Reregister client when adding push scope

Packages/UserAccounts/Sources/UserAccounts/UserAccountInfo.swift

@@ -11,8 +11,8 @@ import CryptoKit
 public struct UserAccountInfo: Equatable, Hashable, Identifiable, Sendable {
     public let id: String
     public let instanceURL: URL
-    public let clientID: String
-    public let clientSecret: String
+    public internal(set) var clientID: String
+    public internal(set) var clientSecret: String
     public let username: String!
     public internal(set) var accessToken: String
     public internal(set) var scopes: [String]?

Packages/UserAccounts/Sources/UserAccounts/UserAccountsManager.swift

@@ -148,12 +148,14 @@ public class UserAccountsManager: ObservableObject {
         accounts[index] = account
     }
     
-    public func updateAccessToken(_ account: UserAccountInfo, token: String, scopes: [String]) {
+    public func updateCredentials(_ account: UserAccountInfo, clientID: String, clientSecret: String, accessToken: String, scopes: [String]) {
         guard let index = accounts.firstIndex(where: { $0.id == account.id }) else {
             return
         }
         var account = account
-        account.accessToken = token
+        account.clientID = clientID
+        account.clientSecret = clientSecret
+        account.accessToken = accessToken
         account.scopes = scopes
         accounts[index] = account
     }

Tusker/API/MastodonController.swift

@@ -173,8 +173,9 @@ final class MastodonController: ObservableObject, Sendable {
     }
     
     /// - Returns: A tuple of client ID and client secret.
-    func registerApp() async throws -> (String, String) {
-        if let clientID = client.clientID,
+    func registerApp(reregister: Bool = false) async throws -> (String, String) {
+        if !reregister,
+           let clientID = client.clientID,
            let clientSecret = client.clientSecret {
             return (clientID, clientSecret)
         } else {

Tusker/Screens/Preferences/PreferencesNavigationController.swift

@@ -121,13 +121,54 @@ class PreferencesNavigationController: UINavigationController {
         guard let account = notification.object as? UserAccountInfo else {
             return
         }
+        
+        let dimmingView = UIView()
+        dimmingView.translatesAutoresizingMaskIntoConstraints = false
+        dimmingView.backgroundColor = .black.withAlphaComponent(0.1)
+        
+        let blur = UIBlurEffect(style: .prominent)
+        let blurView = UIVisualEffectView(effect: blur)
+        blurView.translatesAutoresizingMaskIntoConstraints = false
+        blurView.layer.cornerRadius = 15
+        blurView.layer.masksToBounds = true
+        
+        let spinner = UIActivityIndicatorView(style: .large)
+        spinner.translatesAutoresizingMaskIntoConstraints = false
+        spinner.startAnimating()
+
+        blurView.contentView.addSubview(spinner)
+        dimmingView.addSubview(blurView)
+        view.addSubview(dimmingView)
+        NSLayoutConstraint.activate([
+            dimmingView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            dimmingView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            dimmingView.topAnchor.constraint(equalTo: view.topAnchor),
+            dimmingView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+            
+            blurView.widthAnchor.constraint(equalToConstant: 100),
+            blurView.heightAnchor.constraint(equalToConstant: 100),
+            blurView.centerXAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerXAnchor),
+            blurView.centerYAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerYAnchor),
+            
+            spinner.centerXAnchor.constraint(equalTo: blurView.contentView.centerXAnchor),
+            spinner.centerYAnchor.constraint(equalTo: blurView.contentView.centerYAnchor),
+        ])
+        dimmingView.layer.opacity = 0
+        blurView.transform = CGAffineTransform(scaleX: 1.2, y: 1.2)
+        UIView.animate(withDuration: 0.2, delay: 0, options: .curveEaseInOut) {
+            dimmingView.layer.opacity = 1
+            blurView.transform = .identity
+        }
+        
         Task {
             do {
-                let service = GetAuthorizationTokenService(instanceURL: account.instanceURL, clientID: account.clientID, presentationContextProvider: self)
-                let code = try await service.run()
                 let mastodonController = MastodonController.getForAccount(account)
+                let (clientID, clientSecret) = try await mastodonController.registerApp(reregister: true)
+                
+                let service = GetAuthorizationTokenService(instanceURL: account.instanceURL, clientID: clientID, presentationContextProvider: self)
+                let code = try await service.run()
                 let token = try await mastodonController.authorize(authorizationCode: code)
-                UserAccountsManager.shared.updateAccessToken(account, token: token, scopes: MastodonController.oauthScopes.map(\.rawValue))
+                UserAccountsManager.shared.updateCredentials(account, clientID: clientID, clientSecret: clientSecret, accessToken: token, scopes: MastodonController.oauthScopes.map(\.rawValue))
                 // try to revoke the old token
                 try? await Client(baseURL: account.instanceURL, accessToken: account.accessToken, clientID: account.clientID, clientSecret: account.clientSecret).revokeAccessToken()
             } catch {
@@ -135,6 +176,8 @@ class PreferencesNavigationController: UINavigationController {
                 alert.addAction(UIAlertAction(title: "OK", style: .default))
                 self.present(alert, animated: true)
             }
+            
+            dimmingView.removeFromSuperview()
         }
     }