Really Simple CSV Importer Action add-on

rscsvimporter-action.php

<?php
/*
Plugin Name: Really Simple CSV Importer Action add-on
Description: Run the additional action after importing the post data
Author: Takuro Hishikawa
Version: 0.1
*/

class rscsvimporter_action {
	// singleton instance
	private static $instance;
	
	public static function instance() {
		if ( isset( self::$instance ) )
			return self::$instance;
		
		self::$instance = new rscsvimporter_action;
		self::$instance->run_init();
		return self::$instance;
	}
	
	private function __construct() {
		/** Do nothing **/
	}
	
	protected function run_init() {
		add_action( 'init', array( $this, 'add_action' ) );
	}
	
	public function add_action() {
		add_filter( 'really_simple_csv_importer_post_saved', array( $this, 'add_comment'), 50 );
	}
	
	public function add_comment($post) {
		$commentdata = array(
			'comment_post_ID' => $post->ID,
			'comment_content' => 'Imported comment.'
		);
		wp_new_comment( $commentdata );
	}
	
}

$rscsvimporter_action = rscsvimporter_action::instance();