accept empty cover in document save form

[redakcja.git] / apps / wiki / forms.py

diff --git a/apps/wiki/forms.py b/apps/wiki/forms.py
index bee0e19..6db1903 100644 (file)
--- a/apps/wiki/forms.py
+++ b/apps/wiki/forms.py
@@ -4,10 +4,11 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django import forms
+from django.core.exceptions import ValidationError
 from django.utils.translation import ugettext_lazy as _
 
-from catalogue.models import Document
 from catalogue.constants import STAGES
+from librarian.document import Document
 
 
 class DocumentTextSaveForm(forms.Form):
@@ -43,7 +44,7 @@ class DocumentTextSaveForm(forms.Form):
     )
 
     stage = forms.ChoiceField(
-        choices = [(s, s) for s in STAGES],
+        choices=[(s, s) for s in STAGES],
         required=False,
         label=_(u"Stage"),
         help_text=_(u"If completed a work stage, change to another one."),
@@ -51,11 +52,36 @@ class DocumentTextSaveForm(forms.Form):
 
     def __init__(self, *args, **kwargs):
         user = kwargs.pop('user')
-        r = super(DocumentTextSaveForm, self).__init__(*args, **kwargs)
+        super(DocumentTextSaveForm, self).__init__(*args, **kwargs)
         if user and user.is_authenticated():
             self.fields['author_name'].required = False
             self.fields['author_email'].required = False
-        return r
+
+    def clean_text(self):
+        text = self.cleaned_data['text']
+        try:
+            doc = Document.from_string(text)
+        except ValueError as e:
+            raise ValidationError(e.message)
+
+        from librarian import SSTNS, DCNS
+        root_elem = doc.edoc.getroot()
+        if len(root_elem) < 1 or root_elem[0].tag != SSTNS('metadata'):
+            raise ValidationError("The first tag in section should be metadata")
+        if len(root_elem) < 2 or root_elem[1].tag != SSTNS('header'):
+            raise ValidationError("The first tag after metadata should be header")
+        header = root_elem[1]
+        if not getattr(header, 'text', None) or not header.text.strip():
+            raise ValidationError(
+                "The first header should contain the title in plain text (no links, emphasis etc.) and cannot be empty")
+
+        cover_url = doc.meta.get_one(DCNS('relation.coverimage.url'))
+        if cover_url:
+            ext = cover_url.rsplit('.', 1)[-1].lower()
+            if ext not in ('jpg', 'jpeg', 'png', 'gif', 'tif', 'tiff'):
+                raise ValidationError('Invalid cover image format, should be an image file (jpg, png, gif). '
+                                      'Change it in Metadata.')
+        return text
 
 
 class DocumentTextRevertForm(forms.Form):