Fix selecting follow request push notification

Closes #474

Tusker.xcodeproj/project.pbxproj

@@ -36,6 +36,7 @@
 		D60E2F2E244248BF005F8713 /* MastodonCachePersistentStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = D60E2F2D244248BF005F8713 /* MastodonCachePersistentStore.swift */; };
 		D6114E0D27F7FEB30080E273 /* TrendingStatusesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6114E0C27F7FEB30080E273 /* TrendingStatusesViewController.swift */; };
 		D6114E1127F899B30080E273 /* TrendingLinksViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6114E1027F899B30080E273 /* TrendingLinksViewController.swift */; };
+		D6187BED2BFA840B00B3A281 /* FollowRequestNotificationViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6187BEC2BFA840B00B3A281 /* FollowRequestNotificationViewController.swift */; };
 		D61A45E628DC0F2F002BE511 /* ConfirmLoadMoreCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D61A45E528DC0F2F002BE511 /* ConfirmLoadMoreCollectionViewCell.swift */; };
 		D61A45E828DF477D002BE511 /* LoadingCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D61A45E728DF477D002BE511 /* LoadingCollectionViewCell.swift */; };
 		D61A45EA28DF51EE002BE511 /* TimelineLikeCollectionViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D61A45E928DF51EE002BE511 /* TimelineLikeCollectionViewController.swift */; };
@@ -467,6 +468,7 @@
 		D60E2F2D244248BF005F8713 /* MastodonCachePersistentStore.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MastodonCachePersistentStore.swift; sourceTree = "<group>"; };
 		D6114E0C27F7FEB30080E273 /* TrendingStatusesViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrendingStatusesViewController.swift; sourceTree = "<group>"; };
 		D6114E1027F899B30080E273 /* TrendingLinksViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrendingLinksViewController.swift; sourceTree = "<group>"; };
+		D6187BEC2BFA840B00B3A281 /* FollowRequestNotificationViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FollowRequestNotificationViewController.swift; sourceTree = "<group>"; };
 		D61A45E528DC0F2F002BE511 /* ConfirmLoadMoreCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConfirmLoadMoreCollectionViewCell.swift; sourceTree = "<group>"; };
 		D61A45E728DF477D002BE511 /* LoadingCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoadingCollectionViewCell.swift; sourceTree = "<group>"; };
 		D61A45E928DF51EE002BE511 /* TimelineLikeCollectionViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineLikeCollectionViewController.swift; sourceTree = "<group>"; };
@@ -1164,6 +1166,7 @@
 				D646DCD92A081A2C0059ECEB /* PollFinishedNotificationCollectionViewCell.swift */,
 				D646DCDB2A081CF10059ECEB /* StatusUpdatedNotificationCollectionViewCell.swift */,
 				D68245112BCA1F4000AFB38B /* NotificationLoadingViewController.swift */,
+				D6187BEC2BFA840B00B3A281 /* FollowRequestNotificationViewController.swift */,
 			);
 			path = Notifications;
 			sourceTree = "<group>";
@@ -2234,6 +2237,7 @@
 				D65A261D2BC39399005EB5D8 /* PushInstanceSettingsView.swift in Sources */,
 				D65C6BF525478A9C00A6E89C /* BackgroundableViewController.swift in Sources */,
 				D61DC84D28F500D200B82C6E /* ProfileViewController.swift in Sources */,
+				D6187BED2BFA840B00B3A281 /* FollowRequestNotificationViewController.swift in Sources */,
 				D600891F29848DE2005B4D00 /* AddInstancePinnedTimelineView.swift in Sources */,
 				D693A72F25CF91C6003A14E2 /* FeaturedProfileCollectionViewCell.swift in Sources */,
 				D627943223A5466600D38C68 /* SelectableTableViewCell.swift in Sources */,

Tusker/Screens/Notifications/FollowRequestNotificationViewController.swift

@@ -0,0 +1,144 @@
+//
+//  FollowRequestNotificationViewController.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 5/19/24.
+//  Copyright © 2024 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import Pachyderm
+
+class FollowRequestNotificationViewController: UIViewController, CollectionViewController {
+    
+    private let mastodonController: MastodonController
+    private let notification: Pachyderm.Notification
+    
+    var collectionView: UICollectionView! {
+        view as? UICollectionView
+    }
+    private var dataSource: UICollectionViewDiffableDataSource<Section, Item>!
+    
+    init(notification: Pachyderm.Notification, mastodonController: MastodonController) {
+        precondition(notification.kind == .followRequest)
+        self.mastodonController = mastodonController
+        self.notification = notification
+        
+        super.init(nibName: nil, bundle: nil)
+        
+        title = "Follow Request"
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func loadView() {
+        let layout = UICollectionViewCompositionalLayout { sectionIndex, environment in
+            var config = UICollectionLayoutListConfiguration(appearance: .grouped)
+            config.backgroundColor = .appGroupedBackground
+            let section = NSCollectionLayoutSection.list(using: config, layoutEnvironment: environment)
+            section.readableContentInset(in: environment)
+            return section
+        }
+        view = UICollectionView(frame: .zero, collectionViewLayout: layout)
+        collectionView.delegate = self
+        collectionView.dragDelegate = self
+        collectionView.allowsFocus = true
+        dataSource = createDataSource()
+    }
+    
+    private func createDataSource() -> UICollectionViewDiffableDataSource<Section, Item> {
+        let followRequestCell = UICollectionView.CellRegistration<FollowRequestNotificationCollectionViewCell, Void> { [unowned self] cell, indexPath, itemIdentifier in
+            cell.delegate = self
+            cell.updateUI(notification: self.notification)
+        }
+        return UICollectionViewDiffableDataSource(collectionView: collectionView) { collectionView, indexPath, itemIdentifier in
+            return collectionView.dequeueConfiguredReusableCell(using: followRequestCell, for: indexPath, item: ())
+        }
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
+        snapshot.appendSections([.notifications])
+        snapshot.appendItems([.notification])
+        dataSource.apply(snapshot, animatingDifferences: false)
+    }
+    
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        clearSelectionOnAppear(animated: animated)
+    }
+}
+
+extension FollowRequestNotificationViewController {
+    enum Section {
+        case notifications
+    }
+    enum Item {
+        case notification
+    }
+}
+
+extension FollowRequestNotificationViewController: UICollectionViewDelegate {
+    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
+        selected(account: notification.account.id)
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, contextMenuConfigurationForItemAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
+        guard let cell = collectionView.cellForItem(at: indexPath) else {
+            return nil
+        }
+        let accountID = notification.account.id
+        return UIContextMenuConfiguration {
+            ProfileViewController(accountID: accountID, mastodonController: self.mastodonController)
+        } actionProvider: { _ in
+            let cell = cell as! FollowRequestNotificationCollectionViewCell
+            let acceptRejectChildren = [
+                UIAction(title: "Accept", image: UIImage(systemName: "checkmark.circle"), handler: { _ in cell.acceptButtonPressed() }),
+                UIAction(title: "Reject", image: UIImage(systemName: "xmark.circle"), handler: { _ in cell.rejectButtonPressed() }),
+            ]
+            let acceptRejectMenu: UIMenu
+            if #available(iOS 16.0, *) {
+                acceptRejectMenu = UIMenu(options: .displayInline, preferredElementSize: .medium, children: acceptRejectChildren)
+            } else {
+                acceptRejectMenu = UIMenu(options: .displayInline, children: acceptRejectChildren)
+            }
+            return UIMenu(children: [
+                acceptRejectMenu,
+                UIMenu(options: .displayInline, children: self.actionsForProfile(accountID: accountID, source: .view(cell))),
+            ])
+        }
+    }
+    
+    func collectionView(_ collectionView: UICollectionView, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: any UIContextMenuInteractionCommitAnimating) {
+        MenuPreviewHelper.willPerformPreviewAction(animator: animator, presenter: self)
+    }
+}
+
+extension FollowRequestNotificationViewController: UICollectionViewDragDelegate {
+    func collectionView(_ collectionView: UICollectionView, itemsForBeginning session: any UIDragSession, at indexPath: IndexPath) -> [UIDragItem] {
+        let provider = NSItemProvider(object: notification.account.url as NSURL)
+        let activity = UserActivityManager.showProfileActivity(id: notification.account.id, accountID: mastodonController.accountInfo!.id)
+        activity.displaysAuxiliaryScene = true
+        provider.registerObject(activity, visibility: .all)
+        return [UIDragItem(itemProvider: provider)]
+    }
+}
+
+extension FollowRequestNotificationViewController: TuskerNavigationDelegate {
+    var apiController: MastodonController! { mastodonController }
+}
+
+extension FollowRequestNotificationViewController: MenuActionProvider {
+}
+
+extension FollowRequestNotificationViewController: StatusBarTappableViewController {
+    func handleStatusBarTapped(xPosition: CGFloat) -> StatusBarTapActionResult {
+        collectionView.scrollToTop()
+        return .stop
+    }
+}

Tusker/Screens/Notifications/NotificationLoadingViewController.swift

@@ -89,8 +89,7 @@ class NotificationLoadingViewController: UIViewController {
         case .follow:
             vc = ProfileViewController(accountID: notification.account.id, mastodonController: mastodonController)
         case .followRequest:
-            // todo
+            vc = FollowRequestNotificationViewController(notification: notification, mastodonController: mastodonController)
-            return
         case .unknown:
             showLoadingError(Error.unknownType)
             return