<?php

namespace Questionnaire\Model;

class Question
{
    protected $id;

    protected $title;

    protected $choices = array();

    protected $required = array();

    public function hydrate(array $data)
    {
        foreach ($data as $k => $v) {
            $setter = 'set'.ucfirst($k);

            if (method_exists($this, $setter)) {
                $this->$setter($v);
            }
        }

        return $this;
    }

    public function setId($id)
    {
        $this->id = $id;

        return $this;
    }

    public function getId()
    {
        return $this->id;
    }

    public function setTitle($title)
    {
        $this->title = $title;

        return $this;
    }

    public function getTitle()
    {
        return $this->title;
    }

    public function setChoices(array $choices)
    {
        $this->choices = $choices;

        return $this;
    }

    public function getChoices()
    {
        return $this->choices;
    }

    public function setRequired(array $required)
    {
        $this->required = $required;

        return $this;
    }

    public function getRequired()
    {
        return $this->required;
    }

    public function getRequirements()
    {
        return $this->getRequired();
    }

    public function hasRequirements()
    {
        return count($this->getRequirements()) > 0;
    }

    public function isCompatibleWithResponses(array $response)
    {
        if (!$this->hasRequirements()) {
            return true;
        }

        foreach ($response as $questionId => $response) {
            $question = QuestionPeer::retrieveQuestionById($questionId);

            if (null === $question) {
                continue;
            }

            foreach ($this->getRequirements() as $requirement) {
                list($requirementQuestionId, $requirementResponses) = $requirement;

                if ($requirementQuestionId === $questionId) {
                    if (!is_array($requirementResponses)) {
                        $requirementResponses = array($requirementResponses);
                    }

                    if (!in_array($response, $requirementResponses)) {
                        return false;
                    }
                }
            }
        }

        return true;
    }
}