custom hook bp bookmark

/**
 * Register Hook
 * @since 0.1
 * @version 1.0.1
 */
add_action( 'mycred_setup_hooks', 'mycredpro_register_bp_bookmarklet_hook', 40 );
function mycredpro_register_bp_bookmarklet_hook( $installed ) {

	$installed['bpbookmarklet'] = array(
		'title'       => __( 'BP-Bookmarklet Plugin for Profile', 'mycred' ),
		'description' => __( 'Awards %_plural% for bookmarking a site in profile.', 'mycred' ),
		'callback'    => array( 'myCRED_Hook_BP_Bookmarklet' )
	);

	return $installed;

}

/**
 * BP Bookmarklet Hook
 * @since 0.1
 * @version 1.7
 */
add_action( 'mycred_load_hooks', 'mycredpro_load_bp_bookmarklet_mycred_hook', 40 );
function mycredpro_load_bp_bookmarklet_mycred_hook() {

	class myCRED_Hook_BP_Bookmarklet extends myCRED_Hook {

		/**
		 * Construct Hook
		 */
		function __construct( $hook_prefs, $type = MYCRED_DEFAULT_TYPE_KEY ) {

			parent::__construct( array(
				'id'       => 'bpbookmarklet',
				'defaults' => array(
					'creds'         => 1,
					'log'           => '%plural% for bookmarking a site in profile',
					'limit'         => '0/x'
		 */
		public function run() {

			if ( $this->prefs['bookmarks']['creds'] != 0 )
				add_action( 'bp_bookmarklet_format_activity_action_published',  array( $this, 'bookmark_published' ), 10, 2 );
		}

		/**
		 * Bookmark Published
		 * @since 0.1
		 * @version 1.2
		 */
		public function bookmark_published( $content, $user_id ) {

			// Check if user is excluded
			if ( $this->core->exclude_user( $user_id ) ) return;

			// Limit
			if ( $this->over_hook_limit( '', 'new_bookmarking_site', $user_id ) ) return;

			// Execute
			$this->core->add_creds(
				'new_bookmarking_site',
				$user_id,
				$this->prefs['creds'],
				$this->prefs['log'],
				0,
				'bp_activity',
				$this->mycred_type
			);

		}

		/**
		 * Preferences
		 * @since 0.1
		 * @version 1.1
		 */
		public function preferences() {

			$prefs = $this->prefs;?>

<!-- Creds for bookmarking sites -->
<label for="<?php echo $this->field_id( 'creds' ); ?>" class="subheader"><?php echo $this->core->template_tags_general( __( '%plural% for Bookmarking a Site in Profile', 'mycred' ) ); ?></label>
<ol>
	<li>
		<div class="h2"><input type="text" name="<?php echo $this->field_name( 'creds' ); ?>" id="<?php echo $this->field_id( array( 'bookmarks', 'creds' ) ); ?>" value="<?php echo $this->core->number( $prefs['creds'] ); ?>" size="8" /></div>
	</li>
</ol>
<ol>
	<li>
		<label for="<?php echo $this->field_id( 'limit' ); ?>"><?php _e( 'Limit', 'mycred' ); ?></label>
		<?php echo $this->hook_limit_setting( $this->field_name( 'limit' ), $this->field_id( 'limit' ), $prefs['limit'] ); ?>
	</li>
</ol>
<label class="subheader"><?php _e( 'Log template', 'mycred' ); ?></label>
<ol>
	<li>
		<div class="h2"><input type="text" name="<?php echo $this->field_name( 'log' ); ?>" id="<?php echo $this->field_id( 'log' ); ?>" value="<?php echo esc_attr( $prefs['log'] ); ?>" class="long" /></div>
		<span class="description"><?php echo $this->available_template_tags( array( 'general' ) ); ?></span>
	</li>
</ol>
<?php

		}

		/**
		 * Sanitise Preferences
		 * @since 1.6
		 * @version 1.1
		 */
		function sanitise_preferences( $data ) {

			if ( isset( $data['limit'] ) && isset( $data['limit_by'] ) ) {
				$limit = sanitize_text_field( $data['limit'] );
				if ( $limit == '' ) $limit = 0;
				$data['limit'] = $limit . '/' . $data['limit_by'];
				unset( $data['limit_by'] );
			}

			return $data;

		}

	}

}