Add ChatGPTService

Author: intitni

Tool/Sources/ChatBasic/ChatAgent.swift

@@ -1,16 +1,21 @@
 import Foundation
 
 public enum ChatAgentResponse {
+    public enum Content {
+        case text(String)
+        case modification
+    }
+    
     /// Post the status of the current message.
     case status(String)
-    /// Send a token of the text message to the current message.
-    case contentToken(String)
+    /// Update the text message to the current message.
+    case content([Content])
     /// Update the attachments of the current message.
     case attachments([URL])
     /// Update the references of the current message.
     case references([ChatMessage.Reference])
-    /// End the message. The next contents will be sent as a new message.
-    case finishMessage
+    /// End the current message. The next contents will be sent as a new message.
+    case startNewMessage
 }
 
 public struct ChatAgentRequest {

Tool/Sources/ChatBasic/ChatGPTFunction.swift

@@ -43,14 +43,18 @@ public extension ChatGPTFunction {
         argumentsJsonString: String,
         reportProgress: @escaping ReportProgress
     ) async throws -> Result {
-        do {
-            let arguments = try JSONDecoder()
-                .decode(Arguments.self, from: argumentsJsonString.data(using: .utf8) ?? Data())
-            return try await call(arguments: arguments, reportProgress: reportProgress)
-        } catch {
-            await reportProgress("Error: Failed to decode arguments. \(error.localizedDescription)")
-            throw error
-        }
+        let arguments = try await {
+            do {
+                return try JSONDecoder()
+                    .decode(Arguments.self, from: argumentsJsonString.data(using: .utf8) ?? Data())
+            } catch {
+                await reportProgress(
+                    "Error: Failed to decode arguments. \(error.localizedDescription)"
+                )
+                throw error
+            }
+        }()
+        return try await call(arguments: arguments, reportProgress: reportProgress)
     }
 }
 
@@ -85,7 +89,7 @@ public extension ChatGPTArgumentsCollectingFunction {
         assertionFailure("This function is only used to get a structured output from the bot.")
         return ""
     }
-    
+
     @available(
         *,
         deprecated,