import json
import pprint
from dal import autocomplete
from django.shortcuts import render, get_object_or_404, redirect
from django import forms
from django.utils import timezone

# 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 (
    FieldError,
    ObjectDoesNotExist,
    PermissionDenied,
    ViewDoesNotExist,
)

from django.contrib.auth.mixins import LoginRequiredMixin, PermissionRequiredMixin
from django.views.generic import View
from django.views.generic.detail import DetailView
import pydicom
from generic.mixins import SuperuserRequiredMixin

from django.views.generic.edit import CreateView, UpdateView, DeleteView, FormView
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 generic.models import CidUser, CidUserExam

from .forms import (
    AddCollectionToCaseForm,
    CaseCollectionCaseFormSet,
    CaseCollectionForm,
    CaseForm,
    CidReportAnswerForm,
    CidReportAnswerMarkForm,
    ConditionAutocompleteForm,
    ConditionForm,
    FindingForm,
    SelfReviewForm,
    SeriesForm,
    SeriesImageFormSet,
    SeriesFormSet,
    SeriesFindingForm,
    CaseDifferentialFormSet,
    StructureForm,
    UserReportAnswerForm,
)
from .models import (
    Case,
    CaseCollection,
    CaseDetail,
    CidReportAnswer,
    Condition,
    Differential,
    PathologicalProcess,
    Presentation,
    SelfReview,
    Series,
    Examination,
    Finding,
    Structure,
    Subspecialty,
    SeriesFinding,
    SeriesImage,
    UncategorisedDicom,
    UserReportAnswer,
)
from .tables import (
    CaseCollectionTable,
    CaseTable,
    ConditionTable,
    FindingTable,
    PathologicalProcessTable,
    PresentationTable,
    SeriesTable,
    StructureTable,
    SubspecialtyTable,
)
from .filters import (
    CaseCollectionFilter,
    CaseFilter,
    ConditionFilter,
    FindingFilter,
    PathologicalProcessFilter,
    PresentationFilter,
    SeriesFilter,
    StructureFilter,
    SubspecialtyFilter,
)

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

from autocomplete import HTMXAutoComplete


from .decorators import (
    user_is_author_or_atlas_editor,
    user_has_case_view_access,
    user_is_author_or_atlas_series_checker_or_atlas_marker,
    user_is_atlas_editor,
    user_is_author_or_atlas_series_checker,
    user_is_atlas_marker,
    user_is_collection_author_or_atlas_editor,
)

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

from django.core.cache import cache
from django.conf import settings

from helpers.images import compare_dicom_datasets, image_as_base64, print_dicom

import logging
from copy import deepcopy
from django.forms.models import model_to_dict

from generic.views import ExamCloneMixin, ExamViews, SeriesImagesZipViewBase
from reversion.views import RevisionMixin
import reversion


from rest_framework import viewsets

import os
import difflib

logger = logging.getLogger(__name__)

def get_cases_available_to_user(user):
    """Returns a queryset of cases available to the user"""
    return Case.objects.filter(author=user) | Case.objects.filter(open_access=True)
    if user.is_superuser:
        return Case.objects.all()
    else:
        return Case.objects.filter(author=user) | Case.objects.filter(open_access=True)


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

class AtlasEditorRequiredMixin(object):
    def get_object(self, *args, **kwargs):
        obj = super().get_object(*args, **kwargs)
        if (
            self.request.user.groups.filter(name="atlas_editor").exists()
            or self.request.user.is_superuser
        ):
            return obj
        raise PermissionDenied("You must be an atlas editor to do this.")  # or Http404

@login_required
@user_has_case_view_access
def case_detail(request, pk):
    case = get_object_or_404(Case, pk=pk)

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

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(request, "atlas/case_detail.html", {"case": case})


@login_required
@user_is_author_or_atlas_series_checker_or_atlas_marker
def series_detail(request, pk, finding_pk=None):
    series = get_object_or_404(Series, pk=pk)

    editing_finding = -1
    if finding_pk is not None:
        finding = get_object_or_404(SeriesFinding, pk=finding_pk)
        series_finding_form = SeriesFindingForm(None, instance=finding)
        editing_finding = finding.pk
    else:
        series_finding_form = SeriesFindingForm(series_id=series.id)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/series.html",
        {
            "series": series,
            "series_finding_form": series_finding_form,
            "editing_finding": editing_finding,
        },
    )


@login_required
#@user_is_atlas_editor
def condition_detail(request, pk):
    condition = get_object_or_404(Condition, pk=pk)

    form = ConditionAutocompleteForm()

    can_merge = False

    if request.user.is_superuser or request.user.groups.filter(name="atlas_editor").exists():
        can_merge = True

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/condition_detail.html",
        {"condition": condition, "form": form, "can_merge": can_merge},
    )


# class GetConditionAutocomplete(HTMXAutoComplete):
#    name = "conditions"
#    multiselect = False
#
#    class Meta:
#        model = Condition


@login_required
@user_is_atlas_editor
def condition_merge(request, pk_to_merge):
    if not request.htmx:
        raise Http404

    condition_to_merge = get_object_or_404(Condition, pk=pk_to_merge)
    # condition_to_merge_into = get_object_or_404(Condition, pk=pk_to_merge_into)

    print(condition_to_merge.case_set)
    if condition_to_merge.rcr_curriculum:
        return HttpResponse("You cannot merge rcr curriculum items")

    condition_to_merge_into = request.POST.get("conditions")

    if not condition_to_merge_into:
        return HttpResponse("You need to select a condition to merge into.")

    condition_to_merge_into = get_object_or_404(Condition, pk=condition_to_merge_into)

    if condition_to_merge == condition_to_merge_into:
        return HttpResponse("You cannot merge into the same condition.")

    # move all relevant relationships
    cases = condition_to_merge.case_set.all().values_list("id", flat=True)
    condition_to_merge_into.case_set.add(cases)
    # cases = Case.objects.filter(condition=condition_to_merge)
    # cases.update(condition=condition_to_merge_into)

    differentials = Differential.objects.filter(condition=condition_to_merge)
    differentials.update(condition=condition_to_merge_into)

    return HttpResponse("Merged")

    # conditions = Condition.objects.all()

    # return render(request, "atlas/condition_options.html", {"conditions": conditions})


@login_required
#@user_is_atlas_editor
def subspecialty_detail(request, pk):
    subspecialty = get_object_or_404(Subspecialty, pk=pk)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/subspecialty_detail.html",
        {
            "subspecialty": subspecialty,
        },
    )


@login_required
#@user_is_atlas_editor
def presentation_detail(request, pk):
    presentation = get_object_or_404(Presentation, pk=pk)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/presentation_detail.html",
        {
            "presentation": presentation,
        },
    )


@login_required
#@user_is_atlas_editor
def pathological_process_detail(request, pk):
    pathological_process = get_object_or_404(PathologicalProcess, pk=pk)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/pathological_process_detail.html",
        {
            "pathological_process": pathological_process,
        },
    )


@login_required
#@user_is_atlas_editor
def structure_detail(request, pk):
    structure = get_object_or_404(Structure, pk=pk)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/structure_detail.html",
        {
            "structure": structure,
        },
    )


@login_required
#@user_is_atlas_editor
def finding_detail(request, pk):
    finding = get_object_or_404(Finding, pk=pk)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/finding_detail.html",
        {
            "finding": finding,
        },
    )


@login_required
def author_detail(request, pk):
    # logging.debug(Author.objects.all())
    # author = get_object_or_404(Author, pk=pk)
    author = User.objects.get(pk=pk)

    if request.user.pk == pk:
        atlas = Case.objects.filter(author=pk)
    else:
        atlas = Case.objects.filter(author=pk, open_access=True)

    return render(
        request, "atlas/category_detail.html", {"category": author, "atlas": atlas}
    )


@user_is_author_or_atlas_editor
def author_list(request):
    authors = User.objects.all()

    return render(request, "atlas/author_list.html", {"authors": authors})


def index(request):
    return render(request, "atlas/index.html", {})


def user_collections(request):
    collections = request.user.user_casecollection_exams.all()

    return render(request, "atlas/user_collections.html", {"collections": collections})

def add_case_to_collection(request, collection_id):
    if not request.htmx:
        return Http404


    collection = get_object_or_404(CaseCollection, pk=collection_id)

    if request.method == "POST":
        case = get_object_or_404(Case, pk=request.POST["case"])
        print(case)
        collection.cases.add(case)
        return HttpResponse("Case added to collection")


    #if request.method == "POST":

    cases = get_cases_available_to_user(request.user)

    return render(request, "atlas/add_case_to_collection.html", {"cases": cases, "collection": collection})

@login_required
def user_uploads_series(request, series_instance_uid: str):
    # We don't restrict to teh uploading user here. Should we?
    dicoms = UncategorisedDicom.objects.filter(series_instance_uid=series_instance_uid)

    if not dicoms:
        raise Http404("Series not found")

    return render(
        request,
        "atlas/user_upload_viewer.html",
        {"dicoms": dicoms, "series_id": series_instance_uid},
    )

@login_required
@user_passes_test(lambda u: u.is_superuser)
def all_uploads(request, case_id: int | None = None):
    return user_uploads(request, case_id, user_only=False)

@login_required
def user_uploads(request, case_id: int | None = None, user_only: bool = True):
    if user_only:
        dicoms = UncategorisedDicom.objects.filter(user=request.user)
    else:
        dicoms = UncategorisedDicom.objects.filter()

    data = defaultdict(list)
    for d in dicoms:
        tags = d.basic_dicom_tags

        if tags is None:
            d.save()
            tags = d.basic_dicom_tags


        data[tags["SeriesInstanceUID"]].append((tags, d.created_date))

    series_list = []
    for series in data:
        tags, date = data[series][0]
        series_list.append((series, len(data[series]), tags, date))
    print(series_list)

    series_list.sort(key=lambda l: l[-1])

    case = False
    if case_id is not None:
        case = get_object_or_404(Case, pk=case_id)

    return render(
        request, "atlas/user_uploads.html", {"series_list": series_list, "case": case}
    )


class CaseDelete(RevisionMixin, AuthorOrCheckerRequiredMixin, DeleteView):
    model = Case
    success_url = reverse_lazy("atlas:case_view")
    template_name = "confirm_delete.html"


class SeriesFindingDelete(RevisionMixin, PermissionRequiredMixin, DeleteView):
    permission_required = "atlas.delete_seriesfinding"
    model = SeriesFinding
    template_name = "confirm_delete.html"
    # success_url = reverse_lazy("atlas:case_view")

    def get_success_url(self):
        pk = self.kwargs["pk"]
        series_id = get_object_or_404(SeriesFinding, pk=pk).series.id
        return reverse("atlas:series_detail", kwargs={"pk": series_id})


class SeriesDelete(RevisionMixin, AtlasEditorRequiredMixin, DeleteView):
    model = Series
    template_name = "confirm_delete.html"
    success_url = reverse_lazy("atlas:series_view")


class CaseCollectionDelete(RevisionMixin, AtlasEditorRequiredMixin, DeleteView):
    model = CaseCollection
    template_name = "confirm_delete.html"
    success_url = reverse_lazy("atlas:collection_view")


class ConditionDelete(RevisionMixin, AtlasEditorRequiredMixin, DeleteView):
    model = Condition
    template_name = "confirm_delete.html"
    success_url = reverse_lazy("atlas:condition_view")


class FindingDelete(RevisionMixin, AtlasEditorRequiredMixin, DeleteView):
    model = Finding
    template_name = "confirm_delete.html"
    success_url = reverse_lazy("atlas:finding_view")


class StructureDelete(RevisionMixin, AtlasEditorRequiredMixin, DeleteView):
    model = Structure
    template_name = "confirm_delete.html"
    success_url = reverse_lazy("atlas:structure_view")


class CaseCollectionCreate(RevisionMixin, LoginRequiredMixin, CreateView):
    model = CaseCollection
    form_class = CaseCollectionForm

    def get_initial(self):
        # print(self.request)
        if "pk" in self.kwargs:
            initial = super(CaseCollectionCreate, self).get_initial()
            # case = get_object_or_404(Case, pk=self.kwargs["pk"])

            # initial["case"] = case.id

            return initial

    def get_form_kwargs(self):
        kwargs = super(CaseCollectionCreate, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(CaseCollectionCreate, self).get_context_data(**kwargs)

        if self.request.POST:
            context["case_formset"] = CaseCollectionCaseFormSet(
                self.request.POST,
                self.request.FILES,
                form_kwargs={"user": self.request.user},
            )
            context["case_formset"].full_clean()
        else:
            context["case_formset"] = CaseCollectionCaseFormSet(
                form_kwargs={"user": self.request.user}
            )
        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)
        case_formset = context["case_formset"]
        if case_formset.is_valid():
            response = super().form_valid(form)
            case_formset.instance = self.object
            case_formset.save()
            return response

        else:
            return super().form_invalid(form)


class SeriesCreate(RevisionMixin, LoginRequiredMixin, CreateView):
    model = Series
    form_class = SeriesForm

    def get_initial(self):
        # print(self.request)
        if "pk" in self.kwargs:
            initial = super().get_initial()
            case = get_object_or_404(Case, pk=self.kwargs["pk"])

            initial["case"] = case.id

            return initial

    def get_form_kwargs(self):
        kwargs = super(SeriesCreate, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(SeriesCreate, self).get_context_data(**kwargs)

        if self.request.POST:
            context["image_formset"] = SeriesImageFormSet(
                self.request.POST, self.request.FILES
            )
            context["image_formset"].full_clean()
        else:
            context["image_formset"] = SeriesImageFormSet()
        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)
        series_formset = context["image_formset"]
        if series_formset.is_valid():
            response = super().form_valid(form)
            series_formset.instance = self.object
            series_formset.save()
            return response

        else:
            return super().form_invalid(form)


class CaseCollectionUpdate(RevisionMixin, AuthorOrCheckerRequiredMixin, UpdateView):
    model = CaseCollection
    form_class = CaseCollectionForm
    template_name = "atlas/collection_update_form.html"

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

    def get_form_kwargs(self):
        kwargs = super(CaseCollectionUpdate, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(CaseCollectionUpdate, self).get_context_data(**kwargs)
        if self.request.POST:
            context["case_formset"] = CaseCollectionCaseFormSet(
                self.request.POST,
                self.request.FILES,
                instance=self.object,
                form_kwargs={"user": self.request.user},
            )
            context["case_formset"].full_clean()
        else:
            context["case_formset"] = CaseCollectionCaseFormSet(
                instance=self.object, form_kwargs={"user": self.request.user}
            )

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

            # restore exam orders
            # 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 SeriesUpdate(
    RevisionMixin, LoginRequiredMixin, AuthorOrCheckerRequiredMixin, UpdateView
):
    model = Series
    form_class = SeriesForm

    #    fields = '__all__'
    #    #fields = [ 'condition' ]
    #    #initial = {'date_of_death': '05/01/2018'}
    #    exclude = [ 'created_date', 'published_date' ]
    def get_context_data(self, **kwargs):
        context = super(SeriesUpdate, self).get_context_data(**kwargs)
        if self.request.POST:
            context["image_formset"] = SeriesImageFormSet(
                self.request.POST, self.request.FILES, instance=self.object
            )

            context["image_formset"].full_clean()
        else:
            context["image_formset"] = SeriesImageFormSet(instance=self.object)
        return context

    def get_form_kwargs(self):
        kwargs = super(SeriesUpdate, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    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"]
        # logger.debug(formset.is_valid())
        if image_formset.is_valid():
            response = super().form_valid(form)
            image_formset.instance = self.object
            image_formset.save()
            return response
        else:
            return super().form_invalid(form)


class ConditionUpdate(RevisionMixin, LoginRequiredMixin, UpdateView):
    model = Condition
    form_class = ConditionForm


class ConditionCreate(RevisionMixin, LoginRequiredMixin, CreateView):
    model = Condition
    form_class = ConditionForm


class FindingUpdate(RevisionMixin, LoginRequiredMixin, UpdateView):
    model = Finding
    form_class = FindingForm


class FindingCreate(RevisionMixin, LoginRequiredMixin, CreateView):
    model = Finding
    form_class = FindingForm


class StructureUpdate(RevisionMixin, LoginRequiredMixin, UpdateView):
    model = Structure
    form_class = StructureForm


class StructureCreate(RevisionMixin, LoginRequiredMixin, CreateView):
    model = Structure
    form_class = StructureForm


class AtlasCreateBase(RevisionMixin, LoginRequiredMixin):
    model = Case
    form_class = CaseForm

    def get_form_kwargs(self):
        kwargs = super(AtlasCreateBase, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(AtlasCreateBase, self).get_context_data(**kwargs)
        if self.request.POST:
            context["series_formset"] = SeriesFormSet(
                self.request.POST,
                self.request.FILES,
                form_kwargs={"user": self.request.user},
            )
            context["casedifferential_formset"] = CaseDifferentialFormSet(
                self.request.POST, self.request.FILES
            )
            context["series_formset"].full_clean()
            context["casedifferential_formset"].full_clean()
        else:
            # context["series_formset"] = SeriesFormSet(instance=Case.objects.filter(author__id=self.request.user.id), queryset=Series.objects.filter(author__id=self.request.user.id))
            context["series_formset"] = SeriesFormSet(
                form_kwargs={"user": self.request.user}
            )
            context["casedifferential_formset"] = CaseDifferentialFormSet()
        return context

    def form_valid(self, form):
        self.object = form.save(commit=False)

        # Add exam objects

        self.object.save()

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

        context = self.get_context_data(form=form)
        series_formset = context["series_formset"]
        casedifferential_formset = context["casedifferential_formset"]
        if series_formset.is_valid() and casedifferential_formset.is_valid():
            response = super().form_valid(form)
            series_formset.instance = self.object
            series_formset.save()
            casedifferential_formset.instance = self.object
            casedifferential_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("atlas:case_clone", pk=self.object.pk)

        else:
            return super().form_invalid(form)


# @login_required
class AtlasCreate(AtlasCreateBase, CreateView):
    def get_initial(self):
        if "pk" in self.kwargs:
            initial = super().get_initial()
            exam = get_object_or_404(CaseCollection, 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.atlas_default.site.all())
        #    self.initial.update({"site": s})
        # except AttributeError:
        #    pass
        # return self.initial


class AtlasUpdate(
    RevisionMixin, LoginRequiredMixin, AuthorOrCheckerRequiredMixin, UpdateView
):
    model = Case
    form_class = CaseForm

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

    def get_form_kwargs(self):
        kwargs = super(AtlasUpdate, self).get_form_kwargs()
        kwargs.update({"user": self.request.user})
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(AtlasUpdate, self).get_context_data(**kwargs)
        if self.request.POST:
            context["series_formset"] = SeriesFormSet(
                self.request.POST,
                self.request.FILES,
                instance=self.object,
                form_kwargs={"user": self.request.user},
            )
            context["casedifferential_formset"] = CaseDifferentialFormSet(
                self.request.POST, self.request.FILES, instance=self.object
            )
            context["series_formset"].full_clean()
            context["casedifferential_formset"].full_clean()
        else:
            context["series_formset"] = SeriesFormSet(
                instance=self.object, form_kwargs={"user": self.request.user}
            )
            context["casedifferential_formset"] = CaseDifferentialFormSet(
                instance=self.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)
        series_formset = context["series_formset"]
        casedifferential_formset = context["casedifferential_formset"]
        # logger.debug(formset.is_valid())
        if series_formset.is_valid() and casedifferential_formset.is_valid():
            response = super().form_valid(form)
            series_formset.instance = self.object
            series_formset.save()
            casedifferential_formset.instance = self.object
            casedifferential_formset.save()

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


def add_collection_to_case_form(request, case_id):
    if request.method == "POST":
        form = AddCollectionToCaseForm(request.POST, user=request.user)
        if form.is_valid():
            case = get_object_or_404(Case, pk=case_id)

            case.casecollection_set.add(*form.cleaned_data["casecollection"])
            # do_something_with_form_data(form.cleaned_data)
            return HttpResponse("Done")
            return render(request, "web/htmx_contact_form_confirm.html")
    else:
        form = AddCollectionToCaseForm(user=request.user)
    return render(
        request,
        "generic_form.html",
        {
            "form": form,
            "target_url": reverse("atlas:case_collection_form", args=(case_id,)),
        },
    )


# class AddCollectionToCaseView(FormView):
#    form_class = AddCollectionToCaseForm
#    template_name = "generic_form.html"
#
#    def form_valid(self, form):
#        form.save()
#        return super(AddCollectionToCaseView, self).form_valid(form)
#
#    def get_form_kwargs(self):
#        kwargs = super(AddCollectionToCaseView, self).get_form_kwargs()
#        kwargs.update({"user": self.request.user})
#        return kwargs
#
#    def get_success_url(self) -> str:
#        pk = self.kwargs["pk"]
#        return reverse("atlas:case_detail", kwargs={"pk": pk})


class AtlasClone(AtlasCreateBase, AuthorOrCheckerRequiredMixin, CreateView):
    """Clones a existing atlas"""

    #    fields = '__all__'
    #    #fields = [ 'condition' ]
    #    #initial = {'date_of_death': '05/01/2018'}
    #    exclude = [ 'created_date', 'published_date' ]
    def get_initial(self):
        # print(self.request)
        old_object = get_object_or_404(Case, pk=self.kwargs["pk"])

        if (
            self.request.user.groups.filter(name="atlas_editor").exists()
            or self.request.user.is_superuser
        ):
            pass
        else:
            if self.request.user not in old_object.get_author_objects():
                raise PermissionDenied()  # or Http404
            else:
                pass

        initial_data = model_to_dict(old_object, exclude=["id"])
        return initial_data



@login_required
@user_is_author_or_atlas_editor
def atlas_scrap(request, pk):
    try:
        atlas = Case.objects.get(pk=pk)
    except Case.DoesNotExist:
        raise Http404("Case does not exist")

    atlas.scrapped = not atlas.scrapped
    atlas.save()
    return HttpResponseRedirect(reverse("atlas:case_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, "atlas/create_simple.html", {'form': form})


@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("/")


class CaseView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Case
    table_class = CaseTable
    template_name = "atlas/view.html"

    filterset_class = CaseFilter


class SeriesView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Series
    table_class = SeriesTable
    template_name = "atlas/view.html"

    filterset_class = SeriesFilter


class ConditionView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Condition
    table_class = ConditionTable
    template_name = "atlas/view.html"

    filterset_class = ConditionFilter


class SubspecialtyView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Subspecialty
    table_class = SubspecialtyTable
    template_name = "atlas/view.html"

    filterset_class = SubspecialtyFilter


class PresentationView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Presentation
    table_class = PresentationTable
    template_name = "atlas/view.html"

    filterset_class = PresentationFilter


class PathologicalProcessView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = PathologicalProcess
    table_class = PathologicalProcessTable
    template_name = "atlas/view.html"

    filterset_class = PathologicalProcessFilter


class StructureView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Structure
    table_class = StructureTable
    template_name = "atlas/view.html"

    filterset_class = StructureFilter


class FindingView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = Finding
    table_class = FindingTable
    template_name = "atlas/view.html"

    filterset_class = FindingFilter

@login_required
def case_order_dicom(request, pk):
    if request.htmx:
        case = get_object_or_404(Case, pk=pk)

        fail = []
        for series in case.series.all():
            try:
                if request.user in series.get_author_objects():
                    series.order_by_dicom()
                else:
                    fail.append(series.pk)
            except:
                fail.append(series.pk)

        if fail:
            return HttpResponse(f"Unable to order series {','.join([str(i) for i in fail])}")
        else:
            return HttpResponse("Series reordered")


    raise Http404


@login_required
@user_is_author_or_atlas_series_checker
def series_order_dicom(request, pk):
    series = get_object_or_404(Series, pk=pk)
    try:
        series.order_by_dicom()
    except:
        return HttpResponse("<h1>Series does not appear to contain dicoms</h1>")

    return redirect("atlas:series_detail", pk=pk)

@login_required
def image_diff(request):
    if request.htmx:

        image_ids = request.POST.getlist("image-id")

        if len(image_ids) == 2:
            first: SeriesImage = get_object_or_404(SeriesImage, pk=image_ids[0])
            second: SeriesImage = get_object_or_404(SeriesImage, pk=image_ids[1])

            first_ds = pydicom.read_file(first.image.file)
            #del first_ds.PixelData
            #j1 = first_ds.to_json_dict()
            f = print_dicom(first_ds, join=False)

            second_ds = pydicom.read_file(second.image.file)
            #del second_ds.PixelData
            #j2 = second_ds.to_json_dict()
            s = print_dicom(second_ds, join=False)

            diff = difflib.HtmlDiff().make_table(f, s)
            
            dict_diff = pprint.pformat(compare_dicom_datasets(first_ds, second_ds))

            #return HttpResponse(diff)

            return HttpResponse(f"<pre>{dict_diff}</pre><br/>{diff}")
        
        else:
            ds_set = []
            for pk in image_ids:
                series_image = get_object_or_404(SeriesImage, pk=pk)
                ds_set.append(pydicom.read_file(series_image.image.file))

            dict_diff = pprint.pformat(compare_dicom_datasets(*ds_set))
            return HttpResponse(f"<pre>{dict_diff}</pre>")


    return HttpResponse("Fail")


@login_required
def series_image_dicom(request, pk):
    image = get_object_or_404(SeriesImage, pk=pk)

    return render(request, "atlas/series_image_dicom.html", {"image": image})


@login_required
@user_is_author_or_atlas_series_checker
def series_anonymise_dicom(request, pk):
    series = get_object_or_404(Series, pk=pk)

    series.anonymise_images()

    return redirect("atlas:series_detail", pk=pk)


@login_required
@user_is_author_or_atlas_series_checker
def series_order_dicom_instance(request, pk):
    series = get_object_or_404(Series, pk=pk)
    try:
        series.order_by_dicom("InstanceNumber")
    except:
        return HttpResponse(
            "<h1>Series does not appear to contain dicoms (or field InstanceNumber)</h1>"
        )

    return redirect("atlas:series_detail", pk=pk)


@login_required
@user_is_author_or_atlas_series_checker
def series_order_dicom_SeriesInstanceUID(request, pk):
    series = get_object_or_404(Series, pk=pk)
    try:
        series.order_by_dicom("SeriesInstanceUID")
    except:
        return HttpResponse(
            "<h1>Series does not appear to contain dicoms (or field SeriesInstanceUID)</h1>"
        )

    return redirect("atlas:series_detail", pk=pk)


@login_required
@user_is_author_or_atlas_series_checker
def series_order_upload_filename(request, pk):
    series = get_object_or_404(Series, pk=pk)
    series.order_by_upload_filename()

    return redirect("atlas:series_detail", pk=pk)


# Vendored in from BaseZipView
class SeriesImagesZipView(SeriesImagesZipViewBase, SuperuserRequiredMixin):
    series_object = Series


def create_series_findings(request):
    # posts = Post.objects.all()
    response_data = {}

    if request.POST.get("action") == "post":
        series_finding_id = int(request.POST.get("series_finding_id"))
        series_id = request.POST.get("series")
        findings_ids = json.loads(request.POST.get("findings"))
        structure_ids = json.loads(request.POST.get("structures"))
        description = request.POST.get("description")
        annotation_json = request.POST.get("annotation_json")
        viewport_json = request.POST.get("viewport_json")

        series = Series.objects.get(pk=series_id)
        findings = Finding.objects.filter(pk__in=findings_ids)
        structures = Structure.objects.filter(pk__in=structure_ids)

        if series_finding_id > 0:
            sf = get_object_or_404(SeriesFinding, pk=series_finding_id)
            sf.series = series
            sf.description = description
            sf.annotation_json = annotation_json
            sf.viewport_json = viewport_json
        else:
            sf = SeriesFinding.objects.create(
                series=series,
                description=description,
                annotation_json=annotation_json,
                viewport_json=viewport_json,
            )

        sf.findings.set(findings)
        sf.structures.set(structures)
        sf.save()
        return JsonResponse({"success": True})

    return JsonResponse({"success": False})
    return render(request, "create_post.html", {"posts": posts})


class ConditionAutocomplete(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 Condition.objects.none()

        qs = Condition.objects.all()

        if self.q:
            # This raises a fielderror which breaks creating a new item if not caught
            try:
                qs = qs.filter(name__icontains=self.q)
            except FieldError:
                return Condition.objects.none()

        return qs


class ConditionAutocompleteRCRCurriculum(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 Condition.objects.none()

        qs = Condition.objects.filter(rcr_curriculum=True)

        if self.q:
            # This raises a fielderror which breaks creating a new item if not caught
            try:
                qs = qs.filter(name__icontains=self.q, rcr_curriculum=True)
            except FieldError:
                return Condition.objects.none()

        return qs


class PresentationAutocomplete(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 Presentation.objects.none()

        qs = Presentation.objects.all()

        if self.q:
            # This raises a fielderror which breaks creating a new item if not caught
            try:
                qs = qs.filter(name__icontains=self.q)
            except FieldError:
                return Presentation.objects.none()

        return qs


class FindingAutocomplete(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 Finding.objects.none()

        qs = Finding.objects.all()

        if self.q:
            # This raises a fielderror which breaks creating a new item if not caught
            try:
                qs = qs.filter(name__icontains=self.q)
            except FieldError:
                return Finding.objects.none()

        return qs


class StructureAutocomplete(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 Structure.objects.none()

        qs = Structure.objects.all()

        if self.q:
            # This raises a fielderror which breaks creating a new item if not caught
            try:
                qs = qs.filter(name__icontains=self.q)
            except FieldError:
                return Structure.objects.none()

        return qs


@login_required
# @user_is_atlas_editor
def categories_list(request):
    # condition = get_object_or_404(Condition, pk=pk)

    # logging.debug(atlas.subspecialty.first().name.all())
    return render(
        request,
        "atlas/categories_list.html",
        # {
        #    "condition": condition,
        # },
    )


# def collection_view(request):
#    collections = CaseCollection.objects.all()
#
#    return render(
#        request, "atlas/collection_view.html", {"collections": collections}
#    )
class CollectionView(LoginRequiredMixin, SingleTableMixin, FilterView):
    model = CaseCollection
    table_class = CaseCollectionTable
    template_name = "atlas/view.html"

    filterset_class = CaseCollectionFilter

@user_is_collection_author_or_atlas_editor
def collection_viva(request, pk):
    collection = get_object_or_404(CaseCollection, pk=pk)

    cases = collection.cases.all().order_by("casedetail__sort_order")

    return render(
        request,
        "atlas/collection_viva.html",
        {"collection": collection, "cases": cases, "can_edit": True},
    )

@user_is_collection_author_or_atlas_editor
def collection_viva_case(request, pk, case_number):
    collection = get_object_or_404(CaseCollection, pk=pk)

    cases = collection.cases.all().order_by("casedetail__sort_order")
    current_case = cases[case_number]

    return render(
        request,
        "atlas/collection_viva_case.html",
        {"collection": collection, "cases": cases, "current_case": current_case},
    )

@user_is_collection_author_or_atlas_editor
def collection_viva_series(request, pk, series_id):
    collection = get_object_or_404(CaseCollection, pk=pk)

    series = get_object_or_404(Series, pk=series_id)

    return render(
        request,
        "atlas/collection_viva_case.html",
        {"collection": collection, "current_case": series},
    )


@user_is_collection_author_or_atlas_editor
def collection_detail(request, pk):
    collection = get_object_or_404(CaseCollection, pk=pk)

    cases = collection.cases.all().order_by("casedetail__sort_order")

    return render(
        request,
        "atlas/collection_detail.html",
        {"collection": collection, "cases": cases, "can_edit": True},
    )


def collection_take_start(request, pk):
    """The starting page for taking / reviewing a case collection

    Args:
        request (_type_): _description_
        pk (_type_): _description_

    Returns:
        _type_: _description_
    """
    collection = get_object_or_404(CaseCollection, pk=pk)

    valid_user = (collection.check_logged_in_user(request),)

    cid_exam = None
    if collection.collection_type == "REV" or valid_user:
        cid_exam = collection.get_cid_user_exams(user_user=request.user).first()

    template_variables = {
        "collection": collection,
        "valid_user": valid_user,
        "cid_exam": cid_exam,
    }

    match collection.collection_type:
        case "REP":
            return render(
                request, "atlas/collection_take_start.html", template_variables
            )
        case "REV":
            return render(
                request, "atlas/collection_review_start.html", template_variables
            )


@user_is_collection_author_or_atlas_editor
def collection_mark_overview(request, pk):
    collection = get_object_or_404(CaseCollection, pk=pk)

    if collection.collection_type == "REV":
        raise Http404("Collection in review mode")

    cases = collection.cases.all().order_by("casedetail__sort_order").prefetch_related()

    case_details = CaseDetail.objects.filter(
        case__in=cases, collection=collection
    ).prefetch_related("case")

    answers = CidReportAnswer.objects.filter(question__in=case_details)

    case_map = {}
    for cd in case_details:
        case_map[cd] = []

    for answer in answers:
        case_map[answer.question].append(answer)

    return render(
        request,
        "atlas/collection_mark_overview.html",
        {
            "collection": collection,
            "answers": answers,
            "case_details": case_details,
            "case_map": case_map,
        },
    )


@user_is_collection_author_or_atlas_editor
def collection_mark_question(request, pk, case_number):
    collection = get_object_or_404(CaseCollection, pk=pk)

    if collection.collection_type == "REV":
        raise Http404("Collection in review mode")

    case, case_count = collection.get_case_by_index(case_number, case_count=True)

    previous = case_number > 0
    next = case_number < (case_count - 1)

    case_detail = CaseDetail.objects.filter(case=case, collection=collection)

    answers = CidReportAnswer.objects.filter(question__in=case_detail)

    answer_forms = []
    if request.method == "POST":
        for answer in answers:
            if answer:
                form = CidReportAnswerMarkForm(
                    request.POST, instance=answer, prefix=answer.id
                )
            else:
                form = CidReportAnswerMarkForm(request.POST, prefix=answer.id)
            if form.is_valid():
                answer = form.save(commit=False)
                # answer.cid = cid
                # answer.question = case_detail
                # answer.published_date = timezone.now()
                answer.save()

        kwargs = {"pk": pk}

        if "save" in request.POST:
            return redirect(
                "atlas:collection_mark_question", case_number=case_number, **kwargs
            )
        if "next" in request.POST:
            return redirect(
                "atlas:collection_mark_question", case_number=case_number + 1, **kwargs
            )
        elif "previous" in request.POST:
            return redirect(
                "atlas:collection_mark_question", case_number=case_number - 1, **kwargs
            )
        elif "goto" in request.POST:
            return redirect(
                "atlas:collection_mark_question",
                case_number=int(request.POST.get("goto")),
                **kwargs,
            )
    else:
        for answer in answers:
            form = CidReportAnswerMarkForm(instance=answer, prefix=answer.pk)
            answer_forms.append((answer, form))

    series_list = case.series.all().prefetch_related("images", "examination", "plane")

    return render(
        request,
        "atlas/collection_mark_question.html",
        {
            "collection": collection,
            "series_list": series_list,
            "answers": answers,
            "case_detail": case_detail,
            "case": case,
            "case_number": case_number,
            "answer_forms": answer_forms,
            "previous": previous,
            "next": next,
        },
    )


@user_is_collection_author_or_atlas_editor
def exam_cids(request, pk):
    collection = get_object_or_404(CaseCollection, pk=pk)

    if (
        request.user in collection.author.all()
        or request.user.groups.filter(name="cid_user_manager").exists()
    ):
        cid_users = collection.valid_cid_users.all()

        cid_user_count = cid_users.count()
        return render(
            request,
            "atlas/exam_cids.html",
            {
                "collection": collection,
                "cid_users": cid_users,
                "cid_user_count": cid_user_count,
            },
        )

    raise PermissionDenied


def collection_take_overview_user(request, pk):
    return collection_take_overview(request, pk)


def collection_take_overview(
    request, pk: int, cid: int | None = None, passcode: str | None = None
):
    """
    Summary page that shows which questions a user has attempted
    (with / without answers)

    Args:
        request (_type_): _description_
        pk (int): _description_
        cid (int | None, optional): _description_. Defaults to None.
        passcode (str | None, optional): _description_. Defaults to None.

    Returns:
        _type_: _description_
    """
    collection = get_object_or_404(CaseCollection, pk=pk)

    collection.check_user_can_take(cid, passcode, request)

    cid_user_exam = collection.get_or_create_cid_user_exam(
        cid=cid, user_user=request.user
    )

    if request.htmx:
        if "finish" in request.POST:
            cid_user_exam.completed = True
            cid_user_exam.save()

            return HttpResponse("True")
        else:
            raise Http404()

    cases = collection.cases.all().order_by("casedetail__sort_order").prefetch_related()

    case_details = CaseDetail.objects.filter(case__in=cases, collection=collection)

    if cid is not None:
        answers = CidReportAnswer.objects.filter(cid=cid, question__in=case_details)
    else:
        answers = UserReportAnswer.objects.filter(
            user=request.user, question__in=case_details
        )

    answer_question_map = {}
    for ans in answers:
        answer_question_map[ans.question] = ans

    question_answer_tuples = []
    answer_count = 0
    for cd in case_details:
        self_review = cid_user_exam.selfreview_set.filter(case=cd.case)
        if cd in answer_question_map and answer_question_map[cd].answer:
            question_answer_tuples.append((cd, answer_question_map[cd], self_review))
            answer_count += 1
        else:
            question_answer_tuples.append((cd, None, self_review))

    return render(
        request,
        "atlas/collection_take_overview.html",
        {
            "collection": collection,
            "cid": cid,
            "question_answer_tuples": question_answer_tuples,
            "answer_count": answer_count,
            "collection_length": len(cases),
            "passcode": passcode,
            "cid_user_exam": cid_user_exam,
        },
    )


def collection_case_view_take_user(request, pk: int, case_number: int):
    return collection_case_view_take(request, pk, case_number)


def collection_case_view_take(
    request, pk: int, case_number: int, cid=None, passcode=None
):
    """
    Displays the page from which the user takes a case in the collection

    Args:
        request (_type_): _description_
        pk (int): _description_
        case_number (int): _description_
        cid (_type_, optional): _description_. Defaults to None.
        passcode (_type_, optional): _description_. Defaults to None.

    Raises:
        Http404: If user does not have access

    Returns:
        _type_: _description_
    """
    collection = get_object_or_404(CaseCollection, pk=pk)

    form = None
    answer: None | CidReportAnswer | UserReportAnswer = None

    collection.check_user_can_take(cid, passcode, request)

    case, case_count = collection.get_case_by_index(case_number, case_count=True)

    cid_user_exam = collection.get_or_create_cid_user_exam(
        cid=cid, user_user=request.user
    )

    if cid_user_exam.start_time is None:
        cid_user_exam.start_time = timezone.now()
        cid_user_exam.save()

    if not collection.review_only():
        if collection.collection_type == "REP":
            case_detail = CaseDetail.objects.get(case=case, collection=collection)

            if cid is not None:
                answer = case_detail.cidreportanswer_set.filter(cid=cid).first()
                ReportAnswerForm = CidReportAnswerForm
            else:
                answer = case_detail.userreportanswer_set.filter(
                    user=request.user
                ).first()
                ReportAnswerForm = UserReportAnswerForm

    if request.method == "POST":
        if collection.collection_type == "REP":
            if not collection.publish_results:
                if answer:
                    form = ReportAnswerForm(request.POST, instance=answer)
                else:
                    form = ReportAnswerForm(request.POST)

                if not cid_user_exam.completed:
                    if form.is_valid():
                        answer = form.save(commit=False)
                        answer.set_cid_or_user(cid=cid, user=request.user)
                        answer.question = case_detail
                        # answer.published_date = timezone.now()
                        answer.save()

                        cid_user_exam.end_time = timezone.now()
                        cid_user_exam.save()

        if cid is not None:
            kwargs = {"pk": pk, "cid": cid, "passcode": passcode}
            redirect_url = "atlas:collection_case_view_take"
            overview_url = "atlas:collection_take_overview"
        else:
            kwargs = {"pk": pk}
            redirect_url = "atlas:collection_case_view_take_user"
            overview_url = "atlas:collection_take_overview_user"

        if "next" in request.POST:
            return redirect(redirect_url, case_number=case_number + 1, **kwargs)
        elif "previous" in request.POST:
            return redirect(redirect_url, case_number=case_number - 1, **kwargs)
        elif "finish" in request.POST:
            return redirect(overview_url, **kwargs)
        elif "goto" in request.POST:
            return redirect(
                redirect_url,
                case_number=int(request.POST.get("goto")),
                **kwargs,
            )
    else:
        if collection.collection_type == "REP":
            form = ReportAnswerForm(instance=answer)

    series_list = case.series.all().prefetch_related("images", "examination", "plane")

    print("case_no")
    previous = case_number > 0
    next = case_number < (case_count - 1)

    # Set what details a user is / is not able to view when taking the case
    # this can be configured via the collection edit menu
    if collection.publish_results or cid_user_exam.completed:
        completed = True
        show_title = collection.show_title_post
        show_history = collection.show_history_post
        show_description = collection.show_description_post
        show_discussion = collection.show_discussion_post
        show_report = collection.show_report_post

        self_review = cid_user_exam.selfreview_set.filter(case=case)
    else:
        completed = False
        show_title = collection.show_title_pre
        show_history = collection.show_history_pre
        show_description = collection.show_description_pre
        show_discussion = collection.show_discussion_pre
        show_report = collection.show_report_pre
        self_review = []

    return render(
        request,
        "atlas/collection_case_view_take.html",
        {
            "form": form,
            "collection": collection,
            "case": case,
            "series_list": series_list,
            "case_number": case_number,
            "previous": previous,
            "next": next,
            "cid": cid,
            "passcode": passcode,
            "answer": answer,
            "show_title": show_title,
            "show_history": show_history,
            "show_description": show_description,
            "show_discussion": show_discussion,
            "show_report": show_report,
            "cid_user_exam": cid_user_exam,
            "completed": completed,
            "self_review": self_review,
        },
    )


@user_is_collection_author_or_atlas_editor
def collection_case_view(request, pk, case_number):
    """Edit/management overview of the case (as part of the collection)

    Args:
        request (_type_): _description_
        pk (_type_): _description_
        case_number (_type_): _description_

    Raises:
        Http404: _description_

    Returns:
        _type_: _description_
    """
    collection = get_object_or_404(CaseCollection, pk=pk)

    form = None
    answer = None

    case, case_count = collection.get_case_by_index(case_number, case_count=True)

    series_list = case.series.all().prefetch_related("images", "examination", "plane")

    previous = case_number > 0
    next = case_number < (case_count - 1)

    return render(
        request,
        "atlas/case_detail.html",
        {
            "form": form,
            "collection": collection,
            "collection_length": case_count,
            "case": case,
            "series_list": series_list,
            "case_number": case_number,
            "previous": previous,
            "next": next,
            "answer": answer,
        },
    )


def case_dicom_json(request, pk):
    case = get_object_or_404(Case, pk=pk)

    return JsonResponse(case.get_case_dicom_json())

def series_dicom_json(request, pk):
    series = get_object_or_404(Series, pk=pk)

    return JsonResponse(series.get_ohif_dicom_json())

@user_is_collection_author_or_atlas_editor
def delete_collection_cid_answers(request, exam_id, cid):
    collection = get_object_or_404(CaseCollection, pk=exam_id)

    cases = collection.cases.all().order_by("casedetail__sort_order").prefetch_related()

    case_details = CaseDetail.objects.filter(
        case__in=cases, collection=collection
    ).prefetch_related("case")

    cid_user_answers = CidReportAnswer.objects.filter(
        question__in=case_details, cid=cid
    )

    temp = {}
    for ans in cid_user_answers:
        temp[ans.pk] = (ans.question.pk, ans.score, ans.cid, ans.answer)
        ans.delete()

    return JsonResponse(temp)


@user_is_collection_author_or_atlas_editor
def delete_collection_answers(request, exam_id):
    collection = get_object_or_404(CaseCollection, pk=exam_id)

    cases = collection.cases.all().order_by("casedetail__sort_order").prefetch_related()

    case_details = CaseDetail.objects.filter(
        case__in=cases, collection=collection
    ).prefetch_related("case")

    cid_user_answers = CidReportAnswer.objects.filter(question__in=case_details)

    temp = {}
    for ans in cid_user_answers:
        temp[ans.pk] = (ans.question.pk, ans.score, ans.cid, ans.answer)
        ans.delete()

    return JsonResponse(temp)


# TODO: this needs a major cleanup
@user_is_collection_author_or_atlas_editor
def collection_scores_cid(request, pk):
    collection = get_object_or_404(CaseCollection, pk=pk)

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

    user_answers_and_marks = defaultdict(list)
    user_answers_marks = defaultdict(list)
    user_answers = defaultdict(list)
    user_names = {}
    # cid_passcodes = {}

    by_question = defaultdict(dict)
    unmarked = set()

    cases = collection.cases.all().order_by("casedetail__sort_order").prefetch_related()

    case_details = CaseDetail.objects.filter(
        case__in=cases, collection=collection
    ).prefetch_related("case")

    cid_user_answers = CidReportAnswer.objects.filter(question__in=case_details)

    # questions = exam.exam_questions.all().prefetch_related("answers")

    # cid_user_answers = CidReportAnswer.objects.select_related("question").filter(
    #    question__in=questions, exam__id=pk
    # )

    cids = set()

    case_list = list(cases)

    # Loop through all candidates
    for cid_user_answer in cid_user_answers:
        # Convoluted (probably...)
        cid = cid_user_answer.cid
        # cid_passcodes[cid] = cid_user_answer.passcode
        cids.add(cid)
        s = cid_user_answer
        user_names[cid] = cid

        q = cid_user_answer.question.case

        # if not s:
        #    # skip if no answer
        #    user_answers_marks[cid].append(0)
        #    user_answers[cid].append("")
        #    by_question[q].append(("", 0))
        #    continue

        ans = s.answer

        answer_score = s.get_answer_score()
        if answer_score == "unmarked" or answer_score == None:
            index = case_list.index(q)
            unmarked.add(index)
        user_answers[cid].append(ans)
        user_answers_marks[cid].append(answer_score)
        user_answers_and_marks[cid].append((ans, answer_score))

        by_question[q][cid] = (ans, answer_score, s.feedback)

    user_scores = {}
    user_scores_normalised = {}
    for user in user_answers_marks:
        user_scores[user] = sum(
            [i for i in user_answers_marks[user] if (i != "unmarked" and i != None)]
        )

        user_scores_normalised[user] = user_scores[user]

    # ignore scores of 0 for stats
    user_scores_list = [i for i in user_scores.values() if i > 0]

    max_score = len(cases)

    if len(user_scores_list) < 1:
        mean = 0
        median = 0
        mode = 0
        fig_html = ""
    else:
        mean = statistics.mean(user_scores_list)
        median = statistics.median(user_scores_list)
        try:
            mode = statistics.mode(user_scores_list)
        except statistics.StatisticsError:
            mode = "No unique mode"

        df = user_scores_list
        fig = px.histogram(
            df,
            x=0,
            title="{}: distribution of scores".format(collection),
            labels={"0": "Score"},
            height=400,
            width=600,
        )
        fig_html = fig.to_html()

        collection.stats_mean = mean
        collection.stats_median = median
        collection.stats_mode = mode

        collection.stats_candidates = len(user_scores_list)
        collection.stats_max_possible = max_score

        collection.stats_min = min(user_scores_list)
        collection.stats_max = max(user_scores_list)

        # collection.stats_graph = fig_html

        collection.user_scores = user_scores

        collection.save()

    return render(
        request,
        f"atlas/collection_scores.html",
        {
            "cids": sorted(cids),
            # "cid_passcodes": cid_passcodes,
            "exam": collection,
            "collection": collection,
            "unmarked": unmarked,
            "questions": cases,
            "by_question": by_question,
            "user_answers": dict(user_answers),
            "user_answers_marks": dict(user_answers_marks),
            "user_scores": user_scores,
            "user_scores_normalised": user_scores_normalised,
            "user_scores_list": user_scores_list,
            "user_names": user_names,
            "user_answers_and_marks": user_answers_and_marks,
            "max_score": max_score,
            "mean": mean,
            "median": median,
            "mode": mode,
            "plot": fig_html,
        },
    )


GenericExamViews = ExamViews(
    CaseCollection, Case, None, CidReportAnswer, "atlas", "casecollection"
)


class CollectionCloneMixin:
    def get_initial(self):
        old_object = get_object_or_404(self.model, pk=self.kwargs["exam_id"])
        initial_data = model_to_dict(old_object, exclude=["id"])

        # We manually transfer the forign keys / m2m relationships
        questions = old_object.cases.all().values_list("id", flat=True)
        authors = old_object.author.all().values_list("id", flat=True)

        self.cases = list(questions)
        self.author = list(authors)

        return initial_data

    def form_valid(self, form):
        object = form.save()
        # Reapply these otherwise they get lost?
        object.cases.set(self.cases)
        object.author.set(self.author)
        object.save()
        return HttpResponseRedirect(object.get_absolute_url())


class CollectionClone(CollectionCloneMixin, CaseCollectionCreate):
    """Clone exam view"""


class SelfReviewDelete(DeleteView):
    model = SelfReview
    template_name = "confirm_delete.html"
    # success_url = reverse_lazy("atlas:finding_view")

    def get_initial(self):
        user_exam_id = self.kwargs["user_exam_id"]
        case_id = self.kwargs["case_id"]
        review_id = self.kwargs["pk"]

        self.user_exam = get_object_or_404(CidUserExam, pk=user_exam_id)
        self.case = get_object_or_404(Case, pk=case_id)
        self.review = get_object_or_404(SelfReview, pk=review_id)
        return {"user_exam": user_exam_id, "case": case_id, "review": review_id}

    def get_context_data(self, **kwargs):
        # This can also be accessed via view.**** in the template
        context = super(SelfReviewDelete, self).get_context_data(**kwargs)
        context["user_exam"] = self.user_exam
        context["case"] = self.case
        context["review"] = self.review
        return context

    def get_success_url(self) -> str:
        return self.user_exam.exam.get_case_take_url(self.case)


class SelfReviewUpdate(UpdateView):
    model = SelfReview
    form_class = SelfReviewForm

    def get_initial(self):
        user_exam_id = self.kwargs["user_exam_id"]
        case_id = self.kwargs["case_id"]
        review_id = self.kwargs["pk"]

        self.user_exam = get_object_or_404(CidUserExam, pk=user_exam_id)
        self.case = get_object_or_404(Case, pk=case_id)
        self.review = get_object_or_404(SelfReview, pk=review_id)
        return {"user_exam": user_exam_id, "case": case_id, "review": review_id}

    def get_context_data(self, **kwargs):
        # This can also be accessed via view.**** in the template
        context = super(SelfReviewUpdate, self).get_context_data(**kwargs)
        context["user_exam"] = self.user_exam
        context["case"] = self.case
        context["review"] = self.review
        return context

    def get_success_url(self) -> str:
        return self.user_exam.exam.get_case_take_url(self.case)

    # def get_object(self):
    #    return self.review
    #    return
    # def get_initial(self):
    #    user_exam_id = self.kwargs["user_exam_id"]
    #    case_id = self.kwargs["case_id"]

    #    self.user_exam = get_object_or_404(CidUserExam, pk=user_exam_id)
    #    self.case = get_object_or_404(Case, pk=case_id)
    #    return {"user_exam": user_exam_id, "case": case_id}


class AddSelfReview(CreateView):
    model = SelfReview
    form_class = SelfReviewForm

    # fields = ("author", "note_type", "note")

    def get_form_kwargs(self):
        kwargs = super(AddSelfReview, 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
        # kwargs.update({"user": self.request.user})
        return kwargs

    def get_initial(self):
        user_exam_id = self.kwargs["user_exam_id"]
        case_id = self.kwargs["case_id"]

        self.user_exam = get_object_or_404(CidUserExam, pk=user_exam_id)
        self.case = get_object_or_404(Case, pk=case_id)
        return {"user_exam": user_exam_id, "case": case_id}

    def get_context_data(self, **kwargs):
        # This can also be accessed via view.**** in the template
        context = super(AddSelfReview, self).get_context_data(**kwargs)
        context["user_exam"] = self.user_exam
        context["case"] = self.case
        return context

    def get_success_url(self) -> str:
        return self.user_exam.exam.get_case_take_url(self.case)
        # return reverse("atlas:collection_take_overview_user", kwargs={"pk": self.user_exam.collection.id })


#    def form_valid(self, form):
#        model = form.save(commit=False)
#
#        model.save()
#
#        response = super().form_valid(form)
#
#        return response


@login_required
def uncategorised_dicoms(request):
    dicoms = UncategorisedDicom.objects.filter(user=request.user)

    data = []
    for d in dicoms:
        data.append((d.image.name, d.get_basic_dicom_tags()))

    return JsonResponse(data, safe=False)