add knowledge-base-search api

api/products/views.py

@@ -2016,4 +2016,124 @@ class AIChatView(BaseView):
             message_type=message_type,
             text_content=content
         )
+
+
+class KnowledgeBaseSearchView(BaseView):
+    """知识库搜索API - 直接检索知识库内容"""
+    name = 'knowledge-base-search'
+    auth_check = None
+    
+    def post(self, request):
+        """搜索知识库"""
+        try:
+            # 获取请求参数
+            query = request.data.get('query')
+            max_results = request.data.get('max_results', 5)
+            tenant_id = request.data.get('tenant_id')
+            
+            # 验证必需参数
+            if not query:
+                return JsonResponse({
+                    'error': 'query is required'
+                }, status=400)
+            
+            # 验证 max_results
+            if not isinstance(max_results, int) or max_results < 1 or max_results > 20:
+                return JsonResponse({
+                    'error': 'max_results must be an integer between 1 and 20'
+                }, status=400)
+            
+            # 导入 RAG 服务
+            try:
+                from .rag_service import CachedLangChainRAG
+            except ImportError as e:
+                return JsonResponse({
+                    'error': f'RAG service not available: {str(e)}'
+                }, status=500)
+            
+            # 创建 RAG 服务实例
+            try:
+                rag_service = CachedLangChainRAG()
+            except Exception as e:
+                return JsonResponse({
+                    'error': f'Failed to initialize RAG service: {str(e)}'
+                }, status=500)
+            
+            # 执行搜索
+            try:
+                results = rag_service.search(
+                    query=query,
+                    max_results=max_results,
+                    tenant_id=tenant_id
+                )
+                
+                return JsonResponse({
+                    'query': query,
+                    'max_results': max_results,
+                    'tenant_id': tenant_id,
+                    'results': results,
+                    'count': len(results)
+                })
+                
+            except Exception as e:
+                import traceback
+                traceback.print_exc()
+                return JsonResponse({
+                    'error': f'Search failed: {str(e)}'
+                }, status=500)
+            
+        except Exception as e:
+            import traceback
+            traceback.print_exc()
+            return JsonResponse({
+                'error': f'Request processing failed: {str(e)}'
+            }, status=500)
+    
+    def get(self, request):
+        """获取知识库搜索使用说明"""
+        return JsonResponse({
+            'name': 'Knowledge Base Search API',
+            'description': 'Search the knowledge base for relevant information',
+            'method': 'POST',
+            'parameters': {
+                'query': {
+                    'type': 'string',
+                    'required': True,
+                    'description': 'The search query'
+                },
+                'max_results': {
+                    'type': 'integer',
+                    'required': False,
+                    'default': 5,
+                    'range': '1-20',
+                    'description': 'Maximum number of results to return'
+                },
+                'tenant_id': {
+                    'type': 'integer',
+                    'required': False,
+                    'description': 'Tenant ID for tenant-specific search'
+                }
+            },
+            'response': {
+                'query': 'The search query',
+                'max_results': 'Maximum results requested',
+                'tenant_id': 'Tenant ID (if provided)',
+                'results': [
+                    {
+                        'article_id': 'Article ID',
+                        'title': 'Article title',
+                        'content': 'Relevant content snippet',
+                        'score': 'Relevance score',
+                        'metadata': 'Additional metadata'
+                    }
+                ],
+                'count': 'Number of results returned'
+            },
+            'example': {
+                'request': {
+                    'query': '支持多语言吗',
+                    'max_results': 3
+                }
+            }
+        })