wc-shipping-carrier-account/wc-shipping-carrier-account.php

<?php

/**
 * Plugin Name: Carrier Account Shipping
 * Description: Carrier Account Shipping Method for WooCommerce
 * Version: 1.0.1
 * Author: Eric Fawcett
 * Author URI: http://ericfawcett.com
 * Gitea Plugin URI: https://dev.ericfawcett.com/ericfawcett/wc-shipping-carrier-account
 */

if ( ! defined( 'WPINC' ) )
{

	die;

}

/*
 * Check if WooCommerce is active
 */
if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) )
{
	function carrieracct_shipping_method()
	{
		if ( ! class_exists( 'CarrierAcct_Shipping_Method' ) )
		{
			class CarrierAcct_Shipping_Method extends WC_Shipping_Method {
				/**
				 * Constructor for your shipping class
				 *
				 * @access public
				 * @return void
				 */
				public function __construct()
				{
					$this->id                 = 'carrieracct';
					$this->method_title       = __( 'CarrierAcct Shipping', 'carrieracct' );
					$this->method_description = __( 'Custom Shipping Method for CarrierAcct', 'carrieracct' );

					$this->init();

					$this->enabled = isset( $this->settings['enabled'] ) ? $this->settings['enabled'] : 'no';
					$this->title = isset( $this->settings['title'] ) ? $this->settings['title'] : __( 'CarrierAcct Shipping', 'carrieracct' );

				}


				/**
				 * Init your settings
				 *
				 * @access public
				 * @return void
				 */
				function init()
				{
					// Load the settings API
					$this->init_form_fields();
					$this->init_settings();

					// Save settings in admin if you have any defined
					add_action( 'woocommerce_update_options_shipping_' . $this->id, array( $this, 'process_admin_options' ) );
				}


				/**
				 * Define settings field for this shipping
				 * @return void
				 */
				function init_form_fields()
				{

					$this->form_fields = array(

						'enabled' => array(
							'title' => __( 'Enable', 'carrieracct' ),
							'type' => 'checkbox',
							'description' => __( 'Enable this shipping.', 'carrieracct' ),
							'default' => 'yes'
						),

						'title' => array(
							'title' => __( 'Title', 'carrieracct' ),
							'type' => 'text',
							'description' => __( 'Title to be display on site', 'carrieracct' ),
							'default' => __( 'CarrierAcct Shipping', 'carrieracct' )
						),
					);

				}


				/**
				 * This function is used to calculate the shipping cost. Within this function we can check for weights, dimensions and other parameters.
				 *
				 * @access public
				 * @param mixed $package
				 * @return void
				 */
				public function calculate_shipping( $package = array( ))
				{

					$rate = array(
						'id'       => $this->id,
						'label'    => $this->title,
						'cost'     => '0',
						'calc_tax' => 'per_order',
						'package'  => $package,
					);

					// Register the rate
					$this->add_rate( $rate );

				}


			}


		}
	}


	add_action( 'woocommerce_shipping_init', 'carrieracct_shipping_method' );

	function add_carrieracct_shipping_method( $methods )
	{
		$methods['carrieracct'] = 'CarrierAcct_Shipping_Method';
		return $methods;
	}


	add_filter( 'woocommerce_shipping_methods', 'add_carrieracct_shipping_method' );

	// Add custom fields to a specific selected shipping method
	add_action( 'woocommerce_after_shipping_rate', 'carrier_custom_fields', 20, 2 );
	function carrier_custom_fields( $method, $index )
	{
		if
		( ! is_checkout()) return; // Only on checkout page

		$customer_carrier_method = 'carrieracct';

		if
		( $method->id != $customer_carrier_method ) return; // Only display for "local_pickup"

		$chosen_method_id = WC()->session->chosen_shipping_methods[ $index ];

		// If the chosen shipping method is 'legacy_local_pickup' we display
		if
		($chosen_method_id == $customer_carrier_method ):

			echo '<div class="custom-carrier" style="width:400px;">';

		woocommerce_form_field( 'carrier_name' , array(
				'type'          => 'select',
				'class'         => array('form-row-first carrier-name'),
				'required'      => true,
				'options'    => array(
					'' => __('Select a carrier', 'carrieracct'),
					'UPS' => __('UPS', 'carrieracct'),
					'FedEx' => __('FedEx', 'carrieracct'),
					'DHL' => __( 'DHL', 'carrieracct' ),
				)
			), WC()->checkout->get_value( 'carrier_name' ));

		woocommerce_form_field( 'carrier_number' , array(
				'type'          => 'text',
				'class'         => array('form-row-last carrier-number'),
				'required'      => true,
				'placeholder'   => 'Carrier Number',
			), WC()->checkout->get_value( 'carrier_number' ));

		echo '</div>';
		endif;
	}


	// Check custom fields validation
	add_action('woocommerce_checkout_process', 'carrier_checkout_process');
	function carrier_checkout_process()
	{
		if
		( isset( $_POST['carrier_name'] ) && empty( $_POST['carrier_name'] ) )
			wc_add_notice( ( "Missing shipping carrier name." ), "error" );

		if( isset( $_POST['carrier_number'] ) && empty( $_POST['carrier_number'] ) )
			wc_add_notice( ( "Missing shipping carrier account number." ), "error" );
	}


	// Save custom fields to order meta data
	add_action( 'woocommerce_checkout_update_order_meta', 'carrier_update_order_meta', 30, 1 );
	function carrier_update_order_meta( $order_id ) {
		if( !empty( $_POST['carrier_name'] ))
			update_post_meta( $order_id, '_carrier_name', sanitize_text_field( $_POST['carrier_name'] ) );

		if( !empty( $_POST['carrier_number'] ))
			update_post_meta( $order_id, '_carrier_number', sanitize_text_field( $_POST['carrier_number'] ) );
	}
	
	function carrier_display_in_admin( $order ){  ?>
	        <h3><?php _e( 'Carrier Account' ); ?></h3>
	        <?php 
	            echo '<div class=address><p>' . get_post_meta( $order->id, '_carrier_name', true ) . '</br>';
	            echo '' . get_post_meta( $order->id, '_carrier_number', true ) . '</p></div>'; ?>
	<?php }
	add_action( 'woocommerce_admin_order_data_after_shipping_address', 'carrier_display_in_admin' );


}