<?php
/**
 * Plugin bootstrap and service registration.
 *
 * @package AIContentByParallax
 */

namespace AIContentByParallax\Core;

defined( 'ABSPATH' ) || exit;

use AIContentByParallax\Admin\Notices as AdminNotices;
use AIContentByParallax\Admin\SettingsPage;
use AIContentByParallax\Admin\SettingsFields;
use AIContentByParallax\Admin\AjaxRequestHandlers;
use AIContentByParallax\Admin\PostRequestHandlers;
use AIContentByParallax\Admin\AdminIncludes;
use AIContentByParallax\Admin\CategoryListIntegration;
use AIContentByParallax\Admin\ProductListIntegration;
use AIContentByParallax\Helpers\DependencyChecker;
use AIContentByParallax\Core\Assets;
use AIContentByParallax\CLI\Registrar as CLI_Registrar;
use AIContentByParallax\Cron\PullBatchRequest;
use AIContentByParallax\Features\OriginalSnapshot;
use AIContentByParallax\Features\Revisions;
use AIContentByParallax\Features\SeoMetaFields;
use AIContentByParallax\Database\BatchRequestTableInstaller;
use AIContentByParallax\Database\BatchRequestItemsTableInstaller;
use AIContentByParallax\Integrations\YoastBridge;
use AIContentByParallax\Integrations\SeoMetaSynchronizer;
use AIContentByParallax\Core\Privacy;

/**
 * Initialize AI Content by Parallax plugin lifecycle.
 */
class Plugin {
	/**
	 * List of services to register.
	 *
	 * @var array
	 */
	private $services = array(
		Client::class,
		AdminIncludes::class,
		AjaxRequestHandlers::class,
		PostRequestHandlers::class,
		PullBatchRequest::class,
		SeoMetaFields::class,
		Revisions::class,
		YoastBridge::class,
		SeoMetaSynchronizer::class,
		OriginalSnapshot::class,
		CLI_Registrar::class,
	);

	/**
	 * List of admin-only services to register.
	 *
	 * @var array
	 */
	private $admin_services = array(
		array( 'admin_init', SettingsFields::class ),
		array( 'admin_notices', AdminNotices::class ),
		array( 'admin_menu', SettingsPage::class ),
		array( 'admin_enqueue_scripts', Assets::class ),
		array( 'admin_init', ProductListIntegration::class ),
		array( 'admin_init', CategoryListIntegration::class ),
		array( 'admin_init', Privacy::class ),
	);

	/**
	 * Hook into WordPress lifecycle to bootstrap services.
	 */
	public function __construct() {
		add_action( 'plugins_loaded', array( $this, 'init' ) );
		add_action( 'init', array( $this, 'register_reserved_meta' ) );
	}

	/**
	 * Register admin and shared services when dependencies are satisfied.
	 */
	public function init() {
		if ( ! DependencyChecker::woocommerce_active() ) {
			add_action( 'admin_notices', array( DependencyChecker::class, 'missing_notice' ) );
			return;
		}

		Settings::maybe_migrate_yoast_term_sync();

		// Ensure table schemas are current on existing installations (no-ops when up to date).
		BatchRequestTableInstaller::maybe_upgrade();
		BatchRequestItemsTableInstaller::maybe_upgrade();

		if ( is_admin() ) {
			foreach ( $this->admin_services as $service ) {
				$hook  = $service[0];
				$class = $service[1];
				add_action( $hook, array( $class, 'register' ) );
			}
		}

		foreach ( $this->services as $service ) {
			if ( method_exists( $service, 'register' ) ) {
				$service::register();
			}
		}
	}

	/**
	 * Declare the schema for v2.0.0 Catalog Data Sync meta keys.
	 *
	 * `register_post_meta` / `register_term_meta` document the expected type,
	 * cardinality, and REST visibility so WordPress is aware of the schema
	 * before v2.0.0 starts writing the keys. The keys are never read or written
	 * by 1.x code; this declaration is forward-compatibility bookkeeping only.
	 *
	 * Note: registration does NOT prevent other plugins from reading or writing
	 * these keys — it only formalises the schema within WordPress's meta registry.
	 */
	public function register_reserved_meta(): void {
		$meta_args = array(
			'type'         => 'string',
			'single'       => true,
			'show_in_rest' => false,
		);

		register_post_meta( 'product', '_parallax_id', $meta_args );
		register_term_meta( 'product_cat', '_parallax_id', $meta_args );
		register_term_meta( 'product_tag', '_parallax_id', $meta_args );
	}
}