wata

    @IBAction func didTapEmailButton(_ sender: Any) {
        let authUI = FUIAuth.defaultAuthUI()!
        authUI.delegate = self
        let settings = ActionCodeSettings()
        settings.url = Constants.URLs.login
        settings.handleCodeInApp = true
        settings.setIOSBundleID(Constants.AppInfo.bundleIdentifier)
        authUI.providers = [
            FUIEmailAuth(
                authAuthUI: authUI,

wata

public struct ISOString {
    /// Parse ISO 6709 string.
    /// e.g. "+34.0595-118.4460+091.541/"
    /// SeeAlso: [ISO 6709](https://en.wikipedia.org/wiki/ISO_6709)
    public static func parse(iso6709 text: String?) -> CLLocation? {
        guard
            let results = text?.capture(pattern: "([+-][0-9.]+)([+-][0-9.]+)"),
            let latitude = results[safe: 1] as NSString?,
            let longitude = results[safe: 2] as NSString?
            else { return nil }

wata

import UIKit

final class BackgroundTask {
    private var taskID = UIBackgroundTaskIdentifier.invalid

    func begin(withName taskName: String = #function) {
        taskID = UIApplication.shared.beginBackgroundTask(withName: taskName) {
            UIApplication.shared.endBackgroundTask(self.taskID)
            self.taskID = UIBackgroundTaskIdentifier.invalid
        }

wata

protocol DebuggableOptionSet: OptionSet, CustomDebugStringConvertible {
    static var allOptions: [Self] { get }
    static var allOptionNames: [String] { get }
}

extension DebuggableOptionSet where Self == Self.Element {
    var debugDescription: String {
        var result = ""
        for (index, element) in Self.allOptions.enumerated() {
            if contains(element) {

wata

import Foundation
import FirebaseAuth
import FirebaseUI
import FirebaseFirestore
import FirebaseFunctions
import FirebaseStorage

struct FirebaseError: LocalizedError {
    enum ErrorDomain {
        case auth(code: AuthErrorCode, userInfo: [String: Any])

wata

    override func viewDidLoad() {
        super.viewDidLoad()
        let items: [[Any]] = [
            ["Foo", URL(string: "http://www.africau.edu/images/default/sample.pdf")!]
            ["Bar", URL(string: "http://www.africau.edu/images/default/sample.pdf")!]
        ]
        presentActivityViewControllerRecursively(items: items) { (error, items) in
            if let error = error, let items = items {
                print("Failed to complete activity items: \(items)")
                return

wata

final class FadeAnimator: NSObject, UIViewControllerAnimatedTransitioning {
    private let presenting: Bool

    init(presenting: Bool) {
        self.presenting = presenting
    }

    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 0.3
    }

wata

import UIKit

final class JustTapGestureRecognizer: UITapGestureRecognizer {
    private var timer: Timer?
    private let cancellationTimeInterval = TimeInterval(0.1)

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
        timer = Timer.scheduledTimer(withTimeInterval: cancellationTimeInterval, repeats: false) { [weak self] (_) in
            self?.state = .cancelled
        }

wata

import SwiftUI
import FirebaseUI

struct SignInView: View {
    @State private var user: FirebaseAuth.User?

    var body: some View {
        SignInViewController(user: $user)
    }
}

wata

enum PanAxis {
    case none
    case horizontal
    case vertical
}

/// Returns only translation in either horizontal or vertical direction determined at `UIGestureRecognizer.State.began`.
class DirectionalPanGestureRecognizer: UIPanGestureRecognizer {
    var axis = PanAxis.none
    var directionalTranslation: CGPoint {