<?php
/**
 * Extend class to add own methods as needed
 */
class DigiMinaCompetency extends ElggObject {

	/**
	 * Set attributes as needed.
	 */
	protected function initializeAttributes() {
		parent::initializeAttributes();

		$this->attributes['subtype'] = 'dmcompetency';
		$this->attributes['access_id'] = ACCESS_PUBLIC;
	}

	/**
	 * Get list of subcompetencies.
	 *
	 * @param int $limit  Limit
	 * @param int $offset Offset
	 * @param bool $count Count
	 */
	public function getSubCompetencies($limit = 10, $offset = 0, $count = false) {
        $options = array(
            'types' => 'object',
            'subtypes' => 'dmsubcompetency',
            'limit' => $limit,
            'offset' => $offset,
            'count' => $count,
			'container_guid' => $this->getGUID(),
			'order_by' => 'guid ASC'
        );

        return elgg_get_entities($options);
	}

    /**
     * Returns next competency from the same model if possible
     *
     * @return mixed
     */
    public function getNextCompetency() {
        $options = array(
            'types' => 'object',
            'subtypes' => 'dmcompetency',
            'limit' => 1,
            'container_guid' => $this->getContainerGUID(),
            'metadata_name_value_pairs' => array('name' => 'level', 'value' => ((int)$this->level + 1))
        );
        $next = elgg_get_entities_from_metadata($options);
        if (is_array($next) && sizeof($next)) {
            return $next[0];
        }
        return false;
    }

    /**
     * returns number of PerformanceLevel objects in competency
     *
     * @return int
     */
    public function getPerformanceLevelCount() {
        $level_count = 0;
        $subcompetencies = $this->getSubCompetencies(0);
        if (is_array($subcompetencies) && count($subcompetencies) > 0) {
            foreach($subcompetencies as $subcompetency) {
                $level_count += (int)$subcompetency->getPerformanceLevels(0, 0, true);
            }
        }

        return $level_count;
    }
}