add to api: filter for app

[wolnelektury.git] / src / api / handlers.py

diff --git a/src/api/handlers.py b/src/api/handlers.py
index b81afda..a869e58 100644 (file)
--- a/src/api/handlers.py
+++ b/src/api/handlers.py
@@ -13,6 +13,7 @@ from sorl.thumbnail import default
 
 from catalogue.forms import BookImportForm
 from catalogue.models import Book, Tag, BookMedia, Fragment, Collection
+from catalogue.models.tag import prefetch_relations
 from picture.models import Picture
 from picture.forms import PictureImportForm
 
@@ -162,7 +163,7 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
     """
     allowed_methods = ('GET',)
     model = Book
-    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb']
+    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb', 'slug']
 
     @classmethod
     def genres(cls, book):
@@ -170,7 +171,9 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
         return book.tags.filter(category='genre')
 
     @piwik_track
-    def read(self, request, tags=None, top_level=False, audiobooks=False, daisy=False, pk=None):
+    def read(self, request, tags=None, top_level=False, audiobooks=False, daisy=False, pk=None,
+             recommended=False, newest=False, books=None,
+             after=None, before=None, count=None):
         """ Lists all books with given tags.
 
         :param tags: filtering tags; should be a path of categories
@@ -197,7 +200,8 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
             else:
                 books = Book.tagged.with_all(tags)
         else:
-            books = Book.objects.all()
+            books = books if books is not None else Book.objects.all()
+        books = books.order_by('slug')
 
         if top_level:
             books = books.filter(parent=None)
@@ -205,8 +209,25 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
             books = books.filter(media__type='mp3').distinct()
         if daisy:
             books = books.filter(media__type='daisy').distinct()
-
-        books = books.only('slug', 'title', 'cover')
+        if recommended:
+            books = books.filter(recommended=True)
+        if newest:
+            books = books.order_by('-created_at')
+
+        if after:
+            books = books.filter(slug__gt=after)
+        if before:
+            books = books.filter(slug__lt=before)
+
+        books = books.only('slug', 'title', 'cover', 'cover_thumb')
+        for category in book_tag_categories:
+            books = prefetch_relations(books, category)
+
+        if count:
+            if before:
+                books = list(reversed(books.order_by('-slug')[:count]))
+            else:
+                books = books[:count]
 
         if books:
             return books
@@ -220,7 +241,7 @@ class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
 class BooksHandler(BookDetailHandler):
     allowed_methods = ('GET', 'POST')
     model = Book
-    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb']
+    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb', 'slug']
     anonymous = AnonymousBooksHandler
 
     def create(self, request, *args, **kwargs):
@@ -237,7 +258,35 @@ class BooksHandler(BookDetailHandler):
 
 
 class EBooksHandler(AnonymousBooksHandler):
-    fields = ('author', 'href', 'title', 'cover') + tuple(Book.ebook_formats)
+    fields = ('author', 'href', 'title', 'cover') + tuple(Book.ebook_formats) + ('slug',)
+
+
+class FilterBooksHandler(AnonymousBooksHandler):
+    fields = book_tag_categories + ['href', 'title', 'url', 'cover', 'cover_thumb', 'slug']
+
+    def read(self, request, title_part=None, author_part=None, is_lektura=None, is_audiobook=None,
+             after=None, before=None, count=None):
+        if count is None:
+            count = 50
+        if is_lektura in ('true', 'false'):
+            is_lektura = is_lektura == 'true'
+        else:
+            is_lektura = None
+        if is_audiobook in ('true', 'false'):
+            is_audiobook = is_audiobook == 'true'
+        books = Book.objects.distinct()
+        if title_part:
+            books = books.filter(title__icontains=title_part)
+        if author_part is not None:
+            books = books.filter(cached_author__icontains=author_part)
+        if is_lektura is not None:
+            books = books.filter(has_audience=is_lektura)
+        if is_audiobook is not None:
+            if is_audiobook:
+                books = books.filter(media__type='mp3')
+            else:
+                books = books.exclude(media__type='mp3')
+        return super(FilterBooksHandler, self).read(request, books=books, after=after, before=before, count=count)
 
 
 # add categorized tags fields for Book
@@ -251,7 +300,7 @@ def _tags_getter(category):
 def _tag_getter(category):
     @classmethod
     def get_tag(cls, book):
-        return ', '.join(book.tags.filter(category=category).values_list('name', flat=True))
+        return book.tag_unicode(category)
     return get_tag