Source code for scipost.feeds

__copyright__ = "Copyright © Stichting SciPost (SciPost Foundation)"
__license__ = "AGPL v3"


import datetime

from django.contrib.syndication.views import Feed
from django.http import Http404
from django.utils.feedgenerator import Atom1Feed
from django.urls import reverse
from django.db.models import Q

from careers.models import JobOpening
from comments.models import Comment
from commentaries.models import Commentary
from journals.models import Publication
from news.models import NewsItem
from submissions.models import Submission
from theses.models import ThesisLink


class LatestCommentsFeedRSS(Feed):
    title = "SciPost: Latest Comments"
    description = "SciPost: Latest Comments"
    link = "/comments/"

    def items(self):
        return Comment.objects.vetted().order_by("-date_submitted")[:10]

    def item_title(self, item):
        return item.comment_text[:50]

    def item_description(self, item):
        return item.comment_text[:50]

    def item_link(self, item):
        if isinstance(item.content_object, Commentary):
            return reverse(
                "commentaries:commentary",
                kwargs={"arxiv_or_DOI_string": item.content_object.arxiv_or_DOI_string},
            )
        elif isinstance(item.content_object, Submission):
            return reverse(
                "submissions:submission",
                kwargs={
                    "identifier_w_vn_nr": item.content_object.preprint.identifier_w_vn_nr
                },
            )
        elif isinstance(item.content_object, ThesisLink):
            return reverse(
                "theses:thesis", kwargs={"thesislink_id": item.thesislink.id}
            )
        else:
            return reverse("scipost:index")


class LatestCommentsFeedAtom(LatestCommentsFeedRSS):
    feed_type = Atom1Feed
    subtitle = LatestCommentsFeedRSS.description

    def author_name(self):
        return "SciPost"

    def item_updateddate(self, item):
        return item.date_submitted


class LatestNewsFeedRSS(Feed):
    title = "SciPost: Latest News"
    link = "/news/"
    description = "SciPost: recent news and announcements"

    def items(self):
        return NewsItem.objects.homepage().order_by("-date")[:5]

    def item_title(self, item):
        return item.headline

    def item_description(self, item):
        return item.blurb

    def item_link(self, item):
        return item.followup_link


class LatestNewsFeedAtom(LatestNewsFeedRSS):
    feed_type = Atom1Feed
    subtitle = LatestNewsFeedRSS.description

    def author_name(self):
        return "SciPost"

    def item_updateddate(self, item):
        return datetime.datetime(item.date.year, item.date.month, item.date.day)


class LatestSubmissionsFeedRSS(Feed):
    title_template = "feeds/latest_submissions_title.html"
    description_template = "feeds/latest_submissions_description.html"
    link = "/submissions/"

    def get_object(self, request, specialty=None):
        if specialty:
            queryset = (
                Submission.objects.filter(specialties=specialty)
                .filter(visible_public=True)
                .order_by("-submission_date")[:10]
            )
            queryset.specialty = specialty
        else:
            queryset = Submission.objects.filter(visible_public=True).order_by(
                "-submission_date"
            )[:10]
            queryset.specialty = None
        return queryset

    def title(self, obj):
        title_text = "SciPost: Latest Submissions"
        if obj.specialty:
            title_text += " in %s" % obj.specialty.name
        return title_text

    def description(self, obj):
        desc = "SciPost: most recent submissions"
        if obj.specialty:
            desc += " in %s" % obj.specialty.name
        return desc

    def items(self, obj):
        return obj

    def item_link(self, item):
        return reverse(
            "submissions:submission",
            kwargs={"identifier_w_vn_nr": item.preprint.identifier_w_vn_nr},
        )


class LatestSubmissionsFeedAtom(LatestSubmissionsFeedRSS):
    feed_type = Atom1Feed
    subtitle = LatestSubmissionsFeedRSS.description

    def author_name(self):
        return "SciPost"

    def item_updateddate(self, item):
        return datetime.datetime(
            item.submission_date.year,
            item.submission_date.month,
            item.submission_date.day,
        )


class LatestPublicationsFeedRSS(Feed):
    title_template = "feeds/latest_publications_title.html"
    description_template = "feeds/latest_publications_description.html"
    link = "/journals/"

    def get_object(self, request, specialty=None):
        qs = Publication.objects.published()
        if specialty:
            qs = qs.filter(specialties=specialty)
        self.specialty = specialty
        return qs.order_by("-publication_date")[:10]

    def title(self, obj):
        title_text = "SciPost: Latest Publications"
        if self.specialty:
            title_text += " in %s" % self.specialty.name
        return title_text

    def description(self, obj):
        desc = "SciPost: most recent publications"
        if self.specialty:
            desc += " in %s" % self.specialty.name
        return desc

    def items(self, obj):
        return obj

    def item_link(self, item):
        return item.get_absolute_url()


class LatestPublicationsFeedAtom(LatestPublicationsFeedRSS):
    feed_type = Atom1Feed
    subtitle = LatestPublicationsFeedRSS.description

    def author_name(self):
        return "SciPost"

    def item_updateddate(self, item):
        return datetime.datetime(
            item.publication_date.year,
            item.publication_date.month,
            item.publication_date.day,
        )


class DjangoJobOpeningsFeedRSS(Feed):
    title = "SciPost: Dev Jobs"
    link = "/careers/django/"
    description = "SciPost: Django dev job openings"

    def items(self):
        return JobOpening.objects.publicly_visible().filter(
            description__icontains="django"
        )

    def item_title(self, item):
        return item.title

    def item_description(self, item):
        return item.short_description

    def item_link(self, item):
        return item.get_absolute_url()