# -*- 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 Conference, TimeTable
from forms import ConferenceChangeForm, ConferenceCreateForm, 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 conference_add(request):
    """
    Returns form of conference and post it on the server.

    If form is posted redirect on the page of all conferences.
    """
    #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 = ConferenceCreateForm(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('/conference/all/')
    else:
        form = ConferenceCreateForm(initial={'key': key})

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

    args['form'] = form
    args['languages'] = settings.LANGUAGES
    args['file_form'] = file_form
    args['files'] = TmpFile.objects.filter(key=key)

    return render_to_response('conference_add.html', args)


@login_required
def conference_change(request, url):
    """
    Return form of conference and fill it with existing Conference object data.

    If form of conference is posted redirect on the page of all conferences.

    """
    try:
    #check if conference_id exists else redirect to the list of conferences
        conference = Conference.objects.get(url=url)
        file_form = FileModelForm(initial={'model': 'city.City'})
    except:
        return HttpResponseRedirect('/conference/all/')

    if request.POST:
        form = ConferenceChangeForm(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(conference, 'id'))
            return HttpResponseRedirect('/conference/all/')
    else:
        #fill form with data from database
        data = {'web_page':conference.web_page, 'foundation_year': conference.foundation_year,
                'data_begin':conference.data_begin, 'data_end':conference.data_end, 'currency':conference.currency,
                'tax':conference.tax, 'min_price':conference.min_price,
                'max_price':conference.max_price, 'link':conference.link}

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

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

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

        data['theme'] = [item.id for item in conference.theme.all()]
        data['tag'] = [item.id for item in conference.tag.all()]
        #data from translated fields
        for code, name in settings.LANGUAGES:
            obj = Conference._meta.translations_model.objects.get(language_code = code,master__id=getattr(conference, '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['main_themes_%s' % code] = obj.main_themes
            data['discount_%s' % code] = obj.discount
            data['title_%s' % code] = obj.title
            data['keywords_%s' % code] = obj.keywords
            data['descriptions_%s' % code] = obj.descriptions
        #initial form
        form = ConferenceChangeForm(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(conference), object_id=getattr(conference, 'id'))
    args['obj_id'] = getattr(conference, 'id')

    return render_to_response('conference_add.html', args)


@login_required
def conference_all(request):
    """
    Return list of all conferences
    """
    conferences = Conference.objects.all()
    return render_to_response('conference_all.html', {'conferences':conferences})