# -*- 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.
+
+from datetime import datetime
from django.shortcuts import get_object_or_404
from django.contrib.auth.decorators import login_required, user_passes_test
+from django.utils import simplejson as json
from piston.handler import BaseHandler
from piston.utils import rc, validate
+
+from api.models import Deleted
+from api.helpers import timestamp
from catalogue.models import Book, Tag
from catalogue.forms import BookImportForm
from catalogue.views import tagged_object_list
-
+"""
class TagHandler(BaseHandler):
allowed_methods = ('GET',)
model = Tag
return get_object_or_404(Book, slug=slug)
else:
return Book.objects.all()
+"""
+
+
+class WLHandler(BaseHandler):
+
+ @staticmethod
+ def fields(request, name):
+ fields_str = request.GET.get(name) if request is not None else None
+ return fields_str.split(',') if fields_str is not None else None
+
+ @staticmethod
+ def book_dict(book, fields=None, extra_fields=None):
+ obj = {}
+ for field in ('slug', 'title', 'description',
+ 'extra_info', 'gazeta_link', 'wiki_link'):
+ if getattr(book, field):
+ obj[field] = getattr(book, field)
+ for field in ('created_at', 'changed_at'):
+ obj[field] = timestamp(getattr(book, field))
+ for field in ('xml', 'epub', 'txt', 'pdf', 'html'):
+ f = getattr(book, field+'_file')
+ if f:
+ obj[field] = f.url
+ for media in book.medias.all():
+ obj.setdefault(media.type, []).append(media.file.url)
+ if book.parent:
+ obj['parent'] = book.parent.id
+ obj['parent_number'] = book.parent_number
+ if fields is not None:
+ for key in obj.keys():
+ if key not in fields:
+ del obj[key]
+
+ # if there's still extra_info, we can parse it
+ if 'extra_info' in obj:
+ extra = json.loads(obj['extra_info'])
+ if extra_fields is not None:
+ for key in extra.keys():
+ if key not in extra_fields:
+ del extra[key]
+ obj['extra_info'] = extra
+
+ obj['id'] = book.id
+ return obj
+
+ @classmethod
+ def book_changes(cls, since=0, request=None):
+ since = datetime.fromtimestamp(float(since))
+ book_fields = cls.fields(request, 'book_fields')
+ extra_fields = cls.fields(request, 'extra_fields')
+
+ added = []
+ changed = []
+ deleted = []
+
+ last_change = since
+ for book in Book.objects.filter(changed_at__gt=since):
+ if book.changed_at > last_change:
+ last_change = book.changed_at
+ book_d = cls.book_dict(book, book_fields, extra_fields)
+ if book.created_at > since:
+ added.append(book_d)
+ else:
+ changed.append(book_d)
+
+ for book in Deleted.objects.filter(type='Book', deleted_at__gt=since, created_at__lte=since):
+ if book.deleted_at > last_change:
+ last_change = book.deleted_at
+ deleted.append(book.id)
+ return {'added': added, 'changed': changed, 'deleted': deleted, 'last_change': timestamp(last_change)}
+
+ @staticmethod
+ def tag_dict(tag, fields=None):
+ obj = {}
+ for field in ('name', 'slug', 'sort_key', 'category', 'description', 'main_page', #'created_at', 'changed_at',
+ 'gazeta_link', 'wiki_link'):
+ if getattr(tag, field):
+ obj[field] = getattr(tag, field)
+ if fields is not None:
+ for key in obj.keys():
+ if key not in fields:
+ del obj[key]
+ obj['id'] = tag.id
+ return obj
+
+ @classmethod
+ def tag_changes(cls, since=0, request=None):
+ since = datetime.fromtimestamp(float(since))
+ tag_fields = cls.fields(request, 'tag_fields')
+
+ added = []
+ changed = []
+ deleted = []
+
+ last_change = since
+ for tag in Tag.objects.filter(changed_at__gt=since):
+ if tag.changed_at > last_change:
+ last_change = tag.changed_at
+ tag_d = cls.tag_dict(tag, tag_fields)
+ if tag.created_at > since:
+ added.append(tag_d)
+ else:
+ changed.append(tag_d)
+
+ for tag in Deleted.objects.filter(type='Tag', deleted_at__gt=since, created_at__lte=since):
+ if tag.deleted_at > last_change:
+ last_change = tag.deleted_at
+ deleted.append(tag.id)
+ return {'added': added, 'changed': changed, 'deleted': deleted, 'last_change': timestamp(last_change)}
+
+
+class BookChangesHandler(WLHandler):
+ allowed_methods = ('GET',)
+
+ def read(self, request, since):
+ return self.book_changes(since, request)
+
+
+class TagChangesHandler(WLHandler):
+ allowed_methods = ('GET',)
+
+ def read(self, request, since):
+ return self.tag_changes(since, request)
+
+
+class ChangesHandler(WLHandler):
+ allowed_methods = ('GET',)
+
+ def read(self, request, since):
+ changes = {
+ 'books': self.book_changes(since, request),
+ 'tags': self.tag_changes(since, request),
+ }
+
+ last_change = 0
+ changes_rev = {}
+ for model in changes:
+ for field in changes[model]:
+ if field == 'last_change':
+ if changes[model][field] > last_change:
+ last_change = changes[model][field]
+ else:
+ changes_rev.setdefault(field, {})[model] = changes[model][field]
+ changes_rev['last_change'] = last_change
+ return changes_rev
+
+
# old
"""
fnp / wolnelektury.git / blobdiff