---

from django.shortcuts import render
from django.http import (
    HttpResponse,
    HttpResponseRedirect,
    HttpResponsePermanentRedirect,
    HttpResponseNotModified,
    HttpResponseBadRequest,
    HttpResponseForbidden,
    HttpResponseNotFound,
    HttpResponseNotAllowed,
    HttpResponseGone,
    HttpResponseServerError,
)

# ---------- Обычные страницы ----------
def index(request):
    return HttpResponse("<h2>Главная</h2>")

def about(request):
    return HttpResponse("<h2>О сайте</h2>")

def contact(request):
    return HttpResponse("<h2>Контакты</h2>")

# ---------- Параметры строки запроса ----------
def products(request, productid):
    category = request.GET.get("cat", "")
    output = "<h2>Продукт № {0} Категория: {1}</h2>".format(productid, category)
    return HttpResponse(output)

def users(request):
    id = request.GET.get("id", 1)
    name = request.GET.get("name", "Максим")
    output = "<h2>Пользователь</h2><h3>id: {0} Имя: {1}</h3>".format(id, name)
    return HttpResponse(output)

# ---------- Переадресация ----------
def contact_redirect(request):
    return HttpResponseRedirect("/about/")          # 302 (временная)

def details(request):
    return HttpResponsePermanentRedirect("/")       # 301 (постоянная)

# ---------- Статусные коды ----------
def m304(request):
    return HttpResponseNotModified()

def m400(request):
    return HttpResponseBadRequest("<h2>Bad Request</h2>")

def m403(request):
    return HttpResponseForbidden("<h2>Forbidden</h2>")

def m404(request):
    return HttpResponseNotFound("<h2>Not Found</h2>")

def m405(request):
    return HttpResponseNotAllowed("<h2>Method is not allowed</h2>")

def m410(request):
    return HttpResponseGone("<h2>Content is no longer here</h2>")

def m500(request):
    return HttpResponseServerError("<h2>Something is wrong</h2>")