539 lines
22 KiB
Swift
539 lines
22 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import Combine
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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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import SignalUtilitiesKit
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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: nil)
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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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view.themeBackgroundColor = .newConversation_background
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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.rightBarButtonItem = 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(.top, to: .top, of: view)
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tabBar.pin(.trailing, to: .trailing, of: view)
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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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pageVCView.pin(.trailing, to: .trailing, of: view)
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pageVCView.pin(.bottom, to: .bottom, of: view)
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let navBarHeight: CGFloat = (navigationController?.navigationBar.frame.size.height ?? 0)
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let statusBarHeight: CGFloat = UIApplication.shared.statusBarFrame.size.height
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let height: CGFloat = ((navigationController?.view.bounds.height ?? 0) - navBarHeight - TabBar.snHeight - statusBarHeight)
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let size: CGSize = CGSize(width: UIScreen.main.bounds.width, height: height)
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enterURLVC.constrainSize(to: size)
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scanQRCodePlaceholderVC.constrainSize(to: size)
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}
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override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
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super.viewWillTransition(to: size, with: coordinator)
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let height: CGFloat = (size.height - TabBar.snHeight)
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let size: CGSize = CGSize(width: size.width, height: height)
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enterURLVC.constrainSize(to: size)
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scanQRCodePlaceholderVC.constrainSize(to: size)
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enterURLVC.suggestionGrid.refreshLayout(with: size.width - 2 * Values.largeSpacing)
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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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DispatchQueue.main.async {
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self.pages[1] = self.scanQRCodeWrapperVC
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self.pageVC.setViewControllers([ self.scanQRCodeWrapperVC ], direction: .forward, animated: false, completion: nil)
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}
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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) = SessionUtil.parseCommunity(url: urlString) else {
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showError(
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title: "invalid_url".localized(),
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message: "COMMUNITY_ERROR_INVALID_URL".localized()
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)
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return
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}
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joinOpenGroup(roomToken: room, server: server, publicKey: publicKey, shouldOpenCommunity: true)
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}
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fileprivate func joinOpenGroup(roomToken: String, server: String, publicKey: String, shouldOpenCommunity: Bool) {
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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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.writePublisher { 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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calledFromConfigHandling: false
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)
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}
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.flatMap { successfullyAddedGroup in
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OpenGroupManager.shared.performInitialRequestsAfterAdd(
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successfullyAddedGroup: successfullyAddedGroup,
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roomToken: roomToken,
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server: server,
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publicKey: publicKey,
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calledFromConfigHandling: false
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)
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}
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.subscribe(on: DispatchQueue.global(qos: .userInitiated))
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.receive(on: DispatchQueue.main)
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.sinkUntilComplete(
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receiveCompletion: { result in
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switch result {
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case .failure(let error):
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self?.dismiss(animated: true, completion: nil) // Dismiss the loader
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let title = "COMMUNITY_ERROR_GENERIC".localized()
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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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case .finished:
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self?.presentingViewController?.dismiss(animated: true, completion: nil)
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if shouldOpenCommunity {
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SessionApp.presentConversation(
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for: OpenGroup.idFor(roomToken: roomToken, server: server),
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threadVariant: .community,
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isMessageRequest: false,
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action: .compose,
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focusInteractionInfo: nil,
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animated: false
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)
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}
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}
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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 confirmationModal: ConfirmationModal = ConfirmationModal(
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info: ConfirmationModal.Info(
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title: title,
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body: .text(message),
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cancelTitle: "BUTTON_OK".localized(),
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cancelStyle: .alert_text
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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 var keyboardTransitionSnapshot1: UIView?
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private var keyboardTransitionSnapshot2: UIView?
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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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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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private var viewWidth: NSLayoutConstraint?
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private var viewHeight: NSLayoutConstraint?
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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 joinButton = SessionButton(style: .bordered, size: .large)
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joinButton.setTitle("JOIN_COMMUNITY_BUTTON_TITLE".localized(), for: UIControl.State.normal)
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joinButton.addTarget(self, action: #selector(joinOpenGroup), for: UIControl.Event.touchUpInside)
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let joinButtonContainer = UIView(
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wrapping: joinButton,
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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(
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arrangedSubviews: [
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urlTextView,
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UIView.spacer(withHeight: Values.mediumSpacing),
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suggestionGridTitleLabel,
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UIView.spacer(withHeight: Values.mediumSpacing),
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suggestionGrid,
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UIView.vStretchingSpacer(),
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joinButtonContainer
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]
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)
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stackView.axis = .vertical
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stackView.alignment = .fill
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stackView.layoutMargins = UIEdgeInsets(
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top: Values.largeSpacing,
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leading: Values.largeSpacing,
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bottom: Values.smallSpacing,
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trailing: Values.largeSpacing
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)
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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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viewWidth = 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 constrainSize(to size: CGSize) {
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if viewWidth == nil {
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viewWidth = view.set(.width, to: size.width)
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} else {
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viewWidth?.constant = size.width
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}
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if viewHeight == nil {
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viewHeight = view.set(.height, to: size.height)
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} else {
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viewHeight?.constant = size.height
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}
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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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shouldOpenCommunity: true
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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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let duration = max(0.25, ((notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval) ?? 0))
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// Add snapshots for the suggestion grid
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UIView.performWithoutAnimation {
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self.keyboardTransitionSnapshot1 = self.suggestionGridTitleLabel.snapshotView(afterScreenUpdates: false)
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self.keyboardTransitionSnapshot1?.frame = self.suggestionGridTitleLabel.frame
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self.suggestionGridTitleLabel.alpha = 0
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if let snapshot1: UIView = self.keyboardTransitionSnapshot1 {
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self.suggestionGridTitleLabel.superview?.addSubview(snapshot1)
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}
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self.keyboardTransitionSnapshot2 = self.suggestionGrid.snapshotView(afterScreenUpdates: false)
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self.keyboardTransitionSnapshot2?.frame = self.suggestionGrid.frame
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self.suggestionGrid.alpha = 0
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if let snapshot2: UIView = self.keyboardTransitionSnapshot2 {
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self.suggestionGrid.superview?.addSubview(snapshot2)
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}
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self.view.setNeedsLayout()
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self.view.layoutIfNeeded()
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}
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UIView.animate(
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withDuration: duration,
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animations: { [weak self] in
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self?.keyboardTransitionSnapshot1?.alpha = 0
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self?.keyboardTransitionSnapshot2?.alpha = 0
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self?.suggestionGridTitleLabel.isHidden = true
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self?.suggestionGrid.isHidden = true
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self?.bottomConstraint.constant = (endFrame.size.height + (self?.bottomMargin ?? 0))
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self?.view.layoutIfNeeded()
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},
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completion: nil
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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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let duration = max(0.25, ((notification.userInfo?[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval) ?? 0))
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isKeyboardShowing = false
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self.suggestionGrid.alpha = 0
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self.suggestionGridTitleLabel.alpha = 0
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UIView.animate(
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withDuration: duration,
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animations: { [weak self] in
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self?.keyboardTransitionSnapshot1?.alpha = 1
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self?.keyboardTransitionSnapshot2?.alpha = 1
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self?.suggestionGrid.isHidden = false
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self?.suggestionGridTitleLabel.isHidden = false
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self?.bottomConstraint.constant = (self?.bottomMargin ?? 0)
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self?.view.layoutIfNeeded()
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},
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completion: { [weak self] _ in
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self?.keyboardTransitionSnapshot1?.removeFromSuperview()
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self?.keyboardTransitionSnapshot2?.removeFromSuperview()
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self?.keyboardTransitionSnapshot1 = nil
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self?.keyboardTransitionSnapshot2 = nil
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self?.suggestionGridTitleLabel.alpha = 1
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self?.suggestionGrid.alpha = 1
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}
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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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private var viewWidth: NSLayoutConstraint?
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private var viewHeight: NSLayoutConstraint?
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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
|
|
stackView.spacing = Values.mediumSpacing
|
|
stackView.alignment = .center
|
|
|
|
// Constraints
|
|
view.addSubview(stackView)
|
|
stackView.pin(.leading, to: .leading, of: view, withInset: Values.massiveSpacing)
|
|
view.pin(.trailing, to: .trailing, of: stackView, withInset: Values.massiveSpacing)
|
|
|
|
let verticalCenteringConstraint = stackView.center(.vertical, in: view)
|
|
verticalCenteringConstraint.constant = -16 // Makes things appear centered visually
|
|
}
|
|
|
|
func constrainSize(to size: CGSize) {
|
|
if viewWidth == nil {
|
|
viewWidth = view.set(.width, to: size.width)
|
|
} else {
|
|
viewWidth?.constant = size.width
|
|
}
|
|
|
|
if viewHeight == nil {
|
|
viewHeight = view.set(.height, to: size.height)
|
|
} else {
|
|
viewHeight?.constant = size.height
|
|
}
|
|
}
|
|
|
|
@objc private func requestCameraAccess() {
|
|
Permissions.requestCameraPermissionIfNeeded { [weak self] in
|
|
self?.joinOpenGroupVC?.handleCameraAccessGranted()
|
|
}
|
|
}
|
|
}
|