"""JIGAIDO Configuration Management."""

import json
import os
from pathlib import Path
from typing import Optional

DEFAULT_DATA_DIR = Path.home() / ".jigaido"


class Config:
    """JIGAIDO configuration with precedence: ENV > config file > defaults."""

    def __init__(self):
        self.data_dir: Path = self._resolve_data_dir()
        self.bot_token: Optional[str] = os.environ.get("JIGAIDO_BOT_TOKEN")

    def _resolve_data_dir(self) -> Path:
        env_dir = os.environ.get("JIGAIDO_DATA_DIR")
        if env_dir:
            return Path(env_dir)

        config_file = Path("~/.jigaido/config.json").expanduser()
        if config_file.exists():
            with open(config_file) as f:
                config_data = json.load(f)
                if "data_dir" in config_data:
                    return Path(config_data["data_dir"])

        return DEFAULT_DATA_DIR

    def ensure_data_dir(self) -> None:
        """Ensure the data directory exists."""
        self.data_dir.mkdir(parents=True, exist_ok=True)


config = Config()