<?php
App::uses('AppModel', 'Model');

class ServerTag extends AppModel
{
    public $actsAs = array('Containable');

    public $validate = array(
        'server_id' => array(
            'valueNotEmpty' => array(
                'rule' => array('valueNotEmpty'),
            ),
        ),
        'tag_id' => array(
            'valueNotEmpty' => array(
                'rule' => array('valueNotEmpty'),
            ),
        ),
    );

    public $belongsTo = array(
        'Server',
        'Tag'
    );

    public function attachTagToServer($server_id, $tag_id)
    {
        $existingAssociation = $this->find('first', array(
            'recursive' => -1,
            'conditions' => array(
                'tag_id' => $tag_id,
                'server_id' => $server_id
            )
        ));
        if (empty($existingAssociation)) {
            $this->create();
            if (!$this->save(array('server_id' => $server_id, 'tag_id' => $tag_id))) {
                return false;
            }
        }
        return true;
    }
}