Meup\Bundle\TagcommanderBundle\Twig\TagcommanderExtension

Complexity

Total Complexity

21

Size/Duplication

Total Lines	236
Duplicated Lines	0 %

Coupling/Cohesion

Components	2
Dependencies	9

Test Coverage

Coverage

100%

Importance

Changes	7
Bugs	1	Features	0

13 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	13	1
A	serializeWithValues()	0	15	1
A	tcVars()	0	8	1
A	addEvent()	0	10	4
A	tcEvent()	0	18	2
A	addContainer()	0	6	1
A	containerHas()	0	4	2
A	buildSrc()	0	8	2
A	buildAlternative()	0	12	2
A	tcContainer()	0	19	1
A	makeFunction()	0	10	1
A	getFunctions()	0	8	2
A	getName()	0	4	1

<?php

/**
* This file is part of the Meup TagCommander Bundle.
*
* (c) 1001pharmacies <http://github.com/1001pharmacies/tagcommander-bundle>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Meup\Bundle\TagcommanderBundle\Twig;

use Meup\Bundle\TagcommanderBundle\EventDispatcher\Event\DeployContainer;
use Meup\Bundle\TagcommanderBundle\EventDispatcher\Event\Track;
use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\Serializer\Encoder\JsonEncoder;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Serializer;

/**
 *
 */
class TagcommanderExtension extends \Twig_Extension
{
    /**
     * @var ParameterBagInterface
     */
    protected $datalayer;

    /**
     * @var EventDispatcherInterface
     */
    protected $dispatcher;

    /**
     * @var string
     */
    protected $tcVars;

    /**
     * @var array
     */
    protected $events = array();

    /**
     * @var array
     */
    protected $containers = array();

    /**
     * @var string
     */
    protected $defaultEvent = null;

    /**
     * @var Serializer
     */
    protected $serializer;

    /**
     * @var array
     */
    static protected $twigFunctions = array(
        'tc_vars'      => 'tcVars',
        'tc_container' => 'tcContainer',
        'tc_event'     => 'tcEvent',
    );

    /**
     * @param ParameterBagInterface $datalayer
     * @param EventDispatcherInterface $dispatcher
     * @param string $tcVars
     */
    public function __construct(
        ParameterBagInterface $datalayer,
        EventDispatcherInterface $dispatcher,
        $tcVars = 'tc_vars'
    ) {
        $this->datalayer     = $datalayer;
        $this->dispatcher    = $dispatcher;
        $this->tcVars        = $tcVars;
        $this->serializer    = new Serializer(
            array(new ObjectNormalizer()),
            array(new JsonEncoder())
        );
    }

    /**
     * @return string|boolean|integer|double|null
     */
    protected function serializeWithValues($values = array())
    {
        $datalayer = clone $this->datalayer;

        return $this
            ->serializer
            ->serialize(
                array_merge(
                    $datalayer->all(),
                    $values
                ),
                'json'
            )
        ;
    }

    /**
     * @param Array $values
     * @return string
     */
    public function tcVars($values = array())
    {
        return sprintf(
            '<script type="text/javascript" async>var %s = %s;</script>',
            $this->tcVars,
            $this->serializeWithValues($values)
        );
    }

    /**
     * @param array $event
     * @param boolean $setAsDefault
     * @return self
     */
    public function addEvent($event, $setAsDefault = false)
    {
        $this->events[$event['name']] = $event;

        if ($setAsDefault || (!$setAsDefault && !$this->defaultEvent)) {
            $this->defaultEvent = $event['name'];
        }

        return $this;
    }

    /**
     * @param string $eventName
     * @param array $values
     * @param string|null $tracker
     * @return string
     */
    public function tcEvent($eventName, $values = array(), $tracker = null)
    {
        if (is_null($tracker)) {
            $tracker = $this->defaultEvent;
        }

        $function = $this->events[$tracker]['function'];

        $event = new Track($tracker, $eventName, array_merge($this->datalayer->all(), $values));
        $this->dispatcher->dispatch('tc_event', $event);

        return sprintf(
            "%s('%s', %s);",
            $function,
            $eventName,
            $this->serializeWithValues($values)
        );
    }

    /**
     * @param array $container
     * @return self
     */
    public function addContainer($container)
    {
        $this->containers[$container['name']] = $container;

        return $this;
    }

    private function containerHas($container, $parameterName)
    {
        return array_key_exists($parameterName, $container) && !empty($container[$parameterName]);
    }

    private function buildSrc($container)
    {
        $src = $container['script'];
        if ($this->containerHas($container, 'version')) {
            $src .= sprintf('?%s', $container['version']);
        }
        return sprintf('<script type="text/javascript" src="%s" async></script>', $src);
    }

    private function buildAlternative($container)
    {
        $result = '';
        if ($this->containerHas($container, 'alternative')) {
            $result .= sprintf(
                '<noscript><iframe src="%s" width="1" height="1" rel="noindex,nofollow" sandbox="%s"></iframe></noscript>',

This line exceeds maximum limit of 120 characters; contains 123 characters

                $container['alternative'],
                'allow-same-origin allow-scripts'
            );
        }
        return $result;
    }

    /**
     * @param string $containerName
     * @return string
     */
    public function tcContainer($containerName)
    {
        $container = $this->containers[$containerName];

        $this
            ->dispatcher
            ->dispatch(
                'tc_container',
                new DeployContainer(
                    $containerName,
                    $container['script'],
                    $container['version'],
                    $container['alternative']
                )
            )
        ;

        return $this->buildSrc($container).$this->buildAlternative($container);
    }

    /**
     * @param string $twigName
     * @param string $methodName
     * @return \Twig_SimpleFunction
     */
    private function makeFunction($twigName, $methodName)
    {
        return new \Twig_SimpleFunction(
            $twigName,
            array($this, $methodName),
            array(
                'is_safe' => array('html'),
            )
        );
    }

    /**
     * @return \Twig_SimpleFunction[]
     */
    public function getFunctions()
    {
        $result = array();
        foreach (self::$twigFunctions as $twigName => $methodName) {
            $result[] = $this->makeFunction($twigName, $methodName);
        }
        return $result;
    }

    /**
     * @return string
     */
    public function getName()
    {
        return 'tagcommander_extension';
    }
}