import logging
import os


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


class Config:
    ''' # Email # '''
    SMTP_DEFAULT_SENDER = os.environ.get('NOPAQUE_SMTP_DEFAULT_SENDER')
    SMTP_PASSWORD = os.environ.get('NOPAQUE_SMTP_PASSWORD')
    SMTP_PORT = int(os.environ.get('NOPAQUE_SMTP_PORT'))
    SMTP_SERVER = os.environ.get('NOPAQUE_SMTP_SERVER')
    SMTP_USERNAME = os.environ.get('NOPAQUE_SMTP_USERNAME')
    SMTP_USE_SSL = os.environ.get(
        'NOPAQUE_SMTP_USE_SSL', 'false').lower() == 'true'
    SMTP_USE_TLS = os.environ.get(
        'NOPAQUE_SMTP_USE_TLS', 'false').lower() == 'true'

    ''' # General # '''
    DATA_DIR = os.environ.get('NOPAQUE_DATA_DIR', '/mnt/nopaque')
    DOMAIN = os.environ.get('NOPAQUE_DOMAIN', 'localhost')
    PROTOCOL = os.environ.get('NOPAQUE_PROTOCOL', 'http')
    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('NOPAQUED_LOG_FILE',
                              os.path.join(ROOT_DIR, 'nopaqued.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')

    @classmethod
    def init(cls):
        # 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)


class DevelopmentConfig(Config):
    ''' # Database # '''
    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'NOPAQUE_DEV_DATABASE_URL',
        'sqlite:///' + os.path.join(ROOT_DIR, 'data-dev.sqlite')
    )


class ProductionConfig(Config):
    ''' # Database # '''
    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'NOPAQUE_DATABASE_URL',
        'sqlite:///' + os.path.join(ROOT_DIR, 'data.sqlite')
    )


class TestingConfig(Config):
    ''' # Database # '''
    SQLALCHEMY_DATABASE_URI = os.environ.get(
        'NOPAQUE_TEST_DATABASE_URL', 'sqlite://')


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