fix buggy media migration:
[wolnelektury.git] / apps / catalogue / management / commands / importbooks.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 import os
6 import sys
7 import time
8 from optparse import make_option
9
10 from django.core.management.base import BaseCommand
11 from django.core.management.color import color_style
12 from django.core.files import File
13
14 from catalogue.models import Book
15
16
17 class Command(BaseCommand):
18     option_list = BaseCommand.option_list + (
19         make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
20             help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'),
21         make_option('-f', '--force', action='store_true', dest='force', default=False,
22             help='Print status messages to stdout'),
23         make_option('-E', '--no-build-epub', action='store_false', dest='build_epub', default=True,
24             help='Don\'t build EPUB file'),
25         make_option('-w', '--wait-until', dest='wait_until', metavar='TIME',
26             help='Wait until specified time (Y-M-D h:m:s)'),
27     )
28     help = 'Imports books from the specified directories.'
29     args = 'directory [directory ...]'
30
31     def handle(self, *directories, **options):
32         from django.db import transaction
33
34         self.style = color_style()
35
36         verbose = options.get('verbose')
37         force = options.get('force')
38         show_traceback = options.get('traceback', False)
39
40         if options.get('wait_until'):
41             wait_until = time.mktime(time.strptime(options.get('wait_until'), '%Y-%m-%d %H:%M:%S'))
42             if verbose > 0:
43                 print "Will wait until %s; it's %f seconds from now" % (
44                     time.strftime('%Y-%m-%d %H:%M:%S', 
45                     time.localtime(wait_until)), wait_until - time.time())
46
47         # Start transaction management.
48         transaction.commit_unless_managed()
49         transaction.enter_transaction_management()
50         transaction.managed(True)
51
52         files_imported = 0
53         files_skipped = 0
54
55         for dir_name in directories:
56             if not os.path.isdir(dir_name):
57                 print self.style.ERROR("%s: Not a directory. Skipping." % dir_name)
58             else:
59                 # files queue
60                 files = sorted(os.listdir(dir_name))
61                 postponed = {}
62                 while files:
63                     file_name = files.pop(0)
64                     file_path = os.path.join(dir_name, file_name)
65                     file_base, ext = os.path.splitext(file_path)
66
67                     # Skip files that are not XML files
68                     if not ext == '.xml':
69                         continue
70
71                     if verbose > 0:
72                         print "Parsing '%s'" % file_path
73                     else:
74                         sys.stdout.write('.')
75                         sys.stdout.flush()
76
77                     # Import book files
78                     try:
79                         book = Book.from_xml_file(file_path, overwrite=force, build_epub=options.get('build_epub'))
80                         files_imported += 1
81
82                         if os.path.isfile(file_base + '.pdf'):
83                             book.pdf_file.save('%s.pdf' % book.slug, File(file(file_base + '.pdf')))
84                             if verbose:
85                                 print "Importing %s.pdf" % file_base
86                         if os.path.isfile(file_base + '.epub'):
87                             book.epub_file.save('%s.epub' % book.slug, File(file(file_base + '.epub')))
88                             if verbose:
89                                 print "Importing %s.epub" % file_base
90                         if os.path.isfile(file_base + '.odt'):
91                             book.odt_file.save('%s.odt' % book.slug, File(file(file_base + '.odt')))
92                             if verbose:
93                                 print "Importing %s.odt" % file_base
94                         if os.path.isfile(file_base + '.txt'):
95                             book.txt_file.save('%s.txt' % book.slug, File(file(file_base + '.txt')))
96                             if verbose:
97                                 print "Importing %s.txt" % file_base
98                         if os.path.isfile(os.path.join(dir_name, book.slug + '.mp3')):
99                             book.mp3_file.save('%s.mp3' % book.slug, File(file(os.path.join(dir_name, book.slug + '.mp3'))))
100                             if verbose:
101                                 print "Importing %s.mp3" % book.slug
102                         if os.path.isfile(os.path.join(dir_name, book.slug + '.ogg')):
103                             book.ogg_file.save('%s.ogg' % book.slug, File(file(os.path.join(dir_name, book.slug + '.ogg'))))
104                             if verbose:
105                                 print "Importing %s.ogg" % book.slug
106                         if os.path.isfile(os.path.join(dir_name, book.slug + '.daisy.zip')):
107                             book.ogg_file.save('%s.daisy.zip' % book.slug, File(file(os.path.join(dir_name, book.slug + '.daisy.zip'))))
108                             if verbose:
109                                 print "Importing %s.daisy.zip" % book.slug
110
111                         book.save()
112
113                     except Book.AlreadyExists, msg:
114                         print self.style.ERROR('%s: Book already imported. Skipping. To overwrite use --force.' %
115                             file_path)
116                         files_skipped += 1
117
118                     except Book.DoesNotExist, e:
119                         if file_name not in postponed or postponed[file_name] < files_imported:
120                             # push it back into the queue, maybe the missing child will show up
121                             if verbose:
122                                 print self.style.NOTICE('Waiting for missing children')
123                             files.append(file_name)
124                             postponed[file_name] = files_imported
125                         else:
126                             # we're in a loop, nothing's being imported - some child is really missing
127                             raise e
128
129         # Print results
130         print
131         print "Results: %d files imported, %d skipped, %d total." % (
132             files_imported, files_skipped, files_imported + files_skipped)
133         print
134
135         if wait_until:
136             print 'Waiting...'
137             try:
138                 time.sleep(wait_until - time.time())
139             except IOError:
140                 print "it's already too late"
141
142         transaction.commit()
143         transaction.leave_transaction_management()
144