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
  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, widget=forms.CheckboxSelectMultiple)
  39
  40     def __init__(self, *args, **kwargs):
  41         super(DownloadFormatsForm, self).__init__(*args, **kwargs)
  42
  43
  44 CUSTOMIZATION_FLAGS = (
  45     ('nofootnotes', _("Don't show footnotes")),
  46     ('nothemes', _("Don't disply themes")),
  47     ('nowlfont', _("Don't use our custom font")),
  48     ('no-cover', _("Without cover")),
  49     )
  50 CUSTOMIZATION_OPTIONS = (
  51     ('leading', _("Leading"), (
  52         ('', _('Normal leading')),
  53         ('onehalfleading', _('One and a half leading')),
  54         ('doubleleading', _('Double leading')),
  55     )),
  56     ('fontsize', _("Font size"), (
  57         ('', _('Default')),
  58         ('13pt', _('Big'))
  59     )),
  60     # ('pagesize', _("Paper size"), (
  61     #     ('a4paper', _('A4')),
  62     #     ('a5paper', _('A5')),
  63     # )),
  64 )
  65
  66
  67 class CustomPDFForm(forms.Form):
  68     def __init__(self, book, *args, **kwargs):
  69         super(CustomPDFForm, self).__init__(*args, **kwargs)
  70         self.book = book
  71         for name, label in CUSTOMIZATION_FLAGS:
  72             self.fields[name] = forms.BooleanField(required=False, label=label)
  73         for name, label, choices in CUSTOMIZATION_OPTIONS:
  74             self.fields[name] = forms.ChoiceField(choices, required=False, label=label)
  75
  76     def clean(self):
  77         self.cleaned_data['cust'] = self.customizations
  78         self.cleaned_data['path'] = get_customized_pdf_path(self.book, self.cleaned_data['cust'])
  79         if not WaitedFile.can_order(self.cleaned_data['path']):
  80             raise ValidationError(_('Queue is full. Please try again later.'))
  81         return self.cleaned_data
  82
  83     @property
  84     def customizations(self):
  85         c = []
  86         for name, label in CUSTOMIZATION_FLAGS:
  87             if self.cleaned_data.get(name):
  88                 c.append(name)
  89         for name, label, choices in CUSTOMIZATION_OPTIONS:
  90             option = self.cleaned_data.get(name)
  91             if option:
  92                 c.append(option)
  93         c.sort()
  94         return c
  95
  96     def save(self, *args, **kwargs):
  97         if not self.cleaned_data['cust'] and self.book.pdf_file:
  98             # Don't build with default options, just redirect to the standard file.
  99             return {"redirect": self.book.pdf_file.url}
 100         url = WaitedFile.order(
 101             self.cleaned_data['path'],
 102             lambda p, waiter_id: build_custom_pdf.delay(self.book.id, self.cleaned_data['cust'], p, waiter_id),
 103             self.book.pretty_title()
 104         )
 105         return {"redirect": url}