Batch import of coupon codes from single column CSV

<?php

// Import coupon codes
// Thanks go out to Marius Strajeru
// Original URL: http://marius-strajeru.blogspot.nl/2010/04/create-bulk-discount-rules.html
ini_set('memory_limit', '-1');
require 'app/Mage.php';
Mage::app();

// Import CSV from ViArt format:
$handle = fopen('coupons.csv', 'r');
$cols   = array_flip(fgetcsv($handle));
while($data = fgetcsv($handle))
{
try{
        echo 'Importing coupon with code: '.$data[0].'<br />';

        createCoupon(
            $data[0],
            "New brochure",
            'cart_fixed',
            "50"
        );
    }  catch(Exception $e) {
echo "Duplicated <br>";    
           } 
}

/**
 * Import coupon
 * @param $code             String  Coupon code
 * @param $description      String  Description
 * @param $type             String  by_percent, by_fixed, cart_fixed, buy_x_get_y (not implemented)
 * @param $amount           int     The amount
 * @param array $options    Optional options (from, to)
 */
function createCoupon($code, $description, $type, $amount, $options = array())
{
    // Create coupon:
    /* @var $rule Mage_SalesRule_Model_Rule */
    $rule = Mage::getModel('salesrule/rule');
   
    $rule->setName($code);
    $rule->setCouponCode($code);
    $rule->setDescription($description);

    // Default options:
    if(!isset($options['from'])) { $options['from'] = date('Y-m-d'); }

    $rule->setFromDate($options['from']); // From date

    // To date:
    if(isset($options['to'])) {
        $rule->setToDate($options['to']);//if you need an expiration date
    }

    $rule->setUsesPerCoupon(1);//number of allowed uses for this coupon
    $rule->setUsesPerCustomer(1);//number of allowed uses for this coupon for each customer
    $rule->setCustomerGroupIds(getAllCustomerGroups());//if you want only certain groups replace getAllCustomerGroups() with an array of desired ids
    $rule->setIsActive(1);
    $rule->setStopRulesProcessing(0);//set to 1 if you want all other rules after this to not be processed
    $rule->setIsRss(0);//set to 1 if you want this rule to be public in rss
    $rule->setIsAdvanced(1);//have no idea what it means :)
    $rule->setProductIds('');
    $rule->setSortOrder(0);// order in which the rules will be applied

    $rule->setSimpleAction($type);

    $rule->setDiscountAmount($amount);//the discount amount/percent. if SimpleAction is by_percent this value must be <= 100
    $rule->setDiscountQty(0);//Maximum Qty Discount is Applied to
    $rule->setDiscountStep(0);//used for buy_x_get_y; This is X
    $rule->setSimpleFreeShipping(0);//set to 1 for Free shipping
    $rule->setApplyToShipping(1);//set to 0 if you don't want the rule to be applied to shipping
    $rule->setWebsiteIds(getAllWbsites());//if you want only certain websites replace getAllWbsites() with an array of desired ids

    $labels = array();
    $labels[0] = $description;
    $rule->setStoreLabels($labels);

    $rule->setCouponType(2);
    $rule->save();
}

/**
 * Get all customer groups
 * @return array
 */
function getAllCustomerGroups(){
    //get all customer groups
    $customerGroups = Mage::getModel('customer/group')->getCollection();
    $groups = array();
    foreach ($customerGroups as $group){
        $groups[] = $group->getId();
    }
    return $groups;
}

/**
 * Get all websites
 * @return array
 */
function getAllWbsites(){
    //get all wabsites
    $websites = Mage::getModel('core/website')->getCollection();
    $websiteIds = array();
    foreach ($websites as $website){
        $websiteIds[] = $website->getId();
    }
    return $websiteIds;
}