@csrf_exempt
def loginFunction(request):
    with open('login.json', 'r', encoding='utf-8') as file:
        login = json.load(file)
    with open('data_json.json', 'r', encoding='utf-8') as file:
        data_json = json.load(file)
    new_obj = {}
    page = "loginPage.html"
    request.session["function"] = None
    req = request.POST
    request.session["login"] = req.get("login")
    request.session["password"] = req.get('password')
    for i in login["data"]:
        if i["login"] == request.session["login"] and i["password"] == request.session["password"]:
            request.session["function"] = i["function"]
            break
    if request.session["function"] != None:
        if request.session["function"] == "user":
            new_obj = {"cinemas": data_json['cinemas']}
            page = 'mainPage.html'
        elif request.session["function"] == "manager":
            page = 'manager.html'
        elif request.session["function"] == "admin":
            page = 'admin.html'
    return render(request, page, new_obj)