View favorites

DB/Sources/DB/Content/TimelineRecord.swift

@@ -44,7 +44,7 @@ extension TimelineRecord {
         id = timeline.id
 
         switch timeline {
-        case .home, .local, .federated:
+        case .home, .local, .federated, .favorites:
             listId = nil
             listTitle = nil
             tag = nil

DB/Sources/DB/Entities/Timeline.swift

@@ -10,6 +10,7 @@ public enum Timeline: Hashable {
     case list(List)
     case tag(String)
     case profile(accountId: Account.Id, profileCollection: ProfileCollection)
+    case favorites
 }
 
 public extension Timeline {
@@ -18,7 +19,7 @@ public extension Timeline {
     static let unauthenticatedDefaults: [Timeline] = [.local, .federated]
     static let authenticatedDefaults: [Timeline] = [.home, .local, .federated]
 
-    var filterContext: Filter.Context {
+    var filterContext: Filter.Context? {
         switch self {
         case .home, .list:
             return .home
@@ -26,6 +27,8 @@ public extension Timeline {
             return .public
         case .profile:
             return .account
+        default:
+            return nil
         }
     }
 }
@@ -45,6 +48,8 @@ extension Timeline: Identifiable {
             return "tag-".appending(tag).lowercased()
         case let .profile(accountId, profileCollection):
             return "profile-\(accountId)-\(profileCollection)"
+        case .favorites:
+            return "favorites"
         }
     }
 }

DB/Sources/DB/Extensions/Timeline+Extensions.swift

@@ -24,6 +24,8 @@ extension Timeline {
             self = .tag(tag)
         case (_, _, _, _, .some(let accountId), .some(let profileCollection)):
             self = .profile(accountId: accountId, profileCollection: profileCollection)
+        case (Timeline.favorites.id, _, _, _, _, _):
+            self = .favorites
         default:
             return nil
         }

Localizations/Localizable.strings

@@ -25,6 +25,7 @@
 "attachment.sensitive-content" = "Sensitive content";
 "attachment.media-hidden" = "Media hidden";
 "cancel" = "Cancel";
+"favorites" = "Favorites";
 "registration.review-terms-of-use-and-privacy-policy-%@" = "Please review %@'s Terms of Use and Privacy Policy to continue";
 "registration.username" = "Username";
 "registration.email" = "Email";

Mastodon/Sources/Mastodon/Entities/Filter.swift

@@ -38,7 +38,9 @@ extension Array where Element == Filter {
     // swiftlint:disable line_length
     // Adapted from https://github.com/tootsuite/mastodon/blob/bf477cee9f31036ebf3d164ddec1cebef5375513/app/javascript/mastodon/selectors/index.js#L43
     // swiftlint:enable line_length
-    public func regularExpression(context: Filter.Context) -> String? {
+    public func regularExpression(context: Filter.Context?) -> String? {
+        guard let context = context else { return nil }
+
         let inContext = filter { $0.context.contains(context) }
 
         guard !inContext.isEmpty else { return nil }

MastodonAPI/Sources/MastodonAPI/Endpoints/StatusesEndpoint.swift

@@ -10,6 +10,7 @@ public enum StatusesEndpoint {
     case timelinesHome
     case timelinesList(id: List.Id)
     case accountsStatuses(id: Account.Id, excludeReplies: Bool, onlyMedia: Bool, pinned: Bool)
+    case favourites
 }
 
 extension StatusesEndpoint: Endpoint {
@@ -21,6 +22,8 @@ extension StatusesEndpoint: Endpoint {
             return defaultContext + ["timelines"]
         case .accountsStatuses:
             return defaultContext + ["accounts"]
+        case .favourites:
+            return defaultContext
         }
     }
 
@@ -36,6 +39,8 @@ extension StatusesEndpoint: Endpoint {
             return ["list", id]
         case let .accountsStatuses(id, _, _, _):
             return [id, "statuses"]
+        case .favourites:
+            return ["favourites"]
         }
     }
 

ServiceLayer/Sources/ServiceLayer/Entities/Timeline.swift

@@ -39,6 +39,8 @@ extension Timeline {
                 excludeReplies: excludeReplies,
                 onlyMedia: onlyMedia,
                 pinned: false)
+        case .favorites:
+            return .favourites
         }
     }
 }

ServiceLayer/Sources/ServiceLayer/Services/TimelineService.swift

@@ -15,27 +15,15 @@ public struct TimelineService {
     private let timeline: Timeline
     private let mastodonAPIClient: MastodonAPIClient
     private let contentDatabase: ContentDatabase
-    private let nextPageMaxIdSubject: CurrentValueSubject<String, Never>
+    private let nextPageMaxIdSubject = PassthroughSubject<String, Never>()
 
     init(timeline: Timeline, mastodonAPIClient: MastodonAPIClient, contentDatabase: ContentDatabase) {
         self.timeline = timeline
         self.mastodonAPIClient = mastodonAPIClient
         self.contentDatabase = contentDatabase
-
-        let nextPageMaxIdSubject = CurrentValueSubject<String, Never>(String(Int.max))
-
-        self.nextPageMaxIdSubject = nextPageMaxIdSubject
         sections = contentDatabase.timelinePublisher(timeline)
-            .handleEvents(receiveOutput: {
-                guard case let .status(status, _) = $0.last?.last,
-                      status.id < nextPageMaxIdSubject.value
-                else { return }
-
-                nextPageMaxIdSubject.send(status.id)
-            })
-            .eraseToAnyPublisher()
         navigationService = NavigationService(mastodonAPIClient: mastodonAPIClient, contentDatabase: contentDatabase)
-        nextPageMaxId = nextPageMaxIdSubject.dropFirst().eraseToAnyPublisher()
+        nextPageMaxId = nextPageMaxIdSubject.eraseToAnyPublisher()
 
         if case let .tag(tag) = timeline {
             title = Just("#".appending(tag)).eraseToAnyPublisher()
@@ -58,9 +46,9 @@ extension TimelineService: CollectionService {
     public func request(maxId: String?, minId: String?) -> AnyPublisher<Never, Error> {
         mastodonAPIClient.pagedRequest(timeline.endpoint, maxId: maxId, minId: minId)
             .handleEvents(receiveOutput: {
-                guard let maxId = $0.info.maxId, maxId < nextPageMaxIdSubject.value else { return }
+                if let maxId = $0.info.maxId {
-
                     nextPageMaxIdSubject.send(maxId)
+                }
             })
             .flatMap { contentDatabase.insert(statuses: $0.result, timeline: timeline) }
             .eraseToAnyPublisher()

ViewModels/Sources/ViewModels/CollectionItemsViewModel.swift

@@ -98,7 +98,7 @@ extension CollectionItemsViewModel: CollectionViewModel {
                 .eraseToAnyPublisher()
             self.hasRequestedUsingMarker = true
         } else {
-            publisher = collectionService.request(maxId: maxId, minId: minId)
+            publisher = collectionService.request(maxId: realMaxId(maxId: maxId), minId: minId)
         }
 
         publisher
@@ -294,6 +294,17 @@ private extension CollectionItemsViewModel {
         viewModelCache = viewModelCache.filter { itemsSet.contains($0.key) }
     }
 
+    func realMaxId(maxId: String?) -> String? {
+        guard let maxId = maxId else { return nil }
+
+        guard let markerTimeline = collectionService.markerTimeline,
+              identification.appPreferences.positionBehavior(markerTimeline: markerTimeline) == .rememberPosition,
+              let lastItemId = items.value.last?.last?.itemId
+        else { return maxId }
+
+        return min(maxId, lastItemId)
+    }
+
     func idForScrollPositionMaintenance(newItems: [[CollectionItem]]) -> CollectionItem.Id? {
         let flatItems = items.value.reduce([], +)
         let flatNewItems = newItems.reduce([], +)

ViewModels/Sources/ViewModels/NavigationViewModel.swift

@@ -95,7 +95,7 @@ public extension NavigationViewModel {
         switch timeline {
         case .home, .list:
             return identification.identity.handle
-        case .local, .federated, .tag, .profile:
+        case .local, .federated, .tag, .profile, .favorites:
             return identification.identity.instance?.uri ?? ""
         }
     }
@@ -140,6 +140,12 @@ public extension NavigationViewModel {
         case notifications
         case messages
     }
+
+    func favoritesViewModel() -> CollectionViewModel {
+        CollectionItemsViewModel(
+            collectionService: identification.service.service(timeline: .favorites),
+            identification: identification)
+    }
 }
 
 extension NavigationViewModel.Tab: Identifiable {

Views/SecondaryNavigationView.swift

@@ -56,6 +56,10 @@ struct SecondaryNavigationView: View {
                     NavigationLink(destination: ListsView(viewModel: .init(identification: viewModel.identification))) {
                         Label("secondary-navigation.lists", systemImage: "scroll")
                     }
+                    NavigationLink(destination: TableView(viewModel: viewModel.favoritesViewModel())
+                                    .navigationTitle(Text("favorites"))) {
+                        Label("favorites", systemImage: "star.fill")
+                    }
                 }
                 Section {
                     NavigationLink(

Views/TabNavigationView.swift

@@ -159,6 +159,8 @@ private extension Timeline {
             return "#" + tag
         case .profile:
             return ""
+        case .favorites:
+            return NSLocalizedString("favorites", comment: "")
         }
     }
 
@@ -170,6 +172,7 @@ private extension Timeline {
         case .list: return "scroll"
         case .tag: return "number"
         case .profile: return "person"
+        case .favorites: return "star.fill"
         }
     }
 }