<?php

/**
 * This code was generated by
 * \ / _    _  _|   _  _
 * | (_)\/(_)(_|\/| |(/_  v1.0.0
 * /       /
 */

namespace Twilio\Rest\Studio\V1\Flow\Engagement;

use Twilio\Deserialize;
use Twilio\Exceptions\TwilioException;
use Twilio\InstanceResource;
use Twilio\Values;
use Twilio\Version;

/**
 * PLEASE NOTE that this class contains beta products that are subject to change. Use them with caution.
 *
 * @property string    sid
 * @property string    accountSid
 * @property string    flowSid
 * @property string    engagementSid
 * @property string    name
 * @property array     context
 * @property string    transitionedFrom
 * @property string    transitionedTo
 * @property \DateTime dateCreated
 * @property \DateTime dateUpdated
 * @property string    url
 * @property array     links
 */
class StepInstance extends InstanceResource
{
    protected $_stepContext = null;

    /**
     * Initialize the StepInstance
     *
     * @param \Twilio\Version $version       Version that contains the resource
     * @param mixed[]         $payload       The response payload
     * @param string          $flowSid       The flow_sid
     * @param string          $engagementSid The engagement_sid
     * @param string          $sid           The sid
     *
     * @return \Twilio\Rest\Studio\V1\Flow\Engagement\StepInstance
     */
    public function __construct(Version $version, array $payload, $flowSid, $engagementSid, $sid = null)
    {
        parent::__construct($version);

        // Marshaled Properties
        $this->properties = array(
            'sid'              => Values::array_get($payload, 'sid'),
            'accountSid'       => Values::array_get($payload, 'account_sid'),
            'flowSid'          => Values::array_get($payload, 'flow_sid'),
            'engagementSid'    => Values::array_get($payload, 'engagement_sid'),
            'name'             => Values::array_get($payload, 'name'),
            'context'          => Values::array_get($payload, 'context'),
            'transitionedFrom' => Values::array_get($payload, 'transitioned_from'),
            'transitionedTo'   => Values::array_get($payload, 'transitioned_to'),
            'dateCreated'      => Deserialize::dateTime(Values::array_get($payload, 'date_created')),
            'dateUpdated'      => Deserialize::dateTime(Values::array_get($payload, 'date_updated')),
            'url'              => Values::array_get($payload, 'url'),
            'links'            => Values::array_get($payload, 'links'),
        );

        $this->solution = array(
            'flowSid'       => $flowSid,
            'engagementSid' => $engagementSid,
            'sid'           => $sid ?: $this->properties['sid'],
        );
    }

    /**
     * Generate an instance context for the instance, the context is capable of
     * performing various actions.  All instance actions are proxied to the context
     *
     * @return \Twilio\Rest\Studio\V1\Flow\Engagement\StepContext Context for this
     *                                                            StepInstance
     */
    protected function proxy()
    {
        if (!$this->context) {
            $this->context = new StepContext(
                $this->version,
                $this->solution['flowSid'],
                $this->solution['engagementSid'],
                $this->solution['sid']
            );
        }

        return $this->context;
    }

    /**
     * Fetch a StepInstance
     *
     * @return StepInstance Fetched StepInstance
     */
    public function fetch()
    {
        return $this->proxy()->fetch();
    }

    /**
     * Access the stepContext
     *
     * @return \Twilio\Rest\Studio\V1\Flow\Engagement\Step\StepContextList
     */
    protected function getStepContext()
    {
        return $this->proxy()->stepContext;
    }

    /**
     * Magic getter to access properties
     *
     * @param string $name Property to access
     *
     * @return mixed The requested property
     * @throws TwilioException For unknown properties
     */
    public function __get($name)
    {
        if (array_key_exists($name, $this->properties)) {
            return $this->properties[$name];
        }

        if (property_exists($this, '_'.$name)) {
            $method = 'get'.ucfirst($name);
            return $this->$method();
        }

        throw new TwilioException('Unknown property: '.$name);
    }

    /**
     * Provide a friendly representation
     *
     * @return string Machine friendly representation
     */
    public function __toString()
    {
        $context = array();
        foreach ($this->solution as $key => $value) {
            $context[] = "$key=$value";
        }
        return '[Twilio.Studio.V1.StepInstance '.implode(' ', $context).']';
    }
}