WooCommerce Custom Email Notifications

<?php

/**
 * Plugin Name: WooCommerce Custom Email Notifications
 * Plugin URI: https://codewp.ai
 * Description: This plugin sends order notifications for different categories to separate email addresses.
 * Version: 1.0.0
 * Author: CodeWP Assistant
 * Author URI: https://codewp.ai
 */

// If this file is called directly, abort.
if (!defined('WPINC')) {
    die;
}

add_action( 'woocommerce_order_status_completed', 'send_custom_email_notifications', 10, 1 );

function send_custom_email_notifications( $order_id ) {
    $order = wc_get_order( $order_id );
    $items = $order->get_items();

    $product_cat_emails = array(
        'marketing' => 'marketing@example.com',
        'product' => 'product@example.com',
    );

    foreach ( $items as $item ) {
        $product_id = $item->get_product_id();
        $terms = get_the_terms( $product_id, 'product_cat' );

        foreach ( $terms as $term ) {
            $cat_name = $term->slug;

            if ( array_key_exists( $cat_name, $product_cat_emails ) ) {
                $to = $product_cat_emails[ $cat_name ];
                $subject = 'New Order: ' . $order->get_order_number();
                $body = 'A new order has been placed on your website. Order number: ' . $order->get_order_number();
                wp_mail( $to, $subject, $body );
            }
        }
    }
}