apps/catalogue/forms.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from django import forms
   6 from django.utils.translation import ugettext_lazy as _
   7
   8 from catalogue.models import Book
   9 from waiter.models import WaitedFile
  10 from django.core.exceptions import ValidationError
  11 from catalogue.utils import get_customized_pdf_path
  12 from catalogue.tasks import build_custom_pdf
  13
  14
  15 class BookImportForm(forms.Form):
  16     book_xml_file = forms.FileField(required=False)
  17     book_xml = forms.CharField(required=False)
  18
  19     def clean(self):
  20         from django.core.files.base import ContentFile
  21
  22         if not self.cleaned_data['book_xml_file']:
  23             if self.cleaned_data['book_xml']:
  24                 self.cleaned_data['book_xml_file'] = \
  25                         ContentFile(self.cleaned_data['book_xml'].encode('utf-8'))
  26             else:
  27                 raise forms.ValidationError(_("Please supply an XML."))
  28         return super(BookImportForm, self).clean()
  29
  30     def save(self, commit=True, **kwargs):
  31         return Book.from_xml_file(self.cleaned_data['book_xml_file'], overwrite=True, **kwargs)
  32
  33
  34 FORMATS = [(f, f.upper()) for f in Book.ebook_formats]
  35
  36
  37 class DownloadFormatsForm(forms.Form):
  38     formats = forms.MultipleChoiceField(required=False, choices=FORMATS,
  39             widget=forms.CheckboxSelectMultiple)
  40
  41     def __init__(self, *args, **kwargs):
  42         super(DownloadFormatsForm, self).__init__(*args, **kwargs)
  43
  44
  45 CUSTOMIZATION_FLAGS = (
  46     ('nofootnotes', _("Don't show footnotes")),
  47     ('nothemes', _("Don't disply themes")),
  48     ('nowlfont', _("Don't use our custom font")),
  49     ('no-cover', _("Without cover")),
  50     )
  51 CUSTOMIZATION_OPTIONS = (
  52     ('leading', _("Leading"), (
  53         ('', _('Normal leading')),
  54         ('onehalfleading', _('One and a half leading')),
  55         ('doubleleading', _('Double leading')),
  56         )),
  57     ('fontsize', _("Font size"), (
  58         ('', _('Default')),
  59         ('13pt', _('Big'))
  60         )),
  61 #    ('pagesize', _("Paper size"), (
  62 #        ('a4paper', _('A4')),
  63 #        ('a5paper', _('A5')),
  64 #        )),
  65     )
  66
  67
  68 class CustomPDFForm(forms.Form):
  69     def __init__(self, book, *args, **kwargs):
  70         super(CustomPDFForm, self).__init__(*args, **kwargs)
  71         self.book = book
  72         for name, label in CUSTOMIZATION_FLAGS:
  73             self.fields[name] = forms.BooleanField(required=False, label=label)
  74         for name, label, choices in CUSTOMIZATION_OPTIONS:
  75             self.fields[name] = forms.ChoiceField(choices, required=False, label=label)
  76
  77     def clean(self):
  78         self.cleaned_data['cust'] = self.customizations
  79         self.cleaned_data['path'] = get_customized_pdf_path(self.book,
  80             self.cleaned_data['cust'])
  81         if not WaitedFile.can_order(self.cleaned_data['path']):
  82             raise ValidationError(_('Queue is full. Please try again later.'))
  83         return self.cleaned_data
  84
  85     @property
  86     def customizations(self):
  87         c = []
  88         for name, label in CUSTOMIZATION_FLAGS:
  89             if self.cleaned_data.get(name):
  90                 c.append(name)
  91         for name, label, choices in CUSTOMIZATION_OPTIONS:
  92             option = self.cleaned_data.get(name)
  93             if option:
  94                 c.append(option)
  95         c.sort()
  96         return c
  97
  98     def save(self, *args, **kwargs):
  99         if not self.cleaned_data['cust'] and self.book.pdf_file:
 100             # Don't build with default options, just redirect to the standard file.
 101             return {"redirect": self.book.pdf_file.url}
 102         url = WaitedFile.order(self.cleaned_data['path'],
 103             lambda p: build_custom_pdf.delay(self.book.id,
 104                 self.cleaned_data['cust'], p),
 105             self.book.pretty_title()
 106             )
 107         #return redirect(url)
 108         return {"redirect": url}