read-back-comments.php

<?php

/**
*
* @link              http://jeffreydewit.com
* @since             1.0.0
* @package           Read_Back_Comments
*
* @wordpress-plugin
* Plugin Name:       Read Back Comments
* Plugin URI:        http://jeffreydewit.com/read-back-comments/
* Description:       A plugin that will read back your comment before posting it. See also: https://xkcd.com/481/
* Version:           1.0.0
* Author:            Jeffrey de Wit
* Author URI:        http://jeffreydewit.com/
* License:           GPL-2.0+
* License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
* Text Domain:       read-back-comments
* Domain Path:       /languages
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

class Read_Back_Comments {

	private $plugin_name;
	private $plugin_version;

	public function __construct() {
		$this->plugin_name = 'read-back-comments';
		$this->plugin_version = '1.0';

		add_action( 'init', array( &$this, 'register_read_back_script' ) );
		add_action( 'init', array( &$this, 'read_back_script_translations' ) );
		add_action( 'wp_enqueue_scripts', array( &$this, 'enqueue_read_back_script' ) );
	}

	public function register_read_back_script() {
		wp_register_script(
			$this->plugin_name,
			plugin_dir_url( __FILE__ ) . 'js/read-back-comments.js',
			array(),
			$this->plugin_version,
			true
		);
	}

	public function read_back_script_translations() {
		$read_back_translations = [
			'button_text' => esc_html__( 'Read back comment', 'read-back-comments' ),
			'no_comment'  => esc_html__( 'You did not type in a comment.', 'read-back-comments' ),
		];

		wp_localize_script( $this->plugin_name, 'readbacki18n', $read_back_translations );
	}

	public function enqueue_read_back_script() {
		if ( ! comments_open() ) {
			return;
		}

		wp_enqueue_script( $this->plugin_name );
	}
}

$read_back_comments = new Read_Back_Comments();