TwigServiceProvider.php

<?php

namespace TwigModule;

use Interop\Container\ContainerInterface;
use Interop\Container\ServiceProvider\ServiceProvider;
use Puli\Repository\Api\ResourceRepository;
use Puli\TwigExtension\PuliExtension;
use Puli\TwigExtension\PuliTemplateLoader;
use Puli\UrlGenerator\Api\UrlGenerator;
use Twig_Environment;

class TwigServiceProvider implements ServiceProvider
{
    public static function getServices()
    {
        return [
            Twig_Environment::class => 'getTwig',
            'twig.options' => 'getOptions',
            'twig.extensions' => 'getExtensions',
            'twig.loader' => 'getLoader',

            // Puli integration
            PuliExtension::class => 'getPuliExtension',
        ];
    }

    public function getTwig(ContainerInterface $container)
    {
        $loader = $container->get('twig.loader');
        $options = $container->get('twig.options');

        $twig = new Twig_Environment($loader, $options);

        $twig->setExtensions($container->get('twig.extensions'));

        return $twig;
    }

    /**
     * Twig options
     *
     * Override the entry to set options.
     * @see http://twig.sensiolabs.org/doc/api.html#environment-options
     */
    public function getOptions()
    {
        return [];
    }

    /**
     * Returns the list of Twig extensions to use.
     *
     * Override the entry to register additional extensions.
     *
     * @return \Twig_ExtensionInterface[]
     */
    public function getExtensions(ContainerInterface $container)
    {
        return [
            $container->get(PuliExtension::class),
        ];
    }

    /**
     * @return \Twig_LoaderInterface
     */
    public function getLoader(ContainerInterface $container)
    {
        $resourceRepository = $container->get(ResourceRepository::class);

        return new PuliTemplateLoader($resourceRepository);
    }

    /**
     * @return PuliExtension
     */
    public function getPuliExtension(ContainerInterface $container)
    {
        $resourceRepository = $container->get(ResourceRepository::class);
        $urlGenerator = null;
        if ($container->has(UrlGenerator::class)) {
            $urlGenerator = $container->get(UrlGenerator::class);
        }

        return new PuliExtension($resourceRepository, $urlGenerator);
    }
}