UnversityEducation_Web_Django

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from django.http import HttpResponse, HttpResponseNotFound, Http404, HttpResponseRedirect, JsonResponse
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from django.shortcuts import render, redirect, get_object_or_404
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from django.views import View
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from django.contrib.auth.forms import UserCreationForm
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from django.contrib.auth import login as dj_login
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from django.contrib.auth import authenticate
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from django.urls import reverse_lazy
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from .models import *
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import datetime
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from django.core.exceptions import ObjectDoesNotExist
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from .forms import RegisterUserForm
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import random as rd
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import os
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menu = [{
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    'title': "О сайте",
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    'url_name': 'about'
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}, {
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    'title': "Обратная связь",
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    'url_name': 'feedback'
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}, {
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    'title': "Добавить продукт",
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    'url_name': 'add_page'
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}]
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def home(request):
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    products = list(Product.objects.all())
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    count_of_items = 4
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    items = []
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    for i in range(count_of_items):
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        items += [products[i]]
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    context = {
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        'menu': menu,
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        'title': 'Главная страница',
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        'items': items,
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        'request': request
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    }
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    return render(request, 'index.html', context=context)
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def about(request):
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    return render(request, 'about.html', {
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        'menu': menu,
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        'title': 'О сайте',
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        'request': request
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    })
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def login(request):
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    return render(request, 'registration/login.html', {
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        'menu': menu,
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        'title': 'Войти',
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        'request': request
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    })
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def addpage(request):
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    return render(request, 'addpage.html', {
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        'menu': menu,
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        'title': 'Добавить продукт',
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        'request': request
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    })
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# def register(request):
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#     return render(request, 'register.html', {'menu': menu,
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#                                             'request': request})
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def feedback(request):
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    return render(request, 'feedback.html', {
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        'menu': menu,
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        'title': 'Обратная связь',
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        'request': request
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    })
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def post(request):
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    posts = product.objects.all()
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    return render(request, 'post.html', {
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        'menu': menu,
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        'posts': posts,
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        'request': request
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    })
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def show_post(request, post_id):
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    post = get_object_or_404(Product, pk=post_id)
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    context = {
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        'menu': menu,
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        'post': post,
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        'title': post.title,
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        'request': request
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    }
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    return render(request, 'post.html', context=context)
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def user_page(request):
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    return render(request, 'user_page.html', {
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        'menu': menu,
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        'title': 'Ваша страница',
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        'request': request
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    })
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def card(request):
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    user = request.user
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    orders = Orders.objects.filter(user=user)
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    products = list(map(lambda x: x.product, orders))
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    counts = {products[i]: orders[i].count for i in range(len(products))}
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    return render(
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        request, 'card.html', {
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            'menu': menu,
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            'items': products,
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            'counts': counts,
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            'title': 'Ваша корзина',
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            'request': request
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        })
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def del_from_card(request, post_id):
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    if request.method == 'POST':
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        user = request.user
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        product = Product.objects.get(id=post_id)
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        current_count = product.count
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        current_ship = product.ship_date
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        try:
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            card = Orders.objects.get(user=user, product=product)
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            Orders.objects.filter(user=user, product=product).delete()
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            product.count += card.count
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            product.save()
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        except ObjectDoesNotExist:
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            pass
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        data = {'count': current_count,
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                   'can delete': False
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        }
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        return JsonResponse(data, safe=False)
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    return HttpResponseRedirect(reverse('card'))
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def add_to_card(request, post_id):
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    if request.method == 'POST':
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        user = request.user
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        product = Product.objects.get(id=post_id)
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        current_count = product.count
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        current_ship = product.ship_date
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        if current_count:
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            try:
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                card = Orders.objects.get(user=user, product=product)
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                print(card)
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                current_count -= 1
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                card.count += 1
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                card.save()
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            except ObjectDoesNotExist:
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                current_count -= 1
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                Orders(user=user,
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                       product=product,
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                       ship_date=current_ship,
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                       count=1).save()
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            product.count -= 1
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            product.save()
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            data = {'count': current_count,
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                   'can delete': True}
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            return JsonResponse(data, safe=False)
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    return HttpResponseRedirect(reverse('post', args=[post_id]))
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class Register_user(View):
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    form_class = RegisterUserForm()
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    template_name = 'registration/register.html'
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    def get(self, request):
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        context = {'form': self.form_class, 'menu': menu, 'request': request}
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        return render(request, self.template_name, context)
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    def post(self, request):
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        form_class = RegisterUserForm(request.POST)
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        print(form_class)
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        if form_class.is_valid():
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            form_class.save()
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            username = form_class.cleaned_data.get('username')
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            password = form_class.cleaned_data.get('password1')
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            user = authenticate(username=username, password=password)
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            dj_login(request, user)
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            return redirect('login')
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        context = {'form': form_class, 'menu': menu, 'request': request}
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        return render(request, self.template_name, context)
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