An extension to UIFont returning UIFont based on pixel size

UIFont+GetFontBySize.swift

// This code was reshaped from Joel Fischer's answer from here:
// https://stackoverflow.com/questions/8812192/how-to-set-font-size-to-fill-uilabel-height/17622215#17622215


import UIKit

extension UIFont {
    
    static func getFont(name: String, maxSize: CGFloat, heightToFit: CGFloat) -> UIFont {
        
        let testString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
        
        var font: UIFont
        var tempMax: CGFloat = maxSize
        var tempMin: CGFloat = 1
        
        while (ceil(tempMin) != ceil(tempMax)){
            let testedSize = (tempMax + tempMin) / 2


            font = UIFont(name: name, size: testedSize) ?? UIFont.systemFont(ofSize: testedSize)
            let attributedString = NSAttributedString(string: testString, attributes: [NSAttributedString.Key.font: font])

            let textFrame = attributedString.boundingRect(with: CGSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude), options: NSStringDrawingOptions.usesLineFragmentOrigin , context: nil)

            let difference = heightToFit - textFrame.height
            if(difference > 0){
                tempMin = testedSize
            }else{
                tempMax = testedSize
            }
            
        }
        
        return UIFont(name: name, size: tempMin - 1) ?? UIFont.systemFont(ofSize: tempMin - 1)
    }
}