import logging
import os


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


DEFAULT_DATA_DIR = os.path.join('/mnt/nopaque')
DEFAULT_DB_PORT = '5432'
DEFAULT_DOMAIN = 'localhost'
DEFAULT_LOG_DATE_FORMAT = '%Y-%m-%d %H:%M:%S'
DEFAULT_LOG_FILE = os.path.join(root_dir, 'nopaqued.log')
DEFAULT_LOG_FORMAT = ('[%(asctime)s] %(levelname)s in %(pathname)s '
                      '(function: %(funcName)s, line: %(lineno)d): '
                      '%(message)s')
DEFAULT_LOG_LEVEL = 'ERROR'
DEFAULT_MAIL_USE_SSL = 'False'
DEFAULT_MAIL_USE_TLS = 'False'
DEFAULT_PROTOCOL = 'http'


class Config:
    ''' ### Database ### '''
    DB_HOST = os.environ.get('NOPAQUE_DB_HOST')
    DB_NAME = os.environ.get('NOPAQUE_DB_NAME')
    DB_PASSWORD = os.environ.get('NOPAQUE_DB_PASSWORD')
    DB_PORT = os.environ.get('NOPAQUE_DB_PORT', DEFAULT_DB_PORT)
    DB_USERNAME = os.environ.get('NOPAQUE_DB_USERNAME')
    SQLALCHEMY_DATABASE_URI = 'postgresql://{}:{}@{}:{}/{}'.format(
        DB_USERNAME, DB_PASSWORD, DB_HOST, DB_PORT, DB_NAME)

    ''' ### SMTP ### '''
    SMTP_DEFAULT_SENDER = os.environ.get('NOPAQUE_SMTP_DEFAULT_SENDER')
    SMTP_PASSWORD = os.environ.get('NOPAQUE_SMTP_PASSWORD')
    SMTP_PORT = 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',
                                  DEFAULT_MAIL_USE_SSL).lower() == 'true'
    SMTP_USE_TLS = os.environ.get('NOPAQUE_SMTP_USE_TLS',
                                  DEFAULT_MAIL_USE_TLS).lower() == 'true'

    ''' ### General ### '''
    DATA_DIR = os.environ.get('NOPAQUE_DATA_DIR', DEFAULT_DATA_DIR)
    DOMAIN = os.environ.get('NOPAQUE_DOMAIN', DEFAULT_DOMAIN)
    PROTOCOL = os.environ.get('NOPAQUE_PROTOCOL', DEFAULT_PROTOCOL)

    ''' ### Logging ### '''
    LOG_DATE_FORMAT = os.environ.get('NOPAQUE_LOG_DATE_FORMAT',
                                     DEFAULT_LOG_DATE_FORMAT)
    LOG_FILE = os.environ.get('NOPAQUE_DAEMON_LOG_FILE', DEFAULT_LOG_FILE)
    LOG_FORMAT = os.environ.get('NOPAQUE_LOG_FORMAT', DEFAULT_LOG_FORMAT)
    LOG_LEVEL = os.environ.get('NOPAQUE_LOG_LEVEL', DEFAULT_LOG_LEVEL)

    def init_app(self):
        # Configure logging according to the corresponding (LOG_*) config
        # entries
        logging.basicConfig(datefmt=self.LOG_DATE_FORMAT,
                            filename=self.LOG_FILE,
                            format=self.LOG_FORMAT,
                            level=self.LOG_LEVEL)