Add conditional WP-CLI initialization and hooks

- Only initialize CLI hooks when WP-CLI is available using defined('WP_CLI') check
- Move CLI initialization from admin_init() to init() for broader availability
- Register CLI commands using proper cli_init hook instead of immediate registration
- Improve performance by avoiding unnecessary objects when CLI is not present
- Ensure CLI commands work in all WordPress contexts (web, CLI, AJAX, etc.)

This prevents CLI-related code from running in web requests while ensuring
WP-CLI commands are properly available when needed.

Author: tijmenbruggeman

src/class-tiny-cli.php

@@ -0,0 +1,48 @@
+<?php
+/*
+* Tiny Compress Images - WordPress plugin.
+* Copyright (C) 2015-2018 Tinify B.V.
+*
+* This program is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License as published by the Free
+* Software Foundation; either version 2 of the License, or (at your option)
+* any later version.
+*
+* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+class Tiny_Cli {
+	/**
+	 * Tiny_Plugin $settings
+	 *
+	 * @var Tiny_Settings
+	 */
+	private $tiny_settings;
+
+	public function __construct( $settings ) {
+		$this->tiny_settings = $settings;
+
+		$this->add_hooks();
+	}
+
+	/**
+	 * Registers hooks to set up CLI support
+	 */
+	public function add_hooks() {
+		// Only add CLI hooks when WP-CLI is available
+		if ( defined( 'WP_CLI' ) && WP_CLI ) {
+			add_action( 'cli_init', array( $this, 'register' ) );
+		}
+	}
+
+	public function register() {
+		\WP_CLI::add_command( 'tiny', $this );
+	}
+}

src/class-tiny-plugin.php

@@ -63,6 +63,8 @@ public function init() {
 		load_plugin_textdomain( self::NAME, false,
 			dirname( plugin_basename( __FILE__ ) ) . '/languages'
 		);
+
+		new Tiny_CLI( $this->settings );
 	}
 
 	public function ajax_init() {

tiny-compress-images.php

@@ -21,6 +21,7 @@
 require dirname( __FILE__ ) . '/src/class-tiny-settings.php';
 require dirname( __FILE__ ) . '/src/class-tiny-plugin.php';
 require dirname( __FILE__ ) . '/src/class-tiny-notices.php';
+require dirname( __FILE__ ) . '/src/class-tiny-cli.php';
 require dirname( __FILE__ ) . '/src/compatibility/wpml/class-tiny-wpml.php';
 require dirname( __FILE__ ) . '/src/compatibility/as3cf/class-tiny-as3cf.php';