Create Product Bundles by adding coupons to cart dynamically based on products in the cart

A while back I was having a conflict between the WooCommerce Product Bundles plugin and the Click & Pledge payment gateway. The issue was that they were not supporting passing in the correct, updated price based on the bundle product settings and said that they would not be supporting the feature at the time. Good news is, I believe they have since added support for it so I’m reverting to WooCommerce Bundle products now.

However, this is still a solution that will work to create the same basic effect for free should anyone be looking for a free code-based solution to WooCommerce Product Bundles.

Here is the code that powers this functionality:

	<?php

	/**
	* Hire Jordan Smith // Create Product Bundles by adding coupons to cart dynamically based on products in the cart
	*
	* @version 1.0
	* @author Jordan Smith <jordan@hirejordansmith.com>
	* @license GPL-2.0+
	* @link http://hirejordansmith.com/...
	* @copyright 2016 - Hire Jordan Smith
	*/

	add_action( 'woocommerce_before_cart', 'hjs_add_hat_panty_bundle_coupon' );
	function hjs_add_hat_panty_bundle_coupon() {

	global $woocommerce;

	// Replace 'hatpantybundle2016' with your coupon code
	$coupon_code = 'hatpantybundle2016';

	// Create Empty Array
	$cart_product_ids = [];

	// Build Array of Product Id's for Cart Products
	foreach ($woocommerce->cart->cart_contents as $key => $ids ) {
	$cart_product_ids[] = $ids['product_id'];
	}

	// Numbers represent Product IDs
	if (in_array( 1507, $cart_product_ids) && in_array(1320, $cart_product_ids)) {

	if ( $woocommerce->cart->has_discount( $coupon_code ) ) return;

	foreach ($woocommerce->cart->cart_contents as $key => $values ) {

	$autocoupon = array(1507, 1320);

	if (in_array( $values['product_id'], $autocoupon) ){

	$woocommerce->cart->add_discount( $coupon_code );

	wc_print_notices();

	if ( $woocommerce->cart->has_discount( $coupon_code ) ) return;

	}

	}

	} else {

	// This will automatically remove the coupon if it's already added
	// I had this in place because I was doing more than one of these so it resets the cart
	$woocommerce->cart->remove_coupon( $coupon_code );

	}

	}