# -*- coding: utf-8 -*-
"""実行ログ出力モジュール。日付別ファイル・UTF-8 BOM付き。"""
from __future__ import annotations

from datetime import datetime
from pathlib import Path
from typing import Callable

LOG_ENCODING = "utf-8-sig"


def log_path_for_today(
    log_dir: Path, now_func: Callable[[], datetime] = datetime.now
) -> Path:
    return log_dir / f"{now_func().strftime('%Y-%m-%d')}.log"


def append_log(
    log_dir: Path,
    result: str,
    original_filename: str,
    name: str | None,
    date: str | None,
    note: str = "",
    now_func: Callable[[], datetime] = datetime.now,
) -> None:
    log_dir.mkdir(parents=True, exist_ok=True)
    now = now_func()
    line = (
        f"[{now.strftime('%Y-%m-%d %H:%M:%S')}] "
        f"結果={result} | 元ファイル={original_filename} | "
        f"氏名={name or ''} | 日付={date or ''} | 備考={note}\n"
    )
    path = log_path_for_today(log_dir, now_func)
    with open(path, "a", encoding=LOG_ENCODING) as f:
        f.write(line)