| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | declare(strict_types=1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | /* | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * This file is part of the Sonata Project package. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * (c) Thomas Rabaix <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * For the full copyright and license information, please view the LICENSE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * file that was distributed with this source code. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | namespace Sonata\SeoBundle\Block\Social; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | use GuzzleHttp\Exception\GuzzleException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | use Psr\Http\Client\ClientExceptionInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | use Psr\Http\Client\ClientInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | use Psr\Http\Message\RequestFactoryInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | use Sonata\AdminBundle\Form\FormMapper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | use Sonata\BlockBundle\Block\BlockContextInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | use Sonata\BlockBundle\Model\BlockInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | use Sonata\CoreBundle\Form\Type\ImmutableArrayType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | use Sonata\CoreBundle\Model\Metadata; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | use Symfony\Component\Form\Extension\Core\Type\CheckboxType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | use Symfony\Component\Form\Extension\Core\Type\ChoiceType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | use Symfony\Component\Form\Extension\Core\Type\IntegerType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | use Symfony\Component\Form\Extension\Core\Type\TextareaType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | use Symfony\Component\Form\Extension\Core\Type\TextType; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | use Symfony\Component\HttpFoundation\Response; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | use Symfony\Component\OptionsResolver\OptionsResolver; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  * This block service allows to embed a tweet by requesting the Twitter API. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  * @see https://dev.twitter.com/docs/api/1/get/statuses/oembed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  * @author Hugo Briand <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | class TwitterEmbedTweetBlockService extends BaseTwitterButtonBlockService | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |     public const TWITTER_OEMBED_URI = 'https://api.twitter.com/1/statuses/oembed.json'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |     private const TWEET_URL_PATTERN = '%^(https://)(www.)?(twitter.com/)(.*)(/status)(es)?(/)([0-9]*)$%i'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |     private const TWEET_ID_PATTERN = '%^([0-9]*)$%'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |      * @var ClientInterface|null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |     private $httpClient; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * @var RequestFactoryInterface|null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     private $messageFactory; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |     public function __construct( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |         ?string $name, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |         EngineInterface $templating, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |         ClientInterface $httpClient = null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         RequestFactoryInterface $messageFactory = null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |     ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |         parent::__construct($name, $templating); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |         $this->httpClient = $httpClient; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |         $this->messageFactory = $messageFactory; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 68 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 69 |  |  |     public function execute(BlockContextInterface $blockContext, Response $response = null) | 
            
                                                                        
                            
            
                                    
            
            
                | 70 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 71 |  |  |         return $this->renderResponse($blockContext->getTemplate(), [ | 
            
                                                                        
                            
            
                                    
            
            
                | 72 |  |  |             'block' => $blockContext->getBlock(), | 
            
                                                                        
                            
            
                                    
            
            
                | 73 |  |  |             'tweet' => $this->loadTweet($blockContext), | 
            
                                                                        
                            
            
                                    
            
            
                | 74 |  |  |         ], $response); | 
            
                                                                        
                            
            
                                    
            
            
                | 75 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |     public function configureSettings(OptionsResolver $resolver): void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |         $resolver->setDefaults([ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |             'template' => '@SonataSeo/Block/block_twitter_embed.html.twig', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |             'tweet' => '', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |             'maxwidth' => null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |             'hide_media' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |             'hide_thread' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |             'omit_script' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |             'align' => 'none', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |             'related' => null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |             'lang' => null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |         ]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |     public function buildEditForm(FormMapper $form, BlockInterface $block): void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |         $form->add('settings', ImmutableArrayType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |             'keys' => [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |                 ['tweet', TextareaType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |                     'required' => true, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |                     'label' => 'form.label_tweet', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |                     'sonata_help' => 'form.help_tweet', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |                 ['maxwidth', IntegerType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |                     'required' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |                     'label' => 'form.label_maxwidth', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |                     'sonata_help' => 'form.help_maxwidth', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |                 ['hide_media', CheckboxType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |                     'required' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |                     'label' => 'form.label_hide_media', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |                     'sonata_help' => 'form.help_hide_media', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |                 ['hide_thread', CheckboxType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |                     'required' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |                     'label' => 'form.label_hide_thread', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |                     'sonata_help' => 'form.help_hide_thread', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |                 ['omit_script', CheckboxType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |                     'required' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |                     'label' => 'form.label_omit_script', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |                     'sonata_help' => 'form.help_omit_script', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |                 ['align', ChoiceType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |                     'required' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |                     'choices' => [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |                         'left' => 'form.label_align_left', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |                         'right' => 'form.label_align_right', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |                         'center' => 'form.label_align_center', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |                         'none' => 'form.label_align_none', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |                     ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |                     'label' => 'form.label_align', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |                 ['related', TextType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |                     'required' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |                     'label' => 'form.label_related', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |                     'sonata_help' => 'form.help_related', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |                 ['lang', ChoiceType::class, [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |                     'required' => true, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |                     'choices' => $this->languageList, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |                     'label' => 'form.label_lang', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |                 ]], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |             ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |             'translation_domain' => 'SonataSeoBundle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |         ]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |     public function getBlockMetadata($code = null) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |         return new Metadata($this->getName(), (null !== $code ? $code : $this->getName()), false, 'SonataSeoBundle', [ | 
                            
                    |  |  |  | 
                                                                                        
                                                                                            
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |             'class' => 'fa fa-twitter', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |         ]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |      * Returns supported API parameters from settings. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |      * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |     protected function getSupportedApiParams() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |         return [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |             'maxwidth', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |             'hide_media', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |             'hide_thread', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |             'omit_script', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |             'align', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |             'related', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |             'lang', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |             'url', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |             'id', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |         ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |      * Builds the API query URI based on $settings. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |      * @param bool $uriMatched | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |      * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |     protected function buildUri($uriMatched, array $settings) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |         $apiParams = $settings; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |         $supportedParams = $this->getSupportedApiParams(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |         if ($uriMatched) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |             // We matched the uri | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |             $apiParams['url'] = $settings['tweet']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |         } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |             $apiParams['id'] = $settings['tweet']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |         unset($apiParams['tweet']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |         $parameters = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |         foreach ($apiParams as $key => $value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |             if ($value && \in_array($key, $supportedParams, true)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  |                 $parameters[] = $key.'='.$value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |         return sprintf('%s?%s', self::TWITTER_OEMBED_URI, implode('&', $parameters)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |      * Loads twitter tweet. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |     private function loadTweet(BlockContextInterface $blockContext): ?string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |         $uriMatched = preg_match(self::TWEET_URL_PATTERN, $blockContext->getSetting('tweet')); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |         if (!$uriMatched || !preg_match(self::TWEET_ID_PATTERN, $blockContext->getSetting('tweet'))) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |             return null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |         if (null !== $this->httpClient && null !== $this->messageFactory) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |             try { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |                 $response = $this->httpClient->sendRequest( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |                     $this->messageFactory->createRequest( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |                         'GET', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |                         $this->buildUri($uriMatched, $blockContext->getSettings()) | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |                     ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |                 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |             } catch (ClientExceptionInterface $e) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |                 // log error | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |                 return null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |             $apiTweet = json_decode($response->getBody(), true); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |             return $apiTweet['html']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  |         // NEXT_MAJOR: Remove the old guzzle implementation | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |         // We matched an URL or an ID, we'll need to ask the API | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  |         if (false === class_exists('GuzzleHttp\Client')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  |             throw new \RuntimeException( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  |                 'The guzzle http client library is required to call the Twitter API.'. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |                 'Make sure to add psr/http-client or guzzlehttp/guzzle to your composer.json.' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  |             ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |         @trigger_error( | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  |             'The direct Guzzle implementation is deprecated since 2.x and will be removed with the next major release.', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  |             E_USER_DEPRECATED | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |         ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  |         // TODO cache API result | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |         $client = new \GuzzleHttp\Client(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  |         $client->setConfig(['curl.options' => [CURLOPT_CONNECTTIMEOUT_MS => 1000]]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  |         try { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  |             $request = $client->get($this->buildUri($uriMatched, $blockContext->getSettings())); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  |             $apiTweet = json_decode($request->send()->getBody(true), true); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  |             return $apiTweet['html']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  |         } catch (GuzzleException $e) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  |             // log error | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  |             return null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  |         // END NEXT_MAJOR | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 263 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 264 |  |  |  | 
            
                        
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.