def change_lesson(request):
if not request.is_ajax():
return HttpResponseBadRequest()
room_name = request.GET.get("room_name", None)
try:
r = Room.objects.get(room_name=room_name)
except Room.DoesNotExist:
return ajax_bad_request("Room " + room_name + " not found")
lesson = request.GET.get("lesson", None)
if lesson is None:
return ajax_bad_request("Error: no lesson set")
try:
get_lesson(lesson)
except KeyError:
return ajax_bad_request("Error: unknown lesson")
prev_lessons = get_previous_lessons(r)
prev_lessons.append(r.lesson)
r.previous_lessons = json.dumps(prev_lessons)
r.lesson = lesson
r.save()
students = Student.objects.filter(room=r)
for student in students:
student.current_state = 0
student.is_finished = False
student.is_syncing = False
student.save()
return HttpResponseNoContent()
def control_cmd(request):
if not request.is_ajax():
return HttpResponseBadRequest()
room_name = request.GET.get("room_name", None)
b = request.GET.get("cmd", None)
if b is None:
return ajax_bad_request("Command not found")
try:
r = Room.objects.get(room_name=room_name)
except Room.DoesNotExist:
return ajax_bad_request("Room doesn't exist: " + room_name)
cmd = Cmd(int(b))
if cmd == Cmd.START:
r.state = RoomStates.RUNNING.value
for student in Student.objects.filter(room=r):
student.is_syncing = False
student.is_finished = False
student.save()
elif cmd == Cmd.STOP:
r.state = RoomStates.CLOSED.value
for student in Student.objects.filter(room=r):
student.delete()
elif cmd == Cmd.PAUSE:
r.state = RoomStates.PAUSED.value
else:
return ajax_bad_request("Room command does not exist: " + str(cmd))
r.save()
return HttpResponseNoContent()
def get_results(request, room_name):
if not request.is_ajax():
return HttpResponseBadRequest()
try:
room = Room.objects.get(room_name=room_name)
except Room.DoesNotExist:
return ajax_bad_request("Room doesn't exist")
lesson = request.GET.get("lesson", None)
try:
get_lesson(lesson)
except KeyError:
return ajax_bad_request("Error: unknown lesson")
num_students = Student.objects.filter(room=room).count()
states = get_lesson(lesson).all_states()
state_results = []
for state in states:
r = state.result_svg(room_name)
if r is not None:
completed = LessonStateModel.objects.filter(
room=room, state=state.state_number(),
choice__isnull=False).count()
state_results.append({
'state_name': state.name(),
'completed': completed,
'svg': r
})
return JsonResponse({
'results': state_results,
'no_students': num_students,
'current_lesson': room.lesson,
'prev_lessons': get_previous_lessons(room)
})
def get_sync_state(request):
if not request.is_ajax():
return HttpResponseBadRequest()
room_name = request.GET.get("room_name", None)
try:
r = Room.objects.get(room_name=room_name)
synced = all_synced(r)
finished = all_finished(r)
show_modal = False
if finished and r.state != RoomStates.WAITING.value:
show_modal = True
r.state = RoomStates.WAITING.value
r.save()
elif synced and r.state != RoomStates.PAUSED.value:
show_modal = True
r.state = RoomStates.PAUSED.value
r.save()
return JsonResponse({
"state": r.state,
"finished": finished,
"synced": synced,
"show_modal": show_modal
})
except Room.DoesNotExist:
return ajax_bad_request("Room " + room_name + " not found")
def remove_room(request):
if not request.is_ajax():
return HttpResponseBadRequest()
room_name = request.GET.get("room_name", None)
try:
r = Room.objects.get(room_name=room_name)
r.delete()
return HttpResponseNoContent()
except Room.DoesNotExist:
return ajax_bad_request("Room " + room_name + " not found")
def get_students(request):
if not request.is_ajax():
return HttpResponseBadRequest()
room_name = request.GET.get("room_name", None)
try:
room = Room.objects.get(room_name=room_name)
students = get_students_for_room(room)
finished = all_finished(room)
return JsonResponse({"students": students, 'finished': finished})
except Room.DoesNotExist:
return ajax_bad_request("Room " + room_name + " not found")
def create_test_students(request):
if not request.is_ajax():
return HttpResponseBadRequest
room_name = request.GET.get("room_name", None)
if room_name is None:
return HttpResponseBadRequest
try:
room = Room.objects.get(room_name=room_name)
except Room.DoesNotExist:
return ajax_bad_request("Room" + room_name + " doesn't exist")
for _ in range(0, 10):
Student(user_name=random_word()[:6], session=None, room=room).save()
return HttpResponseNoContent()
def remove_student(request):
if not request.is_ajax():
return HttpResponseBadRequest()
# TODO: Check auth / permission
room_name = request.GET.get("room_name", None)
try:
r = Room.objects.get(room_name=room_name)
except Room.DoesNotExist:
return ajax_bad_request("Room " + room_name + " not found")
student = request.GET.get("student", None)
if not student:
return ajax_bad_request("Error: no such student")
try:
s = Student.objects.get(pk=student, room=r)
s.delete()
except Student.DoesNotExist:
return ajax_bad_request("Error: student not in room")
for l in LessonStateModel.objects.filter(room=r, student=s):
l.delete()
if Student.objects.filter(room=r).count() == 0:
r.state = RoomStates.WAITING.value
r.save()
return JsonResponse({'state': r.state})
def create_room(request):
if not request.is_ajax():
return HttpResponseBadRequest()
if request.method == "POST":
room_name = request.POST.get("room_name", None)
room_name = room_name.strip()
if room_name is None:
return ajax_bad_request("Error: empty room name")
if re.search("[^A-Za-z0-9.-]", room_name):
return ajax_bad_request(
"Error: room name contains unallowed characters")
lesson = request.POST.get("lesson", None)
if lesson is None:
return ajax_bad_request("Error: no lesson set")
try:
get_lesson(lesson)
except KeyError:
return ajax_bad_request("Error: unknown lesson")
try:
Room.objects.get(room_name=room_name)
return ajax_bad_request("Error: room already exist: " + room_name)
except Room.DoesNotExist:
Room.objects.create(room_name=room_name, lesson=lesson)
return HttpResponseNoContent()