python-mylib/mylib/scripts/email_test_with_config.py

""" Test Email client using mylib.config.Config for configuration """
import datetime
import logging
import sys

from mako.template import Template as MakoTemplate

from mylib.config import Config
from mylib.email import EmailClient

log = logging.getLogger(__name__)


def main(argv=None):  # pylint: disable=too-many-locals,too-many-statements
    """Script main"""
    if argv is None:
        argv = sys.argv[1:]

    config = Config(__doc__, __name__.replace(".", "_"))

    email_client = EmailClient(config=config)
    email_client.configure()

    # Options parser
    parser = config.get_arguments_parser(description=__doc__)

    test_opts = parser.add_argument_group("Test email options")

    test_opts.add_argument(
        "-t",
        "--to",
        action="store",
        type=str,
        dest="test_to",
        help="Test email recipient",
    )

    test_opts.add_argument(
        "-m",
        "--mako",
        action="store_true",
        dest="test_mako",
        help="Test mako templating",
    )

    options = config.parse_arguments_options()

    if not options.test_to:
        parser.error("You must specify test email recipient using -t/--to parameter")
        sys.exit(1)

    email_client.templates = dict(
        test=dict(
            subject="Test email",
            text=(
                "Just a test email sent at {sent_date}."
                if not options.test_mako
                else MakoTemplate("Just a test email sent at ${sent_date}.")
            ),
            html=(
                "<strong>Just a test email.</strong> <small>(sent at {sent_date})</small>"
                if not options.test_mako
                else MakoTemplate(
                    "<strong>Just a test email.</strong> <small>(sent at ${sent_date})</small>"
                )
            ),
        )
    )

    logging.info("Send a test email to %s", options.test_to)
    if email_client.send(options.test_to, template="test", sent_date=datetime.datetime.now()):
        logging.info("Test email sent")
        sys.exit(0)
    logging.error("Fail to send test email")
    sys.exit(1)