from django import forms
from django.utils.safestring import mark_safe
from django.conf import settings
from faireweb.recaptcha import captcha

class ReCaptcha(forms.widgets.Widget):
    recaptcha_challenge_name = 'recaptcha_challenge_field'
    recaptcha_response_name = 'recaptcha_response_field'

    def render(self, name, value, attrs=None):
        use_ssl = False
        use_custom_theme = False
        if 'RECAPTCHA_USE_SSL' in settings.__members__:
            use_ssl = settings.RECAPTCHA_USE_SSL
        if 'RECAPTCHA_USE_CUSTOM_THEME' in settings.__members__:
            use_custom_theme = settings.RECAPTCHA_USE_CUSTOM_THEME
        return mark_safe(u'%s' %
                         captcha.displayhtml(settings.RECAPTCHA_PUBLIC_KEY,
                                             use_ssl=use_ssl,
                                             use_custom_theme=settings.RECAPTCHA_USE_CUSTOM_THEME))

    def value_from_datadict(self, data, files, name):
        return [data.get(self.recaptcha_challenge_name, None),
            data.get(self.recaptcha_response_name, None)]