Add banner to subscription action

Wikipedia/Code/TalkPageDataController.swift

@@ -65,6 +65,17 @@ class TalkPageDataController {
         talkPageFetcher.subscribeToTopic(talkPageTitle: pageTitle, siteURL: siteURL, topic: topicName, shouldSubscribe: shouldSubscribe, completion: completion)
     }
 
+    func fetchSubscriptions(for topics: [String], completion: @escaping (Result<[String], Error>) -> Void) {
+        talkPageFetcher.getSubscribedTopics(siteURL: siteURL, topics: topics) { result in
+            switch result {
+            case let .success(result):
+                completion(.success(result))
+            case let .failure(error):
+                completion(.failure(error))
+            }
+        }
+    }
+
     // MARK: Private
 
     private func fetchTalkPageItems(dispatchGroup group: DispatchGroup, completion: @escaping ([TalkPageItem], [Error]) -> Void) {

Wikipedia/Code/TalkPageViewController.swift

@@ -1,5 +1,6 @@
 import UIKit
 import WMF
+import CocoaLumberjackSwift
 
 class TalkPageViewController: ViewController {
 
@@ -23,63 +24,63 @@ class TalkPageViewController: ViewController {
     // MARK: - Overflow menu properties
 
     fileprivate var userTalkOverflowSubmenuActions: [UIAction] {
-        let contributionsAction = UIAction(title: MenuLocalizedStrings.contributions, image: UIImage(named: "user-contributions"), handler: { _ in
+        let contributionsAction = UIAction(title: TalkPageLocalizedStrings.contributions, image: UIImage(named: "user-contributions"), handler: { _ in
         })
 
-        let userGroupsAction = UIAction(title: MenuLocalizedStrings.userGroups, image: UIImage(systemName: "person.2"), handler: { _ in
+        let userGroupsAction = UIAction(title: TalkPageLocalizedStrings.userGroups, image: UIImage(systemName: "person.2"), handler: { _ in
         })
 
-        let logsAction = UIAction(title: MenuLocalizedStrings.logs, image: UIImage(systemName: "list.bullet"), handler: { _ in
+        let logsAction = UIAction(title: TalkPageLocalizedStrings.logs, image: UIImage(systemName: "list.bullet"), handler: { _ in
         })
 
         return [contributionsAction, userGroupsAction, logsAction]
     }
 
     fileprivate var overflowSubmenuActions: [UIAction] {
-        
-        let goToArchivesAction = UIAction(title: MenuLocalizedStrings.archives, image: UIImage(systemName: "archivebox"), handler: { _ in
+
+        let goToArchivesAction = UIAction(title: TalkPageLocalizedStrings.archives, image: UIImage(systemName: "archivebox"), handler: { _ in
         })
-        
-        let pageInfoAction = UIAction(title: MenuLocalizedStrings.pageInfo, image: UIImage(systemName: "info.circle"), handler: { _ in
+
+        let pageInfoAction = UIAction(title: TalkPageLocalizedStrings.pageInfo, image: UIImage(systemName: "info.circle"), handler: { _ in
         })
-        
-        let goToPermalinkAction = UIAction(title: MenuLocalizedStrings.permaLink, image: UIImage(systemName: "link"), handler: { _ in
+
+        let goToPermalinkAction = UIAction(title: TalkPageLocalizedStrings.permaLink, image: UIImage(systemName: "link"), handler: { _ in
         })
-        
-        let relatedLinksAction = UIAction(title: MenuLocalizedStrings.relatedLinks, image: UIImage(systemName: "arrowshape.turn.up.forward"), handler: { _ in
+
+        let relatedLinksAction = UIAction(title: TalkPageLocalizedStrings.relatedLinks, image: UIImage(systemName: "arrowshape.turn.up.forward"), handler: { _ in
         })
-        
+
         var actions = [goToArchivesAction, pageInfoAction, goToPermalinkAction, relatedLinksAction]
-        
+
         if viewModel.pageType == .user {
-            let aboutTalkUserPagesAction = UIAction(title: MenuLocalizedStrings.aboutUserTalk, image: UIImage(systemName: "doc.plaintext"), handler: { _ in
-                
+            let aboutTalkUserPagesAction = UIAction(title: TalkPageLocalizedStrings.aboutUserTalk, image: UIImage(systemName: "doc.plaintext"), handler: { _ in
+
             })
             actions.insert(contentsOf: userTalkOverflowSubmenuActions, at: 1)
             actions.append(aboutTalkUserPagesAction)
         } else {
-            let changeLanguageAction = UIAction(title: MenuLocalizedStrings.changeLanguage, image: UIImage(named: "language-talk-page"), handler: { _ in
+            let changeLanguageAction = UIAction(title: TalkPageLocalizedStrings.changeLanguage, image: UIImage(named: "language-talk-page"), handler: { _ in
             })
-            let aboutTalkPagesAction = UIAction(title: MenuLocalizedStrings.aboutArticleTalk, image: UIImage(systemName: "doc.plaintext"), handler: { _ in
-                
+            let aboutTalkPagesAction = UIAction(title: TalkPageLocalizedStrings.aboutArticleTalk, image: UIImage(systemName: "doc.plaintext"), handler: { _ in
+
             })
             actions.insert(changeLanguageAction, at: 3)
             actions.append(aboutTalkPagesAction)
         }
         return actions
     }
-    
+
     var overflowMenu: UIMenu {
 
-        let openAllAction = UIAction(title: MenuLocalizedStrings.openAllThreads, image: UIImage(systemName: "square.stack"), handler: { _ in
-           
+        let openAllAction = UIAction(title: TalkPageLocalizedStrings.openAllThreads, image: UIImage(systemName: "square.stack"), handler: { _ in
+
         })
 
         let revisionHistoryAction = UIAction(title: CommonStrings.revisionHistory, image: UIImage(systemName: "clock.arrow.circlepath"), handler: { _ in
 
         })
 
-        let openInWebAction = UIAction(title: MenuLocalizedStrings.readInWeb, image: UIImage(systemName: "display"), handler: { _ in
+        let openInWebAction = UIAction(title: TalkPageLocalizedStrings.readInWeb, image: UIImage(systemName: "display"), handler: { _ in
 
         })
 
@@ -97,21 +98,21 @@ class TalkPageViewController: ViewController {
 
         viewModel.delegate = self
     }
-
+    
     required init?(coder aDecoder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
-
+    
     override func loadView() {
         let talkPageView = TalkPageView(frame: UIScreen.main.bounds)
         view = talkPageView
         scrollView = talkPageView.collectionView
     }
-
+    
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        navigationItem.title = WMFLocalizedString("talk-pages-view-title", value: "Talk", comment: "Title of user and article talk pages view.")
+        navigationItem.title = TalkPageLocalizedStrings.title
 
         // Not adding fallback for other versions since we're dropping iOS 13 on the next release
         // TODO: this version check should be removed
@@ -120,10 +121,10 @@ class TalkPageViewController: ViewController {
             navigationItem.rightBarButtonItem = rightBarButtonItem
             rightBarButtonItem.tintColor = theme.colors.link
         }
-       
+
         talkPageView.collectionView.dataSource = self
         talkPageView.collectionView.delegate = self
- 
+
         // Needed for reply compose views to display on top of navigation bar.
         navigationController?.setNavigationBarHidden(true, animated: false)
         navigationMode = .forceBar
@@ -136,27 +137,26 @@ class TalkPageViewController: ViewController {
     private func setupHeaderView() {
         let headerView = TalkPageHeaderView()
         self.headerView = headerView
-
+        
         headerView.configure(viewModel: viewModel)
         navigationBar.isBarHidingEnabled = false
         navigationBar.isUnderBarViewHidingEnabled = true
         navigationBar.allowsUnderbarHitsFallThrough = true
-
+        
         navigationBar.addUnderNavigationBarView(headerView, shouldIgnoreSafeArea: true)
         useNavigationBarVisibleHeightForScrollViewInsets = false
         updateScrollViewInsets()
-
+        
         headerView.apply(theme: theme)
     }
 
     // MARK: - Public
 
-
     // MARK: - Themeable
 
     override func apply(theme: Theme) {
         super.apply(theme: theme)
-
+        
         viewModel.theme = theme
         headerView?.apply(theme: theme)
         talkPageView.apply(theme: theme)
@@ -206,7 +206,7 @@ class TalkPageViewController: ViewController {
         talkPageURLComponents?.path = "/wiki/\(viewModel.pageTitle)"
         return talkPageURLComponents?.url
     }
-
+    
     @objc fileprivate func userDidTapShareButton() {
         guard let talkPageURL = talkPageURL else {
             return
@@ -234,32 +234,44 @@ class TalkPageViewController: ViewController {
 
         toolbar.items = [shareButton,  .flexibleSpaceToolbar(), revisionButton, .flexibleSpaceToolbar(), findButton,.flexibleSpaceToolbar(), addTopicButton]
 
-        shareButton.accessibilityLabel = WMFLocalizedString("talk-page-share-button", value: "Share talk page", comment: "Title for share talk page button")
-        findButton.accessibilityLabel = WMFLocalizedString("talk-page-find-in-page-button", value: "Find in page", comment: "Title for find content in page button")
+        shareButton.accessibilityLabel = TalkPageLocalizedStrings.shareButtonAccesibilityLabel
+        findButton.accessibilityLabel = TalkPageLocalizedStrings.findButtonAccesibilityLabel
         revisionButton.accessibilityLabel = CommonStrings.revisionHistory
-        addTopicButton.accessibilityLabel = WMFLocalizedString("talk-page-add-topic-button", value: "Add topic", comment: "Title for add topic to talk page button")
+        addTopicButton.accessibilityLabel = TalkPageLocalizedStrings.addTopicButtonAccesibilityLabel
     }
-
+
+    fileprivate func handleSubscriptionAlert(isSubscribedToTopic: Bool) {
+        let title = isSubscribedToTopic ? TalkPageLocalizedStrings.subscribedAlertTitle : TalkPageLocalizedStrings.unsubscribedAlertTitle
+        let subtitle = isSubscribedToTopic ? TalkPageLocalizedStrings.subscribedAlertSubtitle : TalkPageLocalizedStrings.unsubscribedAlertSubtitle
+        let image = isSubscribedToTopic ? UIImage(systemName: "bell.fill") : UIImage(systemName: "bell.slash.fill")
+
+        if UIAccessibility.isVoiceOverRunning {
+            UIAccessibility.post(notification: UIAccessibility.Notification.announcement, argument: title)
+        } else {
+            WMFAlertManager.sharedInstance.showBottomAlertWithMessage(title, subtitle: subtitle, image: image ?? UIImage(), dismissPreviousAlerts: true)
+        }
+    }
+
 }
 
 // MARK: - UICollectionViewDelegate, UICollectionViewDataSource
 
 extension TalkPageViewController: UICollectionViewDelegate, UICollectionViewDataSource {
-
+    
     func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
         return viewModel.topics.count
     }
-
+    
     func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
         guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: TalkPageCell.reuseIdentifier, for: indexPath) as? TalkPageCell else {
-             return UICollectionViewCell()
+            return UICollectionViewCell()
         }
 
         let viewModel = viewModel.topics[indexPath.row]
 
         cell.delegate = self
         cell.replyDelegate = self
-        
+
         cell.configure(viewModel: viewModel)
         cell.apply(theme: theme)
 
@@ -270,38 +282,37 @@ extension TalkPageViewController: UICollectionViewDelegate, UICollectionViewData
         guard let cell = collectionView.cellForItem(at: indexPath) as? TalkPageCell else {
             return
         }
-
+        
         userDidTapDisclosureButton(cellViewModel: cell.viewModel, cell: cell)
     }
 
 }
 
 // MARK: - TalkPageCellDelegate
 
-// TODO
 extension TalkPageViewController: TalkPageCellDelegate {
-
+    
     func userDidTapDisclosureButton(cellViewModel: TalkPageCellViewModel?, cell: TalkPageCell) {
         guard let cellViewModel = cellViewModel, let indexOfConfiguredCell = viewModel.topics.firstIndex(where: {$0 === cellViewModel}) else {
             return
         }
-
+        
         let configuredCellViewModel = viewModel.topics[indexOfConfiguredCell]
         configuredCellViewModel.isThreadExpanded.toggle()
 
         cell.configure(viewModel: configuredCellViewModel)
         talkPageView.collectionView.collectionViewLayout.invalidateLayout()
     }
-
+    
     func userDidTapSubscribeButton(cellViewModel: TalkPageCellViewModel?, cell: TalkPageCell) {
         guard let cellViewModel = cellViewModel, let indexOfConfiguredCell = viewModel.topics.firstIndex(where: {$0 === cellViewModel}) else {
             return
         }
-
+        
         let configuredCellViewModel = viewModel.topics[indexOfConfiguredCell]
         configuredCellViewModel.isSubscribed.toggle()
-
         cell.configure(viewModel: configuredCellViewModel)
+        self.handleSubscriptionAlert(isSubscribedToTopic: configuredCellViewModel.isSubscribed)
     }
 }
 
@@ -329,9 +340,10 @@ extension TalkPageViewController: TalkPageReplyComposeDelegate {
 }
 
 extension TalkPageViewController {
-    enum MenuLocalizedStrings {
+    enum TalkPageLocalizedStrings {
+        static let title = WMFLocalizedString("talk-pages-view-title", value: "Talk", comment: "Title of user and article talk pages view.")
         static let openAllThreads = WMFLocalizedString("talk-page-menu-open-all", value: "Open all threads", comment: "Title for menu option open all talk page threads")
-        static let readInWeb = WMFLocalizedString("talk-page-open-in-web", value: "Read in web", comment: "Title for menu option to open a talk page in a web browser")
+        static let readInWeb = WMFLocalizedString("talk-page-read-in-web", value: "Read in web", comment: "Title for menu option to read a talk page in a web browser")
         static let archives = WMFLocalizedString("talk-page-archives", value: "Archives", comment: "Title for menu option that redirects to talk page archives")
         static let pageInfo = WMFLocalizedString("talk-page-page-info", value: "Page information", comment: "Title for menu option to go to the talk page information link")
         static let permaLink = WMFLocalizedString("talk-page-permanent-link", value: "Permanent link", comment: "Title for menu option to open the talk page's permanent link in a web browser")
@@ -342,5 +354,14 @@ extension TalkPageViewController {
         static let contributions = WMFLocalizedString("talk-page-user-contributions", value: "Contributions", comment: "Title for menu option for information on the user's contributions")
         static let userGroups = WMFLocalizedString("talk-pages-user-groups", value: "User groups", comment: "Title for menu option for information on the user's user groups")
         static let logs = WMFLocalizedString("talk-pages-user-logs", value: "Logs", comment: "Title for menu option to consult the user's public logs")
+
+        static let subscribedAlertTitle = WMFLocalizedString("talk-page-subscribed-alert-title", value: "You have subscribed!", comment: "Title for alert informing that the user subscribed to a topic")
+        static let unsubscribedAlertTitle = WMFLocalizedString("talk-page-unsubscribed-alert-title", value: "You have unsubscribed.", comment: "Title for alert informing that the user unsubscribed to a topic")
+        static let subscribedAlertSubtitle = WMFLocalizedString("talk-page-subscribed-alert-subtitle", value: "You will receive notifications about new comments in this topic.", comment: "Subtitle for alert informing that the user will receive notifications for a subscribed topic")
+        static let unsubscribedAlertSubtitle = WMFLocalizedString("talk-page-unsubscribed-alert-subtitle", value: "You will no longer receive notifications about new comments in this topic.", comment: "Subtitle for alert informing that the user will no longer receive notifications for a topic")
+
+        static let shareButtonAccesibilityLabel = WMFLocalizedString("talk-page-share-button", value: "Share talk page", comment: "Title for share talk page button")
+        static let findButtonAccesibilityLabel = WMFLocalizedString("talk-page-find-in-page-button", value: "Find in page", comment: "Title for find content in page button")
+        static let addTopicButtonAccesibilityLabel = WMFLocalizedString("talk-page-add-topic-button", value: "Add topic", comment: "Title for add topic to talk page button")
     }
 }

Wikipedia/Code/TalkPageViewModel.swift

@@ -76,6 +76,19 @@ final class TalkPageViewModel {
         }
     }
 
+    func updateSubscriptionToTopic(topic: String, shouldSubscribe: Bool, completion: @escaping (Result<Bool, Error>) -> Void) {
+        dataController.subscribeToTopic(topicName: topic, shouldSubscribe: shouldSubscribe) { [self] result in
+            switch result {
+            case let .success(result) :
+                let topicUpdated = topics.filter { $0.topicTitle == topic}
+                topicUpdated[0].isSubscribed = result
+                completion(.success(result))
+            case let .failure(error):
+                completion(.failure(error))
+            }
+        }
+    }
+
     // MARK: - Private
 
     private func populateHeaderData(articleSummary: WMFArticle?, items: [TalkPageItem]) {

Wikipedia/Code/WMFAlertManager.swift

@@ -79,6 +79,12 @@ open class WMFAlertManager: NSObject, RMessageProtocol, Themeable {
             RMessage.showNotification(in: nil, title: message, subtitle: nil, iconImage: nil, type: .error, customTypeName: nil, duration: sticky ? -1 : 2, callback: tapCallBack, buttonTitle: nil, buttonCallback: nil, at: .top, canBeDismissedByUser: true)
         })
     }
+
+    @objc func showBottomAlertWithMessage(_ message: String, subtitle: String, image: UIImage, dismissPreviousAlerts:Bool, tapCallBack: (() -> Void)? = nil) {
+        showAlert(dismissPreviousAlerts, alertBlock: { () -> Void in
+            RMessage.showNotification(withTitle: message, subtitle: subtitle, iconImage: image, type: .normal, customTypeName: nil, duration: 5, callback: tapCallBack, buttonTitle: nil, buttonCallback: nil, at: .bottom, canBeDismissedByUser: true)
+        })
+    }
 
     @objc func showAlert(_ dismissPreviousAlerts:Bool, alertBlock: @escaping () -> Void) {
         DispatchQueue.main.async {

Wikipedia/Localizations/en.lproj/Localizable.strings

@@ -998,21 +998,25 @@
 "talk-page-new-topic-body-placeholder-text" = "Compose new discussion";
 "talk-page-new-topic-success-text" = "Your discussion was successfully published";
 "talk-page-new-topic-title" = "New discussion";
-"talk-page-open-in-web" = "Read in web";
 "talk-page-page-info" = "Page information";
 "talk-page-permanent-link" = "Permanent link";
 "talk-page-publish-terms-and-licenses" = "By saving changes, you agree to the $1Terms of Use$2, and agree to release your contribution under the $3CC BY-SA 3.0$4 and the $5GFDL$6 licenses.";
+"talk-page-read-in-web" = "Read in web";
 "talk-page-related-links" = "What links here";
 "talk-page-reply-button" = "Reply";
 "talk-page-reply-terms-and-licenses" = "Note your reply will be automatically signed with your username. By saving changes, you agree to the $1Terms of Use$2, and agree to release your contribution under the $3CC BY-SA 3.0$4 and the $5GFDL$6 licenses.";
 "talk-page-reply-title" = "Reply";
 "talk-page-revision-history" = "Revision history";
 "talk-page-share-button" = "Share talk page";
 "talk-page-subscribe-to-topic" = "Subscribe";
+"talk-page-subscribed-alert-subtitle" = "You will receive notifications about new comments in this topic.";
+"talk-page-subscribed-alert-title" = "You have subscribed!";
 "talk-page-title-article-talk" = "Article Talk";
 "talk-page-title-user-talk" = "User Talk";
 "talk-page-topic-title" = "Discussion";
 "talk-page-unsubscribe-to-topic" = "Unsubscribe";
+"talk-page-unsubscribed-alert-subtitle" = "You will no longer receive notifications about new comments in this topic.";
+"talk-page-unsubscribed-alert-title" = "You have unsubscribed.";
 "talk-page-user-about" = "About user talk pages";
 "talk-page-user-contributions" = "Contributions";
 "talk-pages-coffee-roll-read-more" = "Read more";