fix invalid auth token handling with onion request

Signal/src/Loki/View Controllers/JoinPublicChatVC.swift

@@ -156,7 +156,7 @@ final class JoinPublicChatVC : BaseVC, UIPageViewControllerDataSource, UIPageVie
                 self?.dismiss(animated: true, completion: nil) // Dismiss the loader
                 var title = "Couldn't Join"
                 var message = ""
-                if case HTTP.Error.httpRequestFailed(let statusCode, _) = error, statusCode == 401 || statusCode == 403 {
+                if case OnionRequestAPI.Error.httpRequestFailedAtTargetSnode(statusCode: let statusCode, json: _) = error, statusCode == 401 || statusCode == 403 {
                     title = "Unauthorized"
                     message = "Please ask the open group operator to add you to the group."
                 }

SignalServiceKit/src/Loki/API/DotNetAPI.swift

@@ -187,17 +187,3 @@ public class DotNetAPI : NSObject {
         }
     }
 }
-
-// MARK: Error Handling
-internal extension Promise {
-
-    internal func handlingInvalidAuthTokenIfNeeded(for server: String) -> Promise<T> {
-        return recover2 { error -> Promise<T> in
-            if case HTTP.Error.httpRequestFailed(let statusCode, _) = error, statusCode == 401 || statusCode == 403 {
-                print("[Loki] Auth token for: \(server) expired; dropping it.")
-                DotNetAPI.removeAuthToken(for: server)
-            }
-            throw error
-        }
-    }
-}

SignalServiceKit/src/Loki/API/Onion Requests/OnionRequestAPI.swift

@@ -26,7 +26,7 @@ public enum OnionRequestAPI {
     }
 
     // MARK: Error
-    internal enum Error : LocalizedError {
+     public enum Error : LocalizedError {
         case httpRequestFailedAtTargetSnode(statusCode: UInt, json: JSON)
         case insufficientSnodes
         case invalidURL
@@ -35,7 +35,7 @@ public enum OnionRequestAPI {
         case snodePublicKeySetMissing
         case unsupportedSnodeVersion(String)
 
-        internal var errorDescription: String? {
+        public var errorDescription: String? {
             switch self {
             case .httpRequestFailedAtTargetSnode(let statusCode): return "HTTP request failed at target snode with status code: \(statusCode)."
             case .insufficientSnodes: return "Couldn't find enough snodes to build a path."

SignalServiceKit/src/Loki/API/Open Groups/PublicChatAPI.swift

@@ -523,3 +523,17 @@ public final class PublicChatAPI : DotNetAPI {
         return moderators[server]?[channel]?.contains(hexEncodedPublicString) ?? false
     }
 }
+
+// MARK: Error Handling
+internal extension Promise {
+
+    internal func handlingInvalidAuthTokenIfNeeded(for server: String) -> Promise<T> {
+        return recover2 { error -> Promise<T> in
+            if case OnionRequestAPI.Error.httpRequestFailedAtTargetSnode(let statusCode, _) = error, statusCode == 401 || statusCode == 403 {
+                print("[Loki] Auth token for: \(server) expired; dropping it.")
+                PublicChatAPI.removeAuthToken(for: server)
+            }
+            throw error
+        }
+    }
+}