<?php
/**
 * AJAX implementation: User_Login
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

WBClass::load('WBAjax'
    , 'WBAjax_User');

/**
 * AJAX implementation: User_Login
 *
 * @version 0.1.0
 * @package WB
 * @subpackage base
 */
class WBAjax_User_Login extends WBAjax_User
{
    /**
     * Register
     *
     * handle requests
     */
    protected function register()
    {
        return $this->doProcessForm('register');
    }

    /**
     * Login
     *
     * handle requests
     */
    protected function login()
    {
        return $this->doProcessForm('login');
    }

    protected function logout()
    {
        if ($this->user->isAuthenticated()) {
            $this->user->logout();
            WBClass::load('WBService');
            WBService::addEvent('logout');
        }
        $this->loadTemplates('anon');
        return $this->tmpl->getParsedTemplate('snippet');
    }


    /**
     * Callback on login
     *
     * Login user and add event
     *
     * @param patForms
     * @param array
     * @return bool continue or stop here
     */
    public function onLoginValid($form, $values)
    {
        $this->user->login($values);
        if (!$this->user->isAuthenticated()) {
            return true;
        }

        WBClass::load('WBService');
        WBService::addEvent('login');
        $this->loadTemplates('auth');
        return false;
    }

    /**
     * Renew password
     *
     * handle requests
     */
    protected function renewPassword()
    {
        return $this->doProcessForm('renewPassword');
    }

    /**
     * Actually call form processor
     *
     * Dispatcher to simplify request methods.
     *
     * @param string form's name
     * @return string html
     */
    private function doProcessForm($name = 'login')
    {
        if ($this->user->isAuthenticated()) {
            $this->loadTemplates('auth');
            return $this->tmpl->getParsedTemplate('snippet');
        }

        $this->loadTemplates($name);
        $this->processForm($name);
        return $this->tmpl->getParsedTemplate('snippet');
    }

   /**
    * merge form parameters
    *
    * This allows to overwrite default form parameters
    *
    * @param array $param list of form parameters
    * @return bool
    */
    protected function mergeFormParameters(&$params)
    {
        // $params['onsubmit'] =   'return user'
        return true;
    }

    /**
     * Add form rules to just created form
     *
     * - login
     * - registrations
     * - password changes
     * - password renewal request and approval
     *
     * @param patForms $form object
     * @param string name of the xml- and template-filename
     * @param array $elements list of elements current form
     * @return bool true on success
     */
    protected function insertFormRules(&$form, $name, $elements)
    {
        if ($name == 'login') {
            $loginRule  =   patForms::createRule('UserLogin');
            $form->addRule($loginRule, PATFORMS_RULE_AFTER_VALIDATION);
            return true;
        }

        if ($name == 'register' || $name == 'approverenewpassword' || $name == 'password') {
            $retypeRule =   patForms::createRule('Retype');
            /** @var $retypeRule patForms_Rule_Retype */
            $retypeRule->setFieldnames('password', 'passwordretype');
            $form->addRule($retypeRule, PATFORMS_RULE_AFTER_VALIDATION);
            return true;
        }

        if ($name == 'renewpassword') {
            $findUserRule   =   patForms::createRule('UserFind');
            $form->addRule($findUserRule, PATFORMS_RULE_AFTER_VALIDATION);
            return true;
        }
    }
}