henrik-dmg

import AuthenticationServices
import CryptoKit
import FirebaseAuth
import Foundation
import SwiftUI

// Adapted from https://firebase.google.com/docs/auth/ios/apple?authuser=0

@available(iOS 14.0, OSX 10.16, tvOS 14.0, *)
@available(watchOS, unavailable)

henrik-dmg

extension CGSize {

    func sizeFittingPreservingAspectRatio(_ otherSize: CGSize) -> CGSize {
        if height <= width {
            let scaledWidth = (otherSize.height / height) * width
            return CGSize(width: scaledWidth, height: otherSize.height)
        } else {
            let scaledHeight = (otherSize.width / width) * height
            return CGSize(width: otherSize.width, height: scaledHeight)
        }

henrik-dmg

import Foundation
import UIKit

public extension UIFont {
    static func preferredFont(forTextStyle style: UIFont.TextStyle, weight: UIFont.Weight) -> UIFont {
        let font = style.withWeight(weight)
        let fontMetrics = UIFontMetrics(forTextStyle: style)
        return fontMetrics.scaledFont(for: font)
    }
}

henrik-dmg

af             Afrikaans
af_NA          Afrikaans (Namibia)
af_ZA          Afrikaans (South Africa)
agq            Aghem
agq_CM         Aghem (Cameroon)
ak             Akan
ak_GH          Akan (Ghana)
am             Amharic
am_ET          Amharic (Ethiopia)
ar             Arabic

henrik-dmg

extension UIView {
    func roundCorners(_ corners: Corners, radius: CGFloat) {
        var cornerMasks = [CACornerMask]()
        
        // Top left corner
        switch corners {
        case .all, .top, .topLeft, .allButTopRight, .allButBottomLeft, .allButBottomRight, .topLeftBottomRight:
            cornerMasks.append(CACornerMask(rawValue: UIRectCorner.topLeft.rawValue))
        default:
            break

henrik-dmg

func generateQRCode(from data: Data) -> UIImage? {
	if let filter = CIFilter(name: "CIQRCodeGenerator") {
		filter.setValue(data, forKey: "inputMessage")

		guard let qrCodeImage = filter.outputImage else { return nil }
            
		let scaleX = self.codeView.frame.size.width / qrCodeImage.extent.size.width
		let scaleY = self.codeView.frame.size.height / qrCodeImage.extent.size.height
		let transform = CGAffineTransform(scaleX: scaleX, y: scaleY)