function controller()
{
    drawLoginPage();
    document.getElementById("enter").onclick = function()
    {
        const USER = document.getElementById("username").value;
        const PASSWORD = document.getElementById("password").value;
        if (USER == '' || PASSWORD == '')
                alert("Wrong login or password");
        else {
                window.localStorage.removeItem('userIsFind');
                findTheUser(USER, PASSWORD);
                let FindUser = localStorage['userIsFind'] || "false";
                if (FindUser == "true")
                {
                    document.getElementById("loginFormId").remove();
                    createStorePageForUser(Log);
                }
                else alert("Wrong login or password");
            }
    }
}

function findTheUser(Log, Pas)
{
    fetch("Users.json")
    .then(function(response)
    {
        return response.json();
    })
        .then(function(data)
        {
            let currentUser = 0;
            while ( currentUser < data.length && (data[currentUser].username !=  Log && data[currentUser].password !=  Pas  ))  currentUser++;
            localStorage['userIsFind'] = String(currentUser != data.length);
        });
}