try:
    from livekit.agents.llm import ChatContext, ChatMessage
    print("Successfully imported livekit.agents.llm")
    
    ctx = ChatContext()
    ctx.add_message(role="user", content="Hello")
    
    # Verify 'items' property
    if hasattr(ctx, 'items'):
        print(f"ctx.items type: {type(ctx.items)}")
        print(f"ctx.items content: {ctx.items}")
        
        # Try appending to items
        try:
            ctx.items.append(ChatMessage(role="system", content="Injected"))
            print("Successfully appended to ctx.items")
            print(f"ctx.items content after append: {ctx.items}")
        except Exception as e:
            print(f"Failed to append to ctx.items: {e}")
            
    # Verify 'insert' method
    if hasattr(ctx, 'insert'):
        try:
            ctx.messages.insert(0, ChatMessage(role="system", content="Inserted"))
        except AttributeError:
             print("ctx.messages.insert failed as expected")
             
        try:
            # Try ctx.insert(index, item) ?
            # Or ctx.items.insert?
             pass
        except:
            pass

    # Try to verify how to insert at beginning
    try:
        # Check if we can do ctx.messages.insert replacement
        # option 1: ctx.items.insert(0, msg)
        ctx.items.insert(0, ChatMessage(role="system", content="Inserted at 0"))
        print("Successfully inserted into ctx.items")
    except Exception as e:
        print(f"Failed to insert into ctx.items: {e}")

except ImportError:
    print("Could not import livekit.agents.llm")
except Exception as e:
    print(f"An error occurred: {e}")