fix(ui): Fix SSE in chat

webui/app.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net/http"
 	"os"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -215,7 +216,7 @@ func (a *App) ImportAgent(pool *state.AgentPool) func(c *fiber.Ctx) error {
 		os.MkdirAll("./uploads", os.ModePerm)
 
 		// Safely save the file to prevent path traversal
-		destination := fmt.Sprintf("./uploads/%s", file.Filename)
+		destination := filepath.Join("./uploads", file.Filename)
 		if err := c.SaveFile(file, destination); err != nil {
 			// Handle error
 			return err
@@ -385,7 +386,7 @@ func (a *App) ChatAPI(pool *state.AgentPool) func(c *fiber.Ctx) error {
 					xlog.Error("Error marshaling error message", "error", err)
 				} else {
 					manager.Send(
-						sse.NewMessage(string(errorData)).WithEvent("error"))
+						sse.NewMessage(string(errorData)).WithEvent("json_error"))
 				}
 			} else {
 				// Send agent response

webui/react-ui/src/hooks/useChat.js

@@ -109,22 +109,22 @@ export function useChat(agentName) {
     setSending(true);
     setError(null);
     
-    // Add user message to the local state immediately for better UX
-    const messageId = `${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
-    
-    const userMessage = {
-      id: messageId,
-      sender: 'user',
-      content,
-      timestamp: new Date().toISOString(),
-    };
-    
-    setMessages(prev => [...prev, userMessage]);
-    
-    // Track this message content to avoid duplication from SSE
-    localMessageContents.current.add(content);
-    
     try {
+      // Add user message to the local state immediately for better UX
+      const messageId = `${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
+      
+      const userMessage = {
+        id: messageId,
+        sender: 'user',
+        content,
+        timestamp: new Date().toISOString(),
+      };
+      
+      setMessages(prev => [...prev, userMessage]);
+      
+      // Track this message content to avoid duplication from SSE
+      localMessageContents.current.add(content);
+      
       // Use the JSON-based API endpoint
       await chatApi.sendMessage(agentName, content);
       return true;
@@ -133,8 +133,15 @@ export function useChat(agentName) {
       console.error('Error sending message:', err);
       setSending(false);
       return false;
+    } finally {
+      // Ensure sending state is reset after a timeout in case SSE doesn't update
+      setTimeout(() => {
+        if (sending) {
+          setSending(false);
+        }
+      }, 5000); // 5 second timeout
     }
-  }, [agentName]);
+  }, [agentName, sending]);
 
   // Clear chat history
   const clearChat = useCallback(() => {

webui/react-ui/src/hooks/useSSE.js

@@ -63,8 +63,8 @@ export function useSSE(agentName) {
       }
     });
     
-    // Handle 'status' event
-    eventSource.addEventListener('status', (event) => {
+    // Handle 'json_status' event
+    eventSource.addEventListener('json_status', (event) => {
       try {
         const data = JSON.parse(event.data);
         const timestamp = data.timestamp || new Date().toISOString();
@@ -81,7 +81,7 @@ export function useSSE(agentName) {
     });
     
     // Handle 'error' event
-    eventSource.addEventListener('error', (event) => {
+    eventSource.addEventListener('json_error', (event) => {
       try {
         const data = JSON.parse(event.data);
         const timestamp = data.timestamp || new Date().toISOString();