Extending WordPress Plugin DM Confirm Email

functions.php

add_action( 'init', 'my_ajax_init' );
function my_ajax_init() {

	add_action('wp_ajax_nopriv_create_user', 'create_user_function');
	add_action('wp_ajax_create_user', 'create_user_function');

}




/* ------------------------------------------------------------------------ *  

	Checks if email & username are in use
	Creates user with DmConfirmEmail_Models_Registration

* ------------------------------------------------------------------------ */
function create_user_function(){
	//check_ajax_referer( 'sk-ajax-nonce', 'nonce'); // look into setting up a nonce for security

	$array = array();
	$email = isset($_POST['email']) ? $_POST['email'] : 'null';
	$login = isset($_POST['uname']) ? $_POST['uname'] : 'null';

	// check if username exists in the WP database
	    if ( username_exists( $login ) )
	    { 
	    	$array['wpuser'] = true;
	    	$array['status'] = "Looks like $login is taken!";
		echo json_encode($array);
		die();
	    } 
	    else if ( email_exists( $email ) )
	    { 
	    	$array['wpemail'] = true;
		echo json_encode($array);
		die();
	    }


	// check if username / email exists in the DM Confirm table
		$emailExists = checkExist( 'user_email', $email );
		$loginExists = checkExist( 'user_login', $login );

		if ( $loginExists != 0 ){ 
			$array['dmlogin'] = true;
			$array['status'] = "Looks like youve signed up before with $login <br />Try a password recovery.";
			echo json_encode($array);
			die();
		} 
		else if( $emailExists != 0 )
		{
			$array['dmemail'] = true;
			$array['status'] = "Looks like youve signed up before with $email <br />You should have a confirmation email.";
			echo json_encode($array);
			die();
		}
		else
		{
			// call DM Confirm plugin function to create user 
			$DM = new DmConfirmEmail_Models_Registration($login, $email);

			// not sure how to get any status from $DM->register(); @BenRacicot
			$DM->register();

			$array['status'] = 'Please check your email to confirm your new account - This is very exciting!';
			echo json_encode($array);
		}

	die();

}


/**
* reuse the DM Confirm Plugin checkExist function to see if user has already tried to signup
* Checks if user exists in the DM Confirm unconfirmed usernames and emails table
* @param string $user Either user_login or user_email only
* @param string $data
* @return mixed
*/
function checkExist($user, $data) {
    global $wpdb;

    $result = $wpdb->get_var(
        $wpdb->prepare(
            "SELECT COUNT(*) FROM {$wpdb->prefix}" . DmConfirmEmail::PLUGIN_ALIAS . " WHERE {$user} = %s",
            $data
        )
    );

    return $result;
}

initialform.html

// This form is the CTA, for use anywhere.
// After inputting the email here the user is redirected to /signup/
// Once there, the fields will be have the email already filled out (see local storage in usercreate.js)

<div class="signupcta">
	<a class="centeredTxt" href="/signup/">
		<h3>Create an account<br />Cuz we're awesome!<br />Get Exclusive deals!</h3>
	</a>
	<input type='text' id='frontPageEmail' value='' maxlength='50' placeholder='email'>
</div>

page-signup.php

<?php
/*
Template Name: Signup
*/

// If they enter their data here it is saved to localStorage. This way if they abandone the form when they come back
// it will be prefilled out with their info... Pretty cool eh?

?>

<?php get_header(); ?>

<div id="content">

	<div id="inner-content" class="wrap clearfix">

		<div id="main" class="first clearfix" role="main">

			<div class="signin">
				
				<?php if ( ! is_user_logged_in() ) { ?>

					<h2>Create Account</h2>
					<input name='' type='text' id='Email' value='' size='' maxlength='' placeholder='Email'>
					<input name='' type='text' id='First' value='' size='' maxlength='' placeholder='First Name'>
					<input name='' type='text' id='Last' value='' size='' maxlength='' placeholder='Last Name'>
					<input name='' type='text' id='UName' value='' size='' maxlength='' placeholder='User Name'>
					<input id='createAcc' class='' name='' type='button' value='Create Account'>

				<?php } else { 

						//header('Location: '.home_url().'/profile/');
						echo "<h3>You are already logged in.</h3>";
						global $current_user;
						get_currentuserinfo(); 

					}

					// hook failed login
					add_action('wp_login_failed', 'my_front_end_login_fail'); 
					 
				?>

				<div id="successMsg"></div>
				
			</div>

		</div>

	</div>

</div>


<?php get_footer(); ?>

usercreate.js

/* ------------------------------------------------------------------------ *  
	HOME PAGE SIGNUP FORM
* ------------------------------------------------------------------------ */

  // save user data as they type to make it that much easier for them on the signup page
	jQuery("#frontPageEmail").on('keyup', function(e){ 
		var email = jQuery("#frontPageEmail").val();
			
		if ( this.value.length > 8 ) 
		{ 
			localStorage.setItem('Email', email);
		}
		if ( e.which == 13 && this.value.length > 8 ) 
		{ 
			window.location.assign('/signup/'); // /create-account/
		}

	});



/* ------------------------------------------------------------------------ *  
	GET YA FORM VALUES HE'AH
* ------------------------------------------------------------------------ */

		// If information has been previously entered propagate it
		jQuery("#Email").val(localStorage.Email);
		jQuery("#First").val(localStorage.First);
		jQuery("#Last").val(localStorage.Last);
		jQuery("#UName").val(localStorage.UName);

		// save value to prospective localStorage (blur for autocomplete values)
		jQuery("input").on('blur keyup', function(e){ 
			var field = jQuery(this).attr('id');
				localStorage.setItem(field, this.value);
		});

		// On Submission
		jQuery('#createAcc').on('click', function(){ 

			// Validation
			if ( jQuery("#Email").val().length > 8 && jQuery("#UName").val().length > 2 ){ 

				console.log('Submitted!');

				var data = {
					action: 'create_user',
					//nonce: skNonce, // look into setting up a nonce for security
					email: localStorage.Email,
					first: localStorage.First,
					last: localStorage.Last,
					uname: localStorage.UName
				}

				createUser(data);

			} else { console.log('Email issues'); }

		});


function createUser(data){

	jQuery.ajax({
		type:"POST",
		url: My_Obj.ajaxurl, // the request is sent to this url
		data: data,
		dataType: 'json',
		beforeSend: function () { /* AJAX request is about to be sent don't forget about async: true */ },
		complete: function () { /* AJAX request has completed */ },
		success: function (response) { 
			console.log('success'); 
			console.log('object: ' + JSON.stringify(response, null, 4));
			jQuery("#successMsg").text(console.log('status' + response.status) );
		},      
		error: function (xhr, status, error) { 
			console.log( 'xhr: ' + JSON.stringify(xhr.responseJSON, null, 4) );
			console.log( 'status: '+ status ); 
			console.log( 'error: '+ error ); 
		}

	});


};