Dynamic popup alerts with Hustle based on CTP and cookies

hustle-alert-popup.php

<?php 

########################################
#
# dynamic popup alerts with Hustle
# 
# create an informational popup in Hustle
# put shortocde [hustle-alert-content] in popup content body
#
# set visibility condition to show popup
# if a "popup_alert_show" cookie equals 1
#
# create your alerts in Popup Alerts (custom post type)
# in WordPress 
#
# USE CODE AS MU-PLUGIN
#
#######################################





// shortocde
// to fetch most recent "alert" into popup content
// place the shortcode [hustle-alert-content] in 
// hustle popup

 function hustle_alert_show()
 {
      global $post;

      $html = "";

      $my_query = new WP_Query( array(
           'post_type' => 'PopupAlert',
           'posts_per_page' => 1
      ));

      if( $my_query->have_posts() ) : while( $my_query->have_posts() ) : $my_query->the_post();

           $html .= "<h2>" . get_the_title() . "</h2>";
           $html .= "<p>" . get_the_excerpt() . "</p>";
		   
		   # uncomment line below if you want to include 
		   # direct link to alert in content
           // $html .= "<a href=\"" . get_permalink() . "\" class=\"button\">Read more</a>";
		   
		   		  

      endwhile; endif;

      return $html;
 }
 add_shortcode( 'hustle-alert-content', 'hustle_alert_show' );
 
 
 # let's get the ID of the newest alert and set cookie in user's browser
 function hustle_alert_cookie_set() {
	 
	 global $post;

     $my_query = new WP_Query( array(
           'post_type' => 'PopupAlert',
           'posts_per_page' => 1
      ));

      if( $my_query->have_posts() ) : while( $my_query->have_posts() ) : $my_query->the_post();

     
		$alert_id = get_the_ID();	

		if (!isset($_COOKIE['popup_alert_seen']) || $_COOKIE['popup_alert_seen'] < $alert_id  ) {
		   
			//set cookie (valid for year) to save alert ID and show popup
			setcookie( 'popup_alert_seen', $alert_id, time()+3600*24*365 );  
			setcookie( 'popup_alert_show', '1', time()+3600*24*365 );
		
		}
		else {
			
			//set cookie (valid for year) to hide popup and extend hide time
			setcookie( 'popup_alert_seen', $alert_id, time()+3600*24*365 );  
			setcookie( 'popup_alert_show', '0', time()+3600*24*365 );
			
		}
		  

      endwhile; endif;
	 
	 
 }
 add_action( 'template_redirect', 'hustle_alert_cookie_set' );
 
 
 // ---------------------------------------------
 // ---------------------------------------------
 # STANDARD CUSTOM POST TYPE REGISTRATION
 
 # just a basic post type (title and content)
 
 // Register Custom Post Type
// Register Custom Post Type
function custom_post_type_hustle_alert() {

	$labels = array(
		'name'                  => _x( 'PopupAlert', 'Post Type General Name', 'text_domain' ),
		'singular_name'         => _x( 'PopupAlerts', 'Post Type Singular Name', 'text_domain' ),
		'menu_name'             => __( 'Popup Alerts', 'text_domain' ),
		'name_admin_bar'        => __( 'Popup Alerts', 'text_domain' ),
		'archives'              => __( 'Item Archives', 'text_domain' ),
		'attributes'            => __( 'Item Attributes', 'text_domain' ),
		'parent_item_colon'     => __( 'Parent Item:', 'text_domain' ),
		'all_items'             => __( 'All Alerts', 'text_domain' ),
		'add_new_item'          => __( 'Add New Alert', 'text_domain' ),
		'add_new'               => __( 'Add New', 'text_domain' ),
		'new_item'              => __( 'New Alert', 'text_domain' ),
		'edit_item'             => __( 'Edit Alert', 'text_domain' ),
		'update_item'           => __( 'Update Alert', 'text_domain' ),
		'view_item'             => __( 'View Alert', 'text_domain' ),
		'view_items'            => __( 'View Alerts', 'text_domain' ),
		'search_items'          => __( 'Search Alerts', 'text_domain' ),
		'not_found'             => __( 'Not found', 'text_domain' ),
		'not_found_in_trash'    => __( 'Not found in Trash', 'text_domain' ),
		'featured_image'        => __( 'Featured Image', 'text_domain' ),
		'set_featured_image'    => __( 'Set featured image', 'text_domain' ),
		'remove_featured_image' => __( 'Remove featured image', 'text_domain' ),
		'use_featured_image'    => __( 'Use as featured image', 'text_domain' ),
		'insert_into_item'      => __( 'Insert into Alert', 'text_domain' ),
		'uploaded_to_this_item' => __( 'Uploaded to this Alert', 'text_domain' ),
		'items_list'            => __( 'Alerts list', 'text_domain' ),
		'items_list_navigation' => __( 'Alerts list navigation', 'text_domain' ),
		'filter_items_list'     => __( 'FilterAlerts list', 'text_domain' ),
	);
	$args = array(
		'label'                 => __( 'Alert', 'text_domain' ),
		'description'           => __( 'Post Type Description', 'text_domain' ),
		'labels'                => $labels,
		'supports'              => array( 'title', 'editor' ),
		'taxonomies'            => array(),
		'hierarchical'          => false,
		'public'                => true,
		'show_ui'               => true,
		'show_in_menu'          => true,
		'menu_position'         => 5,
		'show_in_admin_bar'     => true,
		'show_in_nav_menus'     => true,
		'can_export'            => true,
		'has_archive'           => false,
		'exclude_from_search'   => false,
		'publicly_queryable'    => true,
		'capability_type'       => 'page',
	);
	register_post_type( 'PopupAlert', $args );

}
add_action( 'init', 'custom_post_type_hustle_alert', 0 );