Update date and time to UTC format

src/db/mongodb_store.py

@@ -32,7 +32,7 @@ class MongoDBStore:
             "file_size": file_size,
             "url_path": url_path,
             "source": source,
-            "upload_timestamp": datetime.now()
+            "upload_timestamp": datetime.utcnow()
         }
 
         await self.documents.insert_one(document)
@@ -115,8 +115,8 @@ class MongoDBStore:
         """
         conversation = {
             "conversation_id": conversation_id,
-            "created_at": datetime.now(),
-            "last_updated": datetime.now(),
+            "created_at": datetime.utcnow(),
+            "last_updated": datetime.utcnow(),
             "message_count": 0,
             "metadata": metadata or {}
         }
@@ -155,7 +155,7 @@ class MongoDBStore:
             {
                 "$set": {
                     "metadata": metadata,
-                    "last_updated": datetime.now()
+                    "last_updated": datetime.utcnow()
                 }
             }
         )
@@ -176,7 +176,7 @@ class MongoDBStore:
         # Store user message
         user_message = {
             "conversation_id": conversation_id,
-            "timestamp": datetime.now(),
+            "timestamp": datetime.utcnow(),
             "role": "user",
             "content": query,
             "query": query,  # Keep for backward compatibility
@@ -192,7 +192,7 @@ class MongoDBStore:
         # Store assistant message
         assistant_message = {
             "conversation_id": conversation_id,
-            "timestamp": datetime.now(),
+            "timestamp": datetime.utcnow(),
             "role": "assistant",
             "content": response,
             "query": None,
@@ -209,7 +209,7 @@ class MongoDBStore:
         await self.conversations.update_one(
             {"conversation_id": conversation_id},
             {
-                "$set": {"last_updated": datetime.now()},
+                "$set": {"last_updated": datetime.utcnow()},
                 # Increment by 2 since we store both messages
                 "$inc": {"message_count": 2}
             },
@@ -291,7 +291,7 @@ class MongoDBStore:
             await self.update_conversation_metadata(
                 conversation_id,
                 {
-                    "last_feedback": datetime.now(),
+                    "last_feedback": datetime.utcnow(),
                     "last_rating": rating if rating is not None else None,
                     "formatted_rating": formatted_rating if rating is not None else None
                 }
@@ -348,7 +348,7 @@ class MongoDBStore:
             "document_id": document_id,
             "chunk_id": chunk_id,
             "metadata": metadata,
-            "created_at": datetime.now()
+            "created_at": datetime.utcnow()
         }
 
         result = await self.db.vector_metadata.insert_one(vector_metadata)

src/main.py

@@ -550,7 +550,7 @@ async def chat_endpoint(
             context=response.context_docs,
             sources=response.sources,
             conversation_id=conversation_id,
-            timestamp=datetime.now(),
+            timestamp=datetime.utcnow(),
             relevant_doc_scores=response.scores if hasattr(
                 response, 'scores') else None,
             metadata=metadata

src/models/rag.py

@@ -3,6 +3,7 @@ from dataclasses import dataclass
 from typing import List, Optional, Dict
 from datetime import datetime
 
+
 @dataclass
 class Message:
     """Single message in a conversation"""
@@ -10,6 +11,7 @@ class Message:
     content: str
     timestamp: datetime
 
+
 @dataclass
 class ConversationContext:
     """Conversation context with history"""
@@ -21,12 +23,13 @@ class ConversationContext:
         self.messages.append(Message(
             role=role,
             content=content,
-            timestamp=datetime.now()
+            timestamp=datetime.utcnow()
         ))
         # Keep only the most recent messages
         if len(self.messages) > self.max_messages:
             self.messages = self.messages[-self.max_messages:]
 
+
 @dataclass
 class RAGResponse:
     """Enhanced RAG response with conversation context"""
@@ -34,4 +37,4 @@ class RAGResponse:
     context_docs: Optional[List[str]] = None
     sources: Optional[List[Dict]] = None
     scores: Optional[List[float]] = None
-    conversation_context: Optional[ConversationContext] = None
+    conversation_context: Optional[ConversationContext] = None

src/utils/document_processor.py

@@ -455,7 +455,7 @@ class DocumentProcessor:
             'mime_type': self._get_mime_type(file_path),
             'word_count': len(content.split()),
             'character_count': len(content),
-            'processing_timestamp': datetime.now().isoformat()
+            'processing_timestamp': datetime.utcnow().isoformat()
         }
 
         # Add Excel-specific metadata if applicable