<?php
/**
 * Embedded WordPress MCP bootstrap for the AI Agent plugin.
 *
 * @package AI_Agent
 */

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

/**
 * Check whether the standalone wordpress-mcp plugin is already active.
 *
 * @return bool
 */
function rwpai_is_standalone_wordpress_mcp_active() {
	$plugin_file    = 'wordpress-mcp/wordpress-mcp.php';
	$active_plugins = (array) apply_filters( 'active_plugins', get_option( 'active_plugins', array() ) );

	if ( in_array( $plugin_file, $active_plugins, true ) ) {
		return true;
	}

	if ( is_multisite() ) {
		$network_active_plugins = (array) get_site_option( 'active_sitewide_plugins', array() );
		if ( isset( $network_active_plugins[ $plugin_file ] ) ) {
			return true;
		}
	}

	return false;
}

if ( rwpai_is_standalone_wordpress_mcp_active() ) {
	return;
}

if ( ! defined( 'WORDPRESS_MCP_VERSION' ) ) {
	define( 'WORDPRESS_MCP_VERSION', RWPAI_VERSION );
}

if ( ! defined( 'WORDPRESS_MCP_PATH' ) ) {
	define( 'WORDPRESS_MCP_PATH', trailingslashit( RWPAI_PLUGIN_DIR . 'components/mcp' ) );
}

if ( ! defined( 'WORDPRESS_MCP_URL' ) ) {
	define( 'WORDPRESS_MCP_URL', trailingslashit( plugin_dir_url( __FILE__ ) ) );
}

/**
 * Ensure MCP settings exist.
 *
 * @return void
 */
function rwpai_ensure_mcp_settings() {
	if ( function_exists( 'rwpai_sync_mcp_settings_option' ) ) {
		rwpai_sync_mcp_settings_option();
		return;
	}

	if ( false === get_option( 'wordpress_mcp_settings', false ) ) {
		add_option( 'wordpress_mcp_settings', rwpai_get_default_mcp_settings(), '', false );
	}
}

spl_autoload_register(
	function ( $class_name ) {
		$prefixes = array(
			'Rwpai\\WordpressMcp\\' => WORDPRESS_MCP_PATH . 'includes/',
			'Firebase\\JWT\\'       => WORDPRESS_MCP_PATH . 'vendor/firebase/php-jwt/src/',
		);

		foreach ( $prefixes as $prefix => $base_dir ) {
			$length = strlen( $prefix );
			if ( 0 !== strncmp( $prefix, $class_name, $length ) ) {
				continue;
			}

			$relative_class = substr( $class_name, $length );
			$file           = $base_dir . str_replace( '\\', '/', $relative_class ) . '.php';

			if ( file_exists( $file ) ) {
				require_once $file;
			}
		}
	}
);

if ( ! function_exists( 'WPMCP' ) ) {
	/**
	 * Get the embedded WordPress MCP instance.
	 *
	 * @return \Rwpai\WordpressMcp\Core\WpMcp
	 */
	function WPMCP() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
		return \Rwpai\WordpressMcp\Core\WpMcp::instance();
	}
}

/**
 * Bootstrap embedded MCP services.
 *
 * @return void
 */
function rwpai_bootstrap_embedded_mcp() {
	static $bootstrapped = false;

	if ( $bootstrapped ) {
		return;
	}

	rwpai_ensure_mcp_settings();

	$mcp = WPMCP();

	new \Rwpai\WordpressMcp\Core\McpStdioTransport( $mcp );
	new \Rwpai\WordpressMcp\Core\McpStreamableTransport( $mcp );

	if ( function_exists( 'rwpai_register_mcp_auth_hooks' ) ) {
		rwpai_register_mcp_auth_hooks();
	}

	if ( class_exists( '\WP_CLI' ) ) {
		\WP_CLI::add_command( 'mcp validate-tools', \Rwpai\WordpressMcp\Cli\ValidateToolsCommand::class ); // phpcs:ignore
	}

	$bootstrapped = true;
}
add_action( 'init', 'rwpai_bootstrap_embedded_mcp', 20 );