Change settings from using SwiftUI to using UIKit

iOS/Settings/FeedbinAccountViewController.swift

@@ -0,0 +1,137 @@
+//
+//  AddFeedbinAccountViewController.swift
+//  NetNewsWire-iOS
+//
+//  Created by Maurice Parker on 5/19/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import UIKit
+import Account
+import RSWeb
+
+class FeedbinAccountViewController: UIViewController {
+
+	@IBOutlet weak var activityIndicator: UIActivityIndicatorView!
+	@IBOutlet weak var cancelBarButtonItem: UIBarButtonItem!
+	@IBOutlet weak var emailTextField: UITextField!
+	@IBOutlet weak var passwordTextField: UITextField!
+	@IBOutlet weak var actionButton: UIButton!
+	
+	@IBOutlet weak var errorMessageLabel: UILabel!
+	
+	weak var account: Account?
+	weak var delegate: AddAccountDismissDelegate?
+
+	override func viewDidLoad() {
+        super.viewDidLoad()
+
+		activityIndicator.isHidden = true
+		emailTextField.delegate = self
+		passwordTextField.delegate = self
+		
+		if let account = account, let credentials = try? account.retrieveCredentials(type: .basic) {
+			actionButton.setTitle(NSLocalizedString("Update Credentials", comment: "Update Credentials"), for: .normal)
+			emailTextField.text = credentials.username
+			passwordTextField.text = credentials.secret
+		} else {
+			actionButton.setTitle(NSLocalizedString("Add Account", comment: "Update Credentials"), for: .normal)
+		}
+	}
+	
+	@IBAction func cancel(_ sender: Any) {
+		dismiss(animated: true, completion: nil)
+		delegate?.dismiss()
+	}
+	
+	@IBAction func action(_ sender: Any) {
+		self.errorMessageLabel.text = nil
+		
+		guard emailTextField.text != nil && passwordTextField.text != nil else {
+			self.errorMessageLabel.text = NSLocalizedString("Username & password required.", comment: "Credentials Error")
+			return
+		}
+	
+		startAnimatingActivityIndicator()
+		disableNavigation()
+		
+		// When you fill in the email address via auto-complete it adds extra whitespace
+		let emailAddress = emailTextField.text?.trimmingCharacters(in: .whitespaces)
+		let credentials = Credentials(type: .basic, username: emailAddress ?? "", secret: passwordTextField.text ?? "")
+		Account.validateCredentials(type: .feedbin, credentials: credentials) { result in
+			
+			self.stopAnimtatingActivityIndicator()
+			self.enableNavigation()
+			
+			switch result {
+			case .success(let credentials):
+				if let credentials = credentials {
+					var newAccount = false
+					if self.account == nil {
+						self.account = AccountManager.shared.createAccount(type: .feedbin)
+						newAccount = true
+					}
+					
+					do {
+						
+						do {
+							try self.account?.removeCredentials(type: .basic)
+						} catch {}
+						try self.account?.storeCredentials(credentials)
+						
+						if newAccount {
+							self.account?.refreshAll() { result in
+								switch result {
+								case .success:
+									break
+								case .failure(let error):
+									self.presentError(error)
+								}
+							}
+						}
+						
+						self.dismiss(animated: true, completion: nil)
+						self.delegate?.dismiss()
+					} catch {
+						self.errorMessageLabel.text = NSLocalizedString("Keychain error while storing credentials.", comment: "Credentials Error")
+					}
+				} else {
+					self.errorMessageLabel.text = NSLocalizedString("Invalid email/password combination.", comment: "Credentials Error")
+				}
+			case .failure:
+				self.errorMessageLabel.text = NSLocalizedString("Network error. Try again later.", comment: "Credentials Error")
+			}
+			
+		}
+	}
+	
+	private func enableNavigation() {
+		self.cancelBarButtonItem.isEnabled = true
+		self.actionButton.isEnabled = true
+	}
+	
+	private func disableNavigation() {
+		cancelBarButtonItem.isEnabled = false
+		actionButton.isEnabled = false
+	}
+	
+	private func startAnimatingActivityIndicator() {
+		activityIndicator.isHidden = false
+		activityIndicator.startAnimating()
+	}
+	
+	private func stopAnimtatingActivityIndicator() {
+		self.activityIndicator.isHidden = true
+		self.activityIndicator.stopAnimating()
+	}
+		
+}
+
+extension FeedbinAccountViewController: UITextFieldDelegate {
+	
+	func textFieldShouldReturn(_ textField: UITextField) -> Bool {
+		textField.resignFirstResponder()
+		return true
+	}
+	
+}