299 lines
14 KiB
Swift
299 lines
14 KiB
Swift
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final class JoinOpenGroupVC : BaseVC, UIPageViewControllerDataSource, UIPageViewControllerDelegate, OWSQRScannerDelegate {
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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 = [
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TabBar.Tab(title: NSLocalizedString("vc_join_public_chat_enter_group_url_tab_title", comment: "")) { [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: NSLocalizedString("vc_join_public_chat_scan_qr_code_tab_title", comment: "")) { [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()
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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()
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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 message = NSLocalizedString("vc_join_public_chat_scan_qr_code_explanation", comment: "")
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let result = ScanQRCodeWrapperVC(message: message)
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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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setUpGradientBackground()
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setUpNavBarStyle()
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setNavBarTitle(NSLocalizedString("vc_join_public_chat_title", comment: ""))
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let navigationBar = navigationController!.navigationBar
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// Navigation bar buttons
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let closeButton = UIBarButtonItem(image: #imageLiteral(resourceName: "X"), style: .plain, target: self, action: #selector(close))
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closeButton.tintColor = Colors.text
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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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let tabBarInset: CGFloat
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if #available(iOS 13, *) {
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tabBarInset = navigationBar.height()
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} else {
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tabBarInset = 0
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}
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tabBar.pin(.top, to: .top, of: view, withInset: tabBarInset)
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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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pageVCView.set(.width, to: screen.width)
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let height: CGFloat
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if #available(iOS 13, *) {
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height = navigationController!.view.bounds.height - navigationBar.height() - TabBar.snHeight
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} else {
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let statusBarHeight = UIApplication.shared.statusBarFrame.height
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height = navigationController!.view.bounds.height - navigationBar.height() - TabBar.snHeight - statusBarHeight
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}
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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: OWSQRCodeScanningViewController, didDetectQRCodeWith string: String) {
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joinOpenGroup(with: string)
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}
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fileprivate func joinOpenGroup(with string: 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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if let (room, server, publicKey) = OpenGroupManagerV2.parseV2OpenGroup(from: string) {
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joinV2OpenGroup(room: room, server: server, publicKey: publicKey)
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} else {
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let title = NSLocalizedString("invalid_url", comment: "")
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let message = "Please check the URL you entered and try again."
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showError(title: title, message: message)
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}
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}
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fileprivate func joinV2OpenGroup(room: String, server: String, publicKey: String) {
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guard !isJoining 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.write { transaction in
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OpenGroupManagerV2.shared.add(room: room, server: server, publicKey: publicKey, using: transaction)
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.done(on: DispatchQueue.main) { [weak self] _ in
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self?.presentingViewController!.dismiss(animated: true, completion: nil)
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let appDelegate = UIApplication.shared.delegate as! AppDelegate
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appDelegate.forceSyncConfigurationNowIfNeeded().retainUntilComplete() // FIXME: It's probably cleaner to do this inside addOpenGroup(...)
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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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}
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// MARK: Convenience
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private func showError(title: String, message: String = "") {
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let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
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alert.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: ""), style: .default, handler: nil))
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presentAlert(alert)
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}
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}
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private final class EnterURLVC : UIViewController, UIGestureRecognizerDelegate, OpenGroupSuggestionGridDelegate {
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weak var joinOpenGroupVC: JoinOpenGroupVC!
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// MARK: Components
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private lazy var urlTextView: TextView = {
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let result = TextView(placeholder: NSLocalizedString("vc_enter_chat_url_text_field_hint", comment: ""))
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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 suggestionGrid: OpenGroupSuggestionGrid = {
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let maxWidth = UIScreen.main.bounds.width - Values.largeSpacing * 2
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let result = 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.backgroundColor = .clear
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// Suggestion grid title label
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let suggestionGridTitleLabel = UILabel()
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suggestionGridTitleLabel.textColor = Colors.text
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suggestionGridTitleLabel.font = .boldSystemFont(ofSize: Values.largeFontSize)
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suggestionGridTitleLabel.text = NSLocalizedString("vc_join_open_group_suggestions_title", comment: "")
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suggestionGridTitleLabel.numberOfLines = 0
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suggestionGridTitleLabel.lineBreakMode = .byWordWrapping
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// Next button
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let nextButton = Button(style: .prominentOutline, size: .large)
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nextButton.setTitle(NSLocalizedString("next", comment: ""), for: UIControl.State.normal)
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nextButton.addTarget(self, action: #selector(joinOpenGroup), for: UIControl.Event.touchUpInside)
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let nextButtonContainer = UIView()
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nextButtonContainer.addSubview(nextButton)
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nextButton.pin(.leading, to: .leading, of: nextButtonContainer, withInset: 80)
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nextButton.pin(.top, to: .top, of: nextButtonContainer)
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nextButtonContainer.pin(.trailing, to: .trailing, of: nextButton, withInset: 80)
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nextButtonContainer.pin(.bottom, to: .bottom, of: nextButton)
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// Stack view
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let stackView = UIStackView(arrangedSubviews: [ urlTextView, UIView.spacer(withHeight: Values.mediumSpacing), suggestionGridTitleLabel,
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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(to: view)
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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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}
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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 !suggestionGrid.frame.contains(location)
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}
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func join(_ room: OpenGroupAPIV2.Info) {
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joinOpenGroupVC.joinV2OpenGroup(room: room.id, server: OpenGroupAPIV2.defaultServer, publicKey: OpenGroupAPIV2.defaultServerPublicKey)
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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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}
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private final class ScanQRCodePlaceholderVC : UIViewController {
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weak var joinOpenGroupVC: JoinOpenGroupVC!
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override func viewDidLoad() {
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// Remove background color
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view.backgroundColor = .clear
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// Explanation label
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let explanationLabel = UILabel()
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explanationLabel.textColor = Colors.text
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explanationLabel.font = .systemFont(ofSize: Values.smallFontSize)
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explanationLabel.text = NSLocalizedString("vc_scan_qr_code_camera_access_explanation", comment: "")
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explanationLabel.numberOfLines = 0
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explanationLabel.textAlignment = .center
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explanationLabel.lineBreakMode = .byWordWrapping
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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.setTitleColor(Colors.accent, for: UIControl.State.normal)
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callToActionButton.setTitle(NSLocalizedString("vc_scan_qr_code_grant_camera_access_button_title", comment: ""), for: UIControl.State.normal)
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callToActionButton.addTarget(self, action: #selector(requestCameraAccess), for: UIControl.Event.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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