Feat: add total in List dataset API (#10448)

### What problem does this PR solve?

Feat: add total in List dataset API,  solved #10360 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

api/apps/sdk/dataset.py

@@ -461,7 +461,7 @@ def list_datasets(tenant_id):
                 return get_error_permission_result(message=f"User '{tenant_id}' lacks permission for dataset '{name}'")
 
         tenants = TenantService.get_joined_tenants_by_user_id(tenant_id)
-        kbs = KnowledgebaseService.get_list(
+        kbs, total = KnowledgebaseService.get_list(
             [m["tenant_id"] for m in tenants],
             tenant_id,
             args["page"],
@@ -475,7 +475,7 @@ def list_datasets(tenant_id):
         response_data_list = []
         for kb in kbs:
             response_data_list.append(remap_dictionary_keys(kb))
-        return get_result(data=response_data_list)
+        return get_result(data=response_data_list, total=total)
     except OperationalError as e:
         logging.exception(e)
         return get_error_data_result(message="Database operation failed")

api/db/services/knowledgebase_service.py

@@ -379,6 +379,7 @@ class KnowledgebaseService(CommonService):
         #     name: Optional name filter
         # Returns:
         #     List of knowledge bases
+        #     Total count of knowledge bases
         kbs = cls.model.select()
         if id:
             kbs = kbs.where(cls.model.id == id)
@@ -390,6 +391,7 @@ class KnowledgebaseService(CommonService):
                 cls.model.tenant_id == user_id))
             & (cls.model.status == StatusEnum.VALID.value)
         )
+
         if desc:
             kbs = kbs.order_by(cls.model.getter_by(orderby).desc())
         else:
@@ -397,7 +399,7 @@ class KnowledgebaseService(CommonService):
 
         kbs = kbs.paginate(page_number, items_per_page)
 
-        return list(kbs.dicts())
+        return list(kbs.dicts()), kbs.count()
 
     @classmethod
     @DB.connection_context()

api/utils/api_utils.py

@@ -362,16 +362,27 @@ def token_required(func):
     return decorated_function
 
 
-def get_result(code: settings.RetCode = settings.RetCode.SUCCESS, message="", data=None):
-    if code == 0:
-        if data is not None:
-            response = {"code": code, "data": data}
-        else:
+def get_result(code=settings.RetCode.SUCCESS, message="", data=None, total=None):
+    """
+    Standard API response format:
+    {
+        "code": 0,
+        "data": [...],        # List or object, backward compatible
+        "total": 47,          # Optional field for pagination
+        "message": "..."      # Error or status message
+    }
+    """
     response = {"code": code}
-    else:
-        response = {"code": code, "message": message}
-    return jsonify(response)
 
+    if code == settings.RetCode.SUCCESS:
+        if data is not None:
+            response["data"] = data
+        if total is not None:
+            response["total_datasets"] = total
+    else:
+        response["message"] = message or "Error"
+
+    return jsonify(response)
 
 def get_error_data_result(
         message="Sorry! Data missing!",

docs/references/http_api_reference.md

@@ -830,7 +830,8 @@ Success:
             "update_time": 1728533243536,
             "vector_similarity_weight": 0.3
         }
-    ]
+    ],
+    "total": 1
 }
 ```
 
@@ -1280,7 +1281,7 @@ Success:
                 "update_time": 1728897061948
             }
         ],
-        "total": 1
+        "total_datasets": 1
     }
 }
 ```