Generates a unique coupon when a specific product (Bronze, Silver, or Gold Coupon) is purchased and emails it to the customer using AutomateWoo.

automatewoo-generate-coupon-on-purchase.php

/**
 * Generate a coupon when a specific product is purchased and email it to the customer.
 * @param AutomateWoo\Workflow $workflow
 */
function my_automatewoo_generate_coupon( $workflow ) {
    $order = $workflow->data_layer()->get_order();
    if ( ! $order ) {
        return;
    }

    foreach ( $order->get_items() as $item ) {
        $product_name = $item->get_name();

        if ( $product_name === 'Bronze Coupon' ) {
            $discount = 5;
            $expiry_days = 30;
        } elseif ( $product_name === 'Silver Coupon' ) {
            $discount = 10;
            $expiry_days = 90;
        } elseif ( $product_name === 'Gold Coupon' ) {
            $discount = 20;
            $expiry_days = 180;
        } else {
            continue;
        }

        $coupon_code = strtolower( str_replace( ' ', '_', $product_name ) ) . '-' . wp_generate_password( 6, false );
        $coupon = new WC_Coupon();
        $coupon->set_code( $coupon_code );
        $coupon->set_discount_type( 'percent' );
        $coupon->set_amount( $discount );
        $coupon->set_date_expires( ( new DateTime( "+$expiry_days days", wp_timezone() ) )->format( 'Y-m-d' ) );
        $coupon->set_usage_limit( 1 );
        $coupon->set_email_restrictions( [ $order->get_billing_email() ] );
        $coupon->save();

        // Email the coupon code to the customer
        wp_mail(
            $order->get_billing_email(),
            'Your Coupon Code',
            'Here is your coupon code: ' . $coupon_code
        );

        // Only one coupon per order
        break;
    }
}