Update follow-button-state after (un)following a person

Mastodon/Scene/Share/View/Content/UserView+Configuration.swift

@@ -21,6 +21,7 @@ extension UserView {
         self.delegate = delegate
         viewModel.user = user
         viewModel.account = nil
+        viewModel.relationship = nil
 
         Publishers.CombineLatest(
             user.publisher(for: \.avatar),
@@ -67,9 +68,11 @@ extension UserView {
             .store(in: &disposeBag)
     }
 
-    func configure(with account: Mastodon.Entity.Account) {
+    func configure(with account: Mastodon.Entity.Account, relationship: Mastodon.Entity.Relationship?, delegate: UserViewDelegate?) {
         viewModel.account = account
+        viewModel.relationship = relationship
         viewModel.user = nil
+        self.delegate = delegate
 
         let authorUsername = PlaintextMetaContent(string: "@\(account.username)")
         authorUsernameLabel.configure(content: authorUsername)

Mastodon/Scene/Share/View/TableviewCell/UserTableViewCell+ViewModel.swift

@@ -38,28 +38,12 @@ extension UserTableViewCell {
         relationship: Mastodon.Entity.Relationship?,
         delegate: UserTableViewCellDelegate?
     ) {
-        userView.configure(with: account)
+        userView.configure(with: account, relationship: relationship, delegate: delegate)
 
-        let buttonState: UserView.ButtonState
-        if let relationship {
         let isMe = account.id == me.id
-            if isMe {
-                buttonState = .none
-            } else if relationship.following {
-                buttonState = .unfollow
-            } else if relationship.blocking || (relationship.domainBlocking ?? false) {
-                buttonState = .blocked
-            } else if relationship.requested ?? false {
-                buttonState = .pending
-            } else {
-                buttonState = .follow
-            }
-        } else {
-            buttonState = .none
-        }
-
-        userView.setButtonState(buttonState)
+        userView.updateButtonState(with: relationship, isMe: isMe)
 
+        self.delegate = delegate
     }
 
     func configure(
@@ -117,15 +101,30 @@ extension UserTableViewCellDelegate where Self: NeedsDependency & AuthContextPro
             )
         }
     }
-
-    func userView(_ view: UserView, didTapButtonWith state: UserView.ButtonState, for user: Mastodon.Entity.Account) {
+    func userView(_ view: UserView, didTapButtonWith state: UserView.ButtonState, for account: Mastodon.Entity.Account, me: MastodonUser?) {
         Task {
+            await MainActor.run { view.setButtonState(.loading) }
+
             try await DataSourceFacade.responseToUserViewButtonAction(
                 dependency: self,
-                user: user,
+                user: account,
                 buttonState: state
             )
-        }
+
+            let relationship = try await self.context.apiService.relationship(forAccounts: [account], authenticationBox: authContext.mastodonAuthenticationBox).value.first
+
+            let isMe: Bool
+            if let me {
+                isMe = account.id == me.id
+            } else {
+                isMe = false
             }
 
+            await MainActor.run {
+                view.viewModel.relationship = relationship
+                view.updateButtonState(with: relationship, isMe: isMe)
+            }
+
+        }
+    }
 }

MastodonSDK/Sources/MastodonUI/View/Content/UserView+ViewModel.swift

@@ -28,6 +28,7 @@ extension UserView {
         @Published public var authorVerifiedLink: String?
         @Published public var user: MastodonUser?
         @Published public var account: Mastodon.Entity.Account?
+        @Published public var relationship: Mastodon.Entity.Relationship?
     }
 }
 

MastodonSDK/Sources/MastodonUI/View/Content/UserView.swift

@@ -16,7 +16,7 @@ import MastodonSDK
 
 public protocol UserViewDelegate: AnyObject {
     func userView(_ view: UserView, didTapButtonWith state: UserView.ButtonState, for user: MastodonUser)
-    func userView(_ view: UserView, didTapButtonWith state: UserView.ButtonState, for user: Mastodon.Entity.Account)
+    func userView(_ view: UserView, didTapButtonWith state: UserView.ButtonState, for user: Mastodon.Entity.Account, me: MastodonUser?)
 }
 
 public final class UserView: UIView {
@@ -258,10 +258,33 @@ public extension UserView {
         if let user = viewModel.user {
             delegate?.userView(self, didTapButtonWith: currentButtonState, for: user)
         } else if let account = viewModel.account {
-            delegate?.userView(self, didTapButtonWith: currentButtonState, for: account)
+            delegate?.userView(self, didTapButtonWith: currentButtonState, for: account, me: nil)
         }
     }
 
+    func updateButtonState(with relationship: Mastodon.Entity.Relationship?, isMe: Bool) {
+        let buttonState: UserView.ButtonState
+        
+        if let relationship {
+            if isMe {
+                buttonState = .none
+            } else if relationship.following {
+                buttonState = .unfollow
+            } else if relationship.blocking || (relationship.domainBlocking ?? false) {
+                buttonState = .blocked
+            } else if relationship.requested ?? false {
+                buttonState = .pending
+            } else {
+                buttonState = .follow
+            }
+        } else {
+            buttonState = .none
+        }
+
+        setButtonState(buttonState)
+
+    }
+
     func setButtonState(_ state: ButtonState) {
         currentButtonState = state
         prepareButtonStateLayout(for: state)