConstraintWithFormat(format: "H:|[v0]|", views: thumbnailImageView)
    addConstraint(NSLayoutConstraint(item: thumbnailImageView, attribute: .top, relatedBy: .equal, toItem: authorAvatar, attribute: .bottom, multiplier: 1, constant: 8))

    addConstraintWithFormat(format: "H:|-15-[v0]-15-|", views: titlePostLabel)
    addConstraint(NSLayoutConstraint(item: titlePostLabel, attribute: .top, relatedBy: .equal, toItem: thumbnailImageView, attribute: .bottom, multiplier: 1, constant: 13))

    addConstraintWithFormat(format: "H:|-15-[v0]-13-[v1]", views: categoryPostLabel, dataPostLabel)
    addConstraint(NSLayoutConstraint(item: categoryPostLabel, attribute: .top, relatedBy: .equal, toItem: titlePostLabel, attribute: .bottom, multiplier: 1, constant: 9))
    addConstraint(NSLayoutConstraint(item: dataPostLabel, attribute: .top, relatedBy: .equal, toItem: categoryPostLabel, attribute: .top, multiplier: 1, constant: 0))

    addConstraintWithFormat(format: "H:|-15-[v0]-15-|", views: shortTextCut)
    addConstraint(NSLayoutConstraint(item: shortTextCut, attribute: .top, relatedBy: .equal, toItem: categoryPostLabel, attribute: .bottom, multiplier: 1, constant: 10))

    addConstraintWithFormat(format: "H:|-15-[v0(12)]-7-[v1]|", views: commentIcon,commentsToPost)
    addConstraint(NSLayoutConstraint(item: commentIcon, attribute: .top, relatedBy: .equal, toItem: shortTextCut, attribute: .bottom, multiplier: 1, constant: 15))
    addConstraint(NSLayoutConstraint(item: commentIcon, attribute: .top, relatedBy: .equal, toItem: commentsToPost, attribute: .top, multiplier: 1, constant: 3))
    addConstraint(NSLayoutConstraint(item: commentIcon, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 12))
    addConstraint(NSLayoutConstraint(item: commentIcon, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 12))
}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

class FeedController: UICollectionViewController, UICollectionViewDelegateFlowLayout {

override func viewDidLoad() {
    super.viewDidLoad()

    navigationItem.title = "Свежее"

    collectionView?.backgroundColor = UIColor.white
    collectionView?.showsHorizontalScrollIndicator = false
    collectionView?.showsVerticalScrollIndicator = false
    // Do any additional setup after loading the view, typically from a nib.

    collectionView?.register(FeedCell.self, forCellWithReuseIdentifier: "cellId")
}

override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 5
}

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellId", for: indexPath)

    return cell
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {





    return CGSize(width: view.frame.width, height: 800)
}