Function build_system_prompt

src/codegraphcontext/prompts.py:134–175

Build the complete system prompt by prepending custom prompt files. Args: project_root: Root directory of the project. If None, uses current directory. Returns: Complete system prompt with custom prompts prepended to the base prompt.

(project_root: Optional[Path] = None)

def build_system_prompt(project_root: Optional[Path] = None) -> str:
    """
    Build the complete system prompt by prepending custom prompt files.
    
    Args:
        project_root: Root directory of the project. If None, uses current directory.
    
    Returns:
        Complete system prompt with custom prompts prepended to the base prompt.
    """
    # Import here to avoid circular dependencies
    try:
        from codegraphcontext.cli.project_config import get_prompt_file_contents
        
        # Get custom prompt contents
        custom_prompts = get_prompt_file_contents(project_root)
        
        if not custom_prompts:
            # No custom prompts, return base prompt
            return LLM_SYSTEM_PROMPT
        
        # Build combined prompt: custom prompts first, then base prompt
        combined_parts = []
        
        # Add custom prompts
        for i, custom_content in enumerate(custom_prompts, 1):
            combined_parts.append(f"# Custom Instructions {i}\n\n{custom_content}")
        
        # Add separator and base prompt
        combined_parts.append("---\n")
        combined_parts.append(LLM_SYSTEM_PROMPT)
        
        return "\n\n".join(combined_parts)
        
    except ImportError:
        # If project_config is not available (shouldn't happen in normal use)
        logger.warning("Could not import project_config module, using base prompt only")
        return LLM_SYSTEM_PROMPT
    except Exception as e:
        # Log error but continue with base prompt to maintain backward compatibility
        logger.warning(f"Error loading custom prompts: {e}. Using base prompt only.")
        return LLM_SYSTEM_PROMPT