<?php
/**
 * WooAApanel Orders – auto-provision sites and databases when a WooCommerce
 * order is completed for a product linked to an aaPanel server.
 *
 * Product meta:
 *   _wooaapanel_server_id  (int) – which server to provision on
 */
defined( 'ABSPATH' ) || exit;

class WooAApanel_Orders {

    public function __construct() {
        add_action( 'woocommerce_order_status_completed', [ $this, 'provision_on_complete' ], 10, 1 );
    }

    public function provision_on_complete( int $order_id ): void {
        $order = wc_get_order( $order_id );
        if ( ! $order ) {
            return;
        }

        $customer_id = $order->get_customer_id();
        if ( ! $customer_id ) {
            return; // guest orders – skip
        }

        foreach ( $order->get_items() as $item ) {
            $product_id = $item->get_product_id();
            $server_id  = (int) get_post_meta( $product_id, '_wooaapanel_server_id', true );

            if ( ! $server_id ) {
                continue;
            }

            // Avoid double-provisioning if order is re-completed.
            $provisioned_key = "_wooaapanel_provisioned_{$product_id}";
            if ( $order->get_meta( $provisioned_key ) ) {
                continue;
            }

            global $wpdb;
            $server = $wpdb->get_row( $wpdb->prepare(
                "SELECT * FROM {$wpdb->prefix}wooaapanel_servers WHERE id = %d AND active = 1",
                $server_id
            ) );

            if ( ! $server ) {
                $order->add_order_note( sprintf(
                    __( 'WooAApanel: server #%d not found or inactive – skipping provisioning for product #%d.', 'wooaapanel' ),
                    $server_id,
                    $product_id
                ) );
                continue;
            }

            $user     = get_user_by( 'id', $customer_id );
            $username = $user ? sanitize_user( $user->user_login, true ) : 'user' . $customer_id;
            // Sanitise to aaPanel-safe names (alphanumeric + underscore, max 16 chars).
            $safe_name = preg_replace( '/[^a-z0-9_]/', '', strtolower( $username ) );
            $safe_name = substr( $safe_name ?: 'user', 0, 12 );
            $suffix    = substr( md5( $order_id . $product_id ), 0, 4 );
            $site_name = $safe_name . '_' . $suffix;
            $db_name   = $safe_name . '_' . $suffix;
            $db_user   = $safe_name . '_' . $suffix;
            $db_pass   = wp_generate_password( 16, false );

            $api = WooAApanel_API::from_server( $server );

            // Create site.
            $site_res = $api->add_site( [
                'webname'      => $site_name,
                'path'         => "/www/wwwroot/{$site_name}",
                'type_id'      => 0,
                'version'      => '',
                'port'         => 80,
                'ps'           => "WooCommerce order #{$order_id}",
                'ftp_username' => '',
                'ftp_password' => '',
                'sql'          => 'MySQL',
                'codeing'      => 'utf8mb4',
                'datauser'     => $db_user,
                'datapassword' => $db_pass,
            ] );

            $site_ok = ! empty( $site_res['data']['siteStatus'] ) || ( $site_res['success'] ?? false );

            if ( $site_ok ) {
                // Record site assignment.
                $wpdb->insert( "{$wpdb->prefix}wooaapanel_site_assignments", [
                    'customer_id' => $customer_id,
                    'server_id'   => $server_id,
                    'site_name'   => $site_name,
                    'domain'      => '',
                ] );

                // Record DB assignment.
                $wpdb->insert( "{$wpdb->prefix}wooaapanel_db_assignments", [
                    'customer_id' => $customer_id,
                    'server_id'   => $server_id,
                    'db_name'     => $db_name,
                ] );

                $order->update_meta_data( $provisioned_key, '1' );
                $order->add_order_note( sprintf(
                    __( 'WooAApanel: provisioned site "%s" and database "%s" on server "%s".', 'wooaapanel' ),
                    $site_name,
                    $db_name,
                    $server->name
                ) );
            } else {
                $error = $site_res['error'] ?? wp_json_encode( $site_res['data'] ?? [] );
                $order->add_order_note( sprintf(
                    __( 'WooAApanel: provisioning failed for product #%d on server "%s": %s', 'wooaapanel' ),
                    $product_id,
                    $server->name,
                    $error
                ) );
            }

            $order->save();
        }
    }
}