Support clear history and multiline input in chat panel

Author: intitni

Core/Sources/OpenAIService/ChatGPTService.swift

@@ -5,8 +5,9 @@ import Logger
 public protocol ChatGPTServiceType {
     func send(content: String, summary: String?) async throws -> AsyncThrowingStream<String, Error>
     func stopReceivingMessage() async
-    func restart() async
+    func clearHistory() async
     func mutateSystemPrompt(_ newPrompt: String) async
+    func mutateHistory(_ mutate: (inout [ChatMessage]) -> Void) async
 }
 
 public enum ChatGPTServiceError: Error, LocalizedError {
@@ -160,13 +161,17 @@ public actor ChatGPTService: ChatGPTServiceType, ObservableObject {
         isReceivingMessage = false
     }
 
-    public func restart() {
+    public func clearHistory() {
         history = []
     }
 
     public func mutateSystemPrompt(_ newPrompt: String) {
         systemPrompt = newPrompt
     }
+
+    public func mutateHistory(_ mutate: (inout [ChatMessage]) -> Void) async {
+        mutate(&history)
+    }
 }
 
 extension ChatGPTService {

Core/Sources/Service/SuggestionPresenter/PresentInWindowSuggestionPresenter.swift

@@ -79,6 +79,12 @@ struct PresentInWindowSuggestionPresenter {
             }
         }
 
+        chatRoom.onClear = {
+            Task {
+                await service.clearHistory()
+            }
+        }
+        
         Task { @MainActor in
             let controller = GraphicalUserInterfaceController.shared.suggestionWidget
             controller.presentChatRoom(chatRoom, fileURL: fileURL)

Core/Sources/SuggestionWidget/ChatRoom.swift

@@ -5,24 +5,29 @@ public final class ChatRoom: ObservableObject, Equatable {
     @Published public var isReceivingMessage = false
     public var onMessageSend: (String) -> Void
     public var onStop: () -> Void
-    public func send(_ message: String) { onMessageSend(message) }
-    public func stop() { onStop() }
+    public var onClear: () -> Void
 
     public init(
         history: [ChatMessage] = [],
         isReceivingMessage: Bool = false,
         onMessageSend: @escaping (String) -> Void = { _ in },
-        onStop: @escaping () -> Void = {}
+        onStop: @escaping () -> Void = {},
+        onClear: @escaping () -> Void = {}
     ) {
         self.history = history
         self.isReceivingMessage = isReceivingMessage
         self.onMessageSend = onMessageSend
         self.onStop = onStop
+        self.onClear = onClear
     }
 
     public static func == (lhs: ChatRoom, rhs: ChatRoom) -> Bool {
         lhs.history == rhs.history && lhs.isReceivingMessage == rhs.isReceivingMessage
     }
+    
+    public func send(_ message: String) { onMessageSend(message) }
+    public func stop() { onStop() }
+    public func clear() { onClear() }
 }
 
 public struct ChatMessage: Equatable {