src/catalogue/management/commands/prune_audience.py

   1 # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 import sys
   5 from django.contrib.auth.models import User
   6 from lxml import etree
   7
   8 from django.core.management import BaseCommand
   9
  10 from catalogue.models import Book
  11 from librarian import DCNS
  12
  13
  14 class Command(BaseCommand):
  15     args = 'exclude_file'
  16
  17     def add_arguments(self, parser):
  18         parser.add_argument(
  19             '-u', '--username', dest='username', metavar='USER',
  20             help='Assign commits to this user (required, preferably yourself).')
  21
  22     def handle(self, exclude_file, **options):
  23         username = options.get('username')
  24
  25         if username:
  26             user = User.objects.get(username=username)
  27         else:
  28             print('Please provide a username.')
  29             sys.exit(1)
  30
  31         excluded_slugs = [line.strip() for line in open(exclude_file, 'rb') if line.strip()]
  32         books = Book.objects.exclude(slug__in=excluded_slugs)
  33
  34         for book in books:
  35             if not book.is_published():
  36                 continue
  37             print('processing %s' % book.slug)
  38             chunk = book.chunk_set.first()
  39             old_head = chunk.head
  40             src = old_head.materialize()
  41             tree = etree.fromstring(src)
  42             audience_nodes = tree.findall('.//' + DCNS("audience"))
  43             if not audience_nodes:
  44                 print('%s has no audience, skipping' % book.slug)
  45                 continue
  46
  47             for node in audience_nodes:
  48                 node.getparent().remove(node)
  49
  50             chunk.commit(
  51                 etree.tostring(tree, encoding='unicode'),
  52                 author=user,
  53                 description='automatyczne skasowanie audience',
  54                 publishable=old_head.publishable
  55             )
  56             print('committed %s' % book.slug)
  57             if not old_head.publishable:
  58                 print('Warning: %s not publishable, last head: %s, %s' % (
  59                     book.slug, old_head.author.username, old_head.description[:40].replace('\n', ' ')))