import os
basedir = os.path.abspath(os.path.dirname(__file__))

class Config:
    SECRET_KEY = os.environ.get("SECRET_KEY", "D8pceNZ8q%YR7^7F&9wAC2")

    DB_ENGINE = os.environ.get("DB_ENGINE", "sqlite").lower()
    if DB_ENGINE == "sqlite":
        SQLALCHEMY_DATABASE_URI = f"sqlite:///{os.path.join(basedir, 'instance', 'shopping.db')}"
    elif DB_ENGINE == "pgsql":
        SQLALCHEMY_DATABASE_URI = f"postgresql://{os.environ['DB_USER']}:{os.environ['DB_PASSWORD']}@{os.environ['DB_HOST']}:{os.environ.get('DB_PORT', 5432)}/{os.environ['DB_NAME']}"
    elif DB_ENGINE == "mysql":
        SQLALCHEMY_DATABASE_URI = f"mysql+pymysql://{os.environ['DB_USER']}:{os.environ['DB_PASSWORD']}@{os.environ['DB_HOST']}:{os.environ.get('DB_PORT', 3306)}/{os.environ['DB_NAME']}"
    else:
        raise ValueError("Nieobsługiwany typ bazy danych.")

    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SYSTEM_PASSWORD = os.environ.get("SYSTEM_PASSWORD", "admin")
    DEFAULT_ADMIN_USERNAME = os.environ.get("DEFAULT_ADMIN_USERNAME", "admin")
    DEFAULT_ADMIN_PASSWORD = os.environ.get("DEFAULT_ADMIN_PASSWORD", "admin123")
    UPLOAD_FOLDER = os.environ.get("UPLOAD_FOLDER", "uploads")
    AUTHORIZED_COOKIE_VALUE = os.environ.get("AUTHORIZED_COOKIE_VALUE", "cookievalue")
    try:
        AUTH_COOKIE_MAX_AGE = int(os.environ.get("AUTH_COOKIE_MAX_AGE", "86400") or "86400")
    except ValueError:
        AUTH_COOKIE_MAX_AGE = 86400

    HEALTHCHECK_TOKEN = os.environ.get("HEALTHCHECK_TOKEN", "alamapsaikota1234")
    try:
        SESSION_TIMEOUT_MINUTES = int(os.environ.get("SESSION_TIMEOUT_MINUTES", "10080") or "10080")
    except ValueError:
        SESSION_TIMEOUT_MINUTES = 10080

    ENABLE_HSTS = os.environ.get("ENABLE_HSTS", "0") == "1"
    ENABLE_XFO = os.environ.get("ENABLE_XFO", "0") == "1"
    ENABLE_XCTO = os.environ.get("ENABLE_XCTO", "0") == "1"
    ENABLE_CSP = os.environ.get("ENABLE_CSP", "0") == "1"
    ENABLE_PP = os.environ.get("ENABLE_PP", "0") == "1"