# -*- coding: utf-8 -*-
from django.contrib.syndication.views import Feed
from django.shortcuts import get_object_or_404
from django.db import models

from exposition.models import Exposition
from settings.models import create_transl_fields
from theme.models import Theme
from country.models import Country
from city.models import City

from hvad.models import TranslatableModel, TranslatedFields

# ----------------------- RSS -------------------------- #

EXPO_ON_PAGE = 10

# nearest expositions at all

class LatestExpositions(Feed):
    title = u"Ближайшие выставки на expomap.ru"
    link = '/rss/latest/'
    description = u'Подписывайтесь на наш RSS-канал'

    def items(self):
        return Exposition.enable.upcoming()[:EXPO_ON_PAGE]

    def item_title(self, item):
        return item.name

    def item_description(self, item):
        return item.main_title

    def item_link(self, item):
        return '/expo/%s/'%item.url

NUM_ITEMS_ON_PAGE = 20


class CountryFeeds(Feed):
    description_template = '/rss/country_feeds/'

    def get_object(self, request, slug):
        return get_object_or_404(Country, url=slug)

    def title(self, obj):
        return u"Ближайшие выставки %s:" % obj.inflect

    def link(self,obj):
        return obj.get_permanent_url()

    def item_description(self, obj):
        return obj.main_title

    def items(self, obj):
        return Exposition.enable.upcoming().filter(country=obj)[:NUM_ITEMS_ON_PAGE]


class CityFeeds(Feed):
    description_template = '/rss/city_feeds/'

    def get_object(self, request, slug):
        return get_object_or_404(City, url=slug)

    def title(self, obj):
        return u"Ближайшие выставки в %s: " % obj.inflect

    def link(self,obj):
        return obj.get_permanent_url()

    def item_description(self, obj):
        return obj.main_title

    def items(self, obj):
        return Exposition.enable.upcoming().filter(city = obj)[:NUM_ITEMS_ON_PAGE]


class ThemeFeeds(Feed):
    description_template = '/rss/theme_feeds/'

    def get_object(self, request, slug):
        return get_object_or_404(Theme, url=slug)

    def title(self, obj):
        return u"Ближайшие выставки %s: " % obj.inflect

    def link(self,obj):
        return obj.url

    def item_description(self, obj):
        return obj.main_title

    def items(self, obj):
        return Exposition.enable.upcoming().filter(theme = obj)[:NUM_ITEMS_ON_PAGE]

# ------------------------ Page model --------------------------- #
from django.conf import settings
from django.core.urlresolvers import reverse

class Page(TranslatableModel):

    url = models.SlugField(unique=True)
    translations = TranslatedFields(
        h1 = models.CharField(max_length=255),
        body = models.TextField(),
        # meta
        title = models.CharField(max_length=255, blank=True),
        descriptions = models.CharField(max_length=255, blank=True),
        keywords = models.CharField(max_length=255, blank=True),
    )
    created = models.DateTimeField(auto_now_add=True)
    modified = models.DateTimeField(auto_now=True)

    def get_absolute_url(self):
        return reverse('page_view', args=[self.url])

    def save(self, *args, **kwargs):
        super(Page,self).save(*args, **kwargs)

        all_field_names = list(self._translated_field_names)
        clear_f_n = []
        for field_name in all_field_names:
            if field_name not in ['master', 'master_id',u'id', 'language_code']:
                clear_f_n.append(field_name)
        field_items = {field_name:getattr(self, field_name) for field_name in clear_f_n}

        langs = [lan[0] for lan in settings.LANGUAGES]
        for lang in langs:
            if lang not in self.get_available_languages():
                self.translate(lang)
                for field in clear_f_n:
                    setattr(self, field, field_items.get(field, ''))
        super(Page,self).save(*args, **kwargs)
        return self

    def __unicode__(self):
        return self.url