Thema extension proposal.

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

diff --git a/src/isbn/views.py b/src/isbn/views.py
index 70c101a..acf76c7 100644 (file)
--- a/src/isbn/views.py
+++ b/src/isbn/views.py
@@ -1,4 +1,8 @@
-from django.shortcuts import render
+from django.contrib.auth.decorators import permission_required
+from django.shortcuts import render, get_object_or_404, redirect
+from librarian import DCNS, RDFNS
+from lxml import etree
+from documents.models import Book
 from .models import Isbn, IsbnPool
 
 
@@ -7,3 +11,45 @@ def isbn_list(request):
         'pools': IsbnPool.objects.all(),
         'list': Isbn.objects.all(),
     })
+
+
+MIME = {
+    'html': 'text/html',
+    'pdf': 'application/pdf',
+    'txt': 'text/plain',
+    'epub': 'application/epub+zip',
+    'mobi': 'application/x-mobipocket-ebook',
+}
+
+
+@permission_required('isbn.add_isbn')
+def generate(request, document_id):
+    document = get_object_or_404(Book, id=document_id)
+    book = document.catalogue_book
+    chunk = document[0]
+    head = chunk.head
+    orig_xml = head.materialize()
+    tree = etree.fromstring(orig_xml)
+    rdfdesc = tree.find('.//' + RDFNS('Description'))
+
+    for form, value in Isbn.formats_from_document(document):
+        if value: continue
+        isbn = Isbn.get_for_book(book, form)
+
+        etree.SubElement(rdfdesc, DCNS('relation.hasFormat'), id="mobi").text = f"https://wolnelektury.pl/media/book/{form}mobi/{book.slug}.{form}"
+        etree.SubElement(
+            rdfdesc, 'meta', refines=f'#{form}', id=f'{form}-id', property='dcterms:identifier'
+        ).text = 'ISBN-' + isbn.get_code(True)
+        etree.SubElement(rdfdesc, 'meta', refines=f'#{form}-id', property='identifier-type').text = 'ISBN'
+        etree.SubElement(rdfdesc, 'meta', refines=f'#{form}', property='dcterms:format').text = MIME[form]
+
+    xml = etree.tostring(tree, encoding='unicode')
+    chunk.commit(
+        text=xml,
+        author=request.user,
+        parent=head,
+        description='Auto ISBN',
+        publishable=head.publishable
+    )
+
+    return redirect(document.get_absolute_url())