# prompt_format.py
from __future__ import annotations

RESPONSE_TAG = "### Response:"


def format_instruction_prompt(instruction: str, inp: str | None = None) -> str:
    instruction = (instruction or "").strip()
    inp = (inp or "").strip() if inp is not None else ""

    if inp:
        return (
            f"### Instruction:\n{instruction}\n\n"
            f"### Input:\n{inp}\n\n"
            f"{RESPONSE_TAG}\n"
        )
    else:
        return (
            f"### Instruction:\n{instruction}\n\n"
            f"{RESPONSE_TAG}\n"
        )