from __future__ import absolute_import

from django import forms
from django.db import models

from .widgets import CKEditorWidget


class RichTextField(models.TextField):

    def __init__(self, *args, **kwargs):
        self.config_name = kwargs.pop("config_name", "default")
        self.extra_plugins = kwargs.pop("extra_plugins", [])
        self.external_plugin_resources = kwargs.pop("external_plugin_resources", [])
        super(RichTextField, self).__init__(*args, **kwargs)

    def formfield(self, **kwargs):
        defaults = {
            'form_class': self._get_form_class(),
            'config_name': self.config_name,
            'extra_plugins': self.extra_plugins,
            'external_plugin_resources': self.external_plugin_resources
        }
        defaults.update(kwargs)
        return super(RichTextField, self).formfield(**defaults)

    @staticmethod
    def _get_form_class():
        return RichTextFormField


class RichTextFormField(forms.fields.CharField):

    def __init__(self, config_name='default', extra_plugins=None, external_plugin_resources=None, *args, **kwargs):
        kwargs.update({'widget': CKEditorWidget(config_name=config_name, extra_plugins=extra_plugins,
                                                external_plugin_resources=external_plugin_resources)})
        super(RichTextFormField, self).__init__(*args, **kwargs)

try:
    from south.modelsinspector import add_introspection_rules
    add_introspection_rules([], ["^ckeditor\.fields\.RichTextField"])
except ImportError:
    pass