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 gettext_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     hidden = forms.BooleanField(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'],
  36                                   findable=not self.cleaned_data['hidden'],
  37                                   **kwargs)
  38
  39
  40 FORMATS = [(f, f.upper()) for f in Book.ebook_formats]
  41
  42
  43 class DownloadFormatsForm(forms.Form):
  44     formats = forms.MultipleChoiceField(required=False, choices=FORMATS, widget=forms.CheckboxSelectMultiple)
  45
  46     def __init__(self, *args, **kwargs):
  47         super(DownloadFormatsForm, self).__init__(*args, **kwargs)
  48
  49
  50 CUSTOMIZATION_FLAGS = (
  51     ('nofootnotes', _("Don't show footnotes")),
  52     ('nothemes', _("Don't disply themes")),
  53     ('nowlfont', _("Don't use our custom font")),
  54     ('nocover', _("Without cover")),
  55     ('notoc', _("Without table of contents")),
  56     )
  57 CUSTOMIZATION_OPTIONS = (
  58     ('leading', _("Leading"), (
  59         ('', _('Normal leading')),
  60         ('onehalfleading', _('One and a half leading')),
  61         ('doubleleading', _('Double leading')),
  62     )),
  63     ('fontsize', _("Font size"), (
  64         ('', _('Default')),
  65         ('13pt', _('Big')),
  66         ('16pt', _('Bigger')),
  67     )),
  68     # ('pagesize', _("Paper size"), (
  69     #     ('a4paper', _('A4')),
  70     #     ('a5paper', _('A5')),
  71     # )),
  72 )
  73
  74
  75 class CustomPDFForm(forms.Form):
  76     def __init__(self, book, *args, **kwargs):
  77         super(CustomPDFForm, self).__init__(*args, **kwargs)
  78         self.book = book
  79         for name, label in CUSTOMIZATION_FLAGS:
  80             self.fields[name] = forms.BooleanField(required=False, label=label)
  81         for name, label, choices in CUSTOMIZATION_OPTIONS:
  82             self.fields[name] = forms.ChoiceField(choices=choices, required=False, label=label)
  83
  84     def clean(self):
  85         self.cleaned_data['cust'] = self.customizations
  86         self.cleaned_data['path'] = get_customized_pdf_path(self.book, self.cleaned_data['cust'])
  87         if not WaitedFile.can_order(self.cleaned_data['path']):
  88             raise ValidationError(_('Queue is full. Please try again later.'))
  89         return self.cleaned_data
  90
  91     @property
  92     def customizations(self):
  93         c = []
  94         for name, label in CUSTOMIZATION_FLAGS:
  95             if self.cleaned_data.get(name):
  96                 c.append(name)
  97         for name, label, choices in CUSTOMIZATION_OPTIONS:
  98             option = self.cleaned_data.get(name)
  99             if option:
 100                 c.append(option)
 101         c.sort()
 102         return c
 103
 104     def save(self, *args, **kwargs):
 105         if not self.cleaned_data['cust'] and self.book.pdf_file:
 106             # Don't build with default options, just redirect to the standard file.
 107             return {"redirect": self.book.pdf_url()}
 108         url = WaitedFile.order(
 109             self.cleaned_data['path'],
 110             lambda p, waiter_id: build_custom_pdf.delay(self.book.id, self.cleaned_data['cust'], p, waiter_id),
 111             self.book.pretty_title()
 112         )
 113         return {"redirect": url}