from django.conf import settings
from django.contrib.auth.decorators import login_required
from django.urls import resolve, reverse_lazy
from django.utils.decorators import method_decorator
from django.views.generic import CreateView, DetailView, ListView, UpdateView
from oauth2_provider.models import get_application_model

from apps.gooyal_oauth2.filters import ApplicationFilter, ScopeFilter
from apps.gooyal_oauth2.forms import ApplicationCreateForm, ApplicationUpdateForm, ApplicationScopeCreateForm
from apps.gooyal_oauth2.models import Application, Scope
from utils.views import FilterMixin


@method_decorator(login_required, name='dispatch')
class ApplicationCreateView(CreateView):
    template_name = "gooyal_oauth2/application_create.html"
    form_class = ApplicationCreateForm

    def get_success_url(self):
        return reverse_lazy("gooyal_oauth2:application_detail", kwargs={"pk": self.object.pk})

    def form_valid(self, form):
        form.instance.user = self.request.user
        form.instance.client_type = Application.CLIENT_PUBLIC
        form.instance.algorithm = Application.RS256_ALGORITHM
        form.instance.hash_client_secret = False
        form.instance.authorization_grant_type = Application.GRANT_AUTHORIZATION_CODE
        return super().form_valid(form)


@method_decorator(login_required, name='dispatch')
class ApplicationUpdateView(UpdateView):
    template_name = "gooyal_oauth2/application_update.html"
    form_class = ApplicationUpdateForm

    def get_queryset(self):
        return Application.objects.filter(user=self.request.user)

    def get_success_url(self):
        return reverse_lazy("gooyal_oauth2:application_detail", kwargs={"pk": self.object.pk})

    def form_valid(self, form):
        # form.instance.user = self.request.user
        # form.instance.client_type = Application.CLIENT_PUBLIC
        return super().form_valid(form)


@method_decorator(login_required, name='dispatch')
class ApplicationDetailView(DetailView):
    model = Application
    template_name = "gooyal_oauth2/application_detail.html"

    def get_queryset(self):
        return Application.objects.filter(user=self.request.user)


@method_decorator(login_required, name='dispatch')
class ApplicationListView(FilterMixin, ListView):
    model = Application
    template_name = "gooyal_oauth2/application_list.html"
    paginate_by = settings.PAGE_SIZE
    filterset_class = ApplicationFilter

    def get_ordering(self):
        ordering = self.request.GET.get('ordering', 'name')
        return ordering

    def get_queryset(self):
        qs = super().get_queryset()
        return qs.filter(user=self.request.user)


class ApplicationScopeMixin:
    application = None

    def get_application(self):
        if not self.application:
            application_pk = self.kwargs['application_pk']
            application = Application.objects.get(pk=application_pk, user=self.request.user)
            self.application = application

        return self.application

    def get_context_data(self, **kwargs):
        application = self.get_application()

        context_data = super().get_context_data(**kwargs)
        context_data['application'] = application
        return context_data


@method_decorator(login_required, name='dispatch')
class ApplicationScopeListView(ApplicationScopeMixin, FilterMixin, ListView):
    model = Scope
    template_name = "gooyal_oauth2/application_scope_list.html"
    paginate_by = settings.PAGE_SIZE
    filterset_class = ScopeFilter

    def get_ordering(self):
        ordering = self.request.GET.get('ordering', 'name')
        return ordering

    def get_queryset(self):
        qs = super().get_queryset()
        application = self.get_application()
        return qs.filter(application__user=self.request.user, application=application)


@method_decorator(login_required, name='dispatch')
class ApplicationScopeCreateView(ApplicationScopeMixin, CreateView):
    template_name = "gooyal_oauth2/application_scope_create.html"
    form_class = ApplicationScopeCreateForm
    model = Scope

    def get_queryset(self):
        qs = super().get_queryset()
        application = self.get_application()
        return qs.filter(application__user=self.request.user, application=application)

    def get_success_url(self):
        return reverse_lazy("gooyal_oauth2:application_scope_detail", kwargs={"pk": self.object.pk, "application_pk": self.get_application().pk})

    def form_valid(self, form):
        form.instance.application = self.get_application()
        return super().form_valid(form)


@method_decorator(login_required, name='dispatch')
class ApplicationScopeDetailView(ApplicationScopeMixin, DetailView):
    model = Scope
    template_name = "gooyal_oauth2/application_scope_detail.html"

    def get_queryset(self):
        application = self.get_application()
        return Scope.objects.filter(application=application)


@method_decorator(login_required, name='dispatch')
class ApplicationScopeUpdateView(ApplicationScopeMixin, UpdateView):
    template_name = "gooyal_oauth2/application_scope_update.html"
    form_class = ApplicationScopeCreateForm
    model = Scope

    def get_queryset(self):
        qs = super().get_queryset()
        application = self.get_application()
        return qs.filter(application__user=self.request.user, application=application)

    def get_success_url(self):
        return reverse_lazy("gooyal_oauth2:application_scope_detail", kwargs={"pk": self.object.pk, "application_pk": self.get_application().pk})

    def form_valid(self, form):
        # form.instance.user = self.request.user
        # form.instance.client_type = Application.CLIENT_PUBLIC
        return super().form_valid(form)