fix for null source urls
[redakcja.git] / apps / cover / management / commands / refresh_covers.py
1 # -*- coding: utf-8 -*-
2 #
3 # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
4 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
5 #
6 import urllib2 as urllib
7 from optparse import make_option
8
9 from django.core.files.base import ContentFile
10 from django.core.management import BaseCommand
11
12 from cover.models import Image
13 from cover.utils import get_flickr_data, URLOpener, FlickrError
14
15
16 class Command(BaseCommand):
17     option_list = BaseCommand.option_list + (
18         make_option('--from', dest='from_id', type=int, default=1),
19     )
20
21     def handle(self, *args, **options):
22         from_id = options.get('from_id', 1)
23         for image in Image.objects.filter(id__gte=from_id).exclude(book=None).order_by('id'):
24             print image.id
25             if image.source_url and 'flickr.com' in image.source_url:
26                 try:
27                     flickr_data = get_flickr_data(image.source_url)
28                 except FlickrError as e:
29                     print 'Flickr analysis failed: %s' % e
30                 else:
31                     flickr_url = flickr_data['download_url']
32                     if flickr_url != image.download_url:
33                         same_url = Image.objects.filter(download_url=flickr_url)
34                         if same_url:
35                             print 'Download url already present in image %s' % same_url.get().id
36                             continue
37                     try:
38                         t = URLOpener().open(image.download_url).read()
39                     except urllib.URLError:
40                         print 'Broken download url'
41                     except IOError:
42                         print 'Connection failed'
43                     else:
44                         image.download_url = flickr_data['download_url']
45                         image.file.save(image.file.name, ContentFile(t))
46                         image.save()