433 lines
17 KiB
Swift
433 lines
17 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import AVFoundation
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import GRDB
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import SessionUIKit
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import SessionMessagingKit
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import SessionUtilitiesKit
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final class JoinOpenGroupVC: BaseVC, UIPageViewControllerDataSource, UIPageViewControllerDelegate, QRScannerDelegate {
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private let pageVC = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
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private var pages: [UIViewController] = []
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private var isJoining = false
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private var targetVCIndex: Int?
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// MARK: - Components
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private lazy var tabBar: TabBar = {
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let tabs: [TabBar.Tab] = [
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TabBar.Tab(title: "vc_join_public_chat_enter_group_url_tab_title".localized()) { [weak self] in
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guard let self = self else { return }
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self.pageVC.setViewControllers([ self.pages[0] ], direction: .forward, animated: false, completion: nil)
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},
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TabBar.Tab(title: "vc_join_public_chat_scan_qr_code_tab_title".localized()) { [weak self] in
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guard let self = self else { return }
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self.pageVC.setViewControllers([ self.pages[1] ], direction: .forward, animated: false, completion: nil)
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}
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]
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return TabBar(tabs: tabs)
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}()
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private lazy var enterURLVC: EnterURLVC = {
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let result: EnterURLVC = EnterURLVC()
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result.joinOpenGroupVC = self
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return result
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}()
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private lazy var scanQRCodePlaceholderVC: ScanQRCodePlaceholderVC = {
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let result: ScanQRCodePlaceholderVC = ScanQRCodePlaceholderVC()
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result.joinOpenGroupVC = self
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return result
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}()
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private lazy var scanQRCodeWrapperVC: ScanQRCodeWrapperVC = {
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let result: ScanQRCodeWrapperVC = ScanQRCodeWrapperVC(message: "vc_join_public_chat_scan_qr_code_explanation".localized())
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result.delegate = self
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return result
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}()
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// MARK: - Lifecycle
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override func viewDidLoad() {
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super.viewDidLoad()
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setNavBarTitle("vc_join_public_chat_title".localized())
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// Navigation bar buttons
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let navBarHeight: CGFloat = (navigationController?.navigationBar.frame.size.height ?? 0)
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let closeButton = UIBarButtonItem(image: #imageLiteral(resourceName: "X"), style: .plain, target: self, action: #selector(close))
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closeButton.themeTintColor = .textPrimary
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navigationItem.leftBarButtonItem = closeButton
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// Page VC
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let hasCameraAccess = (AVCaptureDevice.authorizationStatus(for: .video) == .authorized)
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pages = [ enterURLVC, (hasCameraAccess ? scanQRCodeWrapperVC : scanQRCodePlaceholderVC) ]
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pageVC.dataSource = self
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pageVC.delegate = self
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pageVC.setViewControllers([ enterURLVC ], direction: .forward, animated: false, completion: nil)
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// Tab bar
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view.addSubview(tabBar)
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tabBar.pin(.leading, to: .leading, of: view)
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tabBar.pin(
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.top,
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to: .top,
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of: view,
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withInset: (UIDevice.current.isIPad ? navBarHeight + 20 : navBarHeight)
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)
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view.pin(.trailing, to: .trailing, of: tabBar)
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// Page VC constraints
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let pageVCView = pageVC.view!
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view.addSubview(pageVCView)
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pageVCView.pin(.leading, to: .leading, of: view)
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pageVCView.pin(.top, to: .bottom, of: tabBar)
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view.pin(.trailing, to: .trailing, of: pageVCView)
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view.pin(.bottom, to: .bottom, of: pageVCView)
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let screen = UIScreen.main.bounds
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let height: CGFloat = ((navigationController?.view.bounds.height ?? 0) - navBarHeight - TabBar.snHeight)
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pageVCView.set(.width, to: screen.width)
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pageVCView.set(.height, to: height)
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enterURLVC.constrainHeight(to: height)
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scanQRCodePlaceholderVC.constrainHeight(to: height)
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}
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// MARK: - General
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
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guard let index = pages.firstIndex(of: viewController), index != 0 else { return nil }
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return pages[index - 1]
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}
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
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guard let index = pages.firstIndex(of: viewController), index != (pages.count - 1) else { return nil }
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return pages[index + 1]
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}
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fileprivate func handleCameraAccessGranted() {
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pages[1] = scanQRCodeWrapperVC
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pageVC.setViewControllers([ scanQRCodeWrapperVC ], direction: .forward, animated: false, completion: nil)
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}
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// MARK: - Updating
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func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController]) {
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guard let targetVC = pendingViewControllers.first, let index = pages.firstIndex(of: targetVC) else { return }
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targetVCIndex = index
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}
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func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating isFinished: Bool, previousViewControllers: [UIViewController], transitionCompleted isCompleted: Bool) {
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guard isCompleted, let index = targetVCIndex else { return }
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tabBar.selectTab(at: index)
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}
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// MARK: - Interaction
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@objc private func close() {
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dismiss(animated: true, completion: nil)
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}
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func controller(_ controller: QRCodeScanningViewController, didDetectQRCodeWith string: String) {
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joinOpenGroup(with: string)
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}
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fileprivate func joinOpenGroup(with urlString: String) {
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// A V2 open group URL will look like: <optional scheme> + <host> + <optional port> + <room> + <public key>
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// The host doesn't parse if no explicit scheme is provided
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guard let (room, server, publicKey) = OpenGroupManager.parseOpenGroup(from: urlString) else {
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showError(
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title: "invalid_url".localized(),
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message: "Please check the URL you entered and try again."
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)
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return
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}
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joinOpenGroup(roomToken: room, server: server, publicKey: publicKey)
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}
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fileprivate func joinOpenGroup(roomToken: String, server: String, publicKey: String) {
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guard !isJoining, let navigationController: UINavigationController = navigationController else { return }
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isJoining = true
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ModalActivityIndicatorViewController.present(fromViewController: navigationController, canCancel: false) { [weak self] _ in
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Storage.shared
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.writeAsync { db in
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OpenGroupManager.shared.add(
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db,
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roomToken: roomToken,
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server: server,
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publicKey: publicKey,
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isConfigMessage: false
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)
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}
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.done(on: DispatchQueue.main) { [weak self] _ in
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Storage.shared.writeAsync { db in
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try MessageSender.syncConfiguration(db, forceSyncNow: true).retainUntilComplete() // FIXME: It's probably cleaner to do this inside addOpenGroup(...)
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}
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self?.presentingViewController?.dismiss(animated: true, completion: nil)
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}
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.catch(on: DispatchQueue.main) { [weak self] error in
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self?.dismiss(animated: true, completion: nil) // Dismiss the loader
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let title = "Couldn't Join"
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let message = error.localizedDescription
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self?.isJoining = false
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self?.showError(title: title, message: message)
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}
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}
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}
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// MARK: - Convenience
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private func showError(title: String, message: String = "") {
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let confirmationModal: ConfirmationModal = ConfirmationModal(
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info: ConfirmationModal.Info(
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title: title,
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explanation: message,
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cancelTitle: "BUTTON_OK".localized(),
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cancelStyle: .textPrimary
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)
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)
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self.navigationController?.present(confirmationModal, animated: true, completion: nil)
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}
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}
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// MARK: - EnterURLVC
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private final class EnterURLVC: UIViewController, UIGestureRecognizerDelegate, OpenGroupSuggestionGridDelegate {
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weak var joinOpenGroupVC: JoinOpenGroupVC?
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private var isKeyboardShowing = false
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private var bottomConstraint: NSLayoutConstraint!
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private let bottomMargin: CGFloat = (UIDevice.current.isIPad ? Values.largeSpacing : 0)
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// MARK: - UI
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private lazy var urlTextView: TextView = {
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let result: TextView = TextView(placeholder: "vc_enter_chat_url_text_field_hint".localized())
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result.keyboardType = .URL
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result.autocapitalizationType = .none
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result.autocorrectionType = .no
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return result
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}()
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private lazy var suggestionGridTitleLabel: UILabel = {
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let result: UILabel = UILabel()
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result.setContentHuggingPriority(.required, for: .vertical)
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result.font = .boldSystemFont(ofSize: Values.largeFontSize)
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result.text = "vc_join_open_group_suggestions_title".localized()
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result.themeTextColor = .textPrimary
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result.lineBreakMode = .byWordWrapping
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result.numberOfLines = 0
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return result
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}()
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private lazy var suggestionGrid: OpenGroupSuggestionGrid = {
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let maxWidth: CGFloat = (UIScreen.main.bounds.width - Values.largeSpacing * 2)
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let result: OpenGroupSuggestionGrid = OpenGroupSuggestionGrid(maxWidth: maxWidth)
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result.delegate = self
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return result
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}()
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// MARK: - Lifecycle
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override func viewDidLoad() {
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// Remove background color
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view.themeBackgroundColor = .clear
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// Next button
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let nextButton = OutlineButton(style: .regular, size: .large)
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nextButton.setTitle("next".localized(), for: .normal)
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nextButton.addTarget(self, action: #selector(joinOpenGroup), for: .touchUpInside)
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let nextButtonContainer = UIView(
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wrapping: nextButton,
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withInsets: UIEdgeInsets(top: 0, leading: 80, bottom: 0, trailing: 80),
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shouldAdaptForIPadWithWidth: Values.iPadButtonWidth
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)
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// Stack view
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let stackView = UIStackView(arrangedSubviews: [ urlTextView, UIView.spacer(withHeight: Values.mediumSpacing), suggestionGridTitleLabel, UIView.spacer(withHeight: Values.mediumSpacing), suggestionGrid, UIView.vStretchingSpacer(), nextButtonContainer ])
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stackView.axis = .vertical
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stackView.alignment = .fill
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stackView.layoutMargins = UIEdgeInsets(uniform: Values.largeSpacing)
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stackView.isLayoutMarginsRelativeArrangement = true
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view.addSubview(stackView)
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stackView.pin(.leading, to: .leading, of: view)
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stackView.pin(.top, to: .top, of: view)
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view.pin(.trailing, to: .trailing, of: stackView)
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bottomConstraint = view.pin(.bottom, to: .bottom, of: stackView, withInset: bottomMargin)
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// Constraints
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view.set(.width, to: UIScreen.main.bounds.width)
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// Dismiss keyboard on tap
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let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
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tapGestureRecognizer.delegate = self
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view.addGestureRecognizer(tapGestureRecognizer)
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// Listen to keyboard notifications
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(handleKeyboardWillChangeFrameNotification(_:)),
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name: UIResponder.keyboardWillChangeFrameNotification,
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object: nil
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(handleKeyboardWillHideNotification(_:)),
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name: UIResponder.keyboardWillHideNotification,
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object: nil
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)
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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// MARK: - General
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func constrainHeight(to height: CGFloat) {
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view.set(.height, to: height)
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}
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@objc private func dismissKeyboard() {
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urlTextView.resignFirstResponder()
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}
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// MARK: - Interaction
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func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
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let location = gestureRecognizer.location(in: view)
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return (
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(!suggestionGrid.isHidden && !suggestionGrid.frame.contains(location)) ||
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(suggestionGrid.isHidden && location.y > urlTextView.frame.maxY)
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)
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}
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func join(_ room: OpenGroupAPI.Room) {
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joinOpenGroupVC?.joinOpenGroup(
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roomToken: room.token,
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server: OpenGroupAPI.defaultServer,
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publicKey: OpenGroupAPI.defaultServerPublicKey
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)
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}
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@objc private func joinOpenGroup() {
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let url = urlTextView.text?.trimmingCharacters(in: .whitespaces) ?? ""
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joinOpenGroupVC?.joinOpenGroup(with: url)
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}
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// MARK: - Updating
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@objc private func handleKeyboardWillChangeFrameNotification(_ notification: Notification) {
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guard !isKeyboardShowing else { return }
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isKeyboardShowing = true
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guard let endFrame: CGRect = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue else { return }
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guard endFrame.minY < UIScreen.main.bounds.height else { return }
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bottomConstraint.constant = endFrame.size.height + bottomMargin
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UIView.animate(
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withDuration: 0.25,
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animations: { [weak self] in
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self?.view.layoutIfNeeded()
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self?.suggestionGridTitleLabel.alpha = 0
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self?.suggestionGrid.alpha = 0
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},
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completion: { [weak self] _ in
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self?.suggestionGridTitleLabel.isHidden = true
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self?.suggestionGrid.isHidden = true
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}
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)
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}
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@objc private func handleKeyboardWillHideNotification(_ notification: Notification) {
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guard isKeyboardShowing else { return }
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isKeyboardShowing = false
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bottomConstraint.constant = bottomMargin
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UIView.animate(withDuration: 0.25) { [weak self] in
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self?.view.layoutIfNeeded()
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self?.suggestionGridTitleLabel.isHidden = false
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self?.suggestionGridTitleLabel.alpha = 1
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self?.suggestionGrid.isHidden = false
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self?.suggestionGrid.alpha = 1
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}
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}
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}
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private final class ScanQRCodePlaceholderVC: UIViewController {
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weak var joinOpenGroupVC: JoinOpenGroupVC?
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// MARK: - Lifecycle
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override func viewDidLoad() {
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// Remove background color
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view.themeBackgroundColor = .clear
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// Explanation label
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let explanationLabel = UILabel()
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explanationLabel.font = .systemFont(ofSize: Values.smallFontSize)
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explanationLabel.text = "vc_scan_qr_code_camera_access_explanation".localized()
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explanationLabel.themeTextColor = .textPrimary
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explanationLabel.textAlignment = .center
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explanationLabel.lineBreakMode = .byWordWrapping
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explanationLabel.numberOfLines = 0
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// Call to action button
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let callToActionButton = UIButton()
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callToActionButton.titleLabel?.font = .boldSystemFont(ofSize: Values.mediumFontSize)
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callToActionButton.setTitle("vc_scan_qr_code_grant_camera_access_button_title".localized(), for: .normal)
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callToActionButton.setThemeTitleColor(.primary, for: .normal)
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callToActionButton.addTarget(self, action: #selector(requestCameraAccess), for: .touchUpInside)
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// Stack view
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let stackView = UIStackView(arrangedSubviews: [ explanationLabel, callToActionButton ])
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stackView.axis = .vertical
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stackView.spacing = Values.mediumSpacing
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stackView.alignment = .center
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// Constraints
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view.set(.width, to: UIScreen.main.bounds.width)
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view.addSubview(stackView)
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stackView.pin(.leading, to: .leading, of: view, withInset: Values.massiveSpacing)
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view.pin(.trailing, to: .trailing, of: stackView, withInset: Values.massiveSpacing)
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let verticalCenteringConstraint = stackView.center(.vertical, in: view)
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verticalCenteringConstraint.constant = -16 // Makes things appear centered visually
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}
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func constrainHeight(to height: CGFloat) {
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view.set(.height, to: height)
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}
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@objc private func requestCameraAccess() {
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ows_ask(forCameraPermissions: { [weak self] hasCameraAccess in
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if hasCameraAccess {
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self?.joinOpenGroupVC?.handleCameraAccessGranted()
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} else {
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// Do nothing
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}
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})
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}
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}
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