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<?php

// http://edd.wp-a2z.org/oik_api/edd_store_discount/
// https://gist.github.com/renventura/9a645b904279862614a4


function create_coupon_edd3466( $args ) {
    if( ! is_callable( 'edd_store_discount' ) ) {
        return;
    }
    
    // edd_discount_exists( $CODE );
    
    $meta = wp_parse_args( $args, array(
        'name'              => $coupon_code,
        'code'              => $coupon_code,
        'type'              => $type,
        'amount'            => $amount,
        'excluded_products' => array(),
        'expiration'        => '',
        'is_not_global'     => false,
        'is_single_use'     => false,
        'max_uses'          => '',
        'min_price'         => '',
        'product_condition' => '',
        'product_reqs'      => array(),
        'start'             => '',
        'uses'              => '',
    ) );
    // EDD will set it's own defaults in the edd_store_discount() so let's filter out our own empty defaults (their just here for easier reference)
    $meta = array_filter( $meta );
    // EDD takes a $details array which has some different keys than the meta, let's map the keys to the expected format
    $edd_post_keys = array(
        'max_uses'          => 'max',
        'product_reqs'      => 'products',
        'excluded_products' => 'excluded-products',
        'is_not_global'     => 'not_global',
        'is_single_use'     => 'use_once'
    );
    foreach( $meta as $key => $value ) {
        $mod_key = rgar( $edd_post_keys, $key );
        if( $mod_key ) {
            $meta[$mod_key] = $value;
        }
    }
    $coupon_ID = edd_store_discount( $meta );
}