import os

class Config:
    SECRET_KEY = os.environ.get('SECRET_KEY', 'you-will-never-guess')

    DB_USER = os.environ.get('DB_USER', 'postgres')
    DB_PASS = os.environ.get('DB_PASS', 'postgres')
    DB_HOST = os.environ.get('DB_HOST', 'db')
    DB_PORT = os.environ.get('DB_PORT', '5432')
    DB_NAME = os.environ.get('DB_NAME', 'postgres')

    SQLALCHEMY_DATABASE_URI = (
        f'postgresql://{DB_USER}:{DB_PASS}@{DB_HOST}:{DB_PORT}/{DB_NAME}'
    )
    SQLALCHEMY_TRACK_MODIFICATIONS = False