<?php

namespace App\Event\Admin\Form;

use App\Event\Admin\Obj;
use Qs_Form;
use Qs_Exception_EmptyPropertyException;

class ChooseEventForm extends Qs_Form
{
    protected $_controllerAction = 'useEvent';

    /** @var \App\Event\Admin\Obj */
    protected $_dataObj;

    public function init()
    {
        $this->addFormRule(array($this, '_validateForm'));
        return parent::init();
    }

    protected function _initElements()
    {
        $this->_addUserElement();

        $this->addElement(
            'select',
            'eventId',
            array(
                'label'        => 'Event',
                'multiOptions' => array('' => 'Select One') + (array) $this->getDataObj()->getSignupEvents4Select(),
                'required'     => true
            )
        );

        return $this;
    }

    protected function _addUserElement()
    {
        if (($userId = (int) $this->_getData('userId'))
            && false !== ($name = \App_User_Obj::getAutocompleteItemTitle($userId))
        ) {
            $this->addElement('hidden', 'userId', array('value' => $userId));
            $this->addElement(
                'static',
                'userName',
                array(
                    'label'     => 'User Name',
                    'value'     => $name
                )
            );
        }
        return $this;
    }

    protected function _validateForm($data)
    {
        $errors = array();

        if ($eventId = $data['eventId']) {
            $event = $this->getDataObj()->setPrimaryKey($eventId)->getData();
        } else {
            // Element is required and validates using default validator
            return true;
        }

        if (empty($event)) {
            $errors['eventId'][] = 'Selected event not found';
            return $errors;
        }

        if (Obj::TYPE_REGULAR !== $event['type'] && Obj::TYPE_GROUP !== $event['type']) {
            $errors['eventId'][] = 'Selected event does not support registration';
            return $errors;
        }

        if ($event['registrationUrl']) {
            $errors['eventId'][] = 'Selected event has registration outside the site';
            return $errors;
        }

        if ($event['endDate'] < date('Y-m-d')) {
            $errors['eventId'][] = 'Registration for outdated events does not supported';
            return $errors;
        }

        if ($event['registrationLimit'] && $event['registeredCount'] >= $event['registrationLimit']) {
            $errors['eventId'][] = 'Selected event does not have free registration spots';
            return $errors;
        }

        return ($errors) ? $errors : true;
    }

    public function setDataObj(Obj $dataObj)
    {
        $this->_dataObj = $dataObj;
        return $this;
    }

    public function getDataObj()
    {
        if (null == $this->_dataObj) {
            throw new Qs_Exception_EmptyPropertyException($this, '_dataObj');
        }
        return $this->_dataObj;
    }

}