<?php
/**
 * Plugin bootstrap.
 *
 * @package Spinix_Migration
 */

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

final class Spinix_Plugin {

	/** @var Spinix_Plugin|null */
	private static $instance = null;

	/**
	 * Singleton.
	 *
	 * @return Spinix_Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	private function __construct() {
		Spinix_Ajax::hooks();
		Spinix_Scheduler::hooks();
		Spinix_Admin::hooks();
		add_action( 'init', array( $this, 'post_restore' ), 999 );
		add_action( 'admin_init', array( 'Spinix_Scheduler', 'ensure' ) );
		/**
		 * Fires when Spinix is loaded (add-ons hook in here).
		 */
		do_action( 'spinix_loaded' );
	}

	/**
	 * Is multisite handled by an add-on?
	 *
	 * @return bool
	 */
	public static function multisite_supported() {
		return (bool) apply_filters( 'spinix_multisite_supported', false );
	}

	/**
	 * Activation.
	 */
	public static function activate() {
		try {
			Spinix_Storage::ensure();
		} catch ( Spinix_Error $e ) {
			// Shown on the dashboard health panel.
			update_option( 'spinix_activation_error', $e->to_array(), false );
		}
		if ( false === get_option( 'spinix_settings', false ) ) {
			add_option( 'spinix_settings', Spinix_Scheduler::defaults(), '', 'no' );
		}
	}

	/**
	 * Deactivation.
	 */
	public static function deactivate() {
		wp_clear_scheduled_hook( Spinix_Scheduler::HOOK );
		wp_clear_scheduled_hook( Spinix_Scheduler::CONTINUE_HOOK );
	}

	/**
	 * First normal page load after a restore: rebuild permalinks and purge caches
	 * with every plugin active (so custom post type URLs work immediately).
	 */
	public function post_restore() {
		if ( defined( 'SPINIX_RESTORE_GUARD' ) || ( function_exists( 'wp_installing' ) && wp_installing() ) ) {
			return;
		}
		$flag = get_option( 'spinix_post_restore' );
		if ( ! $flag ) {
			return;
		}
		delete_option( 'spinix_post_restore' );
		if ( ! function_exists( 'save_mod_rewrite_rules' ) ) {
			require_once ABSPATH . 'wp-admin/includes/misc.php';
		}
		if ( ! function_exists( 'get_home_path' ) ) {
			require_once ABSPATH . 'wp-admin/includes/file.php';
		}
		flush_rewrite_rules( true );
		self::purge_caches();
		Spinix_Log::add( 'Post-restore: permalinks rebuilt and caches purged' );
		do_action( 'spinix_after_restore', $flag );
	}

	/**
	 * Purge popular cache plugins and the object cache.
	 */
	public static function purge_caches() {
		if ( function_exists( 'wp_cache_flush' ) ) {
			wp_cache_flush();
		}
		if ( function_exists( 'rocket_clean_domain' ) ) {
			rocket_clean_domain();
		}
		if ( function_exists( 'w3tc_flush_all' ) ) {
			w3tc_flush_all();
		}
		if ( function_exists( 'wp_cache_clear_cache' ) ) {
			wp_cache_clear_cache();
		}
		if ( class_exists( 'autoptimizeCache' ) && method_exists( 'autoptimizeCache', 'clearall' ) ) {
			autoptimizeCache::clearall();
		}
		if ( function_exists( 'sg_cachepress_purge_cache' ) ) {
			sg_cachepress_purge_cache();
		}
		// Third-party cache plugins' own public purge hooks (not hooks of this plugin).
		do_action( 'litespeed_purge_all' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- LiteSpeed Cache purge hook.
		do_action( 'wpfc_clear_all_cache' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- WP Fastest Cache purge hook.
		do_action( 'breeze_clear_all_cache' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- Breeze purge hook.
		if ( class_exists( '\Elementor\Plugin' ) && isset( \Elementor\Plugin::$instance->files_manager ) ) {
			\Elementor\Plugin::$instance->files_manager->clear_cache();
		}
	}
}