fix chat issues

src/llm.py

@@ -62,6 +62,8 @@ def setup_prompt_template(theme: int, resume: str,full_history=None,form_respons
         ("system", chat_prompt(theme, resume,full_history,form_response,generate_theme)),
         MessagesPlaceholder(variable_name="messages")
     ])
+
+
 def fetch_conversation_history(conversation_id: str) -> List[Message]:
     """
     Fetch conversation history from the API using the conversation ID.
@@ -74,18 +76,54 @@ def fetch_conversation_history(conversation_id: str) -> List[Message]:
         response = requests.get(url)
         response.raise_for_status()  # Raise an error for bad responses
         data = response.json()["data"]  # First JSON parse
-        data = json.loads(json.loads(data))
+
+        if isinstance(data, str):
+            print("Data is a string, parsing as JSON...")
+            data = json.loads(data)
+           
+
         # Parse the API response into Message objects
         messages = []
-        for item in data:
-            role = item.get("role", "unknown")
-            content = item.get("content", "")
-            timestamp = datetime.now().isoformat()  # Use current timestamp if not provided
-            messages.append(Message(role=role, content=content))
+        
+        # Check if data exists and is a list
+        if data and isinstance(data, list):
+            for item in data:
+               
+                
+                # Check if item is a dictionary
+                if isinstance(item, dict):
+                    role = item.get("role", "unknown")
+                    content = item.get("content", "")
+                    timestamp = datetime.now().isoformat()  # Use current timestamp if not provided
+                    messages.append(Message(role=role, content=content))
+                elif isinstance(item, str):
+                    # If item is a string, it might be JSON that needs parsing
+                    try:
+                        parsed_item = json.loads(item)
+                        if isinstance(parsed_item, dict):
+                            role = parsed_item.get("role", "unknown")
+                            content = parsed_item.get("content", "")
+                            messages.append(Message(role=role, content=content))
+                        else:
+                            print(f"Parsed item is not a dict: {parsed_item}")
+                    except json.JSONDecodeError as json_err:
+                        print(f"Failed to parse JSON string: {item}, error: {json_err}")
+                else:
+                    print(f"Unexpected item type: {type(item)} for item: {item}")
+        else:
+            print(f"No data or data is not a list. Data: {data}")
+            
         return messages
+        
     except requests.RequestException as e:
         print(f"Error fetching conversation history: {e}")
         return []
+    except KeyError as e:
+        print(f"Expected key not found in response: {e}")
+        return []
+    except Exception as e:
+        print(f"Unexpected error: {e}")
+        return []
 
 
 def convert_to_langchain_messages(messages: List[Message]) -> List[HumanMessage | AIMessage]:
@@ -130,6 +168,8 @@ def ai_chat(query: str, conversation_id: str, theme_id: int, resume: str, full_h
     
     # Fetch conversation history from the API
     history = fetch_conversation_history(conversation_id)
+
+    print(history)
     
     config = {"configurable": {"thread_id": conversation_id}}
     language = "English"