from pathlib import Path
from functools import lru_cache


PROMPTS_DIR = Path(__file__).parent.parent.parent / "prompts"


@lru_cache()
def load_prompt(filename: str) -> str:
    prompt_path = PROMPTS_DIR / filename
    with open(prompt_path, "r", encoding="utf-8") as f:
        return f.read().strip()


def get_system_prompt() -> str:
    return load_prompt("system.txt")


def get_rag_template() -> str:
    return load_prompt("rag_template.txt")


def get_conversation_template() -> str:
    return load_prompt("conversation_template.txt")