finish implementing server configuration

QueueCube/Backend/Settings.swift

@@ -11,6 +11,12 @@ struct Settings
 {
     var configuredServers: [Server]
     
+    func configuredServers(_ servers: [Server]) -> Self {
+        var copy = self
+        copy.configuredServers = servers
+        return copy 
+    }
+    
     var isConfigured: Bool {
         !configuredServers.isEmpty
     }
@@ -41,12 +47,6 @@ struct Settings
     {
         case configuredServers
     }
-    
-    struct Server: Codable
-    {
-        let address: String
-        let port: UInt32
-    }
 }
 
 extension Notification.Name

QueueCube/Views/Settings View/AddServerView.swift

@@ -227,10 +227,14 @@ struct DiscoveredEndpoint: Identifiable
                     } else {
                         continuation.resume(throwing: Self.Error.endpointIncorrect)
                     }
+                    
+                    connection.cancel()
                 case .cancelled:
-                    continuation.resume(throwing: Self.Error.cancelledConnection)
+                    // expected
+                    break
                 case .failed(let error):
                     continuation.resume(throwing: error)
+                    connection.cancel()
                 default:
                     break
                 }

QueueCube/Views/Settings View/ServerListSettingsView.swift

@@ -23,8 +23,9 @@ struct ServerListSettingsView: View
                 }
             } else {
                 Form {
-                    List(model.configuredServers) { server in
-                        serverListItem(server)
+                    List($model.configuredServers, editActions: [.delete]) { server in
+                        serverListItem(server.wrappedValue)
+                            .tag(server.id)
                     }
                 }
             }
@@ -81,14 +82,39 @@ struct ServerListSettingsView: View
     {
         var configuredServers: [Server]
         var isAddServerPresented = false
+        var selectedItems: [Server.ID] = []
         
         init() {
-            self.configuredServers = []
+            self.configuredServers = Settings
+                .fromDefaults()
+                .configuredServers
+            
+            observeForChanges()
+        }
+        
+        func observeForChanges() {
+            withObservationTracking {
+                _ = configuredServers
+            } onChange: {
+                Task { @MainActor [weak self] in
+                    guard let self else { return }
+                    saveToSettings()
+                    observeForChanges()
+                }
+            }
         }
         
         func onAddServer(server: Server) {
             isAddServerPresented = false
-            configuredServers.append(server)
+            configuredServers = configuredServers + [ server ]
+            saveToSettings()
+        }
+        
+        func saveToSettings() {
+            Settings
+                .fromDefaults()
+                .configuredServers(configuredServers)
+                .save()
         }
     }
 }