from django import forms
from django.utils.translation import ugettext_lazy as _

from fobi.base import BaseFormFieldPluginForm, get_theme
from fobi.helpers import validate_initial_for_choices

theme = get_theme(request=None, as_instance=True)

__all__ = ('RadioInputForm',)


class RadioInputForm(forms.Form, BaseFormFieldPluginForm):
    """Form for ``RadioInputPlugin``."""

    plugin_data_fields = [
        ("label", ""),
        ("name", ""),
        ("choices", ""),
        ("help_text", ""),
        ("initial", ""),
        ("required", False)
    ]

    label = forms.CharField(
        label=_("Label"),
        required=True,
        widget=forms.widgets.TextInput(
            attrs={'class': theme.form_element_html_class}
        )
    )
    name = forms.CharField(
        label=_("Name"),
        required=True,
        widget=forms.widgets.TextInput(
            attrs={'class': theme.form_element_html_class}
        )
    )
    choices = forms.CharField(
        label=_("Choices"),
        required=False,
        help_text=_("Enter single values/pairs per line. Example:<code><br/>"
                    "&nbsp;&nbsp;&nbsp;&nbsp;1<br/>"
                    "&nbsp;&nbsp;&nbsp;&nbsp;2<br/>"
                    "&nbsp;&nbsp;&nbsp;&nbsp;alpha, Alpha<br/>"
                    "&nbsp;&nbsp;&nbsp;&nbsp;beta, Beta<br/>"
                    "&nbsp;&nbsp;&nbsp;&nbsp;omega"
                    "</code><br/>"
                    "It finally transforms into the following HTML code:"
                    "<code><br/>"
                    '&nbsp;&nbsp;&nbsp;&nbsp;&lt;select '
                    'id="id_NAME_OF_THE_ELEMENT" '
                    'name="NAME_OF_THE_ELEMENT"&gt;<br/>'
                    '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'
                    '&lt;option value="1"&gt;1&lt;/option&gt;<br/>'
                    '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'
                    '&lt;option value="2"&gt;2&lt;/option&gt;<br/>'
                    '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'
                    '&lt;option value="alpha"&gt;Alpha&lt;/option&gt;<br/>'
                    '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'
                    '&lt;option value="beta"&gt;Beta&lt;/option&gt;<br/>'
                    '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'
                    '&lt;option value="omega"&gt;omega&lt;/option&gt;<br/>'
                    '&nbsp;&nbsp;&nbsp;&nbsp;&lt;/select&gt;'
                    "</code>"),
        widget=forms.widgets.Textarea(
            attrs={'class': theme.form_element_html_class}
        )
    )
    help_text = forms.CharField(
        label=_("Help text"),
        required=False,
        widget=forms.widgets.Textarea(
            attrs={'class': theme.form_element_html_class}
        )
    )
    initial = forms.CharField(
        label=_("Initial"),
        required=False,
        widget=forms.widgets.TextInput(
            attrs={'class': theme.form_element_html_class}
        )
    )
    required = forms.BooleanField(
        label=_("Required"),
        required=False,
        widget=forms.widgets.CheckboxInput(
            attrs={'class': theme.form_element_checkbox_html_class}
        )
    )

    def clean_initial(self):
        """Validating the initial value."""
        return validate_initial_for_choices(self, 'choices', 'initial')