Account list edits

ServiceLayer/Sources/ServiceLayer/Services/AccountListService.swift

@@ -12,7 +12,7 @@ public struct AccountListService {
     public let navigationService: NavigationService
     public let canRefresh = false
 
-    private let accountsSubject = PassthroughSubject<[Account], Error>()
+    private let accountsSubject = CurrentValueSubject<[Account], Error>([])
     private let endpoint: AccountsEndpoint
     private let mastodonAPIClient: MastodonAPIClient
     private let contentDatabase: ContentDatabase
@@ -27,23 +27,26 @@ public struct AccountListService {
         self.mastodonAPIClient = mastodonAPIClient
         self.contentDatabase = contentDatabase
         self.titleComponents = titleComponents
-        sections = accountsSubject.scan([]) {
-            let presentIds = Set($0.map(\.id))
-
-            return $0 + $1.filter { !presentIds.contains($0.id) }
-        }
-        .map { [.init(items: $0.map { CollectionItem.account($0, endpoint.configuration) })] }
-        .eraseToAnyPublisher()
+        sections = accountsSubject
+            .map { [.init(items: $0.map { CollectionItem.account($0, endpoint.configuration) })] }
+            .eraseToAnyPublisher()
         nextPageMaxId = nextPageMaxIdSubject.eraseToAnyPublisher()
         navigationService = NavigationService(mastodonAPIClient: mastodonAPIClient, contentDatabase: contentDatabase)
     }
 }
 
+public extension AccountListService {
+    func remove(id: Account.Id) {
+        accountsSubject.value.removeAll { $0.id == id }
+    }
+}
+
 extension AccountListService: CollectionService {
     public func request(maxId: String?, minId: String?, search: Search?) -> AnyPublisher<Never, Error> {
         mastodonAPIClient.pagedRequest(endpoint, maxId: maxId, minId: minId)
             .handleEvents(receiveOutput: {
-                accountsSubject.send($0.result)
+                let presentIds = Set(accountsSubject.value.map(\.id))
+                accountsSubject.value.append(contentsOf: $0.result.filter { !presentIds.contains($0.id) })
 
                 guard let maxId = $0.info.maxId else { return }
 

View Controllers/TableViewController.swift

@@ -334,6 +334,8 @@ private extension TableViewController {
             confirmDelete(statusViewModel: statusViewModel, redraft: redraft)
         case let .report(reportViewModel):
             report(reportViewModel: reportViewModel)
+        case let .accountListEdit(accountViewModel, edit):
+            accountListEdit(accountViewModel: accountViewModel, edit: edit)
         }
     }
 
@@ -454,6 +456,10 @@ private extension TableViewController {
         present(alertController, animated: true)
     }
 
+    func accountListEdit(accountViewModel: AccountViewModel, edit: CollectionItemEvent.AccountListEdit) {
+        viewModel.applyAccountListEdit(viewModel: accountViewModel, edit: edit)
+    }
+
     func set(expandAllState: ExpandAllState) {
         switch expandAllState {
         case .hidden:

ViewModels/Sources/ViewModels/Entities/CollectionItemEvent.swift

@@ -12,4 +12,12 @@ public enum CollectionItemEvent {
     case confirmDelete(StatusViewModel, redraft: Bool)
     case report(ReportViewModel)
     case share(URL)
+    case accountListEdit(AccountViewModel, AccountListEdit)
+}
+
+public extension CollectionItemEvent {
+    enum AccountListEdit {
+        case acceptFollowRequest
+        case rejectFollowRequest
+    }
 }

ViewModels/Sources/ViewModels/View Models/AccountViewModel.swift

@@ -21,6 +21,8 @@ public final class AccountViewModel: CollectionItemViewModel, ObservableObject {
 }
 
 public extension AccountViewModel {
+    var id: Account.Id { accountService.account.id }
+
     var headerURL: URL {
         if !identityContext.appPreferences.shouldReduceMotion, identityContext.appPreferences.animateHeaders {
             return accountService.account.header
@@ -140,27 +142,11 @@ public extension AccountViewModel {
     }
 
     func acceptFollowRequest() {
-        ignorableOutputEvent(
-            accountService.acceptFollowRequest()
-                .collect()
-                .flatMap { [weak self] _ -> AnyPublisher<Never, Error> in
-                    guard let self = self else { return Empty().eraseToAnyPublisher() }
-
-                    return self.identityContext.service.verifyCredentials()
-                }
-                .eraseToAnyPublisher())
+        accountListEdit(accountService.acceptFollowRequest(), event: .acceptFollowRequest)
     }
 
     func rejectFollowRequest() {
-        ignorableOutputEvent(
-            accountService.rejectFollowRequest()
-                .collect()
-                .flatMap { [weak self] _ -> AnyPublisher<Never, Error> in
-                    guard let self = self else { return Empty().eraseToAnyPublisher() }
-
-                    return self.identityContext.service.verifyCredentials()
-                }
-                .eraseToAnyPublisher())
+        accountListEdit(accountService.rejectFollowRequest(), event: .rejectFollowRequest)
     }
 
     func domainBlock() {
@@ -176,4 +162,15 @@ private extension AccountViewModel {
     func ignorableOutputEvent(_ action: AnyPublisher<Never, Error>) {
         eventsSubject.send(action.map { _ in .ignorableOutput }.eraseToAnyPublisher())
     }
+
+    func accountListEdit(_ action: AnyPublisher<Never, Error>, event: CollectionItemEvent.AccountListEdit) {
+        eventsSubject.send(
+            action.collect()
+                .map { [weak self] _ -> CollectionItemEvent in
+                    guard let self = self else { return .ignorableOutput }
+
+                    return .accountListEdit(self, .acceptFollowRequest)
+                }
+                .eraseToAnyPublisher())
+    }
 }

ViewModels/Sources/ViewModels/View Models/CollectionItemsViewModel.swift

@@ -321,6 +321,20 @@ extension CollectionItemsViewModel: CollectionViewModel {
                 .store(in: &cancellables)
         }
     }
+
+    public func applyAccountListEdit(viewModel: AccountViewModel, edit: CollectionItemEvent.AccountListEdit) {
+        (collectionService as? AccountListService)?.remove(id: viewModel.id)
+
+        switch edit {
+        case .acceptFollowRequest, .rejectFollowRequest:
+            identityContext.service.verifyCredentials()
+                .assignErrorsToAlertItem(to: \.alertItem, on: self)
+                .sink { _ in }
+                .store(in: &cancellables)
+        default:
+            break
+        }
+    }
 }
 
 private extension CollectionItemsViewModel {

ViewModels/Sources/ViewModels/View Models/CollectionViewModel.swift

@@ -21,4 +21,5 @@ public protocol CollectionViewModel {
     func canSelect(indexPath: IndexPath) -> Bool
     func viewModel(indexPath: IndexPath) -> CollectionItemViewModel
     func toggleExpandAll()
+    func applyAccountListEdit(viewModel: AccountViewModel, edit: CollectionItemEvent.AccountListEdit)
 }

ViewModels/Sources/ViewModels/View Models/ProfileViewModel.swift

@@ -139,4 +139,8 @@ extension ProfileViewModel: CollectionViewModel {
     public func toggleExpandAll() {
         collectionViewModel.value.toggleExpandAll()
     }
+
+    public func applyAccountListEdit(viewModel: AccountViewModel, edit: CollectionItemEvent.AccountListEdit) {
+        collectionViewModel.value.applyAccountListEdit(viewModel: viewModel, edit: edit)
+    }
 }

Views/AccountView.swift

@@ -80,6 +80,7 @@ extension AccountView: UITextViewDelegate {
 }
 
 private extension AccountView {
+    // swiftlint:disable:next function_body_length
     func initialSetup() {
         let stackView = UIStackView()