from django.shortcuts import render, get_list_or_404, get_object_or_404
from django.contrib import auth
from django.http import Http404
import json
import decimal

from django.views.generic import ListView

from cart.forms import CartAddProductForm
from .utils import *
from cart.cart import Cart
from .models import *


class ProductSearchView(ListView):
    model = Product
    template_name = 'products/search.html'

    def get_queryset(self):
        queryset = super().get_queryset()
        return queryset.filter(name__icontains=self.request)

# Uncomment for elasticsearch

# from .layout import FacetedProductSearchForm
# from haystack.generic_views import FacetedSearchView as BaseFacetedSearchView
# from haystack.query import SearchQuerySet

def serialize_decimal(obj):
    if isinstance(obj, decimal.Decimal):
        return str(obj)
    return json.JSONEncoder.default(obj)

def producerslist(request):
    username = auth.get_user(request).username
    # category = None
    # categories = ProductCategory.objects.filter(level__lte=0)
    # products = Product.objects.filter(is_active=True)
    producers = Producer.objects.filter(is_active=True)
    # if category_slug:
    #     category = get_object_or_404(ProductCategory, slug=category_slug)
    #     products = products.filter(category__in=category.get_descendants(include_self=True))
    return render(request, 'products/list.html', locals())

# def categorieslist(request, producer_slug, category_slug=None):
#     username = accounts_ext.get_user(request).username
#     producer = Producer.objects.get(slug=producer_slug)
#     if category_slug:
#         _categories = ProductCategory.objects.filter(is_active=True, parent=category_slug)
#     else:
#         _categories = ProductCategory.objects.filter(is_active=True, producer=producer, level__lte=0)
#     categories, products = expand_categories(_categories)
#     return render(request, 'products/categorieslist.html', {'username': username, 'categories':categories,
#                                                             'products': products})

def categorieslist(request, path, instance, producer_slug):
    username = auth.get_user(request).username
    if instance:
        _categories = instance.get_children()
    else:
        _categories = get_list_or_404(ProductCategory, producer__slug=producer_slug, level__lte=0)
    if _categories:
        categories, products = expand_categories(_categories)
    else:
        return productslist(request, producer_slug, instance.slug)
    return render(
        request,
        'products/categorieslist.html',
        {
            'username': username,
            'instance': instance,
            'categories': categories,
            'producer_slug': producer_slug,
            'products': products
        }
    )

def productslist(request, producer_slug, category_slug):
    username = auth.get_user(request).username
    category = ProductCategory.objects.get(slug=category_slug)
    products = Product.objects.filter(is_active=True, category=category)
    return render(request, 'products/productslist.html', locals())

def product(request, product_slug):
    username = auth.get_user(request).username
    product = get_object_or_404(Product, slug=product_slug, is_active=True)
    cart_product_form = CartAddProductForm()
    variant_picker_data = get_variant_picker_data(product)
    show_variant_picker = all([v.attributes for v in product.variants.all()])
    # session_key = request.session.session_key
    # if not session_key:
    #     request.session.cycle_key()

    return render(request, 'products/product.html', {'username': username, 'products': product, 'form': cart_product_form,
                                                     'show_variant_picker': show_variant_picker,
                                                     'variant_picker_data': variant_picker_data,
                                                     })

# Uncomment for elasticsearch

# def autocomplete(request):
#     sqs = SearchQuerySet().autocomplete(content_auto=request.GET.get('query', ''))[:5]
#     s = []
#     for result in sqs:
#         print(result)
#         d = {"value": result.name, "data": result.object.slug}
#         s.append(d)
#     output = {'suggestions': s}
#     return JsonResponse(output)
#
# class FacetedSearchView(BaseFacetedSearchView):
#     form_class = FacetedProductSearchForm
#     facet_fields = ['category', 'producer']
#     template_name = 'search/search.html'
#     paginate_by = 3
#     context_object_name = 'object_list'