Add Tool Calls support

(cherry picked from commit 6a42965)

Author: iroqueta

java/src/main/java/com/genexus/GXProcedure.java

@@ -4,7 +4,6 @@
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.List;
 
 import com.genexus.db.Namespace;
 import com.genexus.db.UserInformation;
@@ -263,6 +262,10 @@ protected void mockExecute() {
 		privateExecute( );
 	}
 
+	protected String callTool(String name, String arguments) throws Exception {
+		return "";
+	}
+
 	protected String callAssistant(String agent, GXProperties properties, ArrayList<OpenAIResponse.Message> messages, CallResult result) {
 		return callAgent(agent, properties, messages, result);
 	}
@@ -276,10 +279,34 @@ protected String callAgent(String agent, GXProperties properties, ArrayList<Open
 		OpenAIResponse aiResponse = SaiaService.call(aiRequest, result);
 		if (aiResponse != null) {
 			for (OpenAIResponse.Choice element : aiResponse.getChoices()) {
-				if (element.getFinishReason().equals("stop"))
+				String finishReason = element.getFinishReason();
+				if (finishReason.equals("stop"))
 					return element.getMessage().getContent();
+				if (finishReason.equals("tool_calls")) {
+					messages.add(element.getMessage());
+					for (OpenAIResponse.ToolCall tollCall :element.getMessage().getToolCalls()) {
+						processToolCall(tollCall, messages);
+					}
+					return callAgent(agent, properties, messages, result);
+				}
 			}
 		}
 		return "";
 	}
+
+	private void processToolCall(OpenAIResponse.ToolCall toolCall, ArrayList<OpenAIResponse.Message> messages) {
+		String result;
+		String functionName = toolCall.getFunction().getName();
+		try {
+			result = callTool(functionName, toolCall.getFunction().getArguments());
+		}
+		catch (Exception e) {
+			result = String.format("Error calling tool %s", functionName);
+		}
+		OpenAIResponse.Message toolCallMessage = new OpenAIResponse.Message();
+		toolCallMessage.setRole("tool");
+		toolCallMessage.setContent(result);
+		toolCallMessage.setToolCallId(toolCall.getId());
+		messages.add(toolCallMessage);
+	}
 }

java/src/test/java/com/genexus/agent/Agent.java

@@ -48,6 +48,15 @@ protected void privateExecute( )
 			message.setContent("Que me puedes contar de la ciudad que te pedi el clima previamente?");
 			messages.add(message);
 		}
+		else if (AV3Parameter1.equals("toolcall")) {
+			OpenAIResponse.Message message = new OpenAIResponse.Message();
+			message.setRole("user");
+			message.setContent("Necesito nombre y descripcion del producto 1779");
+			messages.add(message);
+			AV5OutputVariable = callAgent( "ProductInfo", Gxproperties, messages, new CallResult()) ;
+			cleanup();
+			return;
+		}
 		else {
 			Gxproperties.set("&Parameter1", AV3Parameter1);
 			Gxproperties.set("&Parameter2", AV4Parameter2);
@@ -62,6 +71,17 @@ protected void cleanup( )
 		this.aP2[0] = AV5OutputVariable;
 	}
 
+	protected String callTool(String name, String arguments) throws Exception {
+		switch (name) {
+			case "GetProductName":
+				return "Televisor Panavox 80 pulgadas";
+			case "GetProductDescription":
+				return "Flor de Televisor el Panavox de 80 pulgadas";
+			default:
+				return String.format("Unknown function %s", name);
+		}
+	}
+
 	public void initialize( )
 	{
 	}

java/src/test/java/com/genexus/agent/TestAgent.java

@@ -25,5 +25,9 @@ public void testAPICallAgent() {
 		String[] GXv_char5 = new String[1] ;
 		new Agent(-1).execute( "chat", "", GXv_char5) ;
 		System.out.println(GXv_char5[0]);
+
+		String[] GXv_char6 = new String[1] ;
+		new Agent(-1).execute( "toolcall", "", GXv_char6) ;
+		System.out.println(GXv_char6[0]);
 	}
 }