"""Configuration management for data collection module."""
from pathlib import Path
from pydantic_settings import BaseSettings


class Config(BaseSettings):
    """Application configuration loaded from environment variables."""

    # Tushare API token
    tushare_token: str = ""

    # Data storage path
    data_path: Path = Path("./data")

    # Rate limit: requests per minute
    rate_limit: int = 100

    # Thread pool size
    threads: int = 2

    class Config:
        env_file = ".env.local"
        env_file_encoding = "utf-8"
        case_sensitive = False


# Global config instance
config = Config()


def get_config() -> Config:
    """Get configuration instance."""
    return config