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@@ -0,0 +1,104 @@
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+//
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+// NCLoginQRCode.swift
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+// Nextcloud
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+//
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+// Created by Marino Faggiana on 04/03/2019.
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+// Copyright © 2019 Marino Faggiana. All rights reserved.
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+//
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+// Author Marino Faggiana <marino.faggiana@nextcloud.com>
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+//
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+// This program is free software: you can redistribute it and/or modify
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+// it under the terms of the GNU General Public License as published by
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+// the Free Software Foundation, either version 3 of the License, or
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+// (at your option) any later version.
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+//
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+// This program is distributed in the hope that it will be useful,
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+// but WITHOUT ANY WARRANTY; without even the implied warranty of
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+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+// GNU General Public License for more details.
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+//
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+// You should have received a copy of the GNU General Public License
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+// along with this program. If not, see <http://www.gnu.org/licenses/>.
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+//
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+
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+
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+import Foundation
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+import QRCodeReader
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+
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+class NCLoginQRCode: QRCodeReaderViewControllerDelegate {
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+
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+ lazy var reader: QRCodeReader = QRCodeReader()
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+ weak var delegate: UIViewController?
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+
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+ lazy var readerVC: QRCodeReaderViewController = {
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+ let builder = QRCodeReaderViewControllerBuilder {
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+ $0.reader = QRCodeReader(metadataObjectTypes: [.qr], captureDevicePosition: .back)
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+ $0.showTorchButton = true
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+ $0.preferredStatusBarStyle = .lightContent
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+ $0.showOverlayView = true
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+ $0.rectOfInterest = CGRect(x: 0.2, y: 0.2, width: 0.6, height: 0.6)
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+
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+ $0.reader.stopScanningWhenCodeIsFound = false
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+ }
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+
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+ return QRCodeReaderViewController(builder: builder)
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+ }()
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+
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+
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+ public init(delegate: UIViewController) {
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+ self.delegate = delegate
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+ }
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+
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+ func scanInModalAction() {
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+ guard checkScanPermissions() else { return }
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+
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+ readerVC.modalPresentationStyle = .formSheet
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+ readerVC.delegate = self
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+
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+ readerVC.completionBlock = { (result: QRCodeReaderResult?) in
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+ if let result = result {
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+ print("Completion with result: \(result.value) of type \(result.metadataType)")
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+ }
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+ }
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+
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+ delegate?.present(readerVC, animated: true, completion: nil)
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+ }
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+
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+ private func checkScanPermissions() -> Bool {
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+ do {
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+ return try QRCodeReader.supportsMetadataObjectTypes()
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+ } catch let error as NSError {
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+ let alert: UIAlertController
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+
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+ switch error.code {
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+ case -11852:
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+ alert = UIAlertController(title: "Error", message: "This app is not authorized to use Back Camera.", preferredStyle: .alert)
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+
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+ alert.addAction(UIAlertAction(title: "Setting", style: .default, handler: { (_) in
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+ DispatchQueue.main.async {
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+ if let settingsURL = URL(string: UIApplication.openSettingsURLString) {
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+ UIApplication.shared.open(settingsURL, options: [:], completionHandler: nil)
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+ }
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+ }
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+ }))
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+
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+ alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
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+ default:
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+ alert = UIAlertController(title: "Error", message: "Reader not supported by the current device", preferredStyle: .alert)
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+ alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
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+ }
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+
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+ delegate?.present(alert, animated: true, completion: nil)
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+
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+ return false
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+ }
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+ }
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+
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+ func reader(_ reader: QRCodeReaderViewController, didScanResult result: QRCodeReaderResult) {
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+ reader.stopScanning()
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+ }
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+
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+ func readerDidCancel(_ reader: QRCodeReaderViewController) {
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+ reader.stopScanning()
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+ }
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+}
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marinofaggiana