<?php
/**
 * Installation script for tvoe rating custom
 */
$installer = $this;
$installer->startSetup();

function addOptions($rating) {
    for ($i = 1; $i <= 5; $i++) {
        Mage::getModel('rating/rating_option')->setData(
            array(
                'rating_id' =>$rating->getId(),
                'code' => $i,
                'value' => $i,
                'position' => $i
            )
        )->save();
    }
}

$ratingTvoe = array(
    'rating_code' => 'tvoe_summary',
    'entity_id' => 1,
    'stores' => array(Mage::app()->getStore()->getId()),
    'position' => 0
);

// Create rating
$rating = Mage::getModel('rating/rating')->getCollection()->addFieldToFilter('rating_code', 'tvoe')->getFirstItem();

if ($rating->getId()) {
    $rating->setRatingCode($ratingTvoe['rating_code']);
    $rating->setEntityId($ratingTvoe['entity_id']);
    $rating->setStores($ratingTvoe['stores']);
    $rating->setPosition(0);

    if (!count($rating->getOptions())) {
        addOptions($rating);
    }
} else {

    $rating = Mage::getModel('rating/rating')->setData($ratingTvoe)->save();
    if (!count($rating->getOptions())) {
        addOptions($rating);
    }
}

$installer->endSetup();