<?php
/**
 * Plugin Name:       helpo – AI Chatbot & Live Chat for WooCommerce
 * Plugin URI:        https://helpo.support/for/wordpress
 * Description:       Connect your site to helpo: an AI support agent trained on your own content, an embeddable chat bubble, and conversations, leads and analytics right inside wp-admin.
 * Version:           0.2.1
 * Requires at least: 6.0
 * Requires PHP:      7.4
 * Author:            helpo
 * Author URI:        https://helpo.support
 * License:           GPL-2.0-or-later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       helpo
 * Domain Path:       /languages
 *
 * @package kasp
 */

defined( 'ABSPATH' ) || exit;

define( 'KASP_VERSION', '0.2.1' );
define( 'KASP_PLUGIN_FILE', __FILE__ );
define( 'KASP_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'KASP_PLUGIN_URL', plugin_dir_url( __FILE__ ) );

/*
 * Service endpoints. Each one can be overridden two ways:
 *
 *   1. a constant in wp-config.php (define( 'KASP_API_URL', 'http://localhost:3000' );)
 *   2. the matching filter below (kasp_api_url / kasp_app_url / kasp_widget_url)
 *
 * The constants are only defined here when the site has not already defined
 * them, which is what makes the wp-config override work.
 */
if ( ! defined( 'KASP_API_URL' ) ) {
	define( 'KASP_API_URL', 'https://api.helpo.support' );
}
if ( ! defined( 'KASP_APP_URL' ) ) {
	define( 'KASP_APP_URL', 'https://app.helpo.support' );
}
if ( ! defined( 'KASP_WIDGET_URL' ) ) {
	define( 'KASP_WIDGET_URL', 'https://chat.helpo.support' );
}

/**
 * Base URL of the helpo API (no trailing slash).
 *
 * @return string
 */
function kasp_api_url() {
	/**
	 * Filters the helpo API base URL.
	 *
	 * @since 0.1.0
	 * @param string $url Base URL, no trailing slash.
	 */
	return untrailingslashit( (string) apply_filters( 'kasp_api_url', KASP_API_URL ) );
}

/**
 * Base URL of the helpo dashboard app (no trailing slash).
 *
 * @return string
 */
function kasp_app_url() {
	/**
	 * Filters the helpo dashboard app base URL.
	 *
	 * @since 0.1.0
	 * @param string $url Base URL, no trailing slash.
	 */
	return untrailingslashit( (string) apply_filters( 'kasp_app_url', KASP_APP_URL ) );
}

/**
 * Base URL the chat widget bundle is served from (no trailing slash).
 *
 * @return string
 */
function kasp_widget_url() {
	/**
	 * Filters the helpo widget CDN base URL.
	 *
	 * @since 0.1.0
	 * @param string $url Base URL, no trailing slash.
	 */
	return untrailingslashit( (string) apply_filters( 'kasp_widget_url', KASP_WIDGET_URL ) );
}

require_once KASP_PLUGIN_DIR . 'includes/class-kasp-plugin.php';

/**
 * Plugin singleton accessor.
 *
 * @return Kasp_Plugin
 */
function kasp() {
	return Kasp_Plugin::instance();
}

kasp();

/**
 * Activation: seed default settings. Nothing remote happens here.
 *
 * @return void
 */
function kasp_activate() {
	if ( false === get_option( Kasp_Settings::OPTION_SETTINGS, false ) ) {
		add_option( Kasp_Settings::OPTION_SETTINGS, Kasp_Settings::defaults() );
	}
	update_option( 'kasp_version', KASP_VERSION, false );
}
register_activation_hook( __FILE__, 'kasp_activate' );

/**
 * Deactivation: drop scheduled sync jobs. Options and the connection survive so
 * that re-activating does not force the user through the handshake again.
 *
 * @return void
 */
function kasp_deactivate() {
	if ( function_exists( 'wp_unschedule_hook' ) ) {
		wp_unschedule_hook( Kasp_Sync::CRON_HOOK );
	}

	// Best-effort upstream revoke: a deactivated plugin should not leave a live
	// token behind. Fire-and-forget (blocking => false) so an offline site never
	// hangs on deactivation; the server's own expiry is the backstop. This is
	// deliberately NOT done in uninstall.php, which may run offline.
	if ( class_exists( 'Kasp_Settings' ) && Kasp_Settings::is_connected() && Kasp_Api_Client::is_secure_base( kasp_api_url() ) ) {
		$token = Kasp_Settings::get_token();
		if ( '' !== $token ) {
			wp_remote_request(
				kasp_api_url() . '/api/integrations/wordpress/token',
				array(
					'method'     => 'DELETE',
					'timeout'    => 5,
					'blocking'   => false,
					'headers'    => array(
						'Accept'        => 'application/json',
						'Authorization' => 'Bearer ' . $token,
					),
					'user-agent' => 'kasp-wordpress/' . KASP_VERSION . '; ' . home_url( '/' ),
				)
			);
		}
	}

	delete_transient( Kasp_Connect::state_transient_key() );
	delete_transient( Kasp_Sync::MAP_RECONCILE_TRANSIENT );
}
register_deactivation_hook( __FILE__, 'kasp_deactivate' );