312 lines
15 KiB
Swift
312 lines
15 KiB
Swift
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final class JoinPublicChatVC : 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 enterChatURLVC: EnterChatURLVC = {
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let result = EnterChatURLVC()
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result.joinPublicChatVC = 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.joinPublicChatVC = 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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// Set up 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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// Set up page VC
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let hasCameraAccess = (AVCaptureDevice.authorizationStatus(for: .video) == .authorized)
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pages = [ enterChatURLVC, (hasCameraAccess ? scanQRCodeWrapperVC : scanQRCodePlaceholderVC) ]
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pageVC.dataSource = self
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pageVC.delegate = self
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pageVC.setViewControllers([ enterChatURLVC ], direction: .forward, animated: false, completion: nil)
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// Set up 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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// Set up 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() - Values.tabBarHeight
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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() - Values.tabBarHeight - statusBarHeight
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}
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pageVCView.set(.height, to: height)
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enterChatURLVC.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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let chatURL = string
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joinPublicChatIfPossible(with: chatURL)
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}
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fileprivate func joinPublicChatIfPossible(with chatURL: String) {
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guard !isJoining else { return }
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guard let url = URL(string: chatURL), let scheme = url.scheme, scheme == "https", url.host != nil else {
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return showError(title: NSLocalizedString("invalid_url", comment: ""), message: "Please check the URL you entered and try again")
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}
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isJoining = true
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let channelID: UInt64 = 1
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let urlAsString = url.absoluteString
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let userPublicKey = UserDefaults.standard[.masterHexEncodedPublicKey] ?? getUserHexEncodedPublicKey()
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let profileManager = OWSProfileManager.shared()
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let displayName = profileManager.profileNameForRecipient(withID: userPublicKey)
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let profilePictureURL = profileManager.profilePictureURL()
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let profileKey = profileManager.localProfileKey().keyData
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try! Storage.writeSync { transaction in
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transaction.removeObject(forKey: "\(urlAsString).\(channelID)", inCollection: PublicChatAPI.lastMessageServerIDCollection)
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transaction.removeObject(forKey: "\(urlAsString).\(channelID)", inCollection: PublicChatAPI.lastDeletionServerIDCollection)
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}
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ModalActivityIndicatorViewController.present(fromViewController: navigationController!, canCancel: false) { [weak self] _ in
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PublicChatManager.shared.addChat(server: urlAsString, channel: channelID)
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.done(on: DispatchQueue.main) { [weak self] _ in
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let _ = PublicChatAPI.setDisplayName(to: displayName, on: urlAsString)
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let _ = PublicChatAPI.setProfilePictureURL(to: profilePictureURL, using: profileKey, on: urlAsString)
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let _ = PublicChatAPI.join(channelID, on: urlAsString)
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let syncManager = SSKEnvironment.shared.syncManager
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let _ = syncManager.syncAllOpenGroups()
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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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var title = "Couldn't Join"
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var message = ""
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if case OnionRequestAPI.Error.httpRequestFailedAtDestination(let statusCode, _) = error, statusCode == 401 || statusCode == 403 {
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title = "Unauthorized"
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message = "Please ask the open group operator to add you to the group."
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}
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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 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 EnterChatURLVC : UIViewController {
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weak var joinPublicChatVC: JoinPublicChatVC!
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private var bottomConstraint: NSLayoutConstraint!
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// MARK: Components
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private lazy var chatURLTextField: TextField = {
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let result = TextField(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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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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// 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(joinPublicChatIfPossible), 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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// Set up stack view
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let stackView = UIStackView(arrangedSubviews: [ chatURLTextField, UIView.vStretchingSpacer(), nextButtonContainer ])
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stackView.axis = .vertical
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stackView.alignment = .fill
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stackView.layoutMargins = UIEdgeInsets(top: Values.largeSpacing, left: Values.largeSpacing, bottom: Values.largeSpacing, right: 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)
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// Set up width constraint
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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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view.addGestureRecognizer(tapGestureRecognizer)
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// Listen to keyboard notifications
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let notificationCenter = NotificationCenter.default
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillChangeFrameNotification(_:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
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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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chatURLTextField.resignFirstResponder()
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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 let newHeight = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.size.height else { return }
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bottomConstraint.constant = newHeight
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UIView.animate(withDuration: 0.25) {
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self.view.layoutIfNeeded()
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}
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}
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@objc private func handleKeyboardWillHideNotification(_ notification: Notification) {
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bottomConstraint.constant = 0
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UIView.animate(withDuration: 0.25) {
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self.view.layoutIfNeeded()
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}
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}
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// MARK: Interaction
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@objc private func joinPublicChatIfPossible() {
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var chatURL = chatURLTextField.text?.trimmingCharacters(in: .whitespaces) ?? ""
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if !chatURL.lowercased().starts(with: "http") {
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chatURL = "https://" + chatURL
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}
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joinPublicChatVC.joinPublicChatIfPossible(with: chatURL)
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}
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}
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private final class ScanQRCodePlaceholderVC : UIViewController {
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weak var joinPublicChatVC: JoinPublicChatVC!
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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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// Set up 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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// Set up 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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// Set up 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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// Set up 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?.joinPublicChatVC.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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