from django import forms
from django.utils.translation import get_language


class AddClassMixin:
    """
    Mixin for adding classes to a model.
    """
    def add_class_to_fields(self):
        """
        Adds the class to the fields of the model.
        :return: class names form-control or form-select
        """
        for field_name, field in self.fields.items():
            if isinstance(field.widget, forms.Select):
                existing_classes = field.widget.attrs.get('class', '')
                field.widget.attrs['class'] = f"{existing_classes} form-select form-select-sm".strip()
            else:
                existing_classes = field.widget.attrs.get('class', '')
                field.widget.attrs['class'] = f"{existing_classes} form-control form-control-sm".strip()


class LocalizedNameMixin:
    """
    Mixin to provide a reusable get_localized_name method.
    """
    def get_local_name(self):
        """
        Returns the localized name based on the current language.
        """
        if get_language() == 'ar':
            return getattr(self, 'arabic_name', None)
        return getattr(self, 'name', None)


class AddDealerInstanceMixin:
    def form_valid(self, form):
        if form.is_valid():
            form.instance.dealer = self.request.user.dealer.get_root_dealer
            form.save()
            return super().form_valid(form)
        else:
            return form.errors