🐛 The conversation will be stopped and the reason will be prompted when uploaded too large files #1246 #1247

frontend/app/[locale]/chat/internal/chatInterface.tsx

@@ -250,6 +250,9 @@ export function ChatInterface() {
   const handleSend = async () => {
     if (!input.trim() && attachments.length === 0) return; // Allow sending attachments only, without text content
 
+    // Flag to track if we should reset button states in finally block
+    let shouldResetButtonStates = true;
+
     // If in new conversation state, switch to conversation state after sending message
     if (isNewConversation) {
       setIsNewConversation(false);
@@ -373,6 +376,10 @@ export function ChatInterface() {
             t("chatInterface.createDialogFailedButContinue"),
             error
           );
+          // Reset button states when conversation creation fails
+          setIsLoading(false);
+          setIsStreaming(false);
+          return;
         }
       }
 
@@ -594,20 +601,47 @@ export function ChatInterface() {
 
         // Handle preprocessing result
         if (!result.success) {
+          // Reset button states immediately when preprocessing fails
+          setIsLoading(false);
+          setIsStreaming(false);
+
+          // Remove from streaming conversations (both new and existing conversations)
+          if (currentConversationId) {
+            setStreamingConversations((prev) => {
+              const newSet = new Set(prev);
+              newSet.delete(currentConversationId);
+              return newSet;
+            });
+          }
+
           setSessionMessages((prev) => {
             const newMessages = { ...prev };
             const lastMsg =
               newMessages[currentConversationId]?.[
                 newMessages[currentConversationId].length - 1
               ];
+
             if (lastMsg && lastMsg.role === ROLE_ASSISTANT) {
-              lastMsg.error = t("chatInterface.fileProcessingFailed", {
-                error: result.error,
-              });
+              // Handle error codes with internationalization
+              let errorMessage;
+              if (result.error === 'REQUEST_ENTITY_TOO_LARGE') {
+                errorMessage = t("chatInterface.fileSizeExceeded");
+              } else if (result.error === 'FILE_PARSING_FAILED') {
+                errorMessage = t("chatInterface.fileParsingFailed");
+              } else {
+                // For any other error, show a generic message without exposing technical details
+                errorMessage = t("chatInterface.fileProcessingFailed", {
+                  error: "Unknown error"
+                });
+              }
+
+              lastMsg.content = errorMessage;
               lastMsg.isComplete = true;
             }
+
             return newMessages;
           });
+          shouldResetButtonStates = false; // Don't reset again in finally block
           return;
         }
 
@@ -810,10 +844,8 @@ export function ChatInterface() {
         });
       } else {
         log.error(t("chatInterface.errorLabel"), error);
-        const errorMessage =
-          error instanceof Error
-            ? error.message
-            : t("chatInterface.errorProcessingRequest");
+        // Show user-friendly error message instead of technical error details
+        const errorMessage = t("chatInterface.errorProcessingRequest");
         setSessionMessages((prev) => {
           const newMessages = { ...prev };
           const lastMsg =
@@ -862,6 +894,12 @@ export function ChatInterface() {
           });
         }
       }
+    } finally {
+      // Only reset button states if we should (not when preprocessing fails)
+      if (shouldResetButtonStates) {
+        setIsLoading(false);
+        setIsStreaming(false);
+      }
     }
   };
 
@@ -1085,10 +1123,7 @@ export function ChatInterface() {
 
           setConversationLoadError((prev) => ({
             ...prev,
-            [dialog.conversation_id]:
-              error instanceof Error
-                ? error.message
-                : "Failed to load conversation",
+            [dialog.conversation_id]: "Failed to load conversation",
           }));
         } finally {
           // ensure loading state is cleared
@@ -1228,10 +1263,7 @@ export function ChatInterface() {
 
         setConversationLoadError((prev) => ({
           ...prev,
-          [dialog.conversation_id]:
-            error instanceof Error
-              ? error.message
-              : "Failed to load conversation",
+          [dialog.conversation_id]: "Failed to load conversation",
         }));
       } finally {
         // ensure loading state is cleared

frontend/const/auth.ts

@@ -3,6 +3,7 @@ export const STATUS_CODES = {
   SUCCESS: 200,
 
   UNAUTHORIZED_HTTP: 401,
+  REQUEST_ENTITY_TOO_LARGE: 413,
 
   INVALID_CREDENTIALS: 1002,
   TOKEN_EXPIRED: 1003,

frontend/public/locales/en/common.json

@@ -29,6 +29,8 @@
   "chatInterface.fileParsingCompleteWithTruncation": "File parsing complete: {{truncationInfo}}",
   "chatInterface.truncationSeparator": "; ",
   "chatInterface.fileProcessingFailed": "File processing failed: {{error}}",
+  "chatInterface.fileParsingFailed": "File parsing failed",
+  "chatInterface.fileSizeExceeded": "File size exceeds the limit, please upload smaller files",
   "chatInterface.filePreprocessingStopped": "File parsing stopped",
   "chatInterface.userCancelledRequest": "User canceled the request",
   "chatInterface.conversationStopped": "Conversation stopped",

frontend/public/locales/zh/common.json

@@ -29,6 +29,8 @@
   "chatInterface.fileParsingCompleteWithTruncation": "文件解析完成：{{truncationInfo}}",
   "chatInterface.truncationSeparator": "；",
   "chatInterface.fileProcessingFailed": "文件处理失败: {{error}}",
+  "chatInterface.fileParsingFailed": "文件解析失败",
+  "chatInterface.fileSizeExceeded": "文件大小超出限制，请上传更小的文件",
   "chatInterface.filePreprocessingStopped": "文件解析已停止",
   "chatInterface.userCancelledRequest": "用户取消了请求",
   "chatInterface.conversationStopped": "对话已停止",

frontend/services/api.ts

@@ -180,6 +180,11 @@ export const fetchWithErrorHandling = async (url: string, options: RequestInit =
         throw new ApiError(STATUS_CODES.TOKEN_EXPIRED, "Connection disconnected, session may have expired");
       }
 
+      // Handle request entity too large error (413)
+      if (response.status === 413) {
+        throw new ApiError(STATUS_CODES.REQUEST_ENTITY_TOO_LARGE, "REQUEST_ENTITY_TOO_LARGE");
+      }
+
       // Other HTTP errors
       const errorText = await response.text();
       throw new ApiError(response.status, errorText || `Request failed: ${response.status}`);

frontend/services/conversationService.ts

@@ -705,6 +705,17 @@ export const conversationService = {
         signal,
       });
 
+      // Check if the response is successful
+      if (!response.ok) {
+        // Handle specific HTTP status codes with error codes for internationalization
+        if (response.status === 413) {
+          throw new Error('REQUEST_ENTITY_TOO_LARGE');
+        } else {
+          throw new Error('FILE_PARSING_FAILED');
+
+        }
+      }
+
       if (!response.body) {
         throw new Error("Response body is null");
       }
@@ -713,8 +724,7 @@ export const conversationService = {
     } catch (error) {
       // If the error is caused by canceling the request, return a specific response instead of throwing an error
       if (error instanceof Error && error.name === 'AbortError') {
-        log.log('文件预处理请求已被取消');
-        throw new Error('请求已被取消');
+        throw new Error('Request has been aborted');
       }
       // Other errors are thrown normally
       throw error;