Add Auth.RefreshToken

Author: darrarski

Example/DropboxClientExampleApp/Dependencies.swift

@@ -51,6 +51,7 @@ extension DropboxClient.Client: DependencyKey {
         isSignedInStream: { isSignedIn.eraseToStream() },
         signIn: { await isSignedIn.setValue(true) },
         handleRedirect: { _ in false },
+        refreshToken: {},
         signOut: { await isSignedIn.setValue(false) }
       ),
       listFolder: .init { _ in

Sources/DropboxClient/Auth.swift

@@ -5,6 +5,7 @@ public struct Auth: Sendable {
   public typealias IsSignedInStream = @Sendable () -> AsyncStream<Bool>
   public typealias SignIn = @Sendable () async -> Void
   public typealias HandleRedirect = @Sendable (URL) async throws -> Bool
+  public typealias RefreshToken = @Sendable () async throws -> Void
   public typealias SignOut = @Sendable () async -> Void
 
   public enum Error: Swift.Error, Sendable, Equatable {
@@ -18,19 +19,22 @@ public struct Auth: Sendable {
     isSignedInStream: @escaping IsSignedInStream,
     signIn: @escaping SignIn,
     handleRedirect: @escaping HandleRedirect,
+    refreshToken: @escaping RefreshToken,
     signOut: @escaping SignOut
   ) {
     self.isSignedIn = isSignedIn
     self.isSignedInStream = isSignedInStream
     self.signIn = signIn
     self.handleRedirect = handleRedirect
+    self.refreshToken = refreshToken
     self.signOut = signOut
   }
 
   public var isSignedIn: IsSignedIn
   public var isSignedInStream: IsSignedInStream
   public var signIn: SignIn
   public var handleRedirect: HandleRedirect
+  public var refreshToken: RefreshToken
   public var signOut: SignOut
 }
 
@@ -180,6 +184,9 @@ extension Auth {
 
         return true
       },
+      refreshToken: {
+        fatalError("Unimplemented")
+      },
       signOut: {
         await saveCredentials(nil)
       }