from typing import Any, Dict

from django.contrib.auth.mixins import LoginRequiredMixin, PermissionRequiredMixin
from django.db import transaction
from django.http import HttpResponseRedirect
from django.urls import reverse, reverse_lazy
from django.views.generic import CreateView, DetailView, FormView, ListView

from ctrack.register.models import EngagementEvent

from .forms import AddressInlineFormSet, IncidentReportForm, OrganisationCreateForm
from .models import IncidentReport, Organisation, Person
from ctrack.caf.models import EssentialService


class PersonListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
    model = Person
    template_name = "organisations/person_list.html"
    permission_required = "organisations.view_person"


class OrganisationCreate(LoginRequiredMixin, PermissionRequiredMixin, CreateView):
    model = Organisation
    template_name = "organisations/org_create_formset.html"
    form_class = OrganisationCreateForm
    permission_required = "organisations.add_organisation"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        if self.request.POST:
            context["addresses"] = AddressInlineFormSet(self.request.POST)
        else:
            context["addresses"] = AddressInlineFormSet()
        return context

    def form_valid(self, form):
        context = self.get_context_data()
        addresses = context["addresses"]
        with transaction.atomic():
            #            form.instance.updated_by = self.request.user REMOVED updated_by
            self.object = form.save()
            if addresses.is_valid():
                addresses.instance = self.object
                addresses.save()
        return super().form_valid(form)

    def get_success_url(self):
        return reverse_lazy("organisations:detail", kwargs={"slug": self.object.slug})


class OrganisationListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
    model = Organisation
    permission_required = "organisations.view_organisation"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context["organisation_list"] = Organisation.objects.all().order_by("name")
        return context


class OrganisationDetailView(LoginRequiredMixin, PermissionRequiredMixin, DetailView):
    model = Organisation
    permission_required = "organisations.view_organisation"

    def get_context_data(self, **kwargs: Any):
        context = super().get_context_data()
        org = kwargs["object"]
        peoples = org.person_set.all()
        engagement_events = EngagementEvent.objects.filter(participants__in=peoples)
        essential_services = EssentialService.objects.filter(organisation=org)
        no_addr = org.addresses.count()
        if no_addr > 1:
            context["no_addr"] = no_addr
            addr = org.addresses.all()
            context["addr"] = addr
        else:
            context["no_addr"] = 1
            addr = org.addresses.first()
            context["addr"] = addr
        people = org.person_set.all()
        context["people"] = people
        applicable_systems = org.systems_for_each_essential_service()
        context["applicable_systems"] = applicable_systems
        context["engagement_events"] = engagement_events
        context["essential_services"] = essential_services
        return context


class IncidentReportCreateView(LoginRequiredMixin, FormView):
    model = IncidentReport
    form_class = IncidentReportForm
    template_name = "organisations/incidentreport_form.html"
    success_url = reverse_lazy("core:home")

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["org"] = self.request.user.stakeholder.person.organisation
        kwargs["reporting_person"] = self.request.user.stakeholder.person
        return kwargs

    def form_valid(self, form):
        form.save()
        return HttpResponseRedirect(reverse("core:home"))