# -*- coding: utf-8 -*-
from django.shortcuts import  render_to_response, get_object_or_404
from django.http import HttpResponseRedirect
from django.core.context_processors import csrf
from django.conf import settings
from django.contrib.auth.decorators import login_required
from django.contrib.contenttypes.models import ContentType
from django.core.paginator import Paginator, PageNotAnInteger, EmptyPage
#models and forms
from forms import CityForm, CityChangeForm
from models import City
from file.models import FileModel, TmpFile
from file.forms import FileModelForm
#python
import random


@login_required
def city_all(request):
    """
    Return list of all cities with pagination
    """

    cities_list = City.objects.all()
    paginator = Paginator(cities_list, 2)#show 2 items per page
    page = request.GET.get('page')
    try:
        cities = paginator.page(page)
    except PageNotAnInteger:
    # If page is not an integer, deliver first page.
        cities = paginator.page(1)
    except EmptyPage:
    # If page is out of range (e.g. 9999), deliver last page of results.
        cities = paginator.page(paginator._num_pages)

    return render_to_response('city_all.html', {'cities' : cities})

@login_required
def city_add(request):
    """
    Return form of city and post it on the server.
    If form is posted redirect on the page of all cities.
    """
    #if form would be not valid key must be same
    if request.POST.get('key'):
        key = request.POST['key']
    else:
        key = random.getrandbits(128)

    file_form = FileModelForm(initial={'key': key})

    if request.POST:
        form = CityForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/city/all')
    else:
        form = CityForm(initial={'key': key})

    args = {}
    args.update(csrf(request))
    args['languages'] = settings.LANGUAGES
    args['form'] = form
    args['file_form'] = file_form
    args['files'] = TmpFile.objects.filter(key=key)

    return render_to_response('city_add.html', args)

@login_required
def city_change(request, url):
    """
    Return form and fill it with existing City object data.

    If form is posted redirect on the page of all cities.
    """
    try:
    #check if city_id exists else redirect to the list of cities
        c = City.objects.get(url=url)
        city_id = getattr(c, 'id')
        file_form = FileModelForm(initial={'model': 'city.City'})
    except:
        return HttpResponseRedirect('/city/all')

    if request.POST:
        form = CityChangeForm(request.POST)
        if form.is_valid():
            form.save(city_id)
            return HttpResponseRedirect('/city/all')
    else:
        #fill form with data from database
        data = {'population' : c.population,
                    'phone_code' : c.phone_code}

        if c.country:
            data['country'] = c.country.id

        if c.code_IATA:
            data['code_IATA'] = c.code_IATA.id

            #data from translated fields
        for code, name in settings.LANGUAGES:
            obj = City._meta.translations_model.objects.get(language_code = code,master__id=city_id) #access to translated fields
            data['name_%s' % code] = obj.name
            data['description_%s' % code] = obj.description
            data['famous_places_%s' % code] = obj.famous_places
            data['shoping_%s' % code] = obj.shoping
            data['transport_%s' % code] = obj.transport
            data['title_%s' % code] = obj.title
            data['keywords_%s' % code] = obj.keywords
            data['descriptions_%s' % code] = obj.descriptions
        #fill form
        form = CityChangeForm(initial=data)


    args = {}
    args.update(csrf(request))
    args['languages'] = settings.LANGUAGES
    args['form'] = form
    args['file_form'] = file_form

    #get list of files which connected with specific model object
    args['files'] = FileModel.objects.filter(content_type=ContentType.objects.get_for_model(c),
                                             object_id=getattr(c, 'id'))
    args['obj_id'] = city_id

    return render_to_response('city_add.html', args)