<?php defined('SYSPATH') or die('No direct access allowed.');

/**
 * Kohana ORM LDAP Extension
 *
 * @package    LDAP/ORM
 * @category   Helpers
 * @author     Deon George
 * @copyright  (c) 2013 phpLDAPadmin Development Team
 * @license    http://dev.phpldapadmin.org/license.html
 */
abstract class Kohana_ORM_LDAP extends ORM {
	protected $_disable_wild_select = TRUE;
	protected $_disable_join_table_name = TRUE;
	protected $_primary_key = 'dn';

	public function __construct($id = NULL) {
		// We'll process our $id
		parent::__construct(NULL);

		if (empty($this->_cast_data) AND $id) {
			if (is_array($id)) {
				// Passing an array of column => values
				foreach ($id as $column => $value)
					$this->where($column, '=', $value);

				$this->find();

			} else {
				// Passing the primary key
				$this->base($id)->find();
			}
		}
	}

	/**
	 * Initializes the Database Builder to given query type
	 *
	 * @param integer $type Type of Database query
	 * @return ORM
	 */
	protected function _build($type) {
		// Construct new builder object based on query type
		switch ($type) {
			case Database::SELECT:
				$this->_db_builder = new Database_LDAP_Search($this->_db,NULL);
				break;

			default:
				throw HTTP_Exception::factory(501,'Unknown type :type',array(':type'=>$type));
		}

		// Process pending database method calls
		foreach ($this->_db_pending as $method) {
			$name = $method['name'];
			$args = $method['args'];

			$this->_db_applied[$name] = $name;

			call_user_func_array(array($this->_db_builder, $name), $args);
		}

		return $this;
	}

	protected function _initialize() {
		parent::_initialize();

		// Check if this model has already been initialized
		if ($init = Arr::get(ORM::$_init_cache, $this->_object_name, FALSE)) {

			// We need to make sure that our _db is an LDAP DB source.
			if ( ! is_object($this->_db) OR ! $this->_db instanceof LDAP) {
				// Get database instance
				$init['_db'] = LDAP::factory('user',NULL,$this->_db_group);
			}

			ORM::$_init_cache[$this->_object_name] = $init;
			$this->_db = $init['_db'];
		}
	}

	public function base($value) {
		// Add pending database call which is executed after query type is determined
		$this->_db_pending[] = array(
			'name' => 'base',
			'args' => array(array($value)),
		);

		return $this;
	}
}
?>