Shipping Options plugin

th_shipping_options.php

<?php
/*
Plugin Name: TH Shipping Options
Plugin URI: NA
Description: TH Shipping Options plugin
Version: 1.0.0
Author: Vj
Author URI: www.wooforce.com
*/

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

if ( ! class_exists( 'TH_Shipping_Options' ) ) {
	class TH_Shipping_Options {
		/**
		 * Constructor for your shipping class
		 *
		 * @access public
		 * @return void
		 */
		public function __construct() {
			// take care of anything else that needs to be done immediately upon plugin instantiation, here in the constructor.
			add_filter( 'woocommerce_cart_shipping_packages', array( &$this, 'cart_shipping_packages') );
			add_filter( 'woocommerce_shipping_package_name', array( &$this, 'shipping_package_name'), 10, 3 );
		}

		function cart_shipping_packages( $packages ) {
			// Reset the packages
			$packages = array();
			$vendor_items_map = array();
			foreach ( WC()->cart->get_cart() as $item ) {
				$product_id = $item['product_id'];
				if ( $item['data']->needs_shipping() ) {
					$vendor_id = WC_Product_Vendors_Utils::get_vendor_id_from_product( $product_id );
					if ( $vendor_id ) {
						$vendor_items_map[ $vendor_id ][] = $item;
					}
					// No product vendor associated with item.
					else {
						$vendor_items_map['0'][] = $item;
					}
				}
			}

			foreach ( $vendor_items_map as $key => $vendor_items ) {
				$data = array(
					'vendor_id' => $key,
					'contents' => $vendor_items,
					'contents_cost' => array_sum( wp_list_pluck( $vendor_items, 'line_total' ) ),
					'applied_coupons' => WC()->cart->applied_coupons,
					'destination' => array(
						'country' => WC()->customer->get_shipping_country(),
						'state' => WC()->customer->get_shipping_state(),
						'postcode' => WC()->customer->get_shipping_postcode(),
						'city' => WC()->customer->get_shipping_city(),
						'address' => WC()->customer->get_shipping_address(),
						'address_2' => WC()->customer->get_shipping_address_2(),
					)
				);
				// In future we could specifiy different methods here
				/*
				if ( $key == 97 ) {
					$data['ship_via'] = array( 'flat_rate', 'free_shipping' );
				}
				*/
				$packages[] = $data;
			}

			return $packages;
		}

		function shipping_package_name( $text, $i, $package ) {
			if ( ! empty( $package['vendor_id'] ) ) {
				$vendor_data = WC_Product_Vendors_Utils::get_vendor_data_by_id( $package['vendor_id'] );
				$text = 'Shipping options for ' . $vendor_data['name'];
			}
			return $text;
		}
	}

	// finally instantiate our plugin class and add it to the set of globals
	$GLOBALS['th_shipping_options_init'] = new TH_Shipping_Options();
}
// Start up this plugin
function TH_Shipping_Options() {
	global $TH_Shipping_Options;
	$TH_Shipping_Options = new TH_Shipping_Options();
}

if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ) ) ) {
	add_action( 'init', 'TH_Shipping_Options' );
}