WooCommerce: Individueller Rabatt pro User

/* 
    mensmaximus woocommerce discount per user 
    proof of concept
*/




add_action( 'show_user_profile', 'add_woo_user_discount' );
add_action( 'edit_user_profile', 'add_woo_user_discount' );
add_action( 'personal_options_update', 'save_woo_user_discount' );
add_action( 'edit_user_profile_update', 'save_woo_user_discount' );
add_filter( 'woocommerce_get_price', 'get_woo_user_discount', 10, 2);




function add_woo_user_discount( $user ) {
    echo '<h3>Woocommerce User Discount</h3>';
    echo '<table class="form-table"><tr>';
    echo '<th><label for="woo_user_discount">Personal Discount Rate</label></th>';
    echo '<td><input type="text" name="woo_user_discount" value="' . esc_attr( get_the_author_meta( 'woo_user_discount', $user->ID ) ) . '" class="regular-text" /></td>';
    echo '</tr></table>';
}




function save_woo_user_discount( $user_id ){
    update_user_meta( $user_id,'woo_user_discount', sanitize_text_field( $_POST['woo_user_discount'] ) );
}




function get_woo_user_discount( $price, $product ) {
    if ( is_user_logged_in() ) {
        $user = wp_get_current_user();
        $user_discount = get_the_author_meta( 'woo_user_discount', $user->ID );
        $product_price = get_post_meta( $product->id, '_regular_price', true );
        $price = $product_price - ( ( $product_price * $user_discount ) / 100 );
    }
    return $price;
}