M3: console.log -> Logger + UI redesign (QuestionBank) + S7/A9/A10/A11/U11 bug fixes + #1/#2/#3/#4 enhancements + i18n for QuestionBank pages

server/src/chat/chat.controller.ts

@@ -1,6 +1,7 @@
 import {
   Body,
   Controller,
+  Logger,
   Post,
   Request,
   Res,
@@ -36,6 +37,8 @@ class StreamChatDto {
 @Controller('chat')
 @UseGuards(CombinedAuthGuard)
 export class ChatController {
+  private readonly logger = new Logger(ChatController.name);
+
   constructor(
     private chatService: ChatService,
     private modelConfigService: ModelConfigService,
@@ -49,7 +52,7 @@ export class ChatController {
     @Res() res: Response,
   ) {
     try {
-      console.log('Full Request Body:', JSON.stringify(body, null, 2));
+      this.logger.log('Full Request Body:', JSON.stringify(body, null, 2));
       const {
         message,
         history = [],
@@ -71,22 +74,22 @@ export class ChatController {
       } = body;
       const userId = req.user.id;
 
-      console.log('=== Chat Debug Info ===');
-      console.log('User ID:', userId);
-      console.log('Message:', message);
-      console.log('User Language:', userLanguage);
-      console.log('Selected Embedding ID:', selectedEmbeddingId);
-      console.log('Selected LLM ID:', selectedLLMId);
-      console.log('Selected Groups:', selectedGroups);
-      console.log('Selected Files:', selectedFiles);
-      console.log('History ID:', historyId);
-      console.log('Temperature:', temperature);
-      console.log('Max Tokens:', maxTokens);
-      console.log('Top K:', topK);
-      console.log('Similarity Threshold:', similarityThreshold);
-      console.log('Rerank Similarity Threshold:', rerankSimilarityThreshold);
-      console.log('Query Expansion:', enableQueryExpansion);
-      console.log('HyDE:', enableHyDE);
+      this.logger.log('=== Chat Debug Info ===');
+      this.logger.log('User ID:', userId);
+      this.logger.log('Message:', message);
+      this.logger.log('User Language:', userLanguage);
+      this.logger.log('Selected Embedding ID:', selectedEmbeddingId);
+      this.logger.log('Selected LLM ID:', selectedLLMId);
+      this.logger.log('Selected Groups:', selectedGroups);
+      this.logger.log('Selected Files:', selectedFiles);
+      this.logger.log('History ID:', historyId);
+      this.logger.log('Temperature:', temperature);
+      this.logger.log('Max Tokens:', maxTokens);
+      this.logger.log('Top K:', topK);
+      this.logger.log('Similarity Threshold:', similarityThreshold);
+      this.logger.log('Rerank Similarity Threshold:', rerankSimilarityThreshold);
+      this.logger.log('Query Expansion:', enableQueryExpansion);
+      this.logger.log('HyDE:', enableHyDE);
 
       const role = req.user.role;
       const tenantId = req.user.tenantId;
@@ -105,14 +108,14 @@ export class ChatController {
       if (selectedLLMId) {
         // Find specifically selected model
         llmModel = await this.modelConfigService.findOne(selectedLLMId);
-        console.log('使用选中的LLM模型:', llmModel.name);
+        this.logger.log('使用选中的LLM模型:', llmModel.name);
       } else {
         // Use organization's default LLM from Index Chat Config (strict)
         llmModel = await this.modelConfigService.findDefaultByType(
           tenantId,
           ModelType.LLM,
         );
-        console.log(
+        this.logger.log(
           '最终使用的LLM模型 (默认):',
           llmModel ? llmModel.name : '无',
         );
@@ -162,7 +165,7 @@ export class ChatController {
       res.write('data: [DONE]\n\n');
       res.end();
     } catch (error) {
-      console.error('Stream chat error:', error);
+      this.logger.error('Stream chat error:', error);
       try {
         res.write(
           `data: ${JSON.stringify({ type: 'error', data: error.message || 'Server Error' })}\n\n`,
@@ -170,7 +173,7 @@ export class ChatController {
         res.write('data: [DONE]\n\n');
         res.end();
       } catch (writeError) {
-        console.error('Failed to write error response:', writeError);
+        this.logger.error('Failed to write error response:', writeError);
       }
     }
   }
@@ -220,7 +223,7 @@ export class ChatController {
       res.write('data: [DONE]\n\n');
       res.end();
     } catch (error) {
-      console.error('Stream assist error:', error);
+      this.logger.error('Stream assist error:', error);
       res.write(
         `data: ${JSON.stringify({ type: 'error', data: error.message || 'Server Error' })}\n\n`,
       );

server/src/chat/chat.service.ts

@@ -71,30 +71,30 @@ export class ChatService {
     enableHyDE?: boolean, // New
     tenantId?: string, // New: tenant isolation
   ): AsyncGenerator<{ type: 'content' | 'sources' | 'historyId'; data: any }> {
-    console.log('=== ChatService.streamChat ===');
-    console.log('User ID:', userId);
-    console.log('User language:', userLanguage);
-    console.log('Selected embedding model ID:', selectedEmbeddingId);
-    console.log('Selected groups:', selectedGroups);
-    console.log('Selected files:', selectedFiles);
-    console.log('History ID:', historyId);
-    console.log('Temperature:', temperature);
-    console.log('Max Tokens:', maxTokens);
-    console.log('Top K:', topK);
-    console.log('Similarity threshold:', similarityThreshold);
-    console.log('Rerank threshold:', rerankSimilarityThreshold);
-    console.log('Query expansion:', enableQueryExpansion);
-    console.log('HyDE:', enableHyDE);
-    console.log('Model configuration:', {
+    this.logger.log('=== ChatService.streamChat ===');
+    this.logger.log('User ID:', userId);
+    this.logger.log('User language:', userLanguage);
+    this.logger.log('Selected embedding model ID:', selectedEmbeddingId);
+    this.logger.log('Selected groups:', selectedGroups);
+    this.logger.log('Selected files:', selectedFiles);
+    this.logger.log('History ID:', historyId);
+    this.logger.log('Temperature:', temperature);
+    this.logger.log('Max Tokens:', maxTokens);
+    this.logger.log('Top K:', topK);
+    this.logger.log('Similarity threshold:', similarityThreshold);
+    this.logger.log('Rerank threshold:', rerankSimilarityThreshold);
+    this.logger.log('Query expansion:', enableQueryExpansion);
+    this.logger.log('HyDE:', enableHyDE);
+    this.logger.log('Model configuration:', {
       name: modelConfig.name,
       modelId: modelConfig.modelId,
       baseUrl: modelConfig.baseUrl,
     });
-    console.log(
+    this.logger.log(
       'API Key prefix:',
       modelConfig.apiKey?.substring(0, 10) + '...',
     );
-    console.log('API Key length:', modelConfig.apiKey?.length);
+    this.logger.log('API Key length:', modelConfig.apiKey?.length);
 
     // Get current language setting (keeping LANGUAGE_CONFIG for backward compatibility, now uses i18n service)
     // Use actual language based on user settings
@@ -113,7 +113,7 @@ export class ChatService {
           selectedGroups,
         );
         currentHistoryId = searchHistory.id;
-        console.log(
+        this.logger.log(
           this.i18nService.getMessage(
             'creatingHistory',
             effectiveUserLanguage,
@@ -143,7 +143,7 @@ export class ChatService {
         );
       }
 
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage(
           'usingEmbeddingModel',
           effectiveUserLanguage,
@@ -156,7 +156,7 @@ export class ChatService {
       );
 
       // 2. Search using user's query directly
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage('startingSearch', effectiveUserLanguage),
       );
       yield {
@@ -204,7 +204,7 @@ export class ChatService {
         // HybridSearch returns ES hit structure, but RagSearchResult is normalized
         // BuildContext expects {fileName, content}. RagSearchResult has these
         searchResults = ragResults;
-        console.log(
+        this.logger.log(
           this.i18nService.getMessage(
             'searchResultsCount',
             effectiveUserLanguage,
@@ -274,7 +274,7 @@ export class ChatService {
           };
         }
       } catch (searchError) {
-        console.error(
+        this.logger.error(
           this.i18nService.getMessage(
             'searchFailedLog',
             effectiveUserLanguage,
@@ -461,14 +461,14 @@ ${instruction}`;
     try {
       // Join keywords into search string
       const combinedQuery = keywords.join(' ');
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage('searchString', userLanguage) +
           combinedQuery,
       );
 
       // Check if embedding model ID is provided
       if (!embeddingModelId) {
-        console.log(
+        this.logger.log(
           this.i18nService.getMessage(
             'embeddingModelIdNotProvided',
             userLanguage,
@@ -478,7 +478,7 @@ ${instruction}`;
       }
 
       // Use actual embedding vector
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage('generatingEmbeddings', userLanguage),
       );
       const queryEmbedding = await this.embeddingService.getEmbeddings(
@@ -486,7 +486,7 @@ ${instruction}`;
         embeddingModelId,
       );
       const queryVector = queryEmbedding[0];
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage('embeddingsGenerated', userLanguage) +
           this.i18nService.getMessage('dimensions', userLanguage) +
           ':',
@@ -494,7 +494,7 @@ ${instruction}`;
       );
 
       // Hybrid search
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage('performingHybridSearch', userLanguage),
       );
       const results = await this.elasticsearchService.hybridSearch(
@@ -507,7 +507,7 @@ ${instruction}`;
         explicitFileIds, // Pass explicit file IDs
         tenantId, // Pass tenant ID
       );
-      console.log(
+      this.logger.log(
         this.i18nService.getMessage('esSearchCompleted', userLanguage) +
           this.i18nService.getMessage('resultsCount', userLanguage) +
           ':',
@@ -516,7 +516,7 @@ ${instruction}`;
 
       return results.slice(0, 10);
     } catch (error) {
-      console.error(
+      this.logger.error(
         this.i18nService.getMessage('hybridSearchFailed', userLanguage) + ':',
         error,
       );