__copyright__ = "Copyright 2017 Birkbeck, University of London"
__author__ = "Martin Paul Eve & Andy Byers"
__license__ = "AGPL v3"
__maintainer__ = "Birkbeck Centre for Technology and Publishing"

from django.db.utils import OperationalError
from django.contrib.contenttypes.models import ContentType

PLUGIN_NAME = "Preprints"
DESCRIPTION = "This is a homepage element that renders a Preprint section."
AUTHOR = "Martin Paul Eve & Andy Byers"


def install():
    import core.models as core_models
    import press.models as press_models

    presses = press_models.Press.objects.all()

    for press in presses:
        content_type = ContentType.objects.get_for_model(press)
        element, created = core_models.HomepageElement.objects.get_or_create(
            name=PLUGIN_NAME,
            configure_url="preprints",
            template_path="journal/homepage_elements/preprints.html",
            content_type=content_type,
            object_id=press.pk,
            has_config=True,
        )

        element.save()


def hook_registry():
    try:
        return {
            "yield_homepage_element_context": {
                "module": "core.homepage_elements.preprints.hooks",
                "function": "yield_homepage_element_context",
                "name": PLUGIN_NAME,
            }
        }
    except OperationalError:
        # if we get here the database hasn't yet been created
        return {}
    except BaseException:
        return {}