from django import forms
from django.urls import reverse_lazy
from django.views.generic import DetailView, ListView, UpdateView

from backoffice.mixins import BackofficeCRUDMixin, BackofficeHtmxMixin
from shop.models import Order

SECTION = 'orders'


class ShippingStatusForm(forms.ModelForm):
    class Meta:
        model = Order
        fields = ('shipping_status',)
        widgets = {'shipping_status': forms.Select(attrs={'class': 'select select-bordered w-full'})}


class OrderListView(BackofficeCRUDMixin, BackofficeHtmxMixin, ListView):
    model = Order
    permission_required = 'shop.view_order'
    section = SECTION
    paginate_by = 20
    template_name = 'backoffice/generic/list.html'
    fragment_template_name = 'backoffice/generic/_list_fragment.html'

    def get_queryset(self):
        queryset = super().get_queryset()
        status = self.request.GET.get('status')

        if status:
            queryset = queryset.filter(status=status)

        return queryset

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context.update(
            {
                'title': 'Pedidos',
                'columns': [('Código', 'code'), ('Cliente', 'email'), ('Estado', 'get_status_display'), ('Total', 'total')],
                'detail_url_name': 'backoffice:order_detail',
            }
        )
        return context


class OrderDetailView(BackofficeCRUDMixin, DetailView):
    model = Order
    permission_required = 'shop.view_order'
    section = SECTION
    template_name = 'backoffice/orders/order_detail.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context.update(
            {
                'lines': self.object.lines.all(),
                'payments': self.object.payments.all(),
                'shipping_status_form': ShippingStatusForm(instance=self.object),
            }
        )
        return context


class OrderUpdateShippingStatusView(BackofficeCRUDMixin, UpdateView):
    model = Order
    form_class = ShippingStatusForm
    permission_required = 'shop.change_order'
    section = SECTION

    def get_success_url(self):
        return reverse_lazy('backoffice:order_detail', args=[self.object.pk])

    def form_invalid(self, form):
        return self.render_to_response(self.get_context_data(shipping_status_form=form))

    def get_template_names(self):
        return ['backoffice/orders/order_detail.html']

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context.update({'lines': self.object.lines.all(), 'payments': self.object.payments.all()})
        context.setdefault('shipping_status_form', ShippingStatusForm(instance=self.object))
        return context