Coupon creation via code should check for duplicates

[mihaijoldis]

When you generate a coupon from the code directly perhaps we should check for duplicates ?

<?php
		$coup_creation = date( 'Y-m-d')  . " 00:00:00";
		$coup_expiration = date( 'Y-m-d', strtotime( '+1 month' ) ). " 23:59:59";
		
		$new_coupon = new WPSC_Coupon( array(
			'coupon_code'   => 'd1e1d1d12d212d', // d1e1d1d12d212d
			'value'         => '20',
			'is-percentage' => true, // true for %
			'use-once'      => true,
			'is-used'       => 0,
			'active'        => true,
			'every_product' => false,
			'start'         => $coup_creation,
			'expiry'        => $coup_expiration,
			'condition'     => array()
		) );
		
		$insert = $new_coupon->save();

If you run the code you will get multiple coupons with the same name