Merge branch 'develop' into feature/media-preview

Localization/app.json

@@ -349,7 +349,8 @@
                 "favourite": "favorited your post",
                 "reblog": "rebloged your post",
                 "poll": "Your poll has ended",
-                "mention": "mentioned you"
+                "mention": "mentioned you",
+                "follow_request": "request to follow you"
             }
         },
         "thread": {

Mastodon.xcodeproj/project.pbxproj

@@ -110,6 +110,7 @@
 		2D8434F525FF465D00EECE90 /* HomeTimelineNavigationBarTitleViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D8434F425FF465D00EECE90 /* HomeTimelineNavigationBarTitleViewModel.swift */; };
 		2D8434FB25FF46B300EECE90 /* HomeTimelineNavigationBarTitleView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D8434FA25FF46B300EECE90 /* HomeTimelineNavigationBarTitleView.swift */; };
 		2D84350525FF858100EECE90 /* UIScrollView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D84350425FF858100EECE90 /* UIScrollView.swift */; };
+		2D8FCA082637EABB00137F46 /* APIService+FollowRequest.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D8FCA072637EABB00137F46 /* APIService+FollowRequest.swift */; };
 		2D927F0225C7E4F2004F19B8 /* Mention.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D927F0125C7E4F2004F19B8 /* Mention.swift */; };
 		2D927F0825C7E9A8004F19B8 /* Tag.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D927F0725C7E9A8004F19B8 /* Tag.swift */; };
 		2D927F0E25C7E9C9004F19B8 /* History.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2D927F0D25C7E9C9004F19B8 /* History.swift */; };
@@ -663,6 +664,7 @@
 		2D8434F425FF465D00EECE90 /* HomeTimelineNavigationBarTitleViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HomeTimelineNavigationBarTitleViewModel.swift; sourceTree = "<group>"; };
 		2D8434FA25FF46B300EECE90 /* HomeTimelineNavigationBarTitleView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HomeTimelineNavigationBarTitleView.swift; sourceTree = "<group>"; };
 		2D84350425FF858100EECE90 /* UIScrollView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UIScrollView.swift; sourceTree = "<group>"; };
+		2D8FCA072637EABB00137F46 /* APIService+FollowRequest.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "APIService+FollowRequest.swift"; sourceTree = "<group>"; };
 		2D927F0125C7E4F2004F19B8 /* Mention.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Mention.swift; sourceTree = "<group>"; };
 		2D927F0725C7E9A8004F19B8 /* Tag.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tag.swift; sourceTree = "<group>"; };
 		2D927F0D25C7E9C9004F19B8 /* History.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = History.swift; sourceTree = "<group>"; };
@@ -1734,6 +1736,7 @@
 				DBCC3B9426157E6E0045B23D /* APIService+Relationship.swift */,
 				5B24BBE1262DB19100A9381B /* APIService+Report.swift */,
 				DBAE3F932616E28B004B8251 /* APIService+Follow.swift */,
+				2D8FCA072637EABB00137F46 /* APIService+FollowRequest.swift */,
 				DBAE3F8D2616E0B1004B8251 /* APIService+Block.swift */,
 				DBAE3F9D2616E308004B8251 /* APIService+Mute.swift */,
 				5B90C48426259BF10002E742 /* APIService+Subscriptions.swift */,
@@ -2902,6 +2905,7 @@
 				DBA0A10925FB3C2B0079C110 /* RoundedEdgesButton.swift in Sources */,
 				DBABE3EC25ECAC4B00879EE5 /* WelcomeIllustrationView.swift in Sources */,
 				DB71FD4625F8C6D200512AE1 /* StatusProvider+UITableViewDataSourcePrefetching.swift in Sources */,
+				2D8FCA082637EABB00137F46 /* APIService+FollowRequest.swift in Sources */,
 				2D152A8C25C295CC009AA50C /* StatusView.swift in Sources */,
 				2DE0FAC82615F5F000CDF649 /* SearchRecommendAccountsCollectionViewCell.swift in Sources */,
 				2DFAD5272616F9D300F9EE7C /* SearchViewController+Searching.swift in Sources */,

Mastodon.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -69,7 +69,7 @@
         "repositoryURL": "https://github.com/onevcat/Kingfisher.git",
         "state": {
           "branch": null,
-          "revision": "bbc4bc4def7eb05a7ba8e1219f80ee9be327334e",
+          "revision": "15d199e84677303a7004ed2c5ecaa1a90f3863f8",
           "version": "6.2.1"
         }
       },

Mastodon/Diffiable/Section/NotificationSection.swift

@@ -91,6 +91,18 @@ extension NotificationSection {
                             cell.actionLabel.text = actionText + " · " + timeText
                         }
                         .store(in: &cell.disposeBag)
+                    cell.acceptButton.publisher(for: .touchUpInside)
+                        .sink { [weak cell] _ in
+                            guard let cell = cell else { return }
+                            cell.delegate?.notificationTableViewCell(cell, notification: notification, acceptButtonDidPressed: cell.acceptButton)
+                        }
+                        .store(in: &cell.disposeBag)
+                    cell.rejectButton.publisher(for: .touchUpInside)
+                        .sink { [weak cell] _ in
+                            guard let cell = cell else { return }
+                            cell.delegate?.notificationTableViewCell(cell, notification: notification, rejectButtonDidPressed: cell.rejectButton)
+                        }
+                        .store(in: &cell.disposeBag)
                     cell.actionImageBackground.backgroundColor = color
                     cell.actionLabel.text = actionText + " · " + timeText
                     cell.nameLabel.text = notification.account.displayName.isEmpty ? notification.account.username : notification.account.displayName
@@ -108,6 +120,7 @@ extension NotificationSection {
                     if let actionImage = UIImage(systemName: actionImageName, withConfiguration: UIImage.SymbolConfiguration(pointSize: 12, weight: .semibold))?.withRenderingMode(.alwaysTemplate) {
                         cell.actionImageView.image = actionImage
                     }
+                    cell.buttonStackView.isHidden = (type != .followRequest)
                     return cell
                 }
             case .bottomLoader:

Mastodon/Extension/MastodonSDK/Mastodon+Entity+Notification+Type.swift

@@ -24,6 +24,8 @@ extension Mastodon.Entity.Notification.NotificationType {
                 color = Asset.Colors.Notification.mention.color
             case .poll:
                 color = Asset.Colors.brandBlue.color
+            case .followRequest:
+                color = Asset.Colors.brandBlue.color
             default:
                 color = .clear
             }
@@ -45,6 +47,8 @@ extension Mastodon.Entity.Notification.NotificationType {
                 actionText = L10n.Scene.Notification.Action.mention
             case .poll:
                 actionText = L10n.Scene.Notification.Action.poll
+            case .followRequest:
+                actionText = L10n.Scene.Notification.Action.followRequest
             default:
                 actionText = ""
             }
@@ -66,6 +70,8 @@ extension Mastodon.Entity.Notification.NotificationType {
                 actionImageName = "at"
             case .poll:
                 actionImageName = "list.bullet"
+            case .followRequest:
+                actionImageName = "person.crop.circle"
             default:
                 actionImageName = ""
             }

Mastodon/Generated/Strings.swift

@@ -377,6 +377,8 @@ internal enum L10n {
         internal static let favourite = L10n.tr("Localizable", "Scene.Notification.Action.Favourite")
         /// followed you
         internal static let follow = L10n.tr("Localizable", "Scene.Notification.Action.Follow")
+        /// request to follow you
+        internal static let followRequest = L10n.tr("Localizable", "Scene.Notification.Action.FollowRequest")
         /// mentioned you
         internal static let mention = L10n.tr("Localizable", "Scene.Notification.Action.Mention")
         /// Your poll has ended

Mastodon/Protocol/UserProvider/UserProviderFacade.swift

@@ -44,8 +44,7 @@ extension UserProviderFacade {
                 
                 return context.apiService.toggleFollow(
                     for: mastodonUser,
-                    activeMastodonAuthenticationBox: activeMastodonAuthenticationBox,
+                    activeMastodonAuthenticationBox: activeMastodonAuthenticationBox
-                    needFeedback: true
                 )
             }
             .switchToLatest()

Mastodon/Resources/en.lproj/Localizable.strings

@@ -127,6 +127,7 @@ tap the link to confirm your account.";
 "Scene.HomeTimeline.Title" = "Home";
 "Scene.Notification.Action.Favourite" = "favorited your post";
 "Scene.Notification.Action.Follow" = "followed you";
+"Scene.Notification.Action.FollowRequest" = "request to follow you";
 "Scene.Notification.Action.Mention" = "mentioned you";
 "Scene.Notification.Action.Poll" = "Your poll has ended";
 "Scene.Notification.Action.Reblog" = "rebloged your post";

Mastodon/Scene/Notification/NotificationViewController.swift

@@ -210,6 +210,14 @@ extension NotificationViewController: ContentOffsetAdjustableTimelineViewControl
 
 // MARK: - NotificationTableViewCellDelegate
 extension NotificationViewController: NotificationTableViewCellDelegate {
+    func notificationTableViewCell(_ cell: NotificationTableViewCell, notification: MastodonNotification, acceptButtonDidPressed button: UIButton) {
+        viewModel.acceptFollowRequest(notification: notification)
+    }
+    
+    func notificationTableViewCell(_ cell: NotificationTableViewCell, notification: MastodonNotification, rejectButtonDidPressed button: UIButton) {
+        viewModel.rejectFollowRequest(notification: notification)
+    }
+    
     func userAvatarDidPressed(notification: MastodonNotification) {
         let viewModel = ProfileViewModel(context: context, optionalMastodonUser: notification.account)
         DispatchQueue.main.async {

Mastodon/Scene/Notification/NotificationViewModel+LoadLatestState.swift

@@ -53,7 +53,7 @@ extension NotificationViewModel.LoadLatestState {
                 sinceID: nil,
                 minID: nil,
                 limit: nil,
-                excludeTypes: [.followRequest],
+                excludeTypes: [],
                 accountID: nil
             )
             viewModel.context.apiService.allNotifications(

Mastodon/Scene/Notification/NotificationViewModel.swift

@@ -12,6 +12,7 @@ import Foundation
 import GameplayKit
 import MastodonSDK
 import UIKit
+import OSLog
 
 final class NotificationViewModel: NSObject {
     var disposeBag = Set<AnyCancellable>()
@@ -120,6 +121,38 @@ final class NotificationViewModel: NSObject {
             }
             .store(in: &disposeBag)
     }
+    
+    func acceptFollowRequest(notification: MastodonNotification) {
+        guard let activeMastodonAuthenticationBox = self.activeMastodonAuthenticationBox.value else { return }
+        context.apiService.acceptFollowRequest(mastodonUserID: notification.account.id, mastodonAuthenticationBox: activeMastodonAuthenticationBox)
+            .sink { [weak self] completion in
+                switch completion {
+                case .failure(let error):
+                    os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: accept FollowRequest fail: %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription)
+                case .finished:
+                    self?.loadLatestStateMachine.enter(NotificationViewModel.LoadLatestState.Loading.self)
+                }
+            } receiveValue: { _ in
+                
+            }
+            .store(in: &disposeBag)
+    }
+    
+    func rejectFollowRequest(notification: MastodonNotification) {
+        guard let activeMastodonAuthenticationBox = self.activeMastodonAuthenticationBox.value else { return }
+        context.apiService.rejectFollowRequest(mastodonUserID: notification.account.id, mastodonAuthenticationBox: activeMastodonAuthenticationBox)
+            .sink { [weak self] completion in
+                switch completion {
+                case .failure(let error):
+                    os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: reject FollowRequest fail: %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription)
+                case .finished:
+                    self?.loadLatestStateMachine.enter(NotificationViewModel.LoadLatestState.Loading.self)
+                }
+            } receiveValue: { _ in
+                
+            }
+            .store(in: &disposeBag)
+    }
 }
 
 extension NotificationViewModel {

Mastodon/Scene/Notification/TableViewCell/NotificationTableViewCell.swift

@@ -21,6 +21,10 @@ protocol NotificationTableViewCellDelegate: AnyObject {
     func notificationStatusTableViewCell(_ cell: NotificationStatusTableViewCell, statusView: StatusView, contentWarningOverlayViewDidPressed contentWarningOverlayView: ContentWarningOverlayView)
     func notificationStatusTableViewCell(_ cell: NotificationStatusTableViewCell, statusView: StatusView, playerContainerView: PlayerContainerView, contentWarningOverlayViewDidPressed contentWarningOverlayView: ContentWarningOverlayView)
     
+    func notificationTableViewCell(_ cell: NotificationTableViewCell, notification: MastodonNotification, acceptButtonDidPressed button: UIButton)
+    
+    func notificationTableViewCell(_ cell: NotificationTableViewCell, notification: MastodonNotification, rejectButtonDidPressed button: UIButton)
+    
 }
 
 final class NotificationTableViewCell: UITableViewCell {
@@ -76,6 +80,24 @@ final class NotificationTableViewCell: UITableViewCell {
         return label
     }()
     
+    let acceptButton: UIButton = {
+        let button = UIButton(type: .custom)
+        let actionImage = UIImage(systemName: "checkmark.circle.fill", withConfiguration: UIImage.SymbolConfiguration(pointSize: 28, weight: .semibold))?.withRenderingMode(.alwaysTemplate)
+        button.setImage(actionImage, for: .normal)
+        button.tintColor = Asset.Colors.Label.secondary.color
+        return button
+    }()
+    
+    let rejectButton: UIButton = {
+        let button = UIButton(type: .custom)
+        let actionImage = UIImage(systemName: "xmark.circle.fill", withConfiguration: UIImage.SymbolConfiguration(pointSize: 28, weight: .semibold))?.withRenderingMode(.alwaysTemplate)
+        button.setImage(actionImage, for: .normal)
+        button.tintColor = Asset.Colors.Label.secondary.color
+        return button
+    }()
+    
+    let buttonStackView = UIStackView()
+    
     override func prepareForReuse() {
         super.prepareForReuse()
         avatatImageView.af.cancelImageRequest()
@@ -97,9 +119,8 @@ extension NotificationTableViewCell {
     func configure() {
         
         let containerStackView = UIStackView()
-        containerStackView.axis = .horizontal
+        containerStackView.axis = .vertical
-        containerStackView.alignment = .center
+        containerStackView.alignment = .fill
-        containerStackView.spacing = 4
         containerStackView.layoutMargins = UIEdgeInsets(top: 14, left: 0, bottom: 12, right: 0)
         containerStackView.isLayoutMarginsRelativeArrangement = true
         containerStackView.translatesAutoresizingMaskIntoConstraints = false
@@ -110,8 +131,13 @@ extension NotificationTableViewCell {
             contentView.readableContentGuide.trailingAnchor.constraint(equalTo: containerStackView.trailingAnchor),
             contentView.bottomAnchor.constraint(equalTo: containerStackView.bottomAnchor),
         ])
+        
+        let horizontalStackView = UIStackView()
+        horizontalStackView.translatesAutoresizingMaskIntoConstraints = false
+        horizontalStackView.axis = .horizontal
+        horizontalStackView.spacing = 6
 
-        containerStackView.addArrangedSubview(avatarContainer)
+        horizontalStackView.addArrangedSubview(avatarContainer)
         avatarContainer.translatesAutoresizingMaskIntoConstraints = false
         NSLayoutConstraint.activate([
             avatarContainer.heightAnchor.constraint(equalToConstant: 47).priority(.required - 1),
@@ -144,13 +170,23 @@ extension NotificationTableViewCell {
         ])
         
         nameLabel.translatesAutoresizingMaskIntoConstraints = false
-        containerStackView.addArrangedSubview(nameLabel)
+        horizontalStackView.addArrangedSubview(nameLabel)
         actionLabel.translatesAutoresizingMaskIntoConstraints = false
-        containerStackView.addArrangedSubview(actionLabel)
+        horizontalStackView.addArrangedSubview(actionLabel)
-        nameLabel.setContentCompressionResistancePriority(.required - 1, for: .vertical)
+        nameLabel.setContentCompressionResistancePriority(.required - 1, for: .horizontal)
-        nameLabel.setContentHuggingPriority(.defaultHigh, for: .horizontal)
+        nameLabel.setContentHuggingPriority(.required - 1, for: .horizontal)
         actionLabel.setContentHuggingPriority(.defaultLow, for: .horizontal)
 
+        containerStackView.addArrangedSubview(horizontalStackView)
+        
+        buttonStackView.translatesAutoresizingMaskIntoConstraints = false
+        buttonStackView.axis = .horizontal
+        buttonStackView.distribution = .fillEqually
+        acceptButton.translatesAutoresizingMaskIntoConstraints = false
+        rejectButton.translatesAutoresizingMaskIntoConstraints = false
+        buttonStackView.addArrangedSubview(acceptButton)
+        buttonStackView.addArrangedSubview(rejectButton)
+        containerStackView.addArrangedSubview(buttonStackView)
     }
     
     override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {

Mastodon/Scene/Onboarding/PickServer/MastodonPickServerViewController.swift

@@ -336,6 +336,7 @@ extension MastodonPickServerViewController {
                 } else {
                     let mastodonRegisterViewModel = MastodonRegisterViewModel(
                         domain: server.domain,
+                        context: self.context,
                         authenticateInfo: response.authenticateInfo,
                         instance: response.instance.value,
                         applicationToken: response.applicationToken.value

Mastodon/Scene/Onboarding/Register/MastodonRegisterViewModel.swift

@@ -18,6 +18,7 @@ final class MastodonRegisterViewModel {
     let authenticateInfo: AuthenticationViewModel.AuthenticateInfo
     let instance: Mastodon.Entity.Instance
     let applicationToken: Mastodon.Entity.Token
+    let context: AppContext
     
     let username = CurrentValueSubject<String, Never>("")
     let displayName = CurrentValueSubject<String, Never>("")
@@ -46,11 +47,13 @@ final class MastodonRegisterViewModel {
 
     init(
         domain: String,
+        context: AppContext,
         authenticateInfo: AuthenticationViewModel.AuthenticateInfo,
         instance: Mastodon.Entity.Instance,
         applicationToken: Mastodon.Entity.Token
     ) {
         self.domain = domain
+        self.context = context
         self.authenticateInfo = authenticateInfo
         self.instance = instance
         self.applicationToken = applicationToken
@@ -78,6 +81,45 @@ final class MastodonRegisterViewModel {
             }
             .assign(to: \.value, on: usernameValidateState)
             .store(in: &disposeBag)
+        
+        username
+            .filter { !$0.isEmpty }
+            .debounce(for: .milliseconds(300), scheduler: DispatchQueue.main)
+            .removeDuplicates()
+            .compactMap { [weak self] text -> AnyPublisher<Result<Mastodon.Response.Content<Mastodon.Entity.Account>, Error>, Never>? in
+                guard let self = self else { return nil }
+                let query = Mastodon.API.Account.AccountLookupQuery(acct: text)
+                return context.apiService.accountLookup(domain: domain, query: query, authorization: self.applicationAuthorization)
+                    .map {
+                        response -> Result<Mastodon.Response.Content<Mastodon.Entity.Account>, Error> in
+                        Result.success(response)
+                    }
+                    .catch { error in
+                        Just(Result.failure(error))
+                    }
+                    .eraseToAnyPublisher()
+            }
+            .switchToLatest()
+            .sink { [weak self] result in
+                guard let self = self else { return }
+                switch result {
+                case .success:
+                    let text = L10n.Scene.Register.Error.Reason.taken(L10n.Scene.Register.Error.Item.username)
+                    self.usernameErrorPrompt.value = MastodonRegisterViewModel.errorPromptAttributedString(for: text)
+                case .failure:
+                    break
+                }
+            }
+            .store(in: &disposeBag)
+        
+        usernameValidateState
+            .sink { [weak self] validateState in
+                if validateState == .valid {
+                    self?.usernameErrorPrompt.value = nil
+                }
+            }
+            .store(in: &disposeBag)
+
         displayName
             .map { displayname in
                 guard !displayname.isEmpty else { return .empty }
@@ -115,7 +157,8 @@ final class MastodonRegisterViewModel {
                 let error = error as? Mastodon.API.Error
                 let mastodonError = error?.mastodonError
                 if case let .generic(genericMastodonError) = mastodonError,
-                   let details = genericMastodonError.details {
+                   let details = genericMastodonError.details
+                {
                     self.usernameErrorPrompt.value = details.usernameErrorDescriptions.first.flatMap { MastodonRegisterViewModel.errorPromptAttributedString(for: $0) }
                     self.emailErrorPrompt.value = details.emailErrorDescriptions.first.flatMap { MastodonRegisterViewModel.errorPromptAttributedString(for: $0) }
                     self.passwordErrorPrompt.value = details.passwordErrorDescriptions.first.flatMap { MastodonRegisterViewModel.errorPromptAttributedString(for: $0) }
@@ -139,7 +182,7 @@ final class MastodonRegisterViewModel {
         
         Publishers.CombineLatest(
             publisherOne,
-            approvalRequired ? reasonValidateState.map {$0 == .valid}.eraseToAnyPublisher() : Just(true).eraseToAnyPublisher()
+            approvalRequired ? reasonValidateState.map { $0 == .valid }.eraseToAnyPublisher() : Just(true).eraseToAnyPublisher()
         )
         .map { $0 && $1 }
         .assign(to: \.value, on: isAllValid)
@@ -156,7 +199,6 @@ extension MastodonRegisterViewModel {
 }
 
 extension MastodonRegisterViewModel {
-    
     static func isValidEmail(_ email: String) -> Bool {
         let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
 
@@ -206,5 +248,4 @@ extension MastodonRegisterViewModel {
         
         return attributeString
     }
-    
 }

Mastodon/Scene/Onboarding/ServerRules/MastodonServerRulesViewController.swift

@@ -204,7 +204,7 @@ extension MastodonServerRulesViewController {
     @objc private func confirmButtonPressed(_ sender: UIButton) {
         os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
 
-        let viewModel = MastodonRegisterViewModel(domain: self.viewModel.domain, authenticateInfo: self.viewModel.authenticateInfo, instance: self.viewModel.instance, applicationToken: self.viewModel.applicationToken)
+        let viewModel = MastodonRegisterViewModel(domain: self.viewModel.domain, context: self.context, authenticateInfo: self.viewModel.authenticateInfo, instance: self.viewModel.instance, applicationToken: self.viewModel.applicationToken)
         self.coordinator.present(scene: .mastodonRegister(viewModel: viewModel), from: self, transition: .show)
     }
 }

Mastodon/Scene/SuggestionAccount/SuggestionAccountViewModel.swift

@@ -188,8 +188,7 @@ final class SuggestionAccountViewModel: NSObject {
         let mastodonUser = context.managedObjectContext.object(with: objectID) as! MastodonUser
         return context.apiService.toggleFollow(
             for: mastodonUser,
-            activeMastodonAuthenticationBox: activeMastodonAuthenticationBox,
+            activeMastodonAuthenticationBox: activeMastodonAuthenticationBox
-            needFeedback: false
         )
     }
     

Mastodon/Service/APIService/APIService+Account.swift

@@ -152,4 +152,17 @@ extension APIService {
         )
     }
     
+    func accountLookup(
+        domain: String,
+        query: Mastodon.API.Account.AccountLookupQuery,
+        authorization: Mastodon.API.OAuth.Authorization
+    ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Account>, Error> {
+        return Mastodon.API.Account.lookupAccount(
+            session: session,
+            domain: domain,
+            query: query,
+            authorization: authorization
+        )
+    }
+    
 }

Mastodon/Service/APIService/APIService+Follow.swift

@@ -24,15 +24,12 @@ extension APIService {
     /// - Returns: publisher for `Relationship`
     func toggleFollow(
         for mastodonUser: MastodonUser,
-        activeMastodonAuthenticationBox: AuthenticationService.MastodonAuthenticationBox,
+        activeMastodonAuthenticationBox: AuthenticationService.MastodonAuthenticationBox
-        needFeedback: Bool
     ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> {
-        var impactFeedbackGenerator: UIImpactFeedbackGenerator?
+        
-        var notificationFeedbackGenerator: UINotificationFeedbackGenerator?
+        let impactFeedbackGenerator = UIImpactFeedbackGenerator(style: .light)
-        if needFeedback {
+        let notificationFeedbackGenerator = UINotificationFeedbackGenerator()
-            impactFeedbackGenerator = UIImpactFeedbackGenerator(style: .light)
+        
-            notificationFeedbackGenerator = UINotificationFeedbackGenerator()
-        }
         
         return followUpdateLocal(
             mastodonUserObjectID: mastodonUser.objectID,
@@ -40,9 +37,9 @@ extension APIService {
         )
         .receive(on: DispatchQueue.main)
         .handleEvents { _ in
-            impactFeedbackGenerator?.prepare()
+            impactFeedbackGenerator.prepare()
         } receiveOutput: { _ in
-            impactFeedbackGenerator?.impactOccurred()
+            impactFeedbackGenerator.impactOccurred()
         } receiveCompletion: { completion in
             switch completion {
             case .failure(let error):
@@ -79,13 +76,13 @@ extension APIService {
                     os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: [Friendship] rollback finish", ((#file as NSString).lastPathComponent), #line, #function)
                 } receiveValue: { _ in
                     // do nothing
-                    notificationFeedbackGenerator?.prepare()
+                    notificationFeedbackGenerator.prepare()
-                    notificationFeedbackGenerator?.notificationOccurred(.error)
+                    notificationFeedbackGenerator.notificationOccurred(.error)
                 }
                 .store(in: &self.disposeBag)
 
             case .finished:
-                notificationFeedbackGenerator?.notificationOccurred(.success)
+                notificationFeedbackGenerator.notificationOccurred(.success)
                 os_log("%{public}s[%{public}ld], %{public}s: [Friendship] remote friendship update success", ((#file as NSString).lastPathComponent), #line, #function)
             }
         })

Mastodon/Service/APIService/APIService+FollowRequest.swift

@@ -0,0 +1,105 @@
+//
+//  APIService+FollowRequest.swift
+//  Mastodon
+//
+//  Created by sxiaojian on 2021/4/27.
+//
+
+import Foundation
+
+import UIKit
+import Combine
+import CoreData
+import CoreDataStack
+import CommonOSLog
+import MastodonSDK
+
+extension APIService {
+    func acceptFollowRequest(
+            mastodonUserID: MastodonUser.ID,
+            mastodonAuthenticationBox: AuthenticationService.MastodonAuthenticationBox
+        ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> {
+            let domain = mastodonAuthenticationBox.domain
+            let authorization = mastodonAuthenticationBox.userAuthorization
+            let requestMastodonUserID = mastodonAuthenticationBox.userID
+            
+            return Mastodon.API.Account.acceptFollowRequest(
+                session: session,
+                domain: domain,
+                userID: mastodonUserID,
+                authorization: authorization)
+            .flatMap { response -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> in
+                let managedObjectContext = self.backgroundManagedObjectContext
+                return managedObjectContext.performChanges {
+                    let requestMastodonUserRequest = MastodonUser.sortedFetchRequest
+                    requestMastodonUserRequest.predicate = MastodonUser.predicate(domain: domain, id: requestMastodonUserID)
+                    requestMastodonUserRequest.fetchLimit = 1
+                    guard let requestMastodonUser = managedObjectContext.safeFetch(requestMastodonUserRequest).first else { return }
+
+                    let lookUpMastodonUserRequest = MastodonUser.sortedFetchRequest
+                    lookUpMastodonUserRequest.predicate = MastodonUser.predicate(domain: domain, id: mastodonUserID)
+                    lookUpMastodonUserRequest.fetchLimit = 1
+                    let lookUpMastodonuser = managedObjectContext.safeFetch(lookUpMastodonUserRequest).first
+                    
+                    if let lookUpMastodonuser = lookUpMastodonuser {
+                        let entity = response.value
+                        APIService.CoreData.update(user: lookUpMastodonuser, entity: entity, requestMastodonUser: requestMastodonUser, domain: domain, networkDate: response.networkDate)
+                    }
+                }
+                .tryMap { result -> Mastodon.Response.Content<Mastodon.Entity.Relationship> in
+                    switch result {
+                    case .success:
+                        return response
+                    case .failure(let error):
+                        throw error
+                    }
+                }
+                .eraseToAnyPublisher()
+            }
+            .eraseToAnyPublisher()
+        }
+    
+    func rejectFollowRequest(
+            mastodonUserID: MastodonUser.ID,
+            mastodonAuthenticationBox: AuthenticationService.MastodonAuthenticationBox
+        ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> {
+            let domain = mastodonAuthenticationBox.domain
+            let authorization = mastodonAuthenticationBox.userAuthorization
+            let requestMastodonUserID = mastodonAuthenticationBox.userID
+            
+            return Mastodon.API.Account.rejectFollowRequest(
+                session: session,
+                domain: domain,
+                userID: mastodonUserID,
+                authorization: authorization)
+            .flatMap { response -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> in
+                let managedObjectContext = self.backgroundManagedObjectContext
+                return managedObjectContext.performChanges {
+                    let requestMastodonUserRequest = MastodonUser.sortedFetchRequest
+                    requestMastodonUserRequest.predicate = MastodonUser.predicate(domain: domain, id: requestMastodonUserID)
+                    requestMastodonUserRequest.fetchLimit = 1
+                    guard let requestMastodonUser = managedObjectContext.safeFetch(requestMastodonUserRequest).first else { return }
+
+                    let lookUpMastodonUserRequest = MastodonUser.sortedFetchRequest
+                    lookUpMastodonUserRequest.predicate = MastodonUser.predicate(domain: domain, id: mastodonUserID)
+                    lookUpMastodonUserRequest.fetchLimit = 1
+                    let lookUpMastodonuser = managedObjectContext.safeFetch(lookUpMastodonUserRequest).first
+                    
+                    if let lookUpMastodonuser = lookUpMastodonuser {
+                        let entity = response.value
+                        APIService.CoreData.update(user: lookUpMastodonuser, entity: entity, requestMastodonUser: requestMastodonUser, domain: domain, networkDate: response.networkDate)
+                    }
+                }
+                .tryMap { result -> Mastodon.Response.Content<Mastodon.Entity.Relationship> in
+                    switch result {
+                    case .success:
+                        return response
+                    case .failure(let error):
+                        throw error
+                    }
+                }
+                .eraseToAnyPublisher()
+            }
+            .eraseToAnyPublisher()
+        }
+}

Mastodon/Service/APIService/APIService+Notification.swift

@@ -29,6 +29,14 @@ extension APIService {
         .flatMap { response -> AnyPublisher<Mastodon.Response.Content<[Mastodon.Entity.Notification]>, Error> in
             let log = OSLog.api
             return self.backgroundManagedObjectContext.performChanges {
+                if query.maxID == nil {
+                    let requestMastodonNotificationRequest = MastodonNotification.sortedFetchRequest
+                    requestMastodonNotificationRequest.predicate = MastodonNotification.predicate(domain: domain, userID: userID)
+                    let oldNotifications = self.backgroundManagedObjectContext.safeFetch(requestMastodonNotificationRequest)
+                    oldNotifications.forEach { notification in
+                        self.backgroundManagedObjectContext.delete(notification)
+                    }
+                }
                 response.value.forEach { notification in
                     let (mastodonUser, _) = APIService.CoreData.createOrMergeMastodonUser(into: self.backgroundManagedObjectContext, for: nil, in: domain, entity: notification.account, userCache: nil, networkDate: Date(), log: log)
                     var status: Status?

MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Account+FollowRequest.swift

@@ -0,0 +1,89 @@
+//
+//  Mastodon+API+Account+FollowRequest.swift
+//  
+//
+//  Created by sxiaojian on 2021/4/27.
+//
+
+import Foundation
+import Combine
+
+// MARK: - Account credentials
+extension Mastodon.API.Account {
+    
+    static func acceptFollowRequestEndpointURL(domain: String, userID: Mastodon.Entity.Account.ID) -> URL {
+        return Mastodon.API.endpointURL(domain: domain).appendingPathComponent("follow_requests")
+            .appendingPathComponent(userID)
+            .appendingPathComponent("authorize")
+    }
+    
+    static func rejectFollowRequestEndpointURL(domain: String, userID: Mastodon.Entity.Account.ID) -> URL {
+        return Mastodon.API.endpointURL(domain: domain).appendingPathComponent("follow_requests")
+            .appendingPathComponent(userID)
+            .appendingPathComponent("reject")
+    }
+
+    /// Accept Follow
+    ///
+    ///
+    /// - Since: 0.0.0
+    /// - Version: 3.3.0
+    /// # Reference
+    ///   [Document](https://docs.joinmastodon.org/methods/accounts/follow_requests/)
+    /// - Parameters:
+    ///   - session: `URLSession`
+    ///   - domain: Mastodon instance domain. e.g. "example.com"
+    ///   - userID: ID of the account in the database
+    ///   - authorization: User token
+    /// - Returns: `AnyPublisher` contains `Relationship` nested in the response
+    public static func acceptFollowRequest(
+        session: URLSession,
+        domain: String,
+        userID: Mastodon.Entity.Account.ID,
+        authorization: Mastodon.API.OAuth.Authorization
+    ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> {
+        let request = Mastodon.API.post(
+            url: acceptFollowRequestEndpointURL(domain: domain, userID: userID),
+            query: nil,
+            authorization: authorization
+        )
+        return session.dataTaskPublisher(for: request)
+            .tryMap { data, response in
+                let value = try Mastodon.API.decode(type: Mastodon.Entity.Relationship.self, from: data, response: response)
+                return Mastodon.Response.Content(value: value, response: response)
+            }
+            .eraseToAnyPublisher()
+    }
+    
+    /// Reject Follow
+    ///
+    ///
+    /// - Since: 0.0.0
+    /// - Version: 3.3.0
+    /// # Reference
+    ///   [Document](https://docs.joinmastodon.org/methods/accounts/follow_requests/)
+    /// - Parameters:
+    ///   - session: `URLSession`
+    ///   - domain: Mastodon instance domain. e.g. "example.com"
+    ///   - userID: ID of the account in the database
+    ///   - authorization: User token
+    /// - Returns: `AnyPublisher` contains `Relationship` nested in the response
+    public static func rejectFollowRequest(
+        session: URLSession,
+        domain: String,
+        userID: Mastodon.Entity.Account.ID,
+        authorization: Mastodon.API.OAuth.Authorization
+    ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Relationship>, Error> {
+        let request = Mastodon.API.post(
+            url: rejectFollowRequestEndpointURL(domain: domain, userID: userID),
+            query: nil,
+            authorization: authorization
+        )
+        return session.dataTaskPublisher(for: request)
+            .tryMap { data, response in
+                let value = try Mastodon.API.decode(type: Mastodon.Entity.Relationship.self, from: data, response: response)
+                return Mastodon.Response.Content(value: value, response: response)
+            }
+            .eraseToAnyPublisher()
+    }
+}

MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Account.swift

@@ -132,3 +132,54 @@ extension Mastodon.API.Account {
     }
     
 }
+
+extension Mastodon.API.Account {
+    static func accountsLookupEndpointURL(domain: String) -> URL {
+        return Mastodon.API.endpointURL(domain: domain).appendingPathComponent("accounts/lookup")
+    }
+
+    public struct AccountLookupQuery: GetQuery {
+
+        public var acct: String
+        
+        public init(acct: String) {
+            self.acct = acct
+        }
+        
+        var queryItems: [URLQueryItem]? {
+            var items: [URLQueryItem] = []
+            items.append(URLQueryItem(name: "acct", value: acct))
+            return items
+        }
+    }
+    
+    /// lookup account by acct.
+    ///
+    /// - Version: 3.3.1
+
+    /// - Parameters:
+    ///   - session: `URLSession`
+    ///   - domain: Mastodon instance domain. e.g. "example.com"
+    ///   - query: `AccountInfoQuery` with account query information,
+    ///   - authorization: app token
+    /// - Returns: `AnyPublisher` contains `Account` nested in the response
+    public static func lookupAccount(
+        session: URLSession,
+        domain: String,
+        query: AccountLookupQuery,
+        authorization: Mastodon.API.OAuth.Authorization?
+    ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Account>, Error> {
+        let request = Mastodon.API.get(
+            url: accountsLookupEndpointURL(domain: domain),
+            query: query,
+            authorization: authorization
+        )
+        return session.dataTaskPublisher(for: request)
+            .tryMap { data, response in
+                let value = try Mastodon.API.decode(type: Mastodon.Entity.Account.self, from: data, response: response)
+                return Mastodon.Response.Content(value: value, response: response)
+            }
+            .eraseToAnyPublisher()
+    }
+    
+}