config.py

import os

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


class Config:
    SECRET_KEY = os.environ.get('SECRET_KEY') or os.urandom(16)
    MAIL_SERVER = os.environ.get('MAIL_SERVER', 'smtp.gmail.com')
    MAIL_PORT = int(os.environ.get('MAIL_PORT', '587'))
    MAIL_USE_TLS = True
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
    FLASK_MOVIE_SUBJECT = '[FlaskMovies]'
    FLASK_MOVIE_ADMIN = os.environ.get('FLASK_MOVIE_ADMIN')
    FLASK_MOVIE_SENDER = 'Flask Movies'
    SSL_REDIRECT = False

    MOVIES_PER_PAGE = 15

    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SQLALCHEMY_RECORD_QUERIES = True
    SLOW_DB_QUERY_TIME = 0.5

    @staticmethod
    def init_app(app):
        pass


class DevelopmentConfig(Config):
    SQLALCHEMY_DATABASE_URI = os.environ.get('DEV_DATABASE_URL') or \
                              'sqlite:///' + os.path.join(basedir, 'dev_db.sqlite')


class TestingConfig(Config):
    TESTING = True
    SQLALCHEMY_DATABASE_URI = os.environ.get('TEST_DATABASE_URL') or \
                              'sqlite:///' + os.path.join(basedir, 'test_db.sqlite')
    WTF_CSRF_ENABLED = False


class ProductionConfig(Config):
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
                              'sqlite:///' + os.path.join(basedir, 'db.sqlite')

    @classmethod
    def init_app(cls, app):
        Config.init_app(app)

        import logging
        from logging.handlers import SMTPHandler
        credentials = None
        secure = None
        if getattr(cls, 'MAIL_USERNAME', None) is not None:
            credentials = (cls.MAIL_USERNAME, cls.MAIL_PASSWORD)
            if getattr(cls, 'MAIL_USE_TLS', None):
                secure = ()
        mail_handler = SMTPHandler(
            mailhost=(cls.MAIL_SERVER, cls.MAIL_PORT),
            fromaddr=cls.FLASK_MOVIE_SENDER,
            toaddrs=[cls.FLASK_MOVIE_ADMIN],
            subject=cls.FLASK_MOVIE_SUBJECT + ' Application Error',
            credentials=credentials,
            secure=secure
        )
        mail_handler.setLevel(logging.ERROR)
        app.logger.addHandler(mail_handler)


class HerokuConfig(ProductionConfig):
    SSL_REDIRECT = True if os.environ.get('DYNO') else False
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL').replace("://", "ql://", 1)

    @classmethod
    def init_app(cls, app):
        ProductionConfig.init_app(app)

        # handle reverse proxy server headers
        from werkzeug.middleware.proxy_fix import ProxyFix
        app.wsgi_app = ProxyFix(app.wsgi_app)

        import logging
        from logging import StreamHandler
        file_handler = StreamHandler()
        file_handler.setLevel(logging.INFO)
        app.logger.addHandler(file_handler)


config = {
    'development': DevelopmentConfig,
    'testing': TestingConfig,
    'production': ProductionConfig,
    'heroku': HerokuConfig,

    'default': DevelopmentConfig,
}