"""Application configuration.

Centralizes environment-driven Flask config and app-wide constants so they
can be imported by the app factory, services, and route modules without each
reaching into ``os.getenv`` independently.
"""

import os

from dotenv import load_dotenv

# Load .env once when the config module is imported.
load_dotenv()


class Config:
    """Flask configuration loaded from the environment."""

    SECRET_KEY = os.getenv("SECRET_KEY", "dev-secret-key-change-in-production")
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024  # 16MB max request body (avatar uploads)
    ALLOW_ANONYMOUS_ACCESS = os.getenv("ALLOW_ANONYMOUS_ACCESS", "true").lower() == "true"

    # Branding
    APP_NAME = os.getenv("APP_NAME", "BalanceBoard")
    LOGO_PATH = os.getenv("LOGO_PATH", "logo.png")

    # Auth0 (optional; empty disables OAuth login)
    AUTH0_DOMAIN = os.getenv("AUTH0_DOMAIN", "")
    AUTH0_CLIENT_ID = os.getenv("AUTH0_CLIENT_ID", "")
    AUTH0_CLIENT_SECRET = os.getenv("AUTH0_CLIENT_SECRET", "")
    AUTH0_AUDIENCE = os.getenv("AUTH0_AUDIENCE", "")


# App-wide constants (not Flask config keys). Imported directly by modules.
ALLOWED_EXTENSIONS = {"png", "jpg", "jpeg", "gif"}
UPLOAD_FOLDER = "static/avatars"
MAX_FILENAME_LENGTH = 100
DEFAULT_PORT = 5021
DEFAULT_PAGE_SIZE = 20
MIN_PASSWORD_LENGTH = 8
MAX_USERNAME_LENGTH = 80
MAX_EMAIL_LENGTH = 120
MAX_COMMUNITY_NAME_LENGTH = 100