Create Couponcode Dynamically

function.php

<?php
// Code Description given in https://webinwordpress.com/uncategorized/how-to-create-and-apply-coupon-code-programmatically-in-woocoomerce/

$coupon_code = 'WEBINWORDPRESS.COM'; // Code - this can be a dynamic string like $UserRole.$order
$amount = '20'; // Amount
$discount_type = 'percent'; // Types are : fixed_cart, percent, fixed_product, percent_product

$coupon = array(
    'post_title' => $coupon_code,
    'post_content' => '',
    'post_status' => 'publish',
    'post_author' => 10,  //user_id dynamic value, usually admin user id
    'post_type'     => 'shop_coupon' 
);    

$new_coupon_id = wp_insert_post( $coupon );

// Add post meta
update_post_meta( $new_coupon_id, 'discount_type', $discount_type );
update_post_meta( $new_coupon_id, 'coupon_amount', $amount );
update_post_meta( $new_coupon_id, 'individual_use', 'yes' );
update_post_meta( $new_coupon_id, 'product_ids', '' );
update_post_meta( $new_coupon_id, 'exclude_product_ids', '' );
update_post_meta( $new_coupon_id, 'usage_limit', '1' );
update_post_meta( $new_coupon_id, 'expiry_date', '' );
update_post_meta( $new_coupon_id, 'apply_before_tax', 'no' );
update_post_meta( $new_coupon_id, 'free_shipping', 'no' );      
update_post_meta( $new_coupon_id, 'exclude_sale_items', 'no' );     
update_post_meta( $new_coupon_id, 'free_shipping', 'no' );      
update_post_meta( $new_coupon_id, 'product_categories', '' );       
update_post_meta( $new_coupon_id, 'exclude_product_categories', '' );       
update_post_meta( $new_coupon_id, 'minimum_amount', '' );       
update_post_meta( $new_coupon_id, 'customer_email', '' );   

// Refer https://woocommerce.github.io/code-reference/classes/WC-Coupon.html

// Code Description given in https://webinwordpress.com/uncategorized/how-to-create-and-apply-coupon-code-programmatically-in-woocoomerce/

?>