/**
* Find the reward that has to be reached by the user.
*
* <code>
* $keys = array(
* 'user_id' => 1,
* 'points_id' => 2
* );
* $points = new Gamification\User\Points\Points(\JFactory::getDbo());
* $points->load($keys);
*
* $rewardSeeker = new Gamification\User\Reward\RewardPointsSeeker(\JFactory::getDbo());
* $rewardSeeker->setUserPoints($points);
*
* $newReward = $rewardSeeker->find();
* </code>
*
* @throws \RuntimeException
*
* @return null|BasicReward
*/
public function find()
{
// Get basic rewards based on specific points.
$options = array('points_id' => (int) $this->userPoints->getPointsId(), 'state' => (int) Constants::PUBLISHED);
$rewards = new BasicRewards($this->db);
$rewards->load($options);
$results = $rewards->toArray();
/** @var array $results */
$rewardData = array();
for ($i = 0, $max = count($results); $i < $max; $i++) {
// Get current item
$current = array_key_exists($i, $results) ? $results[$i] : array();
/** @var $current array */
// Get next item
$n = $i + 1;
$next = array_key_exists($n, $results) ? $results[$n] : array();
/** @var $next array */
if (count($next) > 0) {
// Check for coincidence with next item
if ((int) $next['points_number'] === (int) $this->userPoints->getPointsNumber()) {
$rewardData = $next;
break;
}
// Check for coincidence with current item
if ((int) $current['points_number'] <= (int) $this->userPoints->getPointsNumber() and (int) $next['points_number'] > (int) $this->userPoints->getPointsNumber()) {
$rewardData = $current;
break;
}
} else {
// If there is not next item, we compare with last (current).
if ((int) $current['points_number'] <= (int) $this->userPoints->getPointsNumber()) {
$rewardData = $current;
break;
}
}
}
// Create a reward object.
$reward = null;
if (count($rewardData) > 0) {
$reward = new BasicReward($this->db);
$reward->bind($rewardData);
}
return $reward;
}
/**
* Change user reward to higher one.
*
* <code>
* $context = "com_user.registration";
*
* $keys = array(
* "id" => 1,
* "group_id" => 2
* );
*
* // Create user reward object based.
* $reward = new Gamification\Reward\Reward(\JFactory::getDbo());
* $reward->load($keys);
*
* $rewardManager = new Gamification\User\Reward\RewardManager(\JFactory::getDbo());
* $rewardManager->setReward($reward);
*
* if ($rewardManager->give($context, $userId, $options)) {
* // ...
* }
* </code>
*
* @param string $context
* @param int $userId
* @param array $options
*
* @throws \UnexpectedValueException
* @throws \RuntimeException
* @throws \InvalidArgumentException
*
* @return null|Reward
*/
public function give($context, $userId, array $options = array())
{
if (!$this->reward instanceof BasicReward) {
throw new \UnexpectedValueException('It is missing user reward object.');
}
// Check if this reward already exists in user profile.
$userProfile = new Profile($this->db);
$rewardReceived = $userProfile->isRewardReceived($this->reward, $userId);
if (!$rewardReceived) {
$data = array('user_id' => $userId, 'group_id' => $this->reward->getGroupId(), 'reward_id' => $this->reward->getId());
// Create user reward.
$userReward = new Reward(\JFactory::getDbo());
$userReward->bind($data);
// Implement JObservableInterface: Pre-processing by observers
$this->observers->update('onBeforeGiveReward', array($context, &$userReward, &$options));
$userReward->store();
// Implement JObservableInterface: Post-processing by observers
$this->observers->update('onAfterGiveReward', array($context, &$userReward, &$options));
return $userReward;
}
return null;
}
public function isRewardReceived(Reward $reward, $userId = 0)
{
if (!$userId and $this->id > 0) {
$userId = $this->id;
}
$query = $this->db->getQuery(true);
$query->select('COUNT(*)')->from($this->db->quoteName('#__gfy_userrewards', 'a'))->where('a.reward_id = ' . (int) $reward->getId())->where('a.user_id = ' . (int) $userId);
$this->db->setQuery($query, 0, 1);
return (bool) $this->db->loadResult();
}
/**
* Return the rewards as array with objects.
*
* <code>
* $options = array(
* "ids" => array(1,2,3,4,5)
* );
*
* $rewards = new Gamification\Reward\Rewards(\JFactory::getDbo());
* $rewards->load($options);
*
* $rewards = $rewards->getRewards();
* </code>
*
* @return array
*/
public function getRewards()
{
$results = array();
$i = 0;
foreach ($this->items as $item) {
$reward = new Reward($this->db);
$reward->bind($item);
$results[$i] = $reward;
$i++;
}
return $results;
}
