deltachat-ios/deltachat-ios/View/CustomMessageCell.swift

import UIKit

open class CustomMessageCell: UICollectionViewCell {
    let label = UILabel()

    public override init(frame: CGRect) {
        super.init(frame: frame)
        setupSubviews()
    }

    public required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setupSubviews()
    }

    open func setupSubviews() {
        contentView.addSubview(label)
        label.textAlignment = .center
        label.font = UIFont.italicSystemFont(ofSize: 13)
    }

    open override func layoutSubviews() {
        super.layoutSubviews()
        label.frame = contentView.bounds
    }

    open func configure(with message: MessageType, at _: IndexPath, and _: MessagesCollectionView) {
        // Do stuff
        switch message.kind {
        case let .custom(data):
            guard let systemMessage = data as? String else { return }
            label.text = systemMessage
        default:
            break
        }
    }
}