from werkzeug.middleware.proxy_fix import ProxyFix
import logging
import os


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


class Config:
    ''' # Cookies # '''
    REMEMBER_COOKIE_HTTPONLY = True
    REMEMBER_COOKIE_SECURE = os.environ.get(
        'NOPAQUE_REMEMBER_COOKIE_SECURE', 'false').lower() == 'true'
    SESSION_COOKIE_SECURE = os.environ.get(
        'NOPAQUE_SESSION_COOKIE_SECURE', 'false').lower() == 'true'

    ''' # Database # '''
    SQLALCHEMY_RECORD_QUERIES = True
    SQLALCHEMY_TRACK_MODIFICATIONS = False

    ''' # Email # '''
    MAIL_DEFAULT_SENDER = os.environ.get('NOPAQUE_SMTP_DEFAULT_SENDER')
    MAIL_PASSWORD = os.environ.get('NOPAQUE_SMTP_PASSWORD')
    MAIL_PORT = int(os.environ.get('NOPAQUE_SMTP_PORT'))
    MAIL_SERVER = os.environ.get('NOPAQUE_SMTP_SERVER')
    MAIL_USERNAME = os.environ.get('NOPAQUE_SMTP_USERNAME')
    MAIL_USE_SSL = os.environ.get(
        'NOPAQUE_SMTP_USE_SSL', 'false').lower() == 'true'
    MAIL_USE_TLS = os.environ.get(
        'NOPAQUE_SMTP_USE_TLS', 'false').lower() == 'true'

    ''' # General # '''
    ADMIN_EMAIL_ADRESS = os.environ.get('NOPAQUE_ADMIN_EMAIL_ADRESS')
    ALLOWED_USERNAME_REGEX = '^[A-Za-zÄÖÜäöüß0-9_.]*$'
    CONTACT_EMAIL_ADRESS = os.environ.get('NOPAQUE_CONTACT_EMAIL_ADRESS')
    DATA_DIR = os.environ.get('NOPAQUE_DATA_DIR', '/mnt/nopaque')
    SECRET_KEY = os.environ.get('NOPAQUE_SECRET_KEY', 'hard to guess string')

    ''' # Logging # '''
    LOG_DATE_FORMAT = os.environ.get('NOPAQUE_LOG_DATE_FORMAT',
                                     '%Y-%m-%d %H:%M:%S')
    LOG_FILE = os.environ.get('NOPAQUE_LOG_FILE',
                              os.path.join(ROOT_DIR, 'nopaque.log'))
    LOG_FORMAT = os.environ.get(
        'NOPAQUE_LOG_FORMAT',
        '[%(asctime)s] %(levelname)s in '
        '%(pathname)s (function: %(funcName)s, line: %(lineno)d): %(message)s'
    )
    LOG_LEVEL = os.environ.get('NOPAQUE_LOG_LEVEL', 'WARNING')

    ''' # Message queue # '''
    SOCKETIO_MESSAGE_QUEUE_URI = os.environ.get(
        'NOPAQUE_SOCKETIO_MESSAGE_QUEUE_URI')

    ''' # Proxy fix # '''
    PROXY_FIX_X_FOR = int(os.environ.get('NOPAQUE_PROXY_FIX_X_FOR', '0'))
    PROXY_FIX_X_HOST = int(os.environ.get('NOPAQUE_PROXY_FIX_X_HOST', '0'))
    PROXY_FIX_X_PORT = int(os.environ.get('NOPAQUE_PROXY_FIX_X_PORT', '0'))
    PROXY_FIX_X_PREFIX = int(os.environ.get('NOPAQUE_PROXY_FIX_X_PREFIX', '0'))
    PROXY_FIX_X_PROTO = int(os.environ.get('NOPAQUE_PROXY_FIX_X_PROTO', '0'))

    @classmethod
    def init_app(cls, app):
        # Set up logging according to the corresponding (LOG_*) variables
        logging.basicConfig(datefmt=cls.LOG_DATE_FORMAT,
                            filename=cls.LOG_FILE,
                            format=cls.LOG_FORMAT,
                            level=cls.LOG_LEVEL)
        # Set up and apply the ProxyFix middleware according to the
        # corresponding (PROXY_FIX_*) variables
        app.wsgi_app = ProxyFix(app.wsgi_app,
                                x_for=cls.PROXY_FIX_X_FOR,
                                x_host=cls.PROXY_FIX_X_HOST,
                                x_port=cls.PROXY_FIX_X_PORT,
                                x_prefix=cls.PROXY_FIX_X_PREFIX,
                                x_proto=cls.PROXY_FIX_X_PROTO)


class DevelopmentConfig(Config):
    ''' # Database # '''
    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'NOPAQUE_DEV_DATABASE_URL',
        'postgresql://nopaque:nopaque@db/nopaque_dev'
    )

    ''' # General # '''
    DEBUG = True


class ProductionConfig(Config):
    ''' # Database # '''
    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'NOPAQUE_DATABASE_URL', 'postgresql://nopaque:nopaque@db/nopaque')


class TestingConfig(Config):
    ''' # Database # '''
    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'NOPAQUE_TEST_DATABASE_URL',
        'postgresql://nopaque:nopaque@db/nopaque_test'
    )

    ''' # General # '''
    TESTING = True
    WTF_CSRF_ENABLED = False


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