Woo Subscription code

woo-subs.php

<?php

/**
 * RAF & Woocommerce Subscription 
 *
 * @since    3.0.0
 */
$gens_subs = esc_attr(get_option("gens_raf_subscription"));
$is_active = $gens_subs === "1" || $gens_subs === "yes";

if ($is_active) {
    add_filter('wcs_new_order_created', 'gens_renewal_order_created', 10, 2);
}

function gens_renewal_order_created($order, $subscription)
{
    $gens_use_all_coupons = get_option("gens_raf_subscription_all_coupons");
    $gens_use_all_coupons = $gens_use_all_coupons === "yes" || $gens_use_all_coupons === "1";
    $gens_exclude_shipping = get_option("gens_raf_subscription_exclude_shipping");
    $gens_exclude_shipping = $gens_exclude_shipping === "yes" || $gens_exclude_shipping === "1";
    $partial_use = get_option("gens_raf_subscription_partial_use") === "1";

    $user_id = $order->get_user_id();
    $user_info = get_userdata($user_id);
    $user_email = $user_info->user_email;
    // Prevent empty emails.
    if (empty($user_email)) {
        return $order;
    }
    // Order Amount
    $order_total = $order->get_total() - $order->get_total_tax();
    if ($gens_exclude_shipping) {
        $order_total = $order_total - $order->get_total_shipping() - $order->get_shipping_tax();
    }

    $args = array(
        'posts_per_page'   => apply_filters('wpgens_subscription_renewal_coupons_number', 999),
        'post_type'        => 'shop_coupon',
        'post_status'      => 'publish',
        'meta_query' => array(
            'relation' => 'AND',
            array(
                'key' => 'customer_email',
                'value' => $user_email,
                'compare' => 'LIKE'
            ),
            array(
                'key' => 'usage_count',
                'value' => 1,
                'type' => 'numeric',
                'compare' => '<'
            )
        )
    );
    $coupons = get_posts($args);

    if (empty($coupons)) {
        return $order;
    }

    $availableCoupons = [];
    $order_items = $order->get_items();

    foreach ($coupons as $coupon) {
        $couponUsage = get_post_meta($coupon->ID, 'usage_count', true);
        $usageLimit = get_post_meta($coupon->ID, 'usage_limit', true);
        if (($couponUsage < $usageLimit || $usageLimit === '') && substr($coupon->post_title, 0, 3) === "RAF") {
            $wc_coupon = new WC_Coupon($coupon->ID);
            
            $eligible_items_total = 0;
            foreach ($order_items as $item) {
                $product = $item->get_product();
                if ($wc_coupon->is_valid_for_product($product) || $wc_coupon->is_valid_for_cart()) {
                    $eligible_items_total += $item->get_total();
                }
            }

            if ($eligible_items_total > 0) {
                $coupon_data = array(
                    'coupon' => $wc_coupon,
                    'eligible_total' => $eligible_items_total
                );
                array_push($availableCoupons, $coupon_data);
            }
        }
    }

    if (empty($availableCoupons)) {
        return $order;
    }

    $total_value = 0;
    foreach ($availableCoupons as $coupon_data) {
        $coupons_obj = $coupon_data['coupon'];
        $eligible_total = $coupon_data['eligible_total'];
        $coupon_amount = $coupons_obj->get_amount();

        $type = strpos($coupons_obj->get_discount_type(), "percent") !== false ? "percent" : "fixed";
        if ($type === "percent") {
            $coupon_amount = $eligible_total * ($coupon_amount / 100);
        } else {
            // For fixed discounts, ensure we don't apply more than the eligible total
            $coupon_amount = min($coupon_amount, $eligible_total);
        }

        $total_value = $total_value + $coupon_amount;

        if ($total_value >= $order_total) {
            // If its set to use coupon partially.
            if ($partial_use && $total_value > $order_total) {
                $coupons_obj->set_amount($total_value - $order_total);
                $coupons_obj->save();
            } else {
                $coupons_obj->set_usage_count($coupons_obj->get_usage_count() + 1);
                $coupons_obj->save();
            }
            break;
        }

        $coupons_obj->set_usage_count($coupons_obj->get_usage_count() + 1);
        $coupons_obj->save();

        // Exit if its not set to use all coupons.
        if (!$gens_use_all_coupons) {
            break;
        }
    }
    // Check to make sure discount is not bigger than order
    if ($total_value > $order_total) {
        $total_value = $order_total;
    }
    if ($total_value > 0) {
        gens_renewal_order_apply_discount($order, $total_value);
    }

    $order_id = (version_compare(WC_VERSION, '2.7', '<')) ? $order->id : $order->get_id();

    do_action('new_raf_data', 'subscription_renewal', array('user' => $user_id, 'order' => $order_id));

    return $order;
}

function gens_renewal_order_apply_discount($order, $amount)
{
    $item = new WC_Order_Item_Fee();
    $item->set_props(array(
        'name'      => __("Referral applied", "gens-raf"),
        'tax_class' => NULL,
        'total'     => -$amount,
        'total_tax' => 0,
        'tax_status' => 'none',
        'order_id'  => $order->get_id(),
    ));
    $item->save();
    $order->add_item($item);
    $order->update_taxes();
    $order->calculate_totals(true);
}

/**
 * Prevent gens referral code copying during renewals. 
 * https://docs.woocommerce.com/document/subscriptions/develop/filter-reference/
 *
 * @since    2.0.9
 */
function gens_prevent_referral_copying($order_meta_query, $to_order, $from_order)
{
    $order_meta_query .= " AND `meta_key` NOT IN ('_raf_id', '_wpgens_raf_id', '_raf_meta', '_wpgens_raf_meta')";
    return $order_meta_query;
}
add_filter('wcs_renewal_order_meta_query', 'gens_prevent_referral_copying', 10, 3);