# -*- coding: utf-8 -*-
import json

from django.http import HttpResponseBadRequest, HttpResponse
from django.views.decorators.http import require_POST, require_GET
from django.views.decorators.csrf import csrf_protect
from django.template.loader import render_to_string
from django.core.mail import send_mail

from django.conf import settings

from .models import ReqAvail
from .forms import ReqAvailForm

CALLBACK_SETTINGS = getattr(settings, 'CALLBACK_SETTINGS')


@require_POST
@csrf_protect
def req_avail(request, id=None):
    """Отправить сообщение или обработать запрос наличия товара на складе - AJAX."""
    if not request.is_ajax():
        return HttpResponseBadRequest()

    if id:
        good = get_object_or_404(CatalogItem, pk=id)
    else:
        good = None
    form = ReqAvailForm(data=request.POST)

    if form.is_valid():
        if request.user.is_authenticated():
            user = request.user
        else:
            user = None
        req = ReqAvail.objects.create(
            name=form.cleaned_data['name'].strip(),
            phone=form.cleaned_data['phone'].strip(),
            user=user,
            #good=good,
        )

        # отправить письма менеджерам
        subject = CALLBACK_SETTINGS['NEW_REQ_AVAIL_EMAIL_SUBJ']
        sender = CALLBACK_SETTINGS['EMAIL_SENDER']
        recipients = CALLBACK_SETTINGS['MANAGERS_EMAILS']
        message = render_to_string('callback/req_avail_new.txt', {'req': req, })
        send_mail(subject, message, sender, recipients)

    data = {
        'success': form.is_valid(),
#        'field_errors': form.errors,  #  ошибки полей
        'form_errors': form.non_field_errors(),  # ошибки формы
    }
    if form.is_valid():
        data['message'] = {
            'title': u'Сообщение',
            'msg': u'Ваша Сообщение отправлено!<br />Скоро с Вами свяжется наш менеджер.',
        }
    return HttpResponse(json.dumps(data), mimetype='application/json')