src/catalogue/forms.py

   1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 from django import forms
   5 from django.utils.translation import ugettext_lazy as _
   6
   7 from catalogue.models import Book
   8 from waiter.models import WaitedFile
   9 from django.core.exceptions import ValidationError
  10 from catalogue.utils import get_customized_pdf_path
  11 from catalogue.tasks import build_custom_pdf
  12
  13
  14 class BookImportForm(forms.Form):
  15     book_xml_file = forms.FileField(required=False)
  16     book_xml = forms.CharField(required=False)
  17     gallery_url = forms.CharField(required=False)
  18     days = forms.IntegerField(required=False)
  19
  20     def clean(self):
  21         from django.core.files.base import ContentFile
  22
  23         if not self.cleaned_data['book_xml_file']:
  24             if self.cleaned_data['book_xml']:
  25                 self.cleaned_data['book_xml_file'] = \
  26                     ContentFile(self.cleaned_data['book_xml'].encode('utf-8'))
  27             else:
  28                 raise forms.ValidationError(_("Please supply an XML."))
  29         return super(BookImportForm, self).clean()
  30
  31     def save(self, **kwargs):
  32         return Book.from_xml_file(self.cleaned_data['book_xml_file'], overwrite=True,
  33                                   remote_gallery_url=self.cleaned_data['gallery_url'],
  34                                   days=self.cleaned_data['days'], **kwargs)
  35
  36
  37 FORMATS = [(f, f.upper()) for f in Book.ebook_formats]
  38
  39
  40 class DownloadFormatsForm(forms.Form):
  41     formats = forms.MultipleChoiceField(required=False, choices=FORMATS, widget=forms.CheckboxSelectMultiple)
  42
  43     def __init__(self, *args, **kwargs):
  44         super(DownloadFormatsForm, self).__init__(*args, **kwargs)
  45
  46
  47 CUSTOMIZATION_FLAGS = (
  48     ('nofootnotes', _("Don't show footnotes")),
  49     ('nothemes', _("Don't disply themes")),
  50     ('nowlfont', _("Don't use our custom font")),
  51     ('nocover', _("Without cover")),
  52     ('notoc', _("Without table of contents")),
  53     )
  54 CUSTOMIZATION_OPTIONS = (
  55     ('leading', _("Leading"), (
  56         ('', _('Normal leading')),
  57         ('onehalfleading', _('One and a half leading')),
  58         ('doubleleading', _('Double leading')),
  59     )),
  60     ('fontsize', _("Font size"), (
  61         ('', _('Default')),
  62         ('13pt', _('Big')),
  63         ('16pt', _('Bigger')),
  64     )),
  65     # ('pagesize', _("Paper size"), (
  66     #     ('a4paper', _('A4')),
  67     #     ('a5paper', _('A5')),
  68     # )),
  69 )
  70
  71
  72 class CustomPDFForm(forms.Form):
  73     def __init__(self, book, *args, **kwargs):
  74         super(CustomPDFForm, self).__init__(*args, **kwargs)
  75         self.book = book
  76         for name, label in CUSTOMIZATION_FLAGS:
  77             self.fields[name] = forms.BooleanField(required=False, label=label)
  78         for name, label, choices in CUSTOMIZATION_OPTIONS:
  79             self.fields[name] = forms.ChoiceField(choices=choices, required=False, label=label)
  80
  81     def clean(self):
  82         self.cleaned_data['cust'] = self.customizations
  83         self.cleaned_data['path'] = get_customized_pdf_path(self.book, self.cleaned_data['cust'])
  84         if not WaitedFile.can_order(self.cleaned_data['path']):
  85             raise ValidationError(_('Queue is full. Please try again later.'))
  86         return self.cleaned_data
  87
  88     @property
  89     def customizations(self):
  90         c = []
  91         for name, label in CUSTOMIZATION_FLAGS:
  92             if self.cleaned_data.get(name):
  93                 c.append(name)
  94         for name, label, choices in CUSTOMIZATION_OPTIONS:
  95             option = self.cleaned_data.get(name)
  96             if option:
  97                 c.append(option)
  98         c.sort()
  99         return c
 100
 101     def save(self, *args, **kwargs):
 102         if not self.cleaned_data['cust'] and self.book.pdf_file:
 103             # Don't build with default options, just redirect to the standard file.
 104             return {"redirect": self.book.pdf_url()}
 105         url = WaitedFile.order(
 106             self.cleaned_data['path'],
 107             lambda p, waiter_id: build_custom_pdf.delay(self.book.id, self.cleaned_data['cust'], p, waiter_id),
 108             self.book.pretty_title()
 109         )
 110         return {"redirect": url}