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[wolnelektury.git] / apps / catalogue / models.py

diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index bb20774..8b65d4b 100644 (file)
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -2,15 +2,15 @@
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #

-from datetime import datetime
+from collections import namedtuple

 
 from django.db import models
 from django.db.models import permalink, Q
 import django.dispatch
 from django.core.cache import cache
 
 from django.db import models
 from django.db.models import permalink, Q
 import django.dispatch
 from django.core.cache import cache

+from django.core.files.storage import DefaultStorage

 from django.utils.translation import ugettext_lazy as _
 from django.contrib.auth.models import User
 from django.utils.translation import ugettext_lazy as _
 from django.contrib.auth.models import User

-from django.core.files import File

 from django.template.loader import render_to_string
 from django.utils.datastructures import SortedDict
 from django.utils.safestring import mark_safe
 from django.template.loader import render_to_string
 from django.utils.datastructures import SortedDict
 from django.utils.safestring import mark_safe


@@ -23,14 +23,13 @@ from django.conf import settings
 from newtagging.models import TagBase, tags_updated
 from newtagging import managers
 from catalogue.fields import JSONField, OverwritingFileField
 from newtagging.models import TagBase, tags_updated
 from newtagging import managers
 from catalogue.fields import JSONField, OverwritingFileField

-from catalogue.utils import ExistingFile, ORMDocProvider, create_zip, remove_zip
+from catalogue.utils import create_zip
+from catalogue.tasks import touch_tag
+from shutil import copy
+from glob import glob
+import re
+from os import path

 
 

-from librarian import dcparser, html, epub, NoDublinCore
-import mutagen
-from mutagen import id3
-from slughifi import slughifi
-from sortify import sortify
-from os import unlink

 
 TAG_CATEGORIES = (
     ('author', _('author')),
 
 TAG_CATEGORIES = (
     ('author', _('author')),


@@ -42,13 +41,6 @@ TAG_CATEGORIES = (
     ('book', _('book')),
 )
 
     ('book', _('book')),
 )
 

-MEDIA_FORMATS = (
-    ('odt', _('ODT file')),
-    ('mp3', _('MP3 file')),
-    ('ogg', _('OGG file')),
-    ('daisy', _('DAISY file')), 
-)
-

 # not quite, but Django wants you to set a timeout
 CACHE_FOREVER = 2419200  # 28 days
 
 # not quite, but Django wants you to set a timeout
 CACHE_FOREVER = 2419200  # 28 days
 


@@ -69,7 +61,6 @@ class Tag(TagBase):
     category = models.CharField(_('category'), max_length=50, blank=False, null=False,
         db_index=True, choices=TAG_CATEGORIES)
     description = models.TextField(_('description'), blank=True)
     category = models.CharField(_('category'), max_length=50, blank=False, null=False,
         db_index=True, choices=TAG_CATEGORIES)
     description = models.TextField(_('description'), blank=True)

-    main_page = models.BooleanField(_('main page'), default=False, db_index=True, help_text=_('Show tag on main page'))

 
     user = models.ForeignKey(User, blank=True, null=True)
     book_count = models.IntegerField(_('book count'), blank=True, null=True)
 
     user = models.ForeignKey(User, blank=True, null=True)
     book_count = models.IntegerField(_('book count'), blank=True, null=True)


@@ -114,25 +105,22 @@ class Tag(TagBase):
     has_description.boolean = True
 
     def get_count(self):
     has_description.boolean = True
 
     def get_count(self):

-        """ returns global book count for book tags, fragment count for themes """
-
-        if self.book_count is None:
-            if self.category == 'book':
-                # never used
-                objects = Book.objects.none()
-            elif self.category == 'theme':
-                objects = Fragment.tagged.with_all((self,))
-            else:
-                objects = Book.tagged.with_all((self,)).order_by()
-                if self.category != 'set':
-                    # eliminate descendants
-                    l_tags = Tag.objects.filter(slug__in=[book.book_tag_slug() for book in objects])
-                    descendants_keys = [book.pk for book in Book.tagged.with_any(l_tags)]
-                    if descendants_keys:
-                        objects = objects.exclude(pk__in=descendants_keys)
-            self.book_count = objects.count()
-            self.save()
-        return self.book_count
+        """Returns global book count for book tags, fragment count for themes."""
+
+        if self.category == 'book':
+            # never used
+            objects = Book.objects.none()
+        elif self.category == 'theme':
+            objects = Fragment.tagged.with_all((self,))
+        else:
+            objects = Book.tagged.with_all((self,)).order_by()
+            if self.category != 'set':
+                # eliminate descendants
+                l_tags = Tag.objects.filter(slug__in=[book.book_tag_slug() for book in objects])
+                descendants_keys = [book.pk for book in Book.tagged.with_any(l_tags)]
+                if descendants_keys:
+                    objects = objects.exclude(pk__in=descendants_keys)
+        return objects.count()

 
     @staticmethod
     def get_tag_list(tags):
 
     @staticmethod
     def get_tag_list(tags):


@@ -176,26 +164,85 @@ class Tag(TagBase):
     def url_chunk(self):
         return '/'.join((Tag.categories_dict[self.category], self.slug))
 
     def url_chunk(self):
         return '/'.join((Tag.categories_dict[self.category], self.slug))
 

+    @staticmethod
+    def tags_from_info(info):
+        from slughifi import slughifi
+        from sortify import sortify
+        meta_tags = []
+        categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch'))
+        for field_name, category in categories:
+            try:
+                tag_names = getattr(info, field_name)
+            except:
+                tag_names = [getattr(info, category)]
+            for tag_name in tag_names:
+                tag_sort_key = tag_name
+                if category == 'author':
+                    tag_sort_key = tag_name.last_name
+                    tag_name = tag_name.readable()
+                tag, created = Tag.objects.get_or_create(slug=slughifi(tag_name), category=category)
+                if created:
+                    tag.name = tag_name
+                    tag.sort_key = sortify(tag_sort_key.lower())
+                    tag.save()
+                meta_tags.append(tag)
+        return meta_tags
+
+
+
+def get_dynamic_path(media, filename, ext=None, maxlen=100):
+    from slughifi import slughifi
+
+    # how to put related book's slug here?
+    if not ext:
+        # BookMedia case
+        ext = media.formats[media.type].ext
+    if media is None or not media.name:
+        name = slughifi(filename.split(".")[0])
+    else:
+        name = slughifi(media.name)
+    return 'book/%s/%s.%s' % (ext, name[:maxlen-len('book/%s/.%s' % (ext, ext))-4], ext)
+

 
 # TODO: why is this hard-coded ?
 def book_upload_path(ext=None, maxlen=100):
 
 # TODO: why is this hard-coded ?
 def book_upload_path(ext=None, maxlen=100):

-    def get_dynamic_path(media, filename, ext=ext):
-        # how to put related book's slug here?
-        if not ext:
-            if media.type == 'daisy':
-                ext = 'daisy.zip'
-            else:
-                ext = media.type
-        if not media.name:
-            name = slughifi(filename.split(".")[0])
-        else:
-            name = slughifi(media.name)
-        return 'book/%s/%s.%s' % (ext, name[:maxlen-len('book/%s/.%s' % (ext, ext))-4], ext)
-    return get_dynamic_path
+    return lambda *args: get_dynamic_path(*args, ext=ext, maxlen=maxlen)
+
+
+def get_customized_pdf_path(book, customizations):
+    """
+    Returns a MEDIA_ROOT relative path for a customized pdf. The name will contain a hash of customization options.
+    """
+    customizations.sort()
+    h = hash(tuple(customizations))
+
+    pdf_name = '%s-custom-%s' % (book.fileid(), h)
+    pdf_file = get_dynamic_path(None, pdf_name, ext='pdf')
+
+    return pdf_file
+
+
+def get_existing_customized_pdf(book):
+    """
+    Returns a list of paths to generated customized pdf of a book
+    """
+    pdf_glob = '%s-custom-' % (book.fileid(),)
+    pdf_glob = get_dynamic_path(None, pdf_glob, ext='pdf')
+    pdf_glob = re.sub(r"[.]([a-z0-9]+)$", "*.\\1", pdf_glob)
+    return glob(path.join(settings.MEDIA_ROOT, pdf_glob))

 
 
 class BookMedia(models.Model):
 
 
 class BookMedia(models.Model):

-    type        = models.CharField(_('type'), choices=MEDIA_FORMATS, max_length="100")
+    FileFormat = namedtuple("FileFormat", "name ext")
+    formats = SortedDict([
+        ('mp3', FileFormat(name='MP3', ext='mp3')),
+        ('ogg', FileFormat(name='Ogg Vorbis', ext='ogg')),
+        ('daisy', FileFormat(name='DAISY', ext='daisy.zip')),
+    ])
+    format_choices = [(k, _('%s file') % t.name)
+            for k, t in formats.items()]
+
+    type        = models.CharField(_('type'), choices=format_choices, max_length="100")

     name        = models.CharField(_('name'), max_length="100")
     file        = OverwritingFileField(_('file'), upload_to=book_upload_path())
     uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)
     name        = models.CharField(_('name'), max_length="100")
     file        = OverwritingFileField(_('file'), upload_to=book_upload_path())
     uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)


@@ -212,6 +259,9 @@ class BookMedia(models.Model):
         verbose_name_plural = _('book media')
 
     def save(self, *args, **kwargs):
         verbose_name_plural = _('book media')
 
     def save(self, *args, **kwargs):

+        from slughifi import slughifi
+        from catalogue.utils import ExistingFile, remove_zip
+

         try:
             old = BookMedia.objects.get(pk=self.pk)
         except BookMedia.DoesNotExist, e:
         try:
             old = BookMedia.objects.get(pk=self.pk)
         except BookMedia.DoesNotExist, e:


@@ -224,7 +274,7 @@ class BookMedia(models.Model):
         super(BookMedia, self).save(*args, **kwargs)
 
         # remove the zip package for book with modified media
         super(BookMedia, self).save(*args, **kwargs)
 
         # remove the zip package for book with modified media

-        remove_zip(self.book.slug)
+        remove_zip(self.book.fileid())

 
         extra_info = self.get_extra_info_value()
         extra_info.update(self.read_meta())
 
         extra_info = self.get_extra_info_value()
         extra_info.update(self.read_meta())


@@ -236,6 +286,8 @@ class BookMedia(models.Model):
         """
             Reads some metadata from the audiobook.
         """
         """
             Reads some metadata from the audiobook.
         """

+        import mutagen
+        from mutagen import id3

 
         artist_name = director_name = project = funded_by = ''
         if self.type == 'mp3':
 
         artist_name = director_name = project = funded_by = ''
         if self.type == 'mp3':


@@ -268,6 +320,8 @@ class BookMedia(models.Model):
         """
             Reads source file SHA1 from audiobok metadata.
         """
         """
             Reads source file SHA1 from audiobok metadata.
         """

+        import mutagen
+        from mutagen import id3

 
         if filetype == 'mp3':
             try:
 
         if filetype == 'mp3':
             try:


@@ -289,7 +343,9 @@ class BookMedia(models.Model):
 class Book(models.Model):
     title         = models.CharField(_('title'), max_length=120)
     sort_key = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False)
 class Book(models.Model):
     title         = models.CharField(_('title'), max_length=120)
     sort_key = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False)

-    slug          = models.SlugField(_('slug'), max_length=120, unique=True, db_index=True)
+    slug          = models.SlugField(_('slug'), max_length=120, db_index=True)
+    language = models.CharField(_('language code'), max_length=3, db_index=True,
+                    default=settings.CATALOGUE_DEFAULT_LANGUAGE)

     description   = models.TextField(_('description'), blank=True)
     created_at    = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
     changed_at    = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
     description   = models.TextField(_('description'), blank=True)
     created_at    = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
     changed_at    = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)


@@ -299,8 +355,11 @@ class Book(models.Model):
     wiki_link     = models.CharField(blank=True, max_length=240)
     # files generated during publication
 
     wiki_link     = models.CharField(blank=True, max_length=240)
     # files generated during publication
 

-    file_types = ['epub', 'html', 'mobi', 'pdf', 'txt', 'xml']
-    
+    cover = models.FileField(_('cover'), upload_to=book_upload_path('png'),
+                null=True, blank=True)
+    ebook_formats = ['pdf', 'epub', 'mobi', 'txt']
+    formats = ebook_formats + ['html', 'xml']
+

     parent        = models.ForeignKey('self', blank=True, null=True, related_name='children')
     objects  = models.Manager()
     tagged   = managers.ModelTaggedItemManager(Tag)
     parent        = models.ForeignKey('self', blank=True, null=True, related_name='children')
     objects  = models.Manager()
     tagged   = managers.ModelTaggedItemManager(Tag)


@@ -309,10 +368,14 @@ class Book(models.Model):
     html_built = django.dispatch.Signal()
     published = django.dispatch.Signal()
 
     html_built = django.dispatch.Signal()
     published = django.dispatch.Signal()
 

+    URLID_RE = r'[a-z0-9-]+(?:/[a-z]{3})?'
+    FILEID_RE = r'[a-z0-9-]+(?:_[a-z]{3})?'
+

     class AlreadyExists(Exception):
         pass
 
     class Meta:
     class AlreadyExists(Exception):
         pass
 
     class Meta:

+        unique_together = [['slug', 'language']]

         ordering = ('sort_key',)
         verbose_name = _('book')
         verbose_name_plural = _('books')
         ordering = ('sort_key',)
         verbose_name = _('book')
         verbose_name_plural = _('books')


@@ -320,7 +383,45 @@ class Book(models.Model):
     def __unicode__(self):
         return self.title
 
     def __unicode__(self):
         return self.title
 

+    def urlid(self, sep='/'):
+        stem = self.slug
+        if self.language != settings.CATALOGUE_DEFAULT_LANGUAGE:
+            stem += sep + self.language
+        return stem
+
+    def fileid(self):
+        return self.urlid('_')
+
+    @staticmethod
+    def split_urlid(urlid, sep='/', default_lang=settings.CATALOGUE_DEFAULT_LANGUAGE):
+        """Splits a URL book id into slug and language code.
+        
+        Returns a dictionary usable i.e. for object lookup, or None.
+
+        >>> Book.split_urlid("a-slug/pol", default_lang="eng")
+        {'slug': 'a-slug', 'language': 'pol'}
+        >>> Book.split_urlid("a-slug", default_lang="eng")
+        {'slug': 'a-slug', 'language': 'eng'}
+        >>> Book.split_urlid("a-slug_pol", "_", default_lang="eng")
+        {'slug': 'a-slug', 'language': 'pol'}
+        >>> Book.split_urlid("a-slug/eng", default_lang="eng")
+
+        """
+        parts = urlid.rsplit(sep, 1)
+        if len(parts) == 2:
+            if parts[1] == default_lang:
+                return None
+            return {'slug': parts[0], 'language': parts[1]}
+        else:
+            return {'slug': urlid, 'language': default_lang}
+
+    @classmethod
+    def split_fileid(cls, fileid):
+        return cls.split_urlid(fileid, '_')
+

     def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
     def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):

+        from sortify import sortify
+

         self.sort_key = sortify(self.title)
 
         ret = super(Book, self).save(force_insert, force_update)
         self.sort_key = sortify(self.title)
 
         ret = super(Book, self).save(force_insert, force_update)


@@ -332,14 +433,18 @@ class Book(models.Model):
 
     @permalink
     def get_absolute_url(self):
 
     @permalink
     def get_absolute_url(self):

-        return ('catalogue.views.book_detail', [self.slug])
+        return ('catalogue.views.book_detail', [self.urlid()])

 
     @property
     def name(self):
         return self.title
 
     def book_tag_slug(self):
 
     @property
     def name(self):
         return self.title
 
     def book_tag_slug(self):

-        return ('l-' + self.slug)[:120]
+        stem = 'l-' + self.slug
+        if self.language != settings.CATALOGUE_DEFAULT_LANGUAGE:
+            return stem[:116] + ' ' + self.language
+        else:
+            return stem[:120]

 
     def book_tag(self):
         slug = self.book_tag_slug()
 
     def book_tag(self):
         slug = self.book_tag_slug()


@@ -351,14 +456,14 @@ class Book(models.Model):
         return book_tag
 
     def has_media(self, type):
         return book_tag
 
     def has_media(self, type):

-        if type in Book.file_types:
+        if type in Book.formats:

             return bool(getattr(self, "%s_file" % type))
         else:
             return self.media.filter(type=type).exists()
 
     def get_media(self, type):
         if self.has_media(type):
             return bool(getattr(self, "%s_file" % type))
         else:
             return self.media.filter(type=type).exists()
 
     def get_media(self, type):
         if self.has_media(type):

-            if type in Book.file_types:
+            if type in Book.formats:

                 return getattr(self, "%s_file" % type)
             else:                                             
                 return self.media.filter(type=type)
                 return getattr(self, "%s_file" % type)
             else:                                             
                 return self.media.filter(type=type)


@@ -401,15 +506,13 @@ class Book(models.Model):
             formats = []
             # files generated during publication
             if self.has_media("html"):
             formats = []
             # files generated during publication
             if self.has_media("html"):

-                formats.append(u'<a href="%s">%s</a>' % (reverse('book_text', kwargs={'slug': self.slug}), _('Read online')))
-            if self.has_media("pdf"):
-                formats.append(u'<a href="%s">PDF</a>' % self.get_media('pdf').url)
-            if self.has_media("mobi"):
-                formats.append(u'<a href="%s">MOBI</a>' % self.get_media('mobi').url)
-            if self.root_ancestor.has_media("epub"):
-                formats.append(u'<a href="%s">EPUB</a>' % self.root_ancestor.get_media('epub').url)
-            if self.has_media("txt"):
-                formats.append(u'<a href="%s">TXT</a>' % self.get_media('txt').url)
+                formats.append(u'<a href="%s">%s</a>' % (reverse('book_text', args=[self.fileid()]), _('Read online')))
+            for ebook_format in self.ebook_formats:
+                if self.has_media(ebook_format):
+                    formats.append(u'<a href="%s">%s</a>' % (
+                        self.get_media(ebook_format).url,
+                        ebook_format.upper()
+                    ))

             # other files
             for m in self.media.order_by('type'):
                 formats.append(u'<a href="%s">%s</a>' % (m.file.url, m.type.upper()))
             # other files
             for m in self.media.order_by('type'):
                 formats.append(u'<a href="%s">%s</a>' % (m.file.url, m.type.upper()))


@@ -423,17 +526,22 @@ class Book(models.Model):
                 cache.set(cache_key, short_html, CACHE_FOREVER)
             return mark_safe(short_html)
 
                 cache.set(cache_key, short_html, CACHE_FOREVER)
             return mark_safe(short_html)
 

-    @property
-    def root_ancestor(self):
-        """ returns the oldest ancestor """
+    def mini_box(self):
+        if self.id:
+            cache_key = "Book.mini_boxs/%d" % (self.id, )
+            short_html = cache.get(cache_key)
+        else:
+            short_html = None
+
+        if short_html is None:
+            authors = self.tags.filter(category='author')

 
 

-        if not hasattr(self, '_root_ancestor'):
-            book = self
-            while book.parent:
-                book = book.parent
-            self._root_ancestor = book
-        return self._root_ancestor
+            short_html = unicode(render_to_string('catalogue/book_mini_box.html',
+                {'book': self, 'authors': authors, 'STATIC_URL': settings.STATIC_URL}))

 
 

+            if self.id:
+                cache.set(cache_key, short_html, CACHE_FOREVER)
+        return mark_safe(short_html)

 
     def has_description(self):
         return len(self.description) > 0
 
     def has_description(self):
         return len(self.description) > 0


@@ -441,11 +549,6 @@ class Book(models.Model):
     has_description.boolean = True
 
     # ugly ugly ugly
     has_description.boolean = True
 
     # ugly ugly ugly

-    def has_odt_file(self):
-        return bool(self.has_media("odt"))
-    has_odt_file.short_description = 'ODT'
-    has_odt_file.boolean = True
-

     def has_mp3_file(self):
         return bool(self.has_media("mp3"))
     has_mp3_file.short_description = 'MP3'
     def has_mp3_file(self):
         return bool(self.has_media("mp3"))
     has_mp3_file.short_description = 'MP3'


@@ -461,104 +564,105 @@ class Book(models.Model):
     has_daisy_file.short_description = 'DAISY'
     has_daisy_file.boolean = True
 
     has_daisy_file.short_description = 'DAISY'
     has_daisy_file.boolean = True
 

-    def build_pdf(self):
-        """ (Re)builds the pdf file.
+    def wldocument(self, parse_dublincore=True):
+        from catalogue.utils import ORMDocProvider
+        from librarian.parser import WLDocument
+
+        return WLDocument.from_file(self.xml_file.path,
+                provider=ORMDocProvider(self),
+                parse_dublincore=parse_dublincore)
+
+    def build_cover(self, book_info=None):
+        """(Re)builds the cover image."""
+        from StringIO import StringIO
+        from django.core.files.base import ContentFile
+        from librarian.cover import WLCover

 
 

+        if book_info is None:
+            book_info = self.wldocument().book_info
+
+        cover = WLCover(book_info).image()
+        imgstr = StringIO()
+        cover.save(imgstr, 'png')
+        self.cover.save(None, ContentFile(imgstr.getvalue()))
+
+    def build_pdf(self, customizations=None, file_name=None):
+        """ (Re)builds the pdf file.
+        customizations - customizations which are passed to LaTeX class file.
+        file_name - save the pdf file under a different name and DO NOT save it in db.

         """
         """

-        from librarian import pdf
-        from tempfile import NamedTemporaryFile
-        import os
+        from os import unlink
+        from django.core.files import File
+        from catalogue.utils import remove_zip

 
 

-        try:
-            pdf_file = NamedTemporaryFile(delete=False)
-            pdf.transform(ORMDocProvider(self),
-                      file_path=str(self.xml_file.path),
-                      output_file=pdf_file,
-                      )
+        pdf = self.wldocument().as_pdf(customizations=customizations)

 
 

-            self.pdf_file.save('%s.pdf' % self.slug, File(open(pdf_file.name)))
-        finally:
-            unlink(pdf_file.name)
+        if file_name is None:
+            # we'd like to be sure not to overwrite changes happening while
+            # (timely) pdf generation is taking place (async celery scenario)
+            current_self = Book.objects.get(id=self.id)
+            current_self.pdf_file.save('%s.pdf' % self.fileid(),
+                    File(open(pdf.get_filename())))
+            self.pdf_file = current_self.pdf_file
+
+            # remove cached downloadables
+            remove_zip(settings.ALL_PDF_ZIP)

 
 

-        # remove zip with all pdf files
-        remove_zip(settings.ALL_PDF_ZIP)
+            for customized_pdf in get_existing_customized_pdf(self):
+                unlink(customized_pdf)
+        else:
+            print "saving %s" % file_name
+            print "to: %s" % DefaultStorage().path(file_name)
+            DefaultStorage().save(file_name, File(open(pdf.get_filename())))

 
     def build_mobi(self):
         """ (Re)builds the MOBI file.
 
         """
 
     def build_mobi(self):
         """ (Re)builds the MOBI file.
 
         """

-        from librarian import mobi
-        from tempfile import NamedTemporaryFile
-        import os
+        from django.core.files import File
+        from catalogue.utils import remove_zip

 
 

-        try:
-            mobi_file = NamedTemporaryFile(suffix='.mobi', delete=False)
-            mobi.transform(ORMDocProvider(self), verbose=1,
-                      file_path=str(self.xml_file.path),
-                      output_file=mobi_file.name,
-                      )
+        mobi = self.wldocument().as_mobi()

 
 

-            self.mobi_file.save('%s.mobi' % self.slug, File(open(mobi_file.name)))
-        finally:
-            unlink(mobi_file.name)
+        self.mobi_file.save('%s.mobi' % self.fileid(), File(open(mobi.get_filename())))

 
         # remove zip with all mobi files
         remove_zip(settings.ALL_MOBI_ZIP)
 
 
         # remove zip with all mobi files
         remove_zip(settings.ALL_MOBI_ZIP)
 

-    def build_epub(self, remove_descendants=True):
-        """ (Re)builds the epub file.
-            If book has a parent, does nothing.
-            Unless remove_descendants is False, descendants' epubs are removed.
-        """
-        from StringIO import StringIO
-        from hashlib import sha1
-        from django.core.files.base import ContentFile
-
-        if self.parent:
-            # don't need an epub
-            return
+    def build_epub(self):
+        """(Re)builds the epub file."""
+        from django.core.files import File
+        from catalogue.utils import remove_zip

 
 

-        epub_file = StringIO()
-        try:
-            epub.transform(ORMDocProvider(self), self.slug, output_file=epub_file)
-            self.epub_file.save('%s.epub' % self.slug, ContentFile(epub_file.getvalue()))
-            FileRecord(slug=self.slug, type='epub', sha1=sha1(epub_file.getvalue()).hexdigest()).save()
-        except NoDublinCore:
-            pass
+        epub = self.wldocument().as_epub()

 
 

-        book_descendants = list(self.children.all())
-        while len(book_descendants) > 0:
-            child_book = book_descendants.pop(0)
-            if remove_descendants and child_book.has_epub_file():
-                child_book.epub_file.delete()
-            # save anyway, to refresh short_html
-            child_book.save()
-            book_descendants += list(child_book.children.all())
+        self.epub_file.save('%s.epub' % self.fileid(),
+                File(open(epub.get_filename())))

 
         # remove zip package with all epub files
         remove_zip(settings.ALL_EPUB_ZIP)
 
     def build_txt(self):
 
         # remove zip package with all epub files
         remove_zip(settings.ALL_EPUB_ZIP)
 
     def build_txt(self):

-        from StringIO import StringIO

         from django.core.files.base import ContentFile
         from django.core.files.base import ContentFile

-        from librarian import text

 
 

-        out = StringIO()
-        text.transform(open(self.xml_file.path), out)
-        self.txt_file.save('%s.txt' % self.slug, ContentFile(out.getvalue()))
+        text = self.wldocument().as_text()
+        self.txt_file.save('%s.txt' % self.fileid(), ContentFile(text.get_string()))

 
 
     def build_html(self):
 
 
     def build_html(self):

-        from tempfile import NamedTemporaryFile

         from markupstring import MarkupString
         from markupstring import MarkupString

+        from django.core.files.base import ContentFile
+        from slughifi import slughifi
+        from librarian import html

 
         meta_tags = list(self.tags.filter(
             category__in=('author', 'epoch', 'genre', 'kind')))
         book_tag = self.book_tag()
 
 
         meta_tags = list(self.tags.filter(
             category__in=('author', 'epoch', 'genre', 'kind')))
         book_tag = self.book_tag()
 

-        html_file = NamedTemporaryFile()
-        if html.transform(self.xml_file.path, html_file, parse_dublincore=False):
-            self.html_file.save('%s.html' % self.slug, File(html_file))
+        html_output = self.wldocument(parse_dublincore=False).as_html()
+        if html_output:
+            self.html_file.save('%s.html' % self.fileid(),
+                    ContentFile(html_output.get_string()))

 
             # get ancestor l-tags for adding to new fragments
             ancestor_tags = []
 
             # get ancestor l-tags for adding to new fragments
             ancestor_tags = []


@@ -608,7 +712,7 @@ class Book(models.Model):
         def pretty_file_name(book):
             return "%s/%s.%s" % (
                 b.get_extra_info_value()['author'],
         def pretty_file_name(book):
             return "%s/%s.%s" % (
                 b.get_extra_info_value()['author'],

-                b.slug,
+                b.fileid(),

                 format_)
 
         field_name = "%s_file" % format_
                 format_)
 
         field_name = "%s_file" % format_


@@ -622,11 +726,14 @@ class Book(models.Model):
     def zip_audiobooks(self):
         bm = BookMedia.objects.filter(book=self, type='mp3')
         paths = map(lambda bm: (None, bm.file.path), bm)
     def zip_audiobooks(self):
         bm = BookMedia.objects.filter(book=self, type='mp3')
         paths = map(lambda bm: (None, bm.file.path), bm)

-        result = create_zip.delay(paths, self.slug)
+        result = create_zip.delay(paths, self.fileid())

         return result.wait()
 
     @classmethod
     def from_xml_file(cls, xml_file, **kwargs):
         return result.wait()
 
     @classmethod
     def from_xml_file(cls, xml_file, **kwargs):

+        from django.core.files import File
+        from librarian import dcparser
+

         # use librarian to parse meta-data
         book_info = dcparser.parse(xml_file)
 
         # use librarian to parse meta-data
         book_info = dcparser.parse(xml_file)
 


@@ -642,29 +749,33 @@ class Book(models.Model):
     def from_text_and_meta(cls, raw_file, book_info, overwrite=False,
             build_epub=True, build_txt=True, build_pdf=True, build_mobi=True):
         import re
     def from_text_and_meta(cls, raw_file, book_info, overwrite=False,
             build_epub=True, build_txt=True, build_pdf=True, build_mobi=True):
         import re

+        from sortify import sortify

 
         # check for parts before we do anything
         children = []
         if hasattr(book_info, 'parts'):
             for part_url in book_info.parts:
 
         # check for parts before we do anything
         children = []
         if hasattr(book_info, 'parts'):
             for part_url in book_info.parts:

-                base, slug = part_url.rsplit('/', 1)

                 try:
                 try:

-                    children.append(Book.objects.get(slug=slug))
+                    children.append(Book.objects.get(
+                        slug=part_url.slug, language=part_url.language))

                 except Book.DoesNotExist, e:
                 except Book.DoesNotExist, e:

-                    raise Book.DoesNotExist(_('Book with slug = "%s" does not exist.') % slug)
+                    raise Book.DoesNotExist(_('Book "%s/%s" does not exist.') %
+                            (part_url.slug, part_url.language))

 
 
         # Read book metadata
 
 
         # Read book metadata

-        book_base, book_slug = book_info.url.rsplit('/', 1)
+        book_slug = book_info.url.slug
+        language = book_info.language

         if re.search(r'[^a-zA-Z0-9-]', book_slug):
             raise ValueError('Invalid characters in slug')
         if re.search(r'[^a-zA-Z0-9-]', book_slug):
             raise ValueError('Invalid characters in slug')

-        book, created = Book.objects.get_or_create(slug=book_slug)
+        book, created = Book.objects.get_or_create(slug=book_slug, language=language)

 
         if created:
             book_shelves = []
         else:
             if not overwrite:
 
         if created:
             book_shelves = []
         else:
             if not overwrite:

-                raise Book.AlreadyExists(_('Book %s already exists') % book_slug)
+                raise Book.AlreadyExists(_('Book %s/%s already exists') % (
+                        book_slug, language))

             # Save shelves for this book
             book_shelves = list(book.tags.filter(category='set'))
 
             # Save shelves for this book
             book_shelves = list(book.tags.filter(category='set'))
 


@@ -672,24 +783,7 @@ class Book(models.Model):
         book.set_extra_info_value(book_info.to_dict())
         book.save()
 
         book.set_extra_info_value(book_info.to_dict())
         book.save()
 

-        meta_tags = []
-        categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch'))
-        for field_name, category in categories:
-            try:
-                tag_names = getattr(book_info, field_name)
-            except:
-                tag_names = [getattr(book_info, category)]
-            for tag_name in tag_names:
-                tag_sort_key = tag_name
-                if category == 'author':
-                    tag_sort_key = tag_name.last_name
-                    tag_name = ' '.join(tag_name.first_names) + ' ' + tag_name.last_name
-                tag, created = Tag.objects.get_or_create(slug=slughifi(tag_name), category=category)
-                if created:
-                    tag.name = tag_name
-                    tag.sort_key = sortify(tag_sort_key.lower())
-                    tag.save()
-                meta_tags.append(tag)
+        meta_tags = Tag.tags_from_info(book_info)

 
         book.tags = set(meta_tags + book_shelves)
 
 
         book.tags = set(meta_tags + book_shelves)
 


@@ -710,26 +804,32 @@ class Book(models.Model):
             if not settings.NO_BUILD_TXT and build_txt:
                 book.build_txt()
 
             if not settings.NO_BUILD_TXT and build_txt:
                 book.build_txt()
 

+        book.build_cover(book_info)
+

         if not settings.NO_BUILD_EPUB and build_epub:
         if not settings.NO_BUILD_EPUB and build_epub:

-            book.root_ancestor.build_epub()
+            book.build_epub()

 
         if not settings.NO_BUILD_PDF and build_pdf:
 
         if not settings.NO_BUILD_PDF and build_pdf:

-            book.root_ancestor.build_pdf()
+            book.build_pdf()

 
         if not settings.NO_BUILD_MOBI and build_mobi:
             book.build_mobi()
 
         book_descendants = list(book.children.all())
 
         if not settings.NO_BUILD_MOBI and build_mobi:
             book.build_mobi()
 
         book_descendants = list(book.children.all())

+        descendants_tags = set()

         # add l-tag to descendants and their fragments
         # add l-tag to descendants and their fragments

-        # delete unnecessary EPUB files

         while len(book_descendants) > 0:
             child_book = book_descendants.pop(0)
         while len(book_descendants) > 0:
             child_book = book_descendants.pop(0)

+            descendants_tags.update(child_book.tags)

             child_book.tags = list(child_book.tags) + [book_tag]
             child_book.save()
             for fragment in child_book.fragments.all():
                 fragment.tags = set(list(fragment.tags) + [book_tag])
             book_descendants += list(child_book.children.all())
 
             child_book.tags = list(child_book.tags) + [book_tag]
             child_book.save()
             for fragment in child_book.fragments.all():
                 fragment.tags = set(list(fragment.tags) + [book_tag])
             book_descendants += list(child_book.children.all())
 

+        for tag in descendants_tags:
+            touch_tag.delay(tag)
+

         book.save()
 
         # refresh cache
         book.save()
 
         # refresh cache


@@ -839,7 +939,8 @@ class Book(models.Model):
         """
 
         books_by_parent = {}
         """
 
         books_by_parent = {}

-        books = cls.objects.all().order_by('parent_number', 'sort_key').only('title', 'parent', 'slug')
+        books = cls.objects.all().order_by('parent_number', 'sort_key').only(
+                'title', 'parent', 'slug', 'language')

         if filter:
             books = books.filter(filter).distinct()
             book_ids = set((book.pk for book in books))
         if filter:
             books = books.filter(filter).distinct()
             book_ids = set((book.pk for book in books))


@@ -867,6 +968,19 @@ class Book(models.Model):
 
         return books_by_author, orphans, books_by_parent
 
 
         return books_by_author, orphans, books_by_parent
 

+    _audiences_pl = {
+        "SP1": (1, u"szkoła podstawowa"),
+        "SP2": (1, u"szkoła podstawowa"),
+        "P": (1, u"szkoła podstawowa"),
+        "G": (2, u"gimnazjum"),
+        "L": (3, u"liceum"),
+        "LP": (3, u"liceum"),
+    }
+    def audiences_pl(self):
+        audiences = self.get_extra_info_value().get('audiences', [])
+        audiences = sorted(set([self._audiences_pl[a] for a in audiences]))
+        return [a[1] for a in audiences]
+

 
 def _has_factory(ftype):
     has = lambda self: bool(getattr(self, "%s_file" % ftype))
 
 def _has_factory(ftype):
     has = lambda self: bool(getattr(self, "%s_file" % ftype))


@@ -877,7 +991,7 @@ def _has_factory(ftype):
 
     
 # add the file fields
 
     
 # add the file fields

-for t in Book.file_types:
+for t in Book.formats:

     field_name = "%s_file" % t
     models.FileField(_("%s file" % t.upper()),
             upload_to=book_upload_path(t),
     field_name = "%s_file" % t
     models.FileField(_("%s file" % t.upper()),
             upload_to=book_upload_path(t),


@@ -902,7 +1016,7 @@ class Fragment(models.Model):
         verbose_name_plural = _('fragments')
 
     def get_absolute_url(self):
         verbose_name_plural = _('fragments')
 
     def get_absolute_url(self):

-        return '%s#m%s' % (reverse('book_text', kwargs={'slug': self.book.slug}), self.anchor)
+        return '%s#m%s' % (self.book.get_html_url(), self.anchor)

 
     def reset_short_html(self):
         if self.id is None:
 
     def reset_short_html(self):
         if self.id is None:


@@ -929,20 +1043,6 @@ class Fragment(models.Model):
             return mark_safe(short_html)
 
 
             return mark_safe(short_html)
 
 

-class FileRecord(models.Model):
-    slug = models.SlugField(_('slug'), max_length=120, db_index=True)
-    type = models.CharField(_('type'), max_length=20, db_index=True)
-    sha1 = models.CharField(_('sha-1 hash'), max_length=40)
-    time = models.DateTimeField(_('time'), auto_now_add=True)
-
-    class Meta:
-        ordering = ('-time','-slug', '-type')
-        verbose_name = _('file record')
-        verbose_name_plural = _('file records')
-
-    def __unicode__(self):
-        return "%s %s.%s" % (self.sha1,  self.slug, self.type)
-

 ###########
 #
 # SIGNALS
 ###########
 #
 # SIGNALS


@@ -953,7 +1053,8 @@ class FileRecord(models.Model):
 def _tags_updated_handler(sender, affected_tags, **kwargs):
     # reset tag global counter
     # we want Tag.changed_at updated for API to know the tag was touched
 def _tags_updated_handler(sender, affected_tags, **kwargs):
     # reset tag global counter
     # we want Tag.changed_at updated for API to know the tag was touched

-    Tag.objects.filter(pk__in=[tag.pk for tag in affected_tags]).update(book_count=None, changed_at=datetime.now())
+    for tag in affected_tags:
+        touch_tag.delay(tag)

 
     # if book tags changed, reset book tag counter
     if isinstance(sender, Book) and \
 
     # if book tags changed, reset book tag counter
     if isinstance(sender, Book) and \