# -*- coding: utf-8 -*-
from django.shortcuts import  render_to_response
from django.http import HttpResponseRedirect, HttpResponse
from django.core.context_processors import csrf
from django.conf import settings
from django.forms.formsets import BaseFormSet, formset_factory
from django.forms.models import modelformset_factory
from django.contrib.contenttypes.models import ContentType
from django.contrib.auth.decorators import login_required
#
from models import Exposition, TimeTable
from forms import ExpositionChangeForm, ExpositionCreateForm,  TimeTableForm
from theme.models import Tag
from city.models import City
from file.models import FileModel, TmpFile
from file.forms import FileModelForm
#python
import random


@login_required
def exposition_add(request):
    """
    Returns form of exposition and post it on the server.

    If form is posted redirect on the page of all expositions.
    """
    #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 = ExpositionCreateForm(request.POST)
        #set choices filled by ajax
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.all()]
        form.fields['city'].choices = [(item.id, item.name) for item in City.objects.filter(country=request.POST['country'])]

        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/exposition/all/')
    else:
        form = ExpositionCreateForm(initial={'key': key})

    args = {}
    args.update(csrf(request))

    args['form'] = form
    args['file_form'] = file_form
    args['files'] = TmpFile.objects.filter(key=key)
    args['languages'] = settings.LANGUAGES
    return render_to_response('exposition_add.html', args)


@login_required
def exposition_change(request, url):
    """
    Return form of exposition and fill it with existing Exposition object data.

    If form of exposition is posted redirect on the page of all expositions.

    """
    try:
    #check if exposition_id exists else redirect to the list of expositions
        exposition = Exposition.objects.get(url=url)
        file_form = FileModelForm(initial={'model': 'exposition.Exposition'})
    except:
        return HttpResponseRedirect('/exposition/all/')

    if request.POST:
        form = ExpositionChangeForm(request.POST)
        #set choices filled by ajax
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.all()]
        form.fields['city'].choices = [(item.id, item.name) for item in City.objects.filter(country=request.POST['country'])]

        if form.is_valid():
            form.save(getattr(exposition, 'id'))
            return HttpResponseRedirect('/exposition/all/')
    else:
        #fill form with data from database
        data = {'web_page':exposition.web_page, 'foundation_year': exposition.foundation_year,
                'data_begin':exposition.data_begin, 'data_end':exposition.data_end, 'periodic':exposition.periodic,
                'audience':exposition.audience, 'min_area':exposition.min_area, 'currency':exposition.currency,
                'tax':exposition.tax, 'min_closed_area':exposition.min_closed_area,
                'max_closed_area':exposition.max_closed_area, 'min_closed_equipped_area':exposition.min_closed_equipped_area,
                'max_closed_equipped_area':exposition.max_closed_equipped_area,
                'min_open_area':exposition.min_open_area, 'max_open_area':exposition.max_open_area,
                'registration_payment':exposition.registration_payment}

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

        if exposition.city:
            data['city'] = exposition.city.id

        if exposition.place:
            data['place'] = exposition.place.id

        data['theme'] = [item.id for item in exposition.theme.all()]
        data['tag'] = [item.id for item in exposition.tag.all()]
        #data from translated fields
        for code, name in settings.LANGUAGES:
            obj = Exposition._meta.translations_model.objects.get(language_code = code,master__id=getattr(exposition, 'id')) #access to translated fields
            data['name_%s' % code] = obj.name
            data['description_%s' % code] = obj.description
            data['main_title_%s' % code] = obj.main_title
            data['time_%s' % code] = obj.time
            data['products_%s' % code] = obj.products
            data['title_%s' % code] = obj.title
            data['keywords_%s' % code] = obj.keywords
            data['descriptions_%s' % code] = obj.descriptions
        #initial form
        form = ExpositionChangeForm(initial=data)
        #set choices filled by ajax
        form.fields['city'].choices = [(item.id, item.name) for item in City.objects.filter(country=data['country'])]
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.filter(theme__in=data['theme'])]

    args = {}
    args.update(csrf(request))

    args['form'] = form
    args['languages'] = settings.LANGUAGES
    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(exposition),
                                             object_id=getattr(exposition, 'id'))
    args['obj_id'] = getattr(exposition, 'id')

    return render_to_response('exposition_add.html', args)


@login_required
def exposition_all(request):
    """
    Return list of all expositions
    """
    expositions = Exposition.objects.all()
    return render_to_response('exposition_all.html', {'expositions':expositions})