<?php

namespace App\Event\Form;

use Qs\Form\FixTrait;
use Qs_Form_SubForm;

class OptionItemForm extends Qs_Form_SubForm
{
    use FixTrait {
        isValid as isValidTrait;
        isValidPartial as isValidPartialTrait;
    }

    protected $_choiceList;

    protected function _initElements()
    {
        $choices = $this->_getChoices4Select();

        $this->addElement(
            'select',
            '0',
            [
                'label'        => '',
                'required'     => true,
                'multiOptions' => ['' => 'Please Select First Choice'] + $choices,
            ]
        );

        $this->addElement(
            'select',
            '1',
            [
                'label'        => '',
                'required'     => true,
                'multiOptions' => ['' => 'Please Select Second Choice'] + $choices,
            ]
        );

        foreach (['0', '1'] as $name) {
            $this->getElement($name)->getDecorator('label')->setTagOption('class', 'hidden');
        }


        return $this;
    }

    protected function _getChoices4Select()
    {
        $result = [];
        foreach ($this->getChoiceList() as $info) {
            $result[$info['id']] = $info['title'];
        }
        return $result;
    }

    public function isValid($data)
    {
        $isValid = self::isValidTrait($data);
        $isValidChoices = $this->_isValidChoices();
        return $isValid && $isValidChoices;
    }

    public function isValidPartial(array $data)
    {
        $isValid = self::isValidPartialTrait($data);
        $isValidChoices = $this->_isValidChoices();
        return $isValid && $isValidChoices;
    }

    protected function _isValidChoices()
    {
        $first = $this->getElement('0');
        $second = $this->getElement('1');
        if (!$first->hasErrors() && !$second->hasErrors() && $first->getValue() == $second->getValue()) {
            $second->addError('Choices should be different');
            return false;
        }
        return true;
    }

    public function getChoiceList()
    {
        if (null === $this->_choiceList) {
            throw new \Exception('Required option is missing "' . __CLASS__ . '"->_choiceList');
        }
        return $this->_choiceList;
    }

    public function setChoiceList($choiceList)
    {
        $this->_choiceList = $choiceList;
        return $this;
    }

}