<?php
/**
 * Plugin Name: FFAS Cache Manager
 * Description: Page caching, cache prewarming, browser-cache rules, and automatic invalidation for WordPress.
 * Version: 1.0.0
 * Requires at least: 5.8
 * Requires PHP: 7.4
 * Author: Fernando Fas
 * Author URI: https://profiles.wordpress.org/fernandofas2909/
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: ffas-cache-manager
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

define( 'FFASCACHEMANAGER_VERSION', '1.0.0' );
define( 'FFASCACHEMANAGER_PLUGIN_FILE', __FILE__ );
define( 'FFASCACHEMANAGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'FFASCACHEMANAGER_PLUGIN_URL', plugin_dir_url( __FILE__ ) );

final class FFASCACHEMANAGER_Plugin {
	private static $instance = null;

	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	private function __construct() {
		require_once FFASCACHEMANAGER_PLUGIN_DIR . 'includes/class-ffascachemanager-cache.php';
		require_once FFASCACHEMANAGER_PLUGIN_DIR . 'includes/class-ffascachemanager-settings-transfer.php';

		add_action( 'admin_menu', array( $this, 'admin_menu' ) );
		add_action( 'admin_init', array( 'FFASCACHEMANAGER_Cache_Tools', 'register_settings' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'admin_assets' ) );
		add_action( 'admin_bar_menu', array( $this, 'admin_bar_menu' ), 100 );
		add_action( 'admin_post_ffascachemanager_toggle_cache', array( 'FFASCACHEMANAGER_Cache_Tools', 'handle_toggle_cache' ) );
		add_action( 'admin_post_ffascachemanager_clear_cache', array( 'FFASCACHEMANAGER_Cache_Tools', 'handle_clear_cache' ) );
		add_action( 'admin_post_ffascachemanager_prewarm_cache', array( 'FFASCACHEMANAGER_Cache_Tools', 'handle_prewarm_cache' ) );
		add_action( 'template_redirect', array( 'FFASCACHEMANAGER_Cache_Tools', 'maybe_serve_cache' ), 1 );
		add_action( 'template_redirect', array( 'FFASCACHEMANAGER_Cache_Tools', 'start_cache_buffer' ), 1 );
		add_action( 'save_post', array( 'FFASCACHEMANAGER_Cache_Tools', 'maybe_clear_on_save' ), 10, 2 );
		foreach ( array( 'deleted_post', 'trashed_post', 'untrashed_post', 'comment_post', 'edit_comment', 'deleted_comment', 'transition_comment_status', 'wp_update_nav_menu', 'switch_theme', 'activated_plugin', 'deactivated_plugin' ) as $hook ) {
			add_action( $hook, array( 'FFASCACHEMANAGER_Cache_Tools', 'maybe_clear_all' ) );
		}
		add_action( 'ffascachemanager_cache_prewarm', array( 'FFASCACHEMANAGER_Cache_Tools', 'handle_scheduled_prewarm' ) );
		add_action( 'ffascachemanager_cache_gc', array( 'FFASCACHEMANAGER_Cache_Tools', 'handle_gc' ) );
		add_action( 'update_option_ffascachemanager_cache_settings', array( 'FFASCACHEMANAGER_Cache_Tools', 'handle_settings_update' ), 10, 2 );
		FFASCACHEMANAGER_Settings_Transfer::hooks();
	}

	public static function get_upload_dir() {
		$uploads = wp_upload_dir();
		$dir = trailingslashit( $uploads['basedir'] ) . 'ffas-cache-manager/';
		if ( ! is_dir( $dir ) ) {
			wp_mkdir_p( $dir );
		}
		return trailingslashit( $dir );
	}

	public static function get_root_file_path( $filename ) {
		return trailingslashit( ABSPATH ) . ltrim( sanitize_file_name( $filename ), '/' );
	}

	public function admin_menu() {
		add_menu_page( __( 'FFAS Cache Manager', 'ffas-cache-manager' ), __( 'FFAS Cache Manager', 'ffas-cache-manager' ), 'manage_options', 'ffascachemanager-cache-tools', array( 'FFASCACHEMANAGER_Cache_Tools', 'render_page' ), 'dashicons-performance', 80 );
		add_submenu_page( 'ffascachemanager-cache-tools', __( 'Export / Import', 'ffas-cache-manager' ), __( 'Export / Import', 'ffas-cache-manager' ), 'manage_options', 'ffascachemanager-settings-transfer', array( 'FFASCACHEMANAGER_Settings_Transfer', 'render_page' ) );
	}

	public function admin_assets( $hook ) {
		if ( false === strpos( (string) $hook, 'ffascachemanager' ) ) {
			return;
		}
		wp_enqueue_style( 'ffascachemanager-admin', FFASCACHEMANAGER_PLUGIN_URL . 'assets/admin.min.css', array(), FFASCACHEMANAGER_VERSION );
	}

	public function admin_bar_menu( $admin_bar ) {
		if ( ! is_admin_bar_showing() || ! current_user_can( 'manage_options' ) ) {
			return;
		}
		$admin_bar->add_node( array( 'id' => 'ffascachemanager-clear', 'title' => __( 'Clear FFAS Cache Manager', 'ffas-cache-manager' ), 'href' => wp_nonce_url( admin_url( 'admin-post.php?action=ffascachemanager_clear_cache' ), 'ffascachemanager_clear_cache' ) ) );
	}
}

if ( ! class_exists( 'FFASCACHEMANAGER_Pro' ) ) {
	class_alias( 'FFASCACHEMANAGER_Plugin', 'FFASCACHEMANAGER_Pro' );
}

function ffascachemanager_boot() {

	FFASCACHEMANAGER_Plugin::instance();
}
add_action( 'plugins_loaded', 'ffascachemanager_boot', 20 );