"""
PaperJet backend configuration.

All settings are driven by environment variables (see .env.example).
"""

from pathlib import Path
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""

    # --- Security ---
    SECRET_KEY: str = "change-me-in-production"

    # --- Upload ---
    MAX_UPLOAD_MB: int = 200

    # --- Retention ---
    TRASH_RETENTION_DAYS: int = 30
    AUTO_VERSION_RETENTION_DAYS: int = 30

    # --- Cookie ---
    COOKIE_SECURE: bool = False  # Set True in production (behind HTTPS proxy)
    COOKIE_MAX_AGE_SECONDS: int = 7 * 24 * 60 * 60  # 7 days
    COOKIE_NAME: str = "paperjet_session"

    # --- Database ---
    DATABASE_PATH: Path = Path("/data/db/app.sqlite")

    # --- Storage ---
    PDF_STORAGE_PATH: Path = Path("/data/pdfs")
    THUMBNAILS_PATH: Path = Path("/data/thumbnails")

    # --- App ---
    APP_VERSION: str = "0.1.0"
    DEBUG: bool = False

    # --- Rate Limiting ---
    LOGIN_MAX_ATTEMPTS: int = 5
    LOGIN_LOCKOUT_SECONDS: int = 900  # 15 minutes

    model_config = {"env_prefix": "PAPERJET_", "env_file": ".env", "extra": "ignore"}


settings = Settings()