# -*- coding: utf-8 -*-
from settings.models import settings_dict, Setting


from django.conf import settings
from functions.translate import get_translated_fields

def fill_missing_languages(obj):
    """
    looking for missing languages
    and fill translated fields with first available language

    uses in post_save signal
    """

    # what languages must be
    all_langs = [code for code, lang in settings.LANGUAGES]
    # what languages are
    obj_langs = obj.get_available_languages()
    missing_languages = list(set(all_langs) - set(obj_langs))
    # get first Translation object
    translation = obj.translations.all()[0]

    fields = get_translated_fields(obj)

    for code in missing_languages:
        # translate
        obj.translate(code)
        # go through all fields and set value
        for field in fields:
            setattr(obj, field, getattr(translation, field))

        obj.save()

def fill_meta_information(obj):
    """
    looking for available settings for this object
    and fill empty field with settings rules
    """
    # return list of settings for this object
    s_list = settings_dict.get(obj.__class__.__name__)
    if s_list:

        for s in s_list:
            # get Setting model object
            setting = Setting.objects.get(key=s.get('key'))
            field = s.get('field_name')

            if setting.type != 'transl':
                # simple field
                if getattr(obj, field)=="":
                    setattr(obj, field, setting.get_value())
                    obj.save()
            else:
                # translated field
                for code, lang in settings.LANGUAGES:
                    # get translation object
                    tr = obj._meta.translations_model.objects.get(language_code=code, master__id=getattr(obj, 'id'))

                    if getattr(tr, field)=="":
                        value = setting.get_value(code)
                        try:
                            value = value%tr.__dict__
                        except KeyError:
                            pass
                        # ! charfield -> textfield
                        setattr(tr, field, value[:250])
                        tr.save()