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//
// UIAlertController+Extension.swift
// Nextcloud
//
// Created by Henrik Storch on 27.01.22.
// Copyright © 2022 Henrik Storch. All rights reserved.
//
// Author Henrik Storch <henrik.storch@nextcloud.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
import UIKit
import NextcloudKit
extension UIAlertController {
/// Creates a alert controller with a textfield, asking to create a new folder
/// - Parameters:
/// - serverUrl: Server url of the location where the folder should be created
/// - urlBase: UrlBase object
/// - completion: If not` nil` it overrides the default behavior which shows an error using `NCContentPresenter`
/// - Returns: The presentable alert controller
static func createFolder(serverUrl: String, urlBase: NCUserBaseUrl, completion: ((_ error: NKError) -> Void)? = nil) -> UIAlertController {
let alertController = UIAlertController(title: NSLocalizedString("_create_folder_", comment: ""), message: nil, preferredStyle: .alert)
let okAction = UIAlertAction(title: NSLocalizedString("_save_", comment: ""), style: .default, handler: { _ in
guard let fileNameFolder = alertController.textFields?.first?.text else { return }
NCNetworking.shared.createFolder(fileName: fileNameFolder, serverUrl: serverUrl, account: urlBase.account, urlBase: urlBase.urlBase, overwrite: false) { error in
if let completion = completion {
completion(error)
} else if error != .success {
NCContentPresenter.shared.showError(error: error)
} // else: successful, no action
}
})
// text field is initially empty, no action
okAction.isEnabled = false
let cancelAction = UIAlertAction(title: NSLocalizedString("_cancel_", comment: ""), style: .cancel)
alertController.addTextField { textField in
textField.autocapitalizationType = .words
}
// only allow saving if folder name exists
NotificationCenter.default.addObserver(
forName: UITextField.textDidChangeNotification,
object: alertController.textFields?.first,
queue: .main) { _ in
guard let text = alertController.textFields?.first?.text,
let folderName = CCUtility.removeForbiddenCharactersServer(text)?.trimmingCharacters(in: .whitespaces) else { return }
okAction.isEnabled = !folderName.isEmpty && folderName != "." && folderName != ".."
}
alertController.addAction(cancelAction)
alertController.addAction(okAction)
return alertController
}
static func withTextField(titleKey: String, textFieldConfiguration: ((UITextField) -> Void)?, completion: @escaping (String?) -> Void) -> UIAlertController {
let alertController = UIAlertController(title: NSLocalizedString(titleKey, comment: ""), message: "", preferredStyle: .alert)
alertController.addTextField { textField in
textFieldConfiguration?(textField)
}
alertController.addAction(UIAlertAction(title: NSLocalizedString("_cancel_", comment: ""), style: .default) { _ in })
let okAction = UIAlertAction(title: NSLocalizedString("_ok_", comment: ""), style: .default) { _ in
completion(alertController.textFields?.first?.text)
}
alertController.addAction(okAction)
return alertController
}
static func password(titleKey: String, completion: @escaping (String?) -> Void) -> UIAlertController {
return .withTextField(titleKey: titleKey, textFieldConfiguration: { textField in
textField.isSecureTextEntry = true
textField.placeholder = NSLocalizedString("_password_", comment: "")
}, completion: completion)
}
}
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