Yandex_update

access/serializers.py

@@ -21,13 +21,13 @@ class AccountSerializer(serializers.ModelSerializer):
 class UserSelfSerializer(serializers.ModelSerializer):
     account = serializers.SerializerMethodField()
     groups = serializers.SerializerMethodField()
-    progress = serializers.SerializerMethodField()
+    progresses = serializers.SerializerMethodField()
     diplomas = serializers.SerializerMethodField()
     achievements = serializers.SerializerMethodField()
 
     class Meta:
         model = get_user_model()
-        fields = ('out_key', 'email', 'first_name', 'last_name', 'progress', 'achievements',
+        fields = ('out_key', 'email', 'first_name', 'last_name', 'progresses', 'achievements',
                   'account', 'groups', 'is_staff', 'is_superuser', 'diplomas', 'is_active')
 
     @staticmethod
@@ -47,7 +47,7 @@ class UserSelfSerializer(serializers.ModelSerializer):
         return [group.name for group in self.groups.all()]
 
     @staticmethod
-    def get_progress(self):
+    def get_progresses(self):
         return [SecureProgressSerializer(i).data for i in self.progress_set.all()]
 
 

courses/models.py

@@ -154,19 +154,26 @@ class Course(models.Model):
             lesson_list += list(topic.lesson_set.all())
         return lesson_list
 
-    def get_next(self, lesson: Lesson) -> Lesson:
+    def get_next(self, lesson: Lesson, f=None) -> Lesson:
         lessons = self.get_lesson_list()
         try:
-            return lessons[lessons.index(lesson)]
+            n = lessons[lessons.index(lesson)+1]
+            if f is None or f(lesson):
+                return n
+            else:
+                return self.get_next(lesson, f)
         except IndexError:
             pass
 
-    def get_previous(self, lesson: Lesson):
+    def get_previous(self, lesson: Lesson, f=None):
         lessons = self.get_lesson_list()
-        try:
-            return lessons[lessons.index(lesson) - 2]
-        except IndexError:
-            pass
+        idx = lessons.index(lesson) - 1
+        if idx > -1:
+            prev = lessons[idx]
+            if f is None or f(lesson):
+                return prev
+            else:
+                return self.get_previous(prev, f)
 
     def get_first_lesson(self) -> Lesson:
         lessons = self.get_lesson_list()

courses/serializers.py

@@ -23,11 +23,16 @@ class MiniLessonSerializer(serializers.ModelSerializer):
 
 
 class LessonSerializer(MiniLessonSerializer):
+    course_slug = serializers.SerializerMethodField()
 
     class Meta:
         model = Lesson
         exclude = ('id', 'topic', 'key')
 
+    @staticmethod
+    def get_course_slug(self):
+        return self.topic.course.slug
+
 
 class TeacherLessonSerializer(MiniLessonSerializer):
     topic_sort = serializers.SerializerMethodField()

courses/tasks.py

@@ -0,0 +1,12 @@
+from progress.models import ProgressLesson, Progress
+
+
+def add_lesson(user_out_key: str, course_token: str, lesson_token: str, teacher_key: str, is_hm: bool):
+
+    p = Progress.objects.get(course_token=course_token, user__out_key=user_out_key)
+
+    ProgressLesson.objects.get_or_create(
+        progress=p,
+        lesson_token=lesson_token,
+        checker=user_out_key if is_hm else teacher_key,
+    )

courses/urls.py

@@ -3,8 +3,8 @@ from django.conf.urls import url
 from courses import views as views
 
 urlpatterns = [
-    url(r'vertex/(?P<token>.+)/$', views.LessonDetail.as_view()),
     url(r'lesson/teacher/(?P<token>.+)/$', views.LessonInfoView.as_view()),
+    url(r'lesson/(?P<token>.+)/$', views.LessonDetail.as_view()),
     url(r'tree/(?P<slug>.+)/$', views.TreeView.as_view()),
     url(r'detail/(?P<slug>.+)/$', views.CourseDetailView.as_view()),
     url(r'^$', views.CourseListView.as_view()),

courses/views.py

@@ -1,3 +1,5 @@
+from jwt import DecodeError
+
 from courses.models import Course, Lesson
 from rest_framework.renderers import JSONRenderer
 from rest_framework.response import Response
@@ -5,7 +7,10 @@ from rest_framework.views import APIView
 from django.contrib.auth import get_user_model
 
 from courses.serializers import CourseDetailSerializer, CourseTreeSerializer, LessonSerializer, TeacherLessonSerializer
-from progress.models import ProgressLesson
+import jwt
+
+from courses.tasks import add_lesson
+from lms import settings
 
 
 class TreeView(APIView):
@@ -93,33 +98,51 @@ class LessonDetail(APIView):
     renderer_classes = (JSONRenderer,)
 
     @staticmethod
-    def get(request, token):
+    def post(request, token):
+        jwt_token = request.JSON.get('jwt_token', None)
 
         try:
             lesson = Lesson.objects.get(token=token)
         except Lesson.DoesNotExist:
-            return Response("Lesson doesn't exist", status=404)
-
-        if not lesson.free and not ProgressLesson.objects.filter(lesson_token=lesson.token).exists():
-            previous_lesson = lesson.topic.course.get_previous(lesson)
-
-            if not previous_lesson is None or not ProgressLesson.objects.filter(
-                    lesson_token=previous_lesson.token, status=ProgressLesson.STATUSES.done).exists():
-                return Response("Lesson doesn't access", status=403)
-
-                # TODO: Доделать систему прав на курс
-
-        res = LessonSerializer(lesson).data
-        # progress = vertex.course.progress_set.filter(user=request.user)
-        # try:
-        #     if progress.exists():
-        #         next_vertex = vertex.get_next(progress[0].get_template())
-        #         if next_vertex:
-        #             res['next'] = MiniVertexSerializer(next_vertex).data
-        #         res['is_in_progress'] = vertex in progress[0].get_objects_in_progress()
-        #     else:
-        #         res['next'] = MiniVertexSerializer(vertex.get_next(vertex.course.route)).data
-        # except Thread.DoesNotExist or Vertex.DoesNotExist:
-        #     res['next'] = MiniVertexSerializer(vertex.get_next(vertex.course.route)).data
-
-        return Response(res, status=200)
+            return Response("Урока не существует", status=404)
+
+        l = LessonSerializer(lesson).data
+
+        if not lesson.free:
+            if jwt_token is None:
+                return Response("Ошибка доступа", status=403)
+
+            try:
+                payload = jwt.decode(jwt_token, settings.COURSE_PROGRESS_SECRET_KEY, algorithms=['HS256'])
+            except DecodeError:
+                return Response("Bad token", status=400)
+
+            try:
+                course = Course.objects.get(token=payload['course_token'])
+            except Course.DoesNotExist:
+                return Response("Course not found", status=404)
+
+            prev_lesson = course.get_previous(lesson, (lambda x: not x.is_hm) if payload['only_watch'] else None)
+            next_lesson = course.get_next(lesson, (lambda x: not x.is_hm) if payload['only_watch'] else None)
+
+            if not prev_lesson is None:
+                l['prev_token'] = prev_lesson.token
+
+            if not next_lesson is None:
+                l['next_token'] = next_lesson.token
+
+            new_lesson = False
+            for payload_lesson in payload['lessons']:
+                if payload_lesson['lesson_token'] == str(lesson.token):
+                    return Response(l, status=200)
+                new_lesson = True if prev_lesson is None else \
+                    ((payload_lesson['status'] == "done" or payload_lesson['status'] == "wait")
+                     if prev_lesson.token == payload_lesson['lesson_token'] else False)
+
+            if not new_lesson:
+                return Response("Permission denied", status=403)
+
+            #TODO Задача для селери
+            add_lesson(request.user.out_key, course.token, lesson.token, course.get_teacher(), lesson.is_hm)
+
+        return Response(l, status=200)

progress/serializers.py

@@ -30,7 +30,6 @@ class SecureProgressSerializer(serializers.ModelSerializer):
             'lessons': [ProgressLessonSerializer(i).data for i in self.progresslesson_set.all()],
             'course_token': str(self.course_token),
             'only_watch': self.only_watch,
-            'is_finish': self.is_finish,
         }
         return jwt.encode(payload, settings.COURSE_PROGRESS_SECRET_KEY, algorithm='HS256')