(function () {
    'use strict';
    const forms = document.querySelectorAll('.needs-validation');
    Array.prototype.slice.call(forms)
        .forEach(function (form) {
            form.addEventListener('submit', function (event) {
                if (!form.checkValidity()) {
                    event.preventDefault();
                    event.stopPropagation();
                }

                form.classList.add('was-validated');
            }, false);
        });
})();

$(function() {
    $("#form-validation").submit(function(event) {
        const userName = $("#userName").val();
        const email = $("#email").val();
        const password = $("#password").val();
        const address = $("#address").val();
        const address2 = $("#address2").val();
        const city = $("#city").val();
        const zipCode = $("#zipCode").val();

        const userNameRegex = /^[A-Za-z0-9]+$/;
        const emailRegex = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
        const passwordRegex = /^.{1,8}$/;
        const addressRegex = /^[A-Za-z0-9\s,-]+/;
        const addressRegex2 = /^[A-Za-z0-9\s,-]+/;
        const cityRegex = /^[A-Za-z\s-]+/;
        const zipCodeRegex = /^\d{5}$/;

        const userNameError = $("#userNameError");
        const emailError = $("#emailError");
        const passwordError = $("#passwordError");
        const addressError = $("#addressError");
        const addressError2 = $("#addressError2");
        const cityError = $("#cityError");
        const zipCodeError = $("#zipCodeError");

        userNameError.text("");
        emailError.text("");
        passwordError.text("");
        addressError.text("");
        addressError2.text("");
        cityError.text("");
        zipCodeError.text("");

        if (!userNameRegex.test(userName)) {
            userNameError.text("Invalid User Name. Please use alphanumeric characters.");
            event.preventDefault();
        }
        if (!emailRegex.test(email)) {
            emailError.text("Invalid Email. Please enter a valid email address.");
            event.preventDefault();
        }
        if (!passwordRegex.test(password)) {
            passwordError.text("Invalid Password. It should have a maximum of 8 characters.");
            event.preventDefault();
        }
        if (!addressRegex.test(address)) {
            addressError.text("Invalid Address. Please enter a valid address.");
            event.preventDefault();
        }
        if (!addressRegex2.test(address2)) {
            addressError2.text("Invalid Address. Please enter a valid address.");
            event.preventDefault();
        }
        if (!cityRegex.test(city)) {
            cityError.text("Invalid City. Please enter a valid city name.");
            event.preventDefault();
        }
        if (!zipCodeRegex.test(zipCode)) {
            zipCodeError.text("Invalid Zip Code. Please enter a 5-digit ZIP code.");
            event.preventDefault();
        }
    });
});