config.py

import os
from dotenv import load_dotenv

basedir = os.path.dirname(os.path.abspath(__file__))
load_dotenv(os.path.join(basedir, '.env'))


class Config(object):
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'the-secret-remains-a-challenge-to-the-one'
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
        'sqlite:///' + os.path.join(basedir, 'app.db')
    SQLALCHEMY_TRACK_MODIFICATIONS = False

    UPLOAD_IMAGE = os.path.join(basedir, 'app/static/img')
    ALLOWED_EXTENSIONS = set(['png', 'jpg', 'jpeg', 'gif'])

    MAIL_SERVER = os.environ.get('MAIL_SERVER')
    MAIL_PORT = int(os.environ.get('MAIL_PORT') or 25)
    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS') is not None
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
    ADMINS = ['wolframfriele@gmail.com']
    SESSION_COOKIE_SECURE = True
    SESSION_COOKIE_HTTPONLY = True
    SESSION_COOKIE_SAMESITE = 'Lax'
    CSRF_COOKIE_SECURE = True
    CSRF_COOKIE_HTTPONLY = True
    CSRF_COOKIE_SAMESITE = 'Lax'

    def allowed_file(filename):
        return '.' in filename and \
               filename.rsplit('.', 1)[1].lower() in Config.ALLOWED_EXTENSIONS

    def no_duplicate(filename):
        path = basedir + "/app/static/img"

        for name in os.listdir(path):
            if name == filename:
                return False
        return True