agenium-agent.php

<?php
/**
 * Plugin Name: Agenium Agent
 * Plugin URI:  https://agenium.net/wordpress-plugin
 * Description: Turns any WordPress site into an agent:// protocol endpoint. Register, discover, and communicate with other agents on the Agenium network.
 * Version:     1.0.0
 * Requires at least: 6.0
 * Requires PHP: 8.0
 * Author:      Agenium
 * Author URI:  https://agenium.net
 * License:     MIT
 * License URI: https://opensource.org/licenses/MIT
 * Text Domain: agenium-agent
 * Domain Path: /languages
 */

defined( 'ABSPATH' ) || exit;

define( 'AGENIUM_AGENT_VERSION', '1.0.0' );
define( 'AGENIUM_AGENT_FILE', __FILE__ );
define( 'AGENIUM_AGENT_DIR', plugin_dir_path( __FILE__ ) );
define( 'AGENIUM_AGENT_URL', plugin_dir_url( __FILE__ ) );
define( 'AGENIUM_DNS_SERVER', 'https://dns.agenium.net' );

// Autoload classes.
require_once AGENIUM_AGENT_DIR . 'includes/class-settings.php';
require_once AGENIUM_AGENT_DIR . 'includes/class-registrar.php';
require_once AGENIUM_AGENT_DIR . 'includes/class-agent-card.php';
require_once AGENIUM_AGENT_DIR . 'includes/class-message-handler.php';
require_once AGENIUM_AGENT_DIR . 'includes/class-resolver.php';
require_once AGENIUM_AGENT_DIR . 'includes/class-rest-api.php';
require_once AGENIUM_AGENT_DIR . 'includes/class-integration-loader.php';

/**
 * Main plugin class.
 */
final class Agenium_Agent {

	private static ?self $instance = null;

	public Agenium_Settings        $settings;
	public Agenium_Registrar       $registrar;
	public Agenium_Agent_Card      $agent_card;
	public Agenium_Message_Handler $message_handler;
	public Agenium_Resolver        $resolver;
	public Agenium_REST_API        $rest_api;
	public Agenium_Integration_Loader $integration_loader;

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

	private function __construct() {
		$this->settings        = new Agenium_Settings();
		$this->registrar       = new Agenium_Registrar();
		$this->agent_card      = new Agenium_Agent_Card();
		$this->message_handler = new Agenium_Message_Handler();
		$this->resolver        = new Agenium_Resolver();
		$this->rest_api            = new Agenium_REST_API();
		$this->integration_loader  = new Agenium_Integration_Loader();

		add_action( 'init', [ $this, 'load_textdomain' ] );
		add_action( 'wp_enqueue_scripts', [ $this, 'enqueue_public_assets' ] );
		add_shortcode( 'agenium_chat', [ $this, 'render_chat_shortcode' ] );

		// Dashboard widget.
		add_action( 'wp_dashboard_setup', [ $this, 'register_dashboard_widget' ] );
	}

	public function load_textdomain(): void {
		load_plugin_textdomain( 'agenium-agent', false, dirname( plugin_basename( __FILE__ ) ) . '/languages' );
	}

	public function enqueue_public_assets(): void {
		if ( ! is_singular() ) {
			return;
		}
		global $post;
		if ( $post && has_shortcode( $post->post_content, 'agenium_chat' ) ) {
			wp_enqueue_style( 'agenium-chat', AGENIUM_AGENT_URL . 'public/chat-widget.css', [], AGENIUM_AGENT_VERSION );
			wp_enqueue_script( 'agenium-chat', AGENIUM_AGENT_URL . 'public/chat-widget.js', [], AGENIUM_AGENT_VERSION, true );
			wp_localize_script( 'agenium-chat', 'ageniumChat', [
				'restUrl' => esc_url_raw( rest_url( 'agenium/v1/' ) ),
				'nonce'   => wp_create_nonce( 'wp_rest' ),
			] );
		}
	}

	/**
	 * [agenium_chat agent="search.agenium"] shortcode.
	 */
	public function render_chat_shortcode( array $atts ): string {
		$atts = shortcode_atts( [
			'agent'       => '',
			'placeholder' => __( 'Type a message…', 'agenium-agent' ),
			'height'      => '400px',
		], $atts, 'agenium_chat' );

		if ( empty( $atts['agent'] ) ) {
			return '<p class="agenium-error">' . esc_html__( 'Missing agent attribute.', 'agenium-agent' ) . '</p>';
		}

		$agent_uri = 'agent://' . sanitize_text_field( $atts['agent'] );

		return sprintf(
			'<div class="agenium-chat-widget" data-agent="%s" style="height:%s">'
			. '<div class="agenium-chat-messages"></div>'
			. '<form class="agenium-chat-form">'
			. '<input type="text" class="agenium-chat-input" placeholder="%s" autocomplete="off" />'
			. '<button type="submit" class="agenium-chat-send">%s</button>'
			. '</form></div>',
			esc_attr( $agent_uri ),
			esc_attr( $atts['height'] ),
			esc_attr( $atts['placeholder'] ),
			esc_html__( 'Send', 'agenium-agent' )
		);
	}

	public function register_dashboard_widget(): void {
		wp_add_dashboard_widget(
			'agenium_agent_status',
			__( 'Agenium Agent Status', 'agenium-agent' ),
			function () {
				require AGENIUM_AGENT_DIR . 'admin/dashboard-widget.php';
			}
		);
	}
}

// Boot.
add_action( 'plugins_loaded', [ 'Agenium_Agent', 'instance' ] );

// Activation: auto-register with DNS.
register_activation_hook( __FILE__, function () {
	// Schedule registration after options are available.
	add_option( 'agenium_agent_name', wp_parse_url( home_url(), PHP_URL_HOST ) );
	add_option( 'agenium_api_key', '' );
	add_option( 'agenium_capabilities', "general\nsearch" );
	add_option( 'agenium_messages_log', [] );

	// Attempt registration.
	$registrar = new Agenium_Registrar();
	$registrar->register();
} );

// Deactivation: optionally unregister.
register_deactivation_hook( __FILE__, function () {
	$registrar = new Agenium_Registrar();
	$registrar->unregister();
} );