<?php defined('SYSPATH') OR die('No direct script access.');

/**
 * Return the query search result.
 *
 * @package    Kohana/Database
 * @category   Query/Result
 * @author     Deon George
 * @copyright  (c) 2013 phpLDAPadmin Development Team
 * @license    http://dev.phpldapadmin.org/license.html
 */
abstract class Kohana_Database_LDAP_Search_Result implements ArrayAccess,Iterator,Countable {
	private $_count = 0;
	protected $result = array();
	private $_rewound = FALSE;
	private $_current_key = NULL;

	/** Countable **/

	public function count() {
		$c = 0;

		foreach ($this->result as $k=>$v)
			$c += count($v);

		return $c;
	}

	/** ArrayAccess **/

	public function offsetExists($offset) {
		return isset($this->result[$offset]);
	}

	public function offsetGet($offset) {
		return $this->result[$offset];
	}

	public function offsetSet($offset,$value) {
		if (isset($this->result[$offset]))
			$this->_count -= $this->result[$offset]->count();

		$this->result[$offset] = $value;
		$this->_count += $value->count();
	}

	public function offsetUnset($offset) {
		unset($this->result[$offset]);
	}

	/** Iterator **/

	public function current() {
		if (! $this->_rewound)
			$this->rewind();

		if (! is_object(current($this->result)))
			throw HTTP_Exception::factory(501,'The current array is not an object');

		return current($this->result)->current();
	}

	public function key() {
		return current($this->result)->key();
	}

	public function next() {
		// If our current entry has more valid entries, skip to the next one.
		if (current($this->result)->valid() AND current($this->result)->next()->valid())
			return current($this->result);

		// Skip to our next record
		next($this->result);

		// If the next record is invalid, keep jumping to find a valid record
		while (current($this->result) AND ! current($this->result)->valid())
			if (next($this->result) === FALSE)
				break;

		// Rewind our current record
		if (is_object($this->result))
			current($this->result)->rewind();

		return current($this->result);
	}

	public function rewind() {
		is_resource($this->result) ? rewind($this->result) : reset($this->result);

		current($this->result)->rewind();

		// If our current record is invalid, skip to the next one.
		if (! current($this->result)->valid())
			$this->next(FALSE);

		$this->_rewound = TRUE;
	}

	public function valid() {
		return is_array(current($this->result)) ? TRUE : (is_object(current($this->result)) ? current($this->result)->valid() : FALSE);
	}
} // End Database_LDAP_Search_Result
?>