fix
[wolnelektury.git] / src / api / handlers.py
index f3cc4a7..5af5cfb 100644 (file)
@@ -1,36 +1,13 @@
-# -*- coding: utf-8 -*-
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
-import json
-
 from django.contrib.sites.models import Site
-from django.core.urlresolvers import reverse
-from django.db.models import Q
-from django.http.response import HttpResponse
 from django.utils.functional import lazy
-from django.db import models
-from migdal.models import Entry
-from piston.handler import AnonymousBaseHandler, BaseHandler
-from piston.utils import rc
-from sorl.thumbnail import default
-
-from api.models import BookUserData
-from catalogue.forms import BookImportForm
-from catalogue.models import Book, Tag, BookMedia, Fragment, Collection
-from catalogue.models.tag import prefetch_relations
-from paypal.rest import user_is_subscribed
-from picture.models import Picture
-from picture.forms import PictureImportForm
-from social.utils import likes
-
-from stats.utils import piwik_track
-from wolnelektury.utils import re_escape
+from catalogue.models import Book, Tag
 
-from . import emitters  # Register our emitters
 
-API_BASE = WL_BASE = MEDIA_BASE = lazy(
-    lambda: u'https://' + Site.objects.get_current().domain, unicode)()
+WL_BASE = lazy(
+    lambda: 'https://' + Site.objects.get_current().domain, str)()
 
 category_singular = {
     'authors': 'author',
@@ -40,14 +17,6 @@ category_singular = {
     'themes': 'theme',
     'books': 'book',
 }
-category_plural = {}
-for k, v in category_singular.items():
-    category_plural[v] = k
-
-book_tag_categories = ['author', 'epoch', 'kind', 'genre']
-
-book_list_fields = book_tag_categories + [
-    'href', 'title', 'url', 'cover', 'cover_thumb', 'slug', 'simple_thumb', 'has_audio', 'cover_color', 'full_sort_key']
 
 
 def read_tags(tags, request, allowed):
@@ -96,716 +65,3 @@ def read_tags(tags, request, allowed):
                 for slug in request.GET.getlist(key):
                     process(category, slug)
     return real_tags, books
-
-
-# RESTful handlers
-
-
-class BookMediaHandler(BaseHandler):
-    """ Responsible for representing media in Books. """
-
-    model = BookMedia
-    fields = ['name', 'type', 'url', 'artist', 'director']
-
-    @classmethod
-    def url(cls, media):
-        """ Link to media on site. """
-
-        return MEDIA_BASE + media.file.url
-
-    @classmethod
-    def artist(cls, media):
-        return media.extra_info.get('artist_name', '')
-
-    @classmethod
-    def director(cls, media):
-        return media.extra_info.get('director_name', '')
-
-
-class BookDetails(object):
-    """Custom fields used for representing Books."""
-
-    @classmethod
-    def href(cls, book):
-        """ Returns an URI for a Book in the API. """
-        return API_BASE + reverse("catalogue_api_book", args=[book.slug])
-
-    @classmethod
-    def url(cls, book):
-        """ Returns Book's URL on the site. """
-        return WL_BASE + book.get_absolute_url()
-
-    @classmethod
-    def children(cls, book):
-        """ Returns all children for a book. """
-        return book.children.order_by('parent_number', 'sort_key')
-
-    @classmethod
-    def media(cls, book):
-        """ Returns all media for a book. """
-        return book.media.all()
-
-    @classmethod
-    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 ''
-
-    @classmethod
-    def simple_thumb(cls, book):
-        return MEDIA_BASE + book.cover_api_thumb.url if book.cover_api_thumb else ''
-
-    @classmethod
-    def simple_cover(cls, book):
-        return MEDIA_BASE + book.simple_cover.url if book.simple_cover else ''
-
-    @staticmethod
-    def books_after(books, after, new_api):
-        if not new_api:
-            return books.filter(slug__gt=after)
-        try:
-            author, title, book_id = after.split(Book.SORT_KEY_SEP)
-        except ValueError:
-            return Book.objects.none()
-        return books.filter(Q(sort_key_author__gt=author)
-                            | (Q(sort_key_author=author) & Q(sort_key__gt=title))
-                            | (Q(sort_key_author=author) & Q(sort_key=title) & Q(id__gt=int(book_id))))
-
-    @staticmethod
-    def order_books(books, new_api):
-        if new_api:
-            return books.order_by('sort_key_author', 'sort_key', 'id')
-        else:
-            return books.order_by('slug')
-
-
-class BookDetailHandler(BaseHandler, BookDetails):
-    """ Main handler for Book objects.
-
-    Responsible for single Book details.
-    """
-    allowed_methods = ['GET']
-    fields = ['title', 'parent', 'children'] + Book.formats + [
-        'media', 'url', 'cover', 'cover_thumb', 'simple_thumb', 'simple_cover', 'fragment_data', 'audio_length',
-        'preview', 'cover_color'] + [
-            category_plural[c] for c in book_tag_categories]
-
-    @piwik_track
-    def read(self, request, book):
-        """ Returns details of a book, identified by a slug and lang. """
-        try:
-            return Book.objects.get(slug=book)
-        except Book.DoesNotExist:
-            return rc.NOT_FOUND
-
-
-class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
-    """ Main handler for Book objects.
-
-    Responsible for lists of Book objects.
-    """
-    allowed_methods = ('GET',)
-    model = Book
-    fields = book_list_fields
-
-    # FIXME: Unused?
-    @classmethod
-    def genres(cls, book):
-        """ Returns all media for a book. """
-        return book.tags.filter(category='genre')
-
-    @piwik_track
-    def read(self, request, tags=None, top_level=False, audiobooks=False, daisy=False, pk=None,
-             recommended=False, newest=False, books=None,
-             after=None, count=None):
-        """ Lists all books with given tags.
-
-        :param tags: filtering tags; should be a path of categories
-             and slugs, i.e.: authors/an-author/epoch/an-epoch/
-        :param top_level: if True and a book is included in the results,
-             it's children are aren't. By default all books matching the tags
-             are returned.
-        """
-        if pk is not None:
-            # FIXME: Unused?
-            try:
-                return Book.objects.get(pk=pk)
-            except Book.DoesNotExist:
-                return rc.NOT_FOUND
-
-        try:
-            tags, _ancestors = read_tags(tags, request, allowed=book_tag_categories)
-        except ValueError:
-            return rc.NOT_FOUND
-
-        new_api = request.GET.get('new_api')
-        if 'after' in request.GET:
-            after = request.GET['after']
-        if 'count' in request.GET:
-            count = request.GET['count']
-
-        if tags:
-            if top_level:
-                books = Book.tagged_top_level(tags)
-                return books if books else rc.NOT_FOUND
-            else:
-                books = Book.tagged.with_all(tags)
-        else:
-            books = books if books is not None else Book.objects.all()
-        books = self.order_books(books, new_api)
-
-        if top_level:
-            books = books.filter(parent=None)
-        if audiobooks:
-            books = books.filter(media__type='mp3').distinct()
-        if daisy:
-            books = books.filter(media__type='daisy').distinct()
-        if recommended:
-            books = books.filter(recommended=True)
-        if newest:
-            books = books.order_by('-created_at')
-
-        if after:
-            books = self.books_after(books, after, new_api)
-
-        if new_api:
-            books = books.only('slug', 'title', 'cover', 'cover_thumb', 'sort_key', 'sort_key_author')
-        else:
-            books = books.only('slug', 'title', 'cover', 'cover_thumb')
-        for category in book_tag_categories:
-            books = prefetch_relations(books, category)
-
-        if count:
-            books = books[:count]
-
-        return books
-
-    def create(self, request, *args, **kwargs):
-        return rc.FORBIDDEN
-
-
-class BooksHandler(BookDetailHandler):
-    allowed_methods = ('GET', 'POST')
-    model = Book
-    fields = book_list_fields + ['liked']
-    anonymous = AnonymousBooksHandler
-
-    # hack, because piston is stupid
-    @classmethod
-    def liked(cls, book):
-        return getattr(book, 'liked', None)
-
-    def read(self, request, **kwargs):
-        books = AnonymousBooksHandler().read(request, **kwargs)
-        likes = set(Book.tagged.with_any(request.user.tag_set.all()).values_list('id', flat=True))
-
-        new_books = [
-            BookProxy(book).set('liked', book.id in likes)
-            for book in books]
-        return QuerySetProxy(new_books)
-
-    def create(self, request, *args, **kwargs):
-        if not request.user.has_perm('catalogue.add_book'):
-            return rc.FORBIDDEN
-
-        data = json.loads(request.POST.get('data'))
-        form = BookImportForm(data)
-        if form.is_valid():
-            form.save()
-            return rc.CREATED
-        else:
-            return rc.NOT_FOUND
-
-
-class EpubHandler(BookDetailHandler):
-    def read(self, request, slug):
-        if not user_is_subscribed(request.user):
-            return rc.FORBIDDEN
-        try:
-            book = Book.objects.get(slug=slug)
-        except Book.DoesNotExist:
-            return rc.NOT_FOUND
-        response = HttpResponse(book.get_media('epub'))
-        return response
-
-
-class EBooksHandler(AnonymousBooksHandler):
-    fields = ('author', 'href', 'title', 'cover') + tuple(Book.ebook_formats) + ('slug',)
-
-
-class BookProxy(models.Model):
-    class Meta:
-        managed = False
-
-    def __init__(self, book, key=None):
-        self.book = book
-        self.key = key
-
-    def set(self, attr, value):
-        self.__setattr__(attr, value)
-        return self
-
-    def __getattr__(self, item):
-        return self.book.__getattribute__(item)
-
-
-class QuerySetProxy(models.QuerySet):
-    def __init__(self, l):
-        self.list = l
-
-    def __iter__(self):
-        return iter(self.list)
-
-
-class AnonFilterBooksHandler(AnonymousBooksHandler):
-    fields = book_list_fields + ['key']
-
-    def parse_bool(self, s):
-        if s in ('true', 'false'):
-            return s == 'true'
-        else:
-            return None
-
-    def read(self, request):
-        key_sep = '$'
-        search_string = request.GET.get('search')
-        is_lektura = self.parse_bool(request.GET.get('lektura'))
-        is_audiobook = self.parse_bool(request.GET.get('audiobook'))
-        preview = self.parse_bool(request.GET.get('preview'))
-
-        new_api = request.GET.get('new_api')
-        after = request.GET.get('after')
-        count = int(request.GET.get('count', 50))
-        books = self.order_books(Book.objects.distinct(), new_api)
-        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')
-        if preview is not None:
-            books = books.filter(preview=preview)
-        for key in request.GET:
-            if key in category_singular:
-                category = category_singular[key]
-                if category in book_tag_categories:
-                    slugs = request.GET[key].split(',')
-                    tags = Tag.objects.filter(category=category, slug__in=slugs)
-                    books = Book.tagged.with_any(tags, books)
-        if (search_string is not None) and len(search_string) < 3:
-            search_string = None
-        if search_string:
-            search_string = re_escape(search_string)
-            books_author = books.filter(cached_author__iregex='\m' + search_string)
-            books_title = books.filter(title__iregex='\m' + search_string)
-            books_title = books_title.exclude(id__in=list(books_author.values_list('id', flat=True)))
-            if after and (key_sep in after):
-                which, key = after.split(key_sep, 1)
-                if which == 'title':
-                    book_lists = [(self.books_after(books_title, key, new_api), 'title')]
-                else:  # which == 'author'
-                    book_lists = [(self.books_after(books_author, key, new_api), 'author'), (books_title, 'title')]
-            else:
-                book_lists = [(books_author, 'author'), (books_title, 'title')]
-        else:
-            if after and key_sep in after:
-                which, key = after.split(key_sep, 1)
-                books = self.books_after(books, key, new_api)
-            book_lists = [(books, 'book')]
-
-        filtered_books = []
-        for book_list, label in book_lists:
-            book_list = book_list.only('slug', 'title', 'cover', 'cover_thumb', 'sort_key_author', 'sort_key')
-            for category in book_tag_categories:
-                book_list = prefetch_relations(book_list, category)
-            remaining_count = count - len(filtered_books)
-            new_books = [
-                BookProxy(book, '%s%s%s' % (
-                    label, key_sep, book.slug if not new_api else book.full_sort_key()))
-                for book in book_list[:remaining_count]]
-            filtered_books += new_books
-            if len(filtered_books) == count:
-                break
-
-        return QuerySetProxy(filtered_books)
-
-
-class FilterBooksHandler(BooksHandler):
-    anonymous = AnonFilterBooksHandler
-    fields = book_list_fields + ['key', 'liked']
-
-    # hack, because piston is stupid
-    @classmethod
-    def liked(cls, book):
-        return getattr(book, 'liked', None)
-
-    def read(self, request):
-        qsp = AnonFilterBooksHandler().read(request)
-        likes = set(Book.tagged.with_any(request.user.tag_set.all()).values_list('id', flat=True))
-        for book in qsp.list:
-            book.set('liked', book.id in likes)
-        return qsp
-
-
-class BookPreviewHandler(BookDetailHandler):
-    fields = BookDetailHandler.fields + ['slug']
-
-    def read(self, request):
-        return Book.objects.filter(preview=True)
-
-
-# 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 book.tag_unicode(category)
-    return get_tag
-
-
-def add_tag_getters():
-    for plural, singular in category_singular.items():
-        setattr(BookDetails, plural, _tags_getter(singular))
-        setattr(BookDetails, singular, _tag_getter(singular))
-
-
-add_tag_getters()
-
-
-# add fields for files in Book
-def _file_getter(book_format):
-
-    @staticmethod
-    def get_file(book):
-        f_url = book.media_url(book_format)
-        if f_url:
-            return MEDIA_BASE + f_url
-        else:
-            return ''
-    return get_file
-
-
-def add_file_getters():
-    for book_format in Book.formats:
-        setattr(BookDetails, book_format, _file_getter(book_format))
-
-
-add_file_getters()
-
-
-class TagDetails(object):
-    """Custom Tag fields."""
-
-    @classmethod
-    def href(cls, tag):
-        """ Returns URI in the API for the tag. """
-
-        return API_BASE + reverse("api_tag", args=[category_plural[tag.category], tag.slug])
-
-    @classmethod
-    def url(cls, tag):
-        """ Returns URL on the site. """
-
-        return WL_BASE + tag.get_absolute_url()
-
-
-class TagDetailHandler(BaseHandler, TagDetails):
-    """ Responsible for details of a single Tag object. """
-
-    fields = ['name', 'url', 'sort_key', 'description']
-
-    @piwik_track
-    def read(self, request, category, slug):
-        """ Returns details of a tag, identified by category and slug. """
-
-        try:
-            category_sng = category_singular[category]
-        except KeyError:
-            return rc.NOT_FOUND
-
-        try:
-            return Tag.objects.get(category=category_sng, slug=slug)
-        except Tag.DoesNotExist:
-            return rc.NOT_FOUND
-
-
-class TagsHandler(BaseHandler, TagDetails):
-    """ Main handler for Tag objects.
-
-    Responsible for lists of Tag objects
-    and fields used for representing Tags.
-
-    """
-    allowed_methods = ('GET',)
-    model = Tag
-    fields = ['name', 'href', 'url', 'slug']
-
-    @piwik_track
-    def read(self, request, category=None, pk=None):
-        """ Lists all tags in the category (eg. all themes). """
-        if pk is not None:
-            # FIXME: Unused?
-            try:
-                return Tag.objects.exclude(category='set').get(pk=pk)
-            except Book.DoesNotExist:
-                return rc.NOT_FOUND
-
-        try:
-            category_sng = category_singular[category]
-        except KeyError:
-            return rc.NOT_FOUND
-
-        after = request.GET.get('after')
-        count = request.GET.get('count')
-
-        tags = Tag.objects.filter(category=category_sng).exclude(items=None).order_by('slug')
-
-        book_only = request.GET.get('book_only') == 'true'
-        picture_only = request.GET.get('picture_only') == 'true'
-        if book_only:
-            tags = tags.filter(for_books=True)
-        if picture_only:
-            tags = tags.filter(for_pictures=True)
-
-        if after:
-            tags = tags.filter(slug__gt=after)
-
-        if count:
-            tags = tags[:count]
-
-        return tags
-
-
-class FragmentDetails(object):
-    """Custom Fragment fields."""
-
-    @classmethod
-    def href(cls, fragment):
-        """ Returns URI in the API for the fragment. """
-
-        return API_BASE + reverse("api_fragment", args=[fragment.book.slug, fragment.anchor])
-
-    @classmethod
-    def url(cls, fragment):
-        """ Returns URL on the site for the fragment. """
-
-        return WL_BASE + fragment.get_absolute_url()
-
-    @classmethod
-    def themes(cls, fragment):
-        """ Returns a list of theme tags for the fragment. """
-
-        return fragment.tags.filter(category='theme')
-
-
-class FragmentDetailHandler(BaseHandler, FragmentDetails):
-    fields = ['book', 'anchor', 'text', 'url', 'themes']
-
-    @piwik_track
-    def read(self, request, book, anchor):
-        """ Returns details of a fragment, identified by book slug and anchor. """
-        try:
-            return Fragment.objects.get(book__slug=book, anchor=anchor)
-        except Fragment.DoesNotExist:
-            return rc.NOT_FOUND
-
-
-class FragmentsHandler(BaseHandler, FragmentDetails):
-    """ Main handler for Fragments.
-
-    Responsible for lists of Fragment objects
-    and fields used for representing Fragments.
-
-    """
-    model = Fragment
-    fields = ['book', 'url', 'anchor', 'href']
-    allowed_methods = ('GET',)
-
-    categories = {'author', 'epoch', 'kind', 'genre', 'book', 'theme'}
-
-    @piwik_track
-    def read(self, request, tags):
-        """ Lists all fragments with given book, tags, themes.
-
-        :param tags: should be a path of categories and slugs, i.e.:
-             books/book-slug/authors/an-author/themes/a-theme/
-
-        """
-        try:
-            tags, ancestors = read_tags(tags, request, allowed=self.categories)
-        except ValueError:
-            return rc.NOT_FOUND
-        fragments = Fragment.tagged.with_all(tags).select_related('book')
-        if fragments.exists():
-            return fragments
-        else:
-            return rc.NOT_FOUND
-
-
-class PictureHandler(BaseHandler):
-    model = Picture
-    fields = ('slug', 'title')
-    allowed_methods = ('POST',)
-
-    def create(self, request):
-        if not request.user.has_perm('picture.add_picture'):
-            return rc.FORBIDDEN
-
-        data = json.loads(request.POST.get('data'))
-        form = PictureImportForm(data)
-        if form.is_valid():
-            form.save()
-            return rc.CREATED
-        else:
-            return rc.NOT_FOUND
-
-
-class UserDataHandler(BaseHandler):
-    model = BookUserData
-    fields = ('state', 'username', 'premium')
-    allowed_methods = ('GET', 'POST')
-
-    def read(self, request, slug=None):
-        if not request.user.is_authenticated():
-            return rc.FORBIDDEN
-        if slug is None:
-            return {'username': request.user.username, 'premium': user_is_subscribed(request.user)}
-        try:
-            book = Book.objects.get(slug=slug)
-        except Book.DoesNotExist:
-            return rc.NOT_FOUND
-        try:
-            data = BookUserData.objects.get(book=book, user=request.user)
-        except BookUserData.DoesNotExist:
-            return {'state': 'not_started'}
-        return data
-
-    def create(self, request, slug, state):
-        try:
-            book = Book.objects.get(slug=slug)
-        except Book.DoesNotExist:
-            return rc.NOT_FOUND
-        if not request.user.is_authenticated():
-            return rc.FORBIDDEN
-        if state not in ('reading', 'complete'):
-            return rc.NOT_FOUND
-        data, created = BookUserData.objects.get_or_create(book=book, user=request.user)
-        data.state = state
-        data.save()
-        return data
-
-
-class UserShelfHandler(BookDetailHandler):
-    fields = book_list_fields + ['liked']
-
-    # FIXME: Unused?
-    def parse_bool(self, s):
-        if s in ('true', 'false'):
-            return s == 'true'
-        else:
-            return None
-
-    # hack, because piston is stupid
-    @classmethod
-    def liked(cls, book):
-        return getattr(book, 'liked', None)
-
-    def read(self, request, state):
-        if not request.user.is_authenticated():
-            return rc.FORBIDDEN
-        likes = set(Book.tagged.with_any(request.user.tag_set.all()).values_list('id', flat=True))
-        if state not in ('reading', 'complete', 'likes'):
-            return rc.NOT_FOUND
-        new_api = request.GET.get('new_api')
-        after = request.GET.get('after')
-        count = int(request.GET.get('count', 50))
-        if state == 'likes':
-            books = Book.tagged.with_any(request.user.tag_set.all())
-        else:
-            ids = BookUserData.objects.filter(user=request.user, complete=state == 'complete')\
-                .values_list('book_id', flat=True)
-            books = Book.objects.filter(id__in=list(ids)).distinct()
-            books = self.order_books(books, new_api)
-        if after:
-            books = self.books_after(books, after, new_api)
-        if count:
-            books = books[:count]
-        new_books = []
-        for book in books:
-            new_books.append(BookProxy(book).set('liked', book.id in likes))
-        return QuerySetProxy(new_books)
-
-
-class UserLikeHandler(BaseHandler):
-    fields = []
-    allowed_methods = ('GET', 'POST')
-
-    def read(self, request, slug):
-        if not request.user.is_authenticated():
-            return rc.FORBIDDEN
-        try:
-            book = Book.objects.get(slug=slug)
-        except Book.DoesNotExist:
-            return rc.NOT_FOUND
-        return {'likes': likes(request.user, book)}
-
-    def create(self, request, slug):
-        if not request.user.is_authenticated():
-            return rc.FORBIDDEN
-        try:
-            book = Book.objects.get(slug=slug)
-        except Book.DoesNotExist:
-            return rc.NOT_FOUND
-        action = request.GET.get('action', 'like')
-        if action == 'like':
-            book.like(request.user)
-        elif action == 'unlike':
-            book.unlike(request.user)
-        return {}
-
-
-class BlogEntryHandler(BaseHandler):
-    model = Entry
-    fields = (
-        'title', 'lead', 'body', 'place', 'time', 'image_url', 'image_thumb', 'gallery_urls', 'type', 'key', 'url')
-
-    def read(self, request):
-        after = request.GET.get('after')
-        count = int(request.GET.get('count', 20))
-        entries = Entry.published_objects.filter(in_stream=True).order_by('-first_published_at')
-        if after:
-            entries = entries.filter(first_published_at__lt=after)
-        if count:
-            entries = entries[:count]
-        return entries
-
-    @classmethod
-    def image_url(cls, entry):
-        return (WL_BASE + entry.image.url) if entry.image else None
-
-    @classmethod
-    def image_thumb(cls, entry):
-        return MEDIA_BASE + default.backend.get_thumbnail(
-            entry.image, "193x193").url if entry.image else ''
-
-    @classmethod
-    def gallery_urls(cls, entry):
-        return [WL_BASE + photo.url() for photo in entry.photo_set.all()]
-
-    @classmethod
-    def key(cls, entry):
-        return entry.first_published_at
-
-    @classmethod
-    def url(cls, entry):
-        return WL_BASE + entry.get_absolute_url()