function register(user) {

    data = {
        action: 'register',
        username: $('input[name="username"]').val(),
        password: $('input[name="password"]').val(),
        firstname: $('input[name="firstname"]').val(),
        lastname: $('input[name="lastname"]').val(),
        email: $('input[name="email"]').val(),
        phonenumber: $('input[name="phonenumber"]').val()
    };

    if (user === 'buyer') {
        data.address = $('input[name="address"]').val();
    }

    $.ajax({
        type: "POST",
        url: user,
        data: data,
        success: function (response) {
            console.log(response);
            registrationCallback(JSON.parse(response));
        }
    });
}

function login(user) {

    data = {
        action: 'login',
        username: $('input[name="username"]').val(),
        password: $('input[name="password"]').val()
    };

    $.ajax({
        type: "POST",
        url: user,
        data: data,
        success: function (response) {
            loginCallback(JSON.parse(response));
        }
    });
}

function loginCallback(response) {

    if (response.code === '200') {
        window.location = '/ECoupon/' + response.data.url;
    } else {
        errorMessage(response.errors);
    }
}

function registrationCallback(response) {
    if (response.code == '201') {

        if (response.data.type === 'seller') {
            return;
        }

        window.location = '/ECoupon/' + response.data.url;
    } else {
        errorMessage(reponse.errors);
    }
}