Reject interrupted requests.

[redakcja.git] / src / cover / views.py

diff --git a/src/cover/views.py b/src/cover/views.py
index 660909d..39b12f9 100644 (file)
--- a/src/cover/views.py
+++ b/src/cover/views.py
@@ -1,15 +1,20 @@
 # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
+from hashlib import sha1
+from os import makedirs
 import os.path
+import PIL.Image
 from django.conf import settings
 from django.contrib.auth.decorators import permission_required
-from django.http import HttpResponse, HttpResponseRedirect, Http404
+from django.http import HttpResponse, HttpResponseRedirect, Http404, JsonResponse
 from django.shortcuts import get_object_or_404, render
 from django.views.decorators.csrf import csrf_exempt
 from django.views.decorators.http import require_POST
 from lxml import etree
 from librarian import RDFNS, DCNS
+from librarian.cover import make_cover
+from librarian.dcparser import BookInfo
 from documents.helpers import active_tab
 from documents.models import Book, Chunk
 from cover.models import Image
@@ -17,7 +22,7 @@ from cover import forms
 from cover.utils import get_import_data
 
 
-PREVIEW_SIZE = (216, 300)
+PREVIEW_SIZE = (212, 300)
 
 
 def preview(request, book, chunk=None, rev=None):
@@ -26,11 +31,14 @@ def preview(request, book, chunk=None, rev=None):
     If chunk and rev number are given, use version from given revision.
     If rev is not given, use publishable version.
     """
-    from PIL import Image
-    from librarian.cover import make_cover
-    from librarian.dcparser import BookInfo
+    try:
+        chunk = Chunk.get(book, chunk)
+    except Chunk.DoesNotExist:
+        raise Http404
+
+    if chunk.book.cover and rev is None and not request.GET.get('width') and not request.GET.get('height'):
+        return HttpResponseRedirect(chunk.book.cover.url)
 
-    chunk = Chunk.get(book, chunk)
     if rev is not None:
         try:
             revision = chunk.at_revision(rev)
@@ -44,7 +52,8 @@ def preview(request, book, chunk=None, rev=None):
 
     try:
         info = BookInfo.from_bytes(xml)
-    except:
+    except Exception as e:
+        print(e)
         return HttpResponseRedirect(os.path.join(settings.STATIC_URL, "img/sample_cover.png"))
     width = request.GET.get('width')
     width = int(width) if width else None
@@ -70,17 +79,11 @@ def preview(request, book, chunk=None, rev=None):
 @csrf_exempt
 @require_POST
 def preview_from_xml(request):
-    from hashlib import sha1
-    from PIL import Image
-    from os import makedirs
-    from lxml import etree
-    from librarian.cover import make_cover
-    from librarian.dcparser import BookInfo
-
     xml = request.POST['xml']
     try:
         info = BookInfo.from_bytes(xml.encode('utf-8'))
-    except:
+    except Exception as e:
+        print(e)
         return HttpResponse(os.path.join(settings.STATIC_URL, "img/sample_cover.png"))
     coverid = sha1(etree.tostring(info.to_etree())).hexdigest()
     cover = make_cover(info)
@@ -91,7 +94,7 @@ def preview_from_xml(request):
     except OSError:
         pass
     fname = os.path.join(cover_dir, "%s.%s" % (coverid, cover.ext()))
-    img = cover.image().resize(PREVIEW_SIZE, Image.ANTIALIAS)
+    img = cover.image().resize(PREVIEW_SIZE, PIL.Image.ANTIALIAS)
     img.save(os.path.join(settings.MEDIA_ROOT, fname))
     return HttpResponse(os.path.join(settings.MEDIA_URL, fname))
 
@@ -100,6 +103,22 @@ def preview_from_xml(request):
 def image(request, pk):
     img = get_object_or_404(Image, pk=pk)
 
+    if not request.accepts('text/html') and request.accepts('application/json') or request.GET.get('format') == 'json':
+        return JsonResponse({
+            'title': img.title,
+            'author': img.author,
+            'license_name': img.license_name,
+            'license_url': img.license_url,
+            'source_url': img.source_url,
+            'attribution': img.attribution,
+            'cut_left': img.cut_left,
+            'cut_right': img.cut_right,
+            'cut_top': img.cut_top,
+            'cut_bottom': img.cut_bottom,
+            'file': img.file.url,
+            'use_file': img.use_file.url,
+        })
+
     if request.user.has_perm('cover.change_image'):
         if request.method == "POST":
             form = forms.ImageEditForm(request.POST, request.FILES, instance=img)
@@ -162,7 +181,7 @@ def quick_import(request, pk):
     if url.startswith('%s://%s/' % (
             request.scheme,
             request.get_host())):
-        cover_id = url.rsplit('/', 1)[-1]
+        cover_id = url.rstrip('/').rsplit('/', 1)[-1]
         cover = Image.objects.get(pk=cover_id)
     else:
         data = get_import_data(url)