from django.core.management.base import BaseCommand
from django.utils import translation

from utils import importer


class Command(BaseCommand):
    """Takes an OAI PMH url and pulls information into Janeway."""

    help = "Takes an OAI PMH url and pulls information into Janeway."

    def add_arguments(self, parser):
        """Adds arguments to Django's management command-line parser.

        :param parser: the parser to which the required arguments will be added
        :return: None
        """
        parser.add_argument("url")
        parser.add_argument("journal_id")
        parser.add_argument("user_id")
        parser.add_argument(
            "-u",
            "--update",
            action="store_true",
            dest="update",
            default=False,
            help="Updates metadata if the item already exists",
        )
        parser.add_argument(
            "--delete",
            action="store_true",
            dest="delete",
            default=False,
            help="Delete all articles and non-superusers in the database before import",
        )

    def handle(self, *args, **options):
        """Imports an OAI feed into Janeway.

        :param args: None
        :param options: Dictionary containing 'url', 'journal_id', 'user_id', and a boolean '--delete' flag
        :return: None
        """
        translation.activate("en")
        importer.import_oai(**options)