Custom cover support in Librarian.
[wolnelektury.git] / apps / api / handlers.py
index 260384d..b436024 100644 (file)
@@ -12,11 +12,13 @@ from django.core.cache import get_cache
 from django.core.urlresolvers import reverse
 from piston.handler import AnonymousBaseHandler, BaseHandler
 from piston.utils import rc
+from sorl.thumbnail import default
 
 from api.helpers import timestamp
 from api.models import Deleted
 from catalogue.forms import BookImportForm
-from catalogue.models import Book, Tag, BookMedia, Fragment
+from catalogue.models import Book, Tag, BookMedia, Fragment, Collection
+from catalogue.utils import related_tag_name
 from picture.models import Picture
 from picture.forms import PictureImportForm
 
@@ -93,21 +95,17 @@ class BookMediaHandler(BaseHandler):
 
     @classmethod
     def artist(cls, media):
-        return media.get_extra_info_value().get('artist_name', '')
+        return media.extra_info.get('artist_name', '')
 
     @classmethod
     def director(cls, media):
-        return media.get_extra_info_value().get('director_name', '')
+        return media.extra_info.get('director_name', '')
         
 
 
 class BookDetails(object):
     """Custom fields used for representing Books."""
 
-    @classmethod
-    def author(cls, book):
-        return ",".join(t[0] for t in book.related_info()['tags']['author'])
-
     @classmethod
     def href(cls, book):
         """ Returns an URI for a Book in the API. """
@@ -134,6 +132,11 @@ class BookDetails(object):
     def cover(cls, book):
         return MEDIA_BASE + book.cover.url if book.cover else ''
 
+    @classmethod
+    def cover_thumb(cls, book):
+        return MEDIA_BASE + default.backend.get_thumbnail(
+                    book.cover, "139x193").url if book.cover else ''
+
 
 
 class BookDetailHandler(BaseHandler, BookDetails):
@@ -143,7 +146,7 @@ class BookDetailHandler(BaseHandler, BookDetails):
     """
     allowed_methods = ['GET']
     fields = ['title', 'parent', 'children'] + Book.formats + [
-        'media', 'url', 'cover'] + [
+        'media', 'url', 'cover', 'cover_thumb'] + [
             category_plural[c] for c in book_tag_categories]
 
     @piwik_track
@@ -162,7 +165,12 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
     """
     allowed_methods = ('GET',)
     model = Book
-    fields = ['author', 'href', 'title', 'url', 'cover']
+    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb']
+
+    @classmethod
+    def genres(cls, book):
+        """ Returns all media for a book. """
+        return book.tags.filter(category='genre')
 
     @piwik_track
     def read(self, request, tags, top_level=False,
@@ -192,9 +200,9 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
         if top_level:
             books = books.filter(parent=None)
         if audiobooks:
-            books = books.filter(media__type='mp3')
+            books = books.filter(media__type='mp3').distinct()
         if daisy:
-            books = books.filter(media__type='daisy')
+            books = books.filter(media__type='daisy').distinct()
 
         if books.exists():
             return books
@@ -208,7 +216,7 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
 class BooksHandler(BookDetailHandler):
     allowed_methods = ('GET', 'POST')
     model = Book
-    fields = ['author', 'href', 'title', 'url']
+    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb']
     anonymous = AnonymousBooksHandler
 
     def create(self, request, *args, **kwargs):
@@ -224,14 +232,24 @@ class BooksHandler(BookDetailHandler):
             return rc.NOT_FOUND
 
 
+class EBooksHandler(AnonymousBooksHandler):
+    fields = ('author', 'href', 'title', 'cover') + tuple(Book.ebook_formats)
+
+
 # add categorized tags fields for Book
 def _tags_getter(category):
     @classmethod
     def get_tags(cls, book):
         return book.tags.filter(category=category)
     return get_tags
+def _tag_getter(category):
+    @classmethod
+    def get_tag(cls, book):
+        return ", ".join(related_tag_name(t) for t in book.related_info()['tags'].get(category, []))
+    return get_tag
 for plural, singular in category_singular.items():
     setattr(BookDetails, plural, _tags_getter(singular))
+    setattr(BookDetails, singular, _tag_getter(singular))
 
 # add fields for files in Book
 def _file_getter(format):
@@ -248,6 +266,52 @@ for format in Book.formats:
     setattr(BookDetails, format, _file_getter(format))
 
 
+class CollectionDetails(object):
+    """Custom Collection fields."""
+
+    @classmethod
+    def href(cls, collection):
+        """ Returns URI in the API for the collection. """
+
+        return API_BASE + reverse("api_collection", args=[collection.slug])
+
+    @classmethod
+    def url(cls, collection):
+        """ Returns URL on the site. """
+
+        return WL_BASE + collection.get_absolute_url()
+
+    @classmethod
+    def books(cls, collection):
+        return Book.objects.filter(collection.get_query())
+
+
+
+class CollectionDetailHandler(BaseHandler, CollectionDetails):
+    allowed_methods = ('GET',)
+    fields = ['url', 'title', 'description', 'books']
+
+    @piwik_track
+    def read(self, request, slug):
+        print slug
+        """ Returns details of a collection, identified by slug. """
+        try:
+            return Collection.objects.get(slug=slug)
+        except Collection.DoesNotExist:
+            return rc.NOT_FOUND
+
+
+class CollectionsHandler(BaseHandler, CollectionDetails):
+    allowed_methods = ('GET',)
+    model = Collection
+    fields = ['url', 'href', 'title']
+
+    @piwik_track
+    def read(self, request):
+        """ Returns all collections. """
+        return Collection.objects.all()
+
+
 class TagDetails(object):
     """Custom Tag fields."""
 
@@ -410,7 +474,7 @@ class CatalogueHandler(BaseHandler):
     def book_dict(book, fields=None):
         all_fields = ['url', 'title', 'description',
                       'gazeta_link', 'wiki_link',
-                      ] + Book.formats + BookMedia.formats + [
+                      ] + Book.formats + BookMedia.formats.keys() + [
                       'parent', 'parent_number',
                       'tags',
                       'license', 'license_description', 'source_name',
@@ -422,7 +486,7 @@ class CatalogueHandler(BaseHandler):
         else:
             fields = all_fields
 
-        extra_info = book.get_extra_info_value()
+        extra_info = book.extra_info
 
         obj = {}
         for field in fields:
@@ -437,7 +501,7 @@ class CatalogueHandler(BaseHandler):
 
             elif field in BookMedia.formats:
                 media = []
-                for m in book.media.filter(type=field):
+                for m in book.media.filter(type=field).iterator():
                     media.append({
                         'url': m.file.url,
                         'size': m.file.size,
@@ -449,10 +513,10 @@ class CatalogueHandler(BaseHandler):
                 obj[field] = book.get_absolute_url()
 
             elif field == 'tags':
-                obj[field] = [t.id for t in book.tags.exclude(category__in=('book', 'set'))]
+                obj[field] = [t.id for t in book.tags.exclude(category__in=('book', 'set')).iterator()]
 
             elif field == 'author':
-                obj[field] = ", ".join(t.name for t in book.tags.filter(category='author'))
+                obj[field] = ", ".join(t.name for t in book.tags.filter(category='author').iterator())
 
             elif field == 'parent':
                 obj[field] = book.parent_id
@@ -489,7 +553,7 @@ class CatalogueHandler(BaseHandler):
 
         last_change = since
         for book in Book.objects.filter(changed_at__gte=since,
-                    changed_at__lt=until):
+                    changed_at__lt=until).iterator():
             book_d = cls.book_dict(book, fields)
             updated.append(book_d)
         if updated:
@@ -498,7 +562,7 @@ class CatalogueHandler(BaseHandler):
         for book in Deleted.objects.filter(content_type=Book, 
                     deleted_at__gte=since,
                     deleted_at__lt=until,
-                    created_at__lt=since):
+                    created_at__lt=since).iterator():
             deleted.append(book.id)
         if deleted:
             changes['deleted'] = deleted
@@ -524,7 +588,7 @@ class CatalogueHandler(BaseHandler):
                 obj[field] = tag.get_absolute_url()
 
             elif field == 'books':
-                obj[field] = [b.id for b in Book.tagged_top_level([tag])]
+                obj[field] = [b.id for b in Book.tagged_top_level([tag]).iterator()]
 
             elif field == 'sort_key':
                 obj[field] = tag.sort_key
@@ -562,7 +626,7 @@ class CatalogueHandler(BaseHandler):
 
         for tag in Tag.objects.filter(category__in=categories, 
                     changed_at__gte=since,
-                    changed_at__lt=until):
+                    changed_at__lt=until).iterator():
             # only serve non-empty tags
             if tag.book_count:
                 tag_d = cls.tag_dict(tag, fields)
@@ -576,7 +640,7 @@ class CatalogueHandler(BaseHandler):
                 content_type=Tag, 
                     deleted_at__gte=since,
                     deleted_at__lt=until,
-                    created_at__lt=since):
+                    created_at__lt=since).iterator():
             deleted.append(tag.id)
         if deleted:
             changes['deleted'] = deleted