Basically usable funding workflow.
[wolnelektury.git] / 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}