nss-add-social-site.php

<?php
/**
 * Plugin Name: Naked Social Share Add-On
 * Plugin URI: https://www.nosegraze.com
 * Description: Demonstrates how to add an extra social site to Naked Social Share.
 * Version: 1.2
 * Author: Nose Graze
 * Author URI: https://www.nosegraze.com
 * License: GPL2
 * 
 * @package nss-addon
 * @copyright Copyright (c) 2022, Nose Graze Ltd.
 * @license GPL2+
*/

/**
 * Add 'Email' as a new social media site.
 *
 * @param array $sites Available sites.
 *
 * @return array
 */
function nss_addon_add_email( $sites ) {
	$sites['email'] = __( 'Email' );

	return $sites;
}

add_filter( 'naked-social-share/available-sites', 'nss_addon_add_email' );

/**
 * Display the Email Button
 *
 * If you want to display a share counter, you need to code the function for
 * fetching the share count.
 *
 * @param string  $site_name     Array key of the site being displayed.
 * @param array   $share_numbers Array of share numbers for all social sites.
 * @param WP_Post $post          Object for current post.
 * @param bool    $disable_counters
 *
 * @return void
 */
function nss_addon_display_email( $site_name, $share_numbers, $post, $disable_counters ) {
	// Bail if the site name isn't 'email'.
	if ( $site_name != 'email' ) {
		return;
	}
	?>
	<li class="nss-email">
		<a href="mailto:?subject=<?php echo esc_attr( urlencode( $post->post_title ) ); ?>&body=<?php echo esc_url( get_permalink( $post ) ); ?>" target="_blank">
			<i class="fa fa-envelope"></i>
			<span class="nss-site-name"><?php _e( 'Email' ); ?></span>
			<?php if ( $disable_counters == false ) : ?>
				<span class="nss-site-count"><!-- Share count here --></span>
			<?php endif; ?>
		</a>
	</li>
	<?php
}

add_action( 'naked_social_share_display_buttons', 'nss_addon_display_email', 10, 4 );