from django.contrib.auth import get_user_model
from django.http import HttpResponseRedirect
from django.urls import reverse_lazy
from django.views.generic import DeleteView, FormView, UpdateView, CreateView

from ctrack.caf.models import CAF
from ctrack.organisations.models import Organisation
from ctrack.register.forms import (
    CreateSimpleDateTimeEventForm,
    EngagementEventCreateForm, CreateNoteEventForm, CAFSingleDateEventForm,
)
from ctrack.register.models import EngagementEvent, SingleDateTimeEvent, NoteEvent, CAFSingleDateEvent


class EngagementEventDelete(DeleteView):
    model = EngagementEvent

    def get_success_url(self):
        return reverse_lazy("organisations:detail", args=[self.kwargs["slug"]])


class EngagementEventCreate(FormView):
    fields = "__all__"
    form_class = EngagementEventCreateForm
    template_name = "register/engagementevent_form.html"

    # success_url = reverse_lazy("organisations:list")

    def form_valid(self, form):
        ee = form.save(commit=False)
        ee.user = self.request.user
        form.save()
        return HttpResponseRedirect(self.get_success_url())

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["org_slug"] = self.kwargs["slug"]
        kwargs["user"] = get_user_model()
        return kwargs

    def get_context_data(self, **kwargs):
        context = super().get_context_data()
        context["org"] = Organisation.objects.get(slug=self.kwargs["slug"])
        return context

    def get_success_url(self):
        return reverse_lazy("organisations:detail", args=[self.kwargs["slug"]])


class EngagementEventCreateFromCaf(FormView):
    fields = "__all__"
    form_class = EngagementEventCreateForm
    template_name = "snippets/event_form_base.html"

    def form_valid(self, form):
        ee = form.save(commit=False)
        ee.user = self.request.user
        form.save()
        return HttpResponseRedirect(self.get_success_url())

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["org_slug"] = self.kwargs.get("slug")
        kwargs["user"] = get_user_model()
        kwargs["caf"] = self.kwargs.get("caf_id")
        return kwargs

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

    def get_success_url(self):
        org_slug = CAF.objects.get(pk=self.kwargs["caf_id"]).organisation.slug
        return reverse_lazy("organisations:detail", args=[org_slug])


class CreateNoteEvent(CreateView):
    form_class = CreateNoteEventForm
    model = NoteEvent
    template_name = "register/create_note_event_form.html"

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["user"] = self.request.user
        return kwargs

    def form_valid(self, form):
        note = form.save(commit=False)
        note.user = self.request.user
        note.save()
        return super().form_valid(form)

    def get_success_url(self):
        return reverse_lazy("organisations:detail", args=[self.object.organisation.slug])


class CreateNoteEventFromOrg(CreateView):
    form_class = CreateNoteEventForm
    model = NoteEvent
    template_name = "register/create_note_event_form.html"

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["user"] = self.request.user
        kwargs["org_slug"] = self.kwargs.get("org_slug")
        return kwargs

    def form_valid(self, form):
        note = form.save(commit=False)
        note.user = self.request.user
        note.save()
        return super().form_valid(form)


class SingleDateTimeEventUpdate(UpdateView):
    model = SingleDateTimeEvent
    fields = [
        "type_descriptor",
        "short_description",
        "date",
        "private",
        "document_link",
        "comments",
        "participants",
        "requested_response_date",
        "response_received_date",
    ]
    template_name_suffix = "_update_form"
    success_url = reverse_lazy("organisations:list")

    def get_success_url(self):
        # We might not have org_slug if we are not setting this from an org detail page
        try:
            self.success_url = reverse_lazy(
                "organisations:detail", args=[self.kwargs["org_slug"]]
            )
            return super().get_success_url()
        except KeyError:
            return super().get_success_url()


class SingleDateTimeEventCreate(FormView):
    template_name = "register/single_datetime_event_create.html"
    form_class = CreateSimpleDateTimeEventForm
    success_url = reverse_lazy("organisations:list")

    def get_success_url(self):
        # We might not have org_slug if we are not setting this from an org detail page
        try:
            self.success_url = reverse_lazy(
                "organisations:detail", args=[self.kwargs["org_slug"]]
            )
            return super().get_success_url()
        except KeyError:
            return super().get_success_url()

    def get_context_data(self, **kwargs):
        context = super().get_context_data()
        if self.kwargs.get("org_slug"):
            context["org"] = Organisation.objects.get(slug=self.kwargs["org_slug"])
            return context
        return context

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["user"] = self.request.user
        kwargs["org_slug"] = self.kwargs.get("org_slug")
        kwargs["event_type"] = self.kwargs.get("event_type")
        return kwargs

    def form_valid(self, form):
        form.save()
        return super().form_valid(form)


class CAFCreateSingleDateEventView(FormView):
    template_name = "register/caf_single_date_event_form.html"
    form_class = CAFSingleDateEventForm
    success_url = reverse_lazy("caf:detail")

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs["user"] = self.request.user
        kwargs["caf_id"] = self.kwargs.get("caf_id")
        return kwargs

    def form_valid(self, form):
        form.save()
        return super().form_valid(form)

    def get_success_url(self):
        self.success_url = reverse_lazy("caf:detail", args=[self.kwargs.get("caf_id")])
        return super().get_success_url()

    def get_context_data(self, **kwargs):
        context = super().get_context_data()
        context["caf"] = CAF.objects.get(id=self.kwargs.get("caf_id"))
        return context