penracourses/rapids/views.py

import json
from django.shortcuts import render, get_object_or_404, redirect
from django import forms

# from django.contrib.auth.models import User
from django.contrib.auth.decorators import login_required, user_passes_test
from django.contrib.auth.models import User
from django.core.exceptions import PermissionDenied

from django.contrib.auth.mixins import LoginRequiredMixin
from django.views.generic.detail import DetailView

from django.views.generic.edit import CreateView, UpdateView, DeleteView
from django.views.generic import ListView
from django.views.decorators.csrf import csrf_exempt

from django.urls import reverse_lazy, reverse

from django.http import Http404, JsonResponse
from django.http import HttpResponseRedirect, HttpResponse

from .forms import (
    ExamAuthorForm,
    RapidForm,
    MarkRapidQuestionForm,
    ImageFormSet,
    RapidQuestionAnswerForm,
    RegionForm,
    AbnormalityForm,
    ExaminationForm,
    AnswerFormSet,
    AnswerUpdateFormSet,
    ExamForm,
)
from .models import (
    Rapid,
    Abnormality,
    RapidImage,
    Region,
    Examination,
    Exam,
    Answer,
    UserAnswer,
)

from generic.views import (
    AuthorRequiredMixin,
    ExamCloneMixin,
    ExamCreateBase,
    ExamDeleteBase,
    ExamUpdateBase,
    ExamViews,
    GenericViewBase,
)

from reversion.views import RevisionMixin

from .tables import RapidTable, RapidUserAnswerTable
from .filters import RapidFilter, RapidUserAnswerFilter

from django_tables2 import SingleTableView, SingleTableMixin
from django_filters.views import FilterView

from .decorators import user_is_author_or_rapid_checker

from collections import defaultdict
import json
import statistics
import plotly.express as px

from django.core.cache import cache

from helpers.images import image_as_base64

import logging
from copy import deepcopy
from django.forms.models import model_to_dict
from rapids.forms import RapidCreationDefaultForm
from rapids.models import RapidCreationDefault


from rest_framework import viewsets, permissions, mixins
from rest_framework.pagination import PageNumberPagination

from .serializers import (
    ExamSerializer,
    QuestionAnswerSerializer,
    RapidLateralitySerializer,
    RapidSerializer,
    UserAnswerSerializer,
)

from generic.mixins import CheckCanEditMixin, SuperuserRequiredMixin

from dal import autocomplete

logger = logging.getLogger(__name__)


def normaliseScore(score):
    if score == 49:
        return 4.5
    elif score in [50, 51]:
        return 5
    elif score in [52, 53]:
        return 5.5
    elif score in [54]:
        return 6
    elif score in [55, 56]:
        return 6.5
    elif score in [57, 58]:
        return 7
    elif score in [59]:
        return 7.5
    elif score in [60]:
        return 8

    return 4


class AuthorOrCheckerRequiredMixin(object):
    def get_object(self, *args, **kwargs):
        obj = super().get_object(*args, **kwargs)
        if self.request.user.groups.filter(name="rapid_checker").exists():
            return obj
        if self.request.user not in obj.author.all():
            raise PermissionDenied()  # or Http404
        return obj


@login_required
def rapid_split(request, pk):
    rapid = get_object_or_404(Rapid, pk=pk)

    if (
        not request.user.groups.filter(name="rapid_checker").exists()
        and request.user not in rapid.author.all()
    ):
        raise PermissionDenied()

    images = rapid.images.all()

    old_abnormality = rapid.abnormality.all()
    old_region = rapid.region.all()
    old_examination = rapid.examination.all()
    # old_site = rapid.site.all()
    old_author = rapid.author.all()

    if not images:
        raise Http404

    for n in range(len(images) - 1):
        rapid.pk = None

        rapid.save()

        rapid.abnormality.set(old_abnormality)
        rapid.region.set(old_region)
        rapid.examination.set(old_examination)
        # rapid.site.set(old_site)
        rapid.author.set(old_author)
        images[n].rapid = rapid
        images[n].save()

    # images[-1].rapid

    # if request.user not in rapid.author.all():
    #    raise PermissionDenied

    # logging.debug(rapid.subspecialty.first().name.all())
    return render(request, "rapids/question_detail.html", {"question": rapid})


class RapidCreationDefaultView(LoginRequiredMixin, UpdateView):
    model = RapidCreationDefault
    form_class = RapidCreationDefaultForm

    #    fields = '__all__'
    #    #fields = [ 'condition' ]
    #    #initial = {'date_of_death': '05/01/2018'}
    #    exclude = [ 'created_date', 'published_date' ]
    # def dispatch(self, request, *args, **kwargs):
    #     """
    #     Overridden so we can make sure the `Rapid` instance exists
    #     before going any further.
    #     """
    #     self.pk = get_object_or_404(Rapid, pk=kwargs['pk'])
    #     return super().dispatch(request, *args, **kwargs)
    def get_object(self, queryset=None):
        obj, create = RapidCreationDefault.objects.get_or_create(
            author=self.request.user
        )

        return obj

    def form_valid(self, form):

        model = form.save(commit=False)

        model.author = self.request.user
        model.save()

        response = super().form_valid(form)

        return response

        # form.instance.author.add(self.request.user.id)


@login_required
def rapid_clone(request, pk):
    new_item = get_object_or_404(Rapid, pk=pk)
    new_item.pk = None  # autogen a new pk (item_id)
    # new_item.name = "Copy of " + new_item.name #need to change uniques

    if (
        request.user not in new_item.get_author_objects()
        and not request.user.is_superuser
    ):
        raise PermissionDenied()  # or Http404

    form = RapidForm(request.POST or None, instance=new_item)

    image_formset = ImageFormSet()
    answer_formset = AnswerFormSet()

    if form.is_valid():
        form.instance.author.add(request.user.id)

        # logger.debug(formset.is_valid())
        if image_formset.is_valid() and answer_formset.is_valid():
            response = super().form_valid(form)
            image_formset.instance = obj
            image_formset.save()

            answer_formset.instance = obj
            answer_formset.save()
            return response
        else:
            return super().form_invalid(form)

    context = {
        "form": form,
        "image_formset": image_formset,
        "answer_formset": answer_formset,
        # other context
    }

    return render(request, "rapids/rapid_form.html", context)


class RapidCreateBase(RevisionMixin, LoginRequiredMixin, CreateView):
    model = Rapid
    form_class = RapidForm

    # Sending user object to the form, to verify which fields to display/remove (depending on group)
    def get_form_kwargs(self):
        kwargs = super(RapidCreateBase, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(RapidCreateBase, self).get_context_data(**kwargs)
        if self.request.POST:
            context["image_formset"] = ImageFormSet(
                self.request.POST, self.request.FILES
            )
            context["image_formset"].full_clean()
            context["answer_formset"] = AnswerFormSet(self.request.POST)
            context["answer_formset"].full_clean()
        else:
            context["image_formset"] = ImageFormSet()
            context["answer_formset"] = AnswerFormSet()
        return context

    def form_valid(self, form):

        self.object = form.save(commit=False)
        self.object.save()

        form.instance.author.add(self.request.user.id)

        context = self.get_context_data(form=form)
        image_formset = context["image_formset"]
        answer_formset = context["answer_formset"]
        if image_formset.is_valid() and answer_formset.is_valid():
            response = super().form_valid(form)
            image_formset.instance = self.object
            image_formset.save()
            answer_formset.instance = self.object
            answer_formset.save()
            # If the normal submit button is pressed we save as normal
            if "submit" in self.request.POST:
                return response
            # else we redirect to the clone url
            else:
                return redirect("rapids:rapid_clone", pk=self.object.pk)

        else:
            return super().form_invalid(form)


# @login_required
class RapidCreate(RapidCreateBase):

    # initial = {"laterality": Rapid.NONE}

    def get_initial(self):
        if "pk" in self.kwargs:
            initial = super().get_initial()
            exam = get_object_or_404(Exam, pk=self.kwargs["pk"])

            initial["exams"] = [exam.id]

            return initial

        ## There has to be a better way...
        # try:
        #    s = (i.pk for i in self.request.user.rapid_default.site.all())
        #    self.initial.update({"site": s})
        # except AttributeError:
        #    pass
        # return self.initial

    #    fields = '__all__'
    #    #fields = [ 'condition' ]
    #    #initial = {'date_of_death': '05/01/2018'}
    #    exclude = [ 'created_date', 'published_date' ]

    # self.object = form.save(commit=False)
    # self.object.save()

    # form.instance.author.add(self.request.user.id)
    # return super().form_valid(form)


class RapidAnswerUpdate(RevisionMixin, AuthorOrCheckerRequiredMixin, UpdateView):
    model = Rapid
    form_class = RapidQuestionAnswerForm
    template_name = "rapids/rapidquestionanswer_form.html"

    def get_context_data(self, **kwargs):
        context = super(RapidAnswerUpdate, self).get_context_data(**kwargs)
        if self.request.POST:
            context["answer_formset"] = AnswerUpdateFormSet(
                self.request.POST, self.request.FILES, instance=self.object
            )
            context["answer_formset"].full_clean()
        else:
            context["answer_formset"] = AnswerUpdateFormSet(instance=self.object)
        context["question"] = context["object"]
        return context

    def form_valid(self, form):

        self.object = form.save(commit=False)
        self.object.save()

        # form.instance.author.add(self.request.user.id)

        context = self.get_context_data(form=form)
        formset = context["answer_formset"]
        # logger.debug(formset.is_valid())
        if formset.is_valid():
            response = super().form_valid(form)
            formset.instance = self.object
            formset.save()

            return response
        else:
            return super().form_invalid(form)


class RapidUpdate(RevisionMixin, AuthorOrCheckerRequiredMixin, UpdateView):
    model = Rapid
    form_class = RapidForm

    #    fields = '__all__'
    #    #fields = [ 'condition' ]
    #    #initial = {'date_of_death': '05/01/2018'}
    #    exclude = [ 'created_date', 'published_date' ]
    def get_form_kwargs(self):
        kwargs = super(RapidUpdate, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(RapidUpdate, self).get_context_data(**kwargs)
        if self.request.POST:
            context["image_formset"] = ImageFormSet(
                self.request.POST, self.request.FILES, instance=self.object
            )
            context["image_formset"].full_clean()
            context["answer_formset"] = AnswerFormSet(
                self.request.POST, instance=self.object
            )
            context["answer_formset"].full_clean()
        else:
            context["image_formset"] = ImageFormSet(instance=self.object)
            context["answer_formset"] = AnswerFormSet(instance=self.object)
        context["question"] = context["object"]
        return context

    def form_valid(self, form):
        # save exam orders (there must be a better way to do this)
        # exam_orders = {}
        # for exam in self.object.exams.all():
        #    exam_orders[exam] = list(exam.exam_questions.all())

        self.object = form.save(commit=False)
        self.object.save()

        form.instance.author.add(self.request.user.id)

        context = self.get_context_data(form=form)
        image_formset = context["image_formset"]
        answer_formset = context["answer_formset"]
        # logger.debug(formset.is_valid())
        if image_formset.is_valid() and answer_formset.is_valid():
            response = super().form_valid(form)
            image_formset.instance = self.object
            image_formset.save()
            answer_formset.instance = self.object
            answer_formset.save()

            # restore exam orders
            # wanted_exams = form["exams"].data
            # for exam in self.object.exams.all():
            #    if exam in exam_orders and self.object in exam_orders[exam]:
            #        print(exam_orders[exam])
            #        exam.exam_questions.set(exam_orders[exam])
            #        exam.save()

            return response
        else:
            return super().form_invalid(form)


class RapidClone(RapidCreateBase):
    """Clones a existing rapid"""

    def get_initial(self):
        # print(self.request)
        old_object = get_object_or_404(Rapid, pk=self.kwargs["pk"])
        initial_data = model_to_dict(old_object, exclude=["id"])

        return initial_data


@login_required
@user_is_author_or_rapid_checker
def rapid_scrap(request, pk):
    try:
        rapid = Rapid.objects.get(pk=pk)
    except Rapid.DoesNotExist:
        raise Http404("Rapid does not exist")

    if (
        not request.user.groups.filter(name="rapid_checker").exists()
        and request.user not in rapid.author.all()
    ):
        raise PermissionDenied()

    rapid.scrapped = not rapid.scrapped
    rapid.save()
    return HttpResponseRedirect(reverse("rapids:question_detail", args=(pk,)))


# @login_required
# def edit_abnormality_popup(request):
#     instance = get_object_or_404(Abnormality, pk = pk)
#     form = AbnormalityForm(request.POST or None)
#     if form.is_valid():
#         instance = form.save()
#         return HttpResponse('<script>opener.closePopup(window, "%s", "%s", "#id_abnormality");</script>' % (instance.pk, instance))
#     return render(request, "rapids/create_simple.html", {'form': form})


@login_required
def create_abnormality(request):
    form = AbnormalityForm(request.POST or None)
    if form.is_valid():
        instance = form.save()
        return HttpResponse(
            '<script>opener.closePopup(window, "%s", "%s", "#id_abnormality");</script>'
            % (instance.pk, instance)
        )
    return render(
        request, "rapids/create_simple.html", {"form": form, "name": "Abnormality"}
    )


@csrf_exempt
def get_abnormality_id(request):
    if request.accepts("application/json")():
        abnormality_name = request.GET["abnormality_name"]
        abnormality_id = Abnormality.objects.get(name=abnormality_name).id
        data = {
            "abnormality_id": abnormality_id,
        }
        return HttpResponse(json.dumps(data), content_type="application/json")
    return HttpResponse("/")


@login_required
def create_examination(request):
    form = ExaminationForm(request.POST or None)
    if form.is_valid():
        instance = form.save()
        return HttpResponse(
            '<script>opener.closePopup(window, "%s", "%s", "#id_examination");</script>'
            % (instance.pk, instance)
        )
    return render(
        request, "rapids/create_simple.html", {"form": form, "name": "Examination"}
    )


@csrf_exempt
def get_examination_id(request):
    if request.accepts("application/json")():
        examination_name = request.GET["examination_name"]
        examination_id = Examination.objects.get(name=examination_name).id
        data = {
            "examination_id": examination_id,
        }
        return HttpResponse(json.dumps(data), content_type="application/json")
    return HttpResponse("/")


@login_required
def create_region(request):
    form = RegionForm(request.POST or None)
    if form.is_valid():
        instance = form.save()
        return HttpResponse(
            '<script>opener.closePopup(window, "%s", "%s", "#id_region");</script>'
            % (instance.pk, instance)
        )
    return render(
        request, "rapids/create_simple.html", {"form": form, "name": "Region"}
    )


@csrf_exempt
def get_region_id(request):
    if request.accepts("application/json")():
        region_name = request.GET["region_name"]
        region_id = Region.objects.get(name=region_name).id
        data = {
            "region_id": region_id,
        }
        return HttpResponse(json.dumps(data), content_type="application/json")
    return HttpResponse("/")


class RapidView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Rapid
    table_class = RapidTable
    template_name = "question_table_view.html"

    filterset_class = RapidFilter

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context["app_name"] = "rapids"
        return context


@login_required
def mark_all(request, exam_pk, sk):
    return mark(request, exam_pk, sk, unmarked_exam_answers_only=False)


@login_required
def mark_review(request, exam_pk, sk):
    return mark(request, exam_pk, sk, unmarked_exam_answers_only=False, review=True)


# @user_passes_test(user_is_admin, login_url="/accounts/login")
@login_required
def mark(request, exam_pk, sk, unmarked_exam_answers_only=True, review=False):
    exam = get_object_or_404(Exam, pk=exam_pk)

    if not exam.exam_mode:
        raise Http404("Packet not in exam mode")

    mark_url = "rapids:mark"
    if review:
        mark_url = "rapids:mark_review"
    elif not unmarked_exam_answers_only:
        mark_url = "rapids:mark_all"

    questions = exam.exam_questions.all()

    n = sk

    question_details = {
        "total": len(questions),
        "current": n + 1,
    }

    try:
        question = questions[sk]
    except IndexError:
        raise Http404("Exam question does not exist")

    if request.method == "POST":

        form = MarkRapidQuestionForm(request.POST)
        # *******************************
        # TODO: convert to JSON request
        # *******************************
        if form.is_valid():
            # If skip button is pressed skip the question without marking
            if "skip" in request.POST:
                return redirect(mark_url, exam_pk=exam_pk, sk=n + 1)

            cd = form.cleaned_data

            marked_answers = json.loads(cd.get("marked_answers"))

            # This should probably use json (or something else...)
            # ajax.....
            to_run = (
                ("correct", Answer.MarkOptions.CORRECT),
                ("half-correct", Answer.MarkOptions.HALF_MARK),
                ("incorrect", Answer.MarkOptions.INCORRECT),
            )

            for status_string, status in to_run:
                for ans in marked_answers[status_string]:
                    ans = ans.strip()
                    if ans == "":
                        continue

                    a = Answer.objects.filter(
                        answer__iexact=ans, question_id=question.pk
                    ).first()

                    if a is None:
                        a = Answer()
                        a.question_id = question.pk
                        a.answer = ans

                    a.status = status
                    a.save()

            if "next" in request.POST:
                return redirect(mark_url, exam_pk=exam_pk, sk=n + 1)
            elif "previous" in request.POST:
                return redirect(mark_url, exam_pk=exam_pk, sk=n - 1)

            # Reset user answers (relies on the functional javascript)
            unmarked_user_answers = set()
    else:
        form = MarkRapidQuestionForm()

    # answers_dict = {}

    # for ans in question.answers.all():
    #    answers_dict[ans.answer_compare] = ans

    correct_answers = []
    half_mark_answers = []
    incorrect_answers = []
    review_user_answers = []
    unmarked_answers_bool = False
    unmarked_user_answers = []
    # this could be improved
    if question.normal:
        incorrect_answers = question.get_user_answers(exam_pk=exam_pk)
        if "" in incorrect_answers:
            incorrect_answers.remove("")
        if "normal" in incorrect_answers:
            incorrect_answers.remove("normal")
    else:
        if review:
            unmarked_user_answers = question.get_user_answers(
                exam_pk=exam_pk, include_normal=False
            )
        elif unmarked_exam_answers_only:
            unmarked_user_answers = question.get_unmarked_user_answers(exam_pk=exam_pk)
        else:
            unmarked_user_answers = question.get_unmarked_user_answers()

        if not unmarked_exam_answers_only:
            correct_answers = question.answers.filter(status=Answer.MarkOptions.CORRECT)
            half_mark_answers = question.answers.filter(
                status=Answer.MarkOptions.HALF_MARK
            )
            incorrect_answers = question.answers.filter(
                status=Answer.MarkOptions.INCORRECT
            )

        if review:
            for ans in unmarked_user_answers:
                # duplicated from user answer model....
                marked_ans = question.answers.filter(answer_compare__iexact=ans).first()
                mark = "unmarked"
                if marked_ans is not None:
                    if marked_ans.status == Answer.MarkOptions.CORRECT:
                        mark = "correct"
                    elif marked_ans.status == Answer.MarkOptions.HALF_MARK:
                        mark = "half-correct"
                    elif marked_ans.status == Answer.MarkOptions.INCORRECT:
                        mark = "incorrect"
                if mark == "unmarked":
                    unmarked_answers_bool = True
                review_user_answers.append((ans, mark))

    return render(
        request,
        "rapids/mark.html",
        {
            "exam": exam,
            "form": form,
            "review": review,
            "question": question,
            "question_number": n,
            "question_details": question_details,
            "unmarked_answers_bool": unmarked_answers_bool,
            "user_answers": unmarked_user_answers,
            "review_user_answers": review_user_answers,
            "correct_answers": correct_answers,
            "half_mark_answers": half_mark_answers,
            "incorrect_answers": incorrect_answers,
            "unmarked_exam_answers_only": unmarked_exam_answers_only,
        },
    )


class QuestionDelete(AuthorOrCheckerRequiredMixin, DeleteView):
    model = Rapid
    success_url = reverse_lazy("rapids:rapid_view")


GenericExamViews = ExamViews(
    Exam, Rapid, Answer, UserAnswer, "rapids", "rapid", normalise_score=normaliseScore
)


class ExamCreate(ExamCreateBase):
    model = Exam
    form_class = ExamForm


class ExamUpdate(ExamUpdateBase, AuthorOrCheckerRequiredMixin):
    model = Exam
    form_class = ExamForm


class ExamDelete(AuthorOrCheckerRequiredMixin, ExamDeleteBase):
    model = Exam


class ExamAuthorUpdate(
    RevisionMixin,
    CheckCanEditMixin,
    LoginRequiredMixin,
    AuthorRequiredMixin,
    UpdateView,
):
    model = Exam
    form_class = ExamAuthorForm
    template_name = "author_form.html"


class UserAnswerView(LoginRequiredMixin, DetailView):
    model = UserAnswer


class UserAnswerTableView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = UserAnswer
    table_class = RapidUserAnswerTable
    template_name = "rapids/user_answer_question_view.html"

    filterset_class = RapidUserAnswerFilter


class UserAnswerDelete(SuperuserRequiredMixin, DeleteView):
    model = UserAnswer
    template_name = "user_answer_delete.html"
    success_url = reverse_lazy("rapids:user_answer_table_view")


class LargeResultsSetPagination(PageNumberPagination):
    page_size = 1000
    page_size_query_param = "page_size"
    max_page_size = 10000


class StandardResultsSetPagination(PageNumberPagination):
    page_size = 100
    page_size_query_param = "page_size"
    max_page_size = 1000


class ExamViewSet(RevisionMixin, viewsets.ModelViewSet):
    # queryset = Exam.objects.all().order_by('name')
    serializer_class = ExamSerializer

    def get_queryset(self):
        """
        This view should return a list exams available to a user.
        """
        user = self.request.user
        if user.groups.filter(name="rapid_checker").exists():
            return Exam.objects.filter(archive=False).order_by("name")

        return Exam.objects.filter(author__id=user.id, archive=False).order_by("name")


# class QuestionAnswerViewSet(viewsets.ModelViewSet):
#    queryset = Answer.objects.all()  # .order_by('name')
#    serializer_class = QuestionAnswerSerializer
#    permission_classes = [permissions.IsAuthenticated]
#
#
# class UserAnswerViewSet(viewsets.ModelViewSet):
#    queryset = UserAnswer.objects.all()  # .order_by('name')
#    serializer_class = UserAnswerSerializer
#    permission_classes = [permissions.IsAuthenticated]


# class RapidViewSet(
#    RevisionMixin,
#    mixins.CreateModelMixin,
#    mixins.RetrieveModelMixin,
#    mixins.UpdateModelMixin,
#    mixins.ListModelMixin,
#    mixins.DestroyModelMixin,
#    viewsets.GenericViewSet,
# ):
#    queryset = Rapid.objects.all()  # .order_by('name')
#    serializer_class = RapidSerializer
#    permission_classes = [permissions.IsAuthenticated]
#    pagination_class = StandardResultsSetPagination


# class AddSuggestedAnswer(LoginRequiredMixin, CreateView):
#    model = QuestionNote
#    form_class = QuestionNoteForm
#
#    #fields = ("author", "note_type", "note")
#
#
#    def get_form_kwargs(self):
#        kwargs = super(AddQuestionNote, self).get_form_kwargs()
#        # update the kwargs for the form init method with yours
#        kwargs.update(self.kwargs)  # self.kwargs contains all url conf params
#        return kwargs
#
#    def get_initial(self):
#        pk = self.kwargs["pk"]
#        question_type = self.kwargs["question_type"]
#        if question_type == "rapid":
#            question = Rapid
#            content_type = ContentType.objects.get(model="rapid")
#        elif question_type == "anatomy":
#            question = AnatomyQuestion
#            content_type = ContentType.objects.get(model="anatomyquestion")
#        elif question_type == "long":
#            question = Long
#            content_type = ContentType.objects.get(model="long")
#        else:
#            raise PermissionError()
#
#        get_object_or_404(question, pk=pk)
#        return { "content_type" : content_type,
#        "object_id" : pk }

GenericViews = GenericViewBase("rapids", Rapid, UserAnswer, Exam)


@user_is_author_or_rapid_checker
def question_anonymise_dicom(request, pk):
    question = get_object_or_404(Rapid, pk=pk)

    question.anonymise_images()

    return redirect("rapids:question_detail", pk=pk)


@user_is_author_or_rapid_checker
def question_save_annotation(request, pk):
    if request.method == "POST":
        question = get_object_or_404(Rapid, pk=pk)

        image_annotations = json.loads(request.POST.get("annotation"))

        question_images = question.images.filter(feedback_image=False)

        for n, image in enumerate(question_images):
            annotation = image_annotations[n]
            if annotation != "undefined":
                image.image_annotations = annotation
            else:
                image.image_annotations = ""
            image.save()

        data = {"status": "success"}
        return JsonResponse(data, status=200)
    else:
        data = {"status": "error"}
        return JsonResponse(data, status=400)


class ExamClone(ExamCloneMixin, ExamCreate):
    """Clone exam view"""


@login_required
def get_question_by_hash(request):
    if request.method == "POST":

        hash = request.POST.get("hash")

        try:
            question = RapidImage.objects.get(image_md5_hash=hash)
            data = {
                "status": "success",
                "id": question.pk,
                "url": question.rapid.get_absolute_url(),
            }
            return JsonResponse(data, status=200)
        except RapidImage.DoesNotExist:
            data = {"status": "success", "id": False}
            return JsonResponse(data, status=200)


# TODO: better permissions
@login_required
def question_json_unbased(request, pk):
    """
    No (file based) caching is enabled for unbased quesitons
    """
    question = get_object_or_404(Rapid, pk=pk)

    question_json = question.get_question_json(based=False)
    return JsonResponse(question_json)


@login_required
def question_json(request, pk):
    question = get_object_or_404(Rapid, pk=pk)

    question_json = question.get_question_json(based=True)
    return JsonResponse(question_json)


@login_required
def question_viewer(request):
    # question = get_object_or_404(Rapid, pk=pk)

    ids = request.GET.get("ids").split(",")

    return render(
        request,
        "rapids/question_viewer.html",
        {
            "ids": ids,
        },
    )


class AnswerAutocomplete(autocomplete.Select2QuerySetView):
    def get_queryset(self):
        # Don't forget to filter out results depending on the visitor !
        if not self.request.user.is_authenticated:
            return Answer.objects.none()

        qs = Answer.objects.all()

        if self.q:
            qs = qs.filter(answer__istartswith=self.q)

        return qs