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