api stub

[edumed.git] / api / handlers.py

diff --git a/api/handlers.py b/api/handlers.py
new file mode 100644 (file)
index 0000000..5746b0c
--- /dev/null
+++ b/api/handlers.py
@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+import json
+
+from django.contrib.sites.models import Site
+from django.core.urlresolvers import reverse
+from django.utils.functional import lazy
+from piston.handler import BaseHandler
+from piston.utils import rc
+
+from catalogue.forms import LessonImportForm
+from catalogue.models import Lesson
+
+API_BASE = EDUMED_BASE = MEDIA_BASE = lazy(
+    lambda: u'https://' + Site.objects.get_current().domain, unicode)()
+
+
+class LessonDetails(object):
+    """Custom fields used for representing Lessons."""
+
+    @classmethod
+    def href(cls, lesson):
+        """ Returns an URI for a Lesson in the API. """
+        return API_BASE + reverse("api_lesson", args=[lesson.slug])
+
+    @classmethod
+    def url(cls, lesson):
+        """ Returns Lesson's URL on the site. """
+        return EDUMED_BASE + lesson.get_absolute_url()
+
+
+class LessonDetailHandler(BaseHandler, LessonDetails):
+    """ Main handler for Lesson objects.
+
+    Responsible for single Lesson details.
+    """
+    allowed_methods = ['GET']
+    fields = ['title', 'url']
+
+    def read(self, request, lesson):
+        """ Returns details of a lesson, identified by a slug. """
+        try:
+            return Lesson.objects.get(slug=lesson)
+        except Lesson.DoesNotExist:
+            return rc.NOT_FOUND
+
+
+class LessonsHandler(LessonDetailHandler):
+    allowed_methods = ('GET', 'POST')
+    model = Lesson
+    fields = ['href', 'title', 'url']
+
+    def create(self, request, *args, **kwargs):
+        if not request.user.has_perm('catalogue.add_lesson'):
+            return rc.FORBIDDEN
+
+        data = json.loads(request.POST.get('data'))
+        form = LessonImportForm(data)
+        if form.is_valid():
+            form.save()
+            return rc.CREATED
+        else:
+            return rc.NOT_FOUND