Plugin Development – WooCommerce Custom Shipping Method

				
					<?php

/**
 * The plugin bootstrap file
 *
 * This file is read by WordPress to generate the plugin information in the plugin
 * admin area. This file also includes all of the dependencies used by the plugin,
 * registers the activation and deactivation functions, and defines a function
 * that starts the plugin.
 *
 * @link              https://domain.co.za
 * @since             1.0.0
 * @package           WOOCOMMERCE_CUSTOM_SHIPPING_METHOD
 *
 * @wordpress-plugin
 * Plugin Name:       WooCommerce Custom Shipping Method
 * Plugin URI:        https://domain.co.za
 * Description:       lorem ipsum dolor sit amet
 * Version:           1.0.0
 * Author:            Your Name
 * Author URI:        https://domain.co.za
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain:       woocommerce-custom-shipping-method
 * Domain Path:       /languages
 */

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

add_action('woocommerce_shipping_init', 'custom_shipping_init');

function custom_shipping_init()
{
    if (!class_exists('WC_CUSTOM_SHIPPING')) {
        class WC_CUSTOM_SHIPPING extends WC_Shipping_Method
        {
            public function __construct()
            {
                $this->id = 'custom_shipping';
                $this->method_title = __('Custom Shipping Method', 'woocommerce-custom-shipping-method');
                $this->method_description = __('This is a custom shipping method', 'woocommerce-custom-shipping-method');
                $this->method_order = 10;
                $this->enabled = "yes";
                $this->title = "Custom Shipping Method";

                $this->init();
            }

            public function init()
            {
                $this->init_form_fields();
                $this->init_settings();

                add_action('woocommerce_update_options_shipping' . $this->id, array($this, 'process_admin_options'));
            }

            public function calculate_shipping($package = array())
            {
                $rate = array(
                    'label' => $this->title,
                    'cost' => '120',
                    'calc_tax' => 'per_item',
                );

                $this->add_rate($rate);
            }
        }
    }
}

add_filter('woocommerce_shipping_methods', 'add_custom_shipping_method');
function add_custom_shipping_method($methods)
{
    $methods['custom_shipping_method'] = 'WC_CUSTOM_SHIPPING';

    return $methods;
}