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<?php

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/**

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* Embera.php

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* @package Embera

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* @author Michael Pratt <yo@michael-pratt.com>

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* @link http://www.michael-pratt.com/

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* For the full copyright and license information, please view the LICENSE

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* file that was distributed with this source code.

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namespace Embera;

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use Embera\Http\HttpClient;

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use Embera\Http\OembedClient;

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use Embera\Http\HttpClientInterface;

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use Embera\Html\IgnoreTags;

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use Embera\Html\ResponsiveEmbeds;

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use Embera\Provider\ProviderInterface;

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use Embera\ProviderCollection\ProviderCollectionInterface;

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use Embera\ProviderCollection\DefaultProviderCollection;

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/**

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* Embera

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* The Main Class of this library.

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class Embera

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{

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/** @var string Current Library Version */

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const VERSION = '2.0.16';

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/**

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* Constants describing how the library is

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* going to handle fake responses.

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* ALLOW_FAKE_RESPONSES is the default value.

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const ALLOW_FAKE_RESPONSES = 1;

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const DISABLE_FAKE_RESPONSES = 2;

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const ONLY_FAKE_RESPONSES = 3;

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/** @var array Configuration settings */

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protected $config = [];

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/** @var array Logged errors */

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protected $errors = [];

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/** @var array Closures to be used on oembed responses */

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protected $filters = [];

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/** @var ProviderCollectionInterface */

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protected $providerCollection;

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/** @var HttpClientInterface */

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protected $httpClient;

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/**

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* Constructor

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* @param array $config

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* @param ProviderCollectionInterface $collection

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* @param HttpClientInterface $httpClient

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* @return void

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public function __construct(array $config = [], ProviderCollectionInterface $collection = null, HttpClientInterface $httpClient = null)

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{

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$this->providerCollection = $collection;

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if (!$collection) {

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$this->providerCollection = new DefaultProviderCollection();

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}

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$this->httpClient = $httpClient;

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if (!$httpClient) {

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$this->httpClient = new HttpClient();

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}

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$this->setConfig($config);

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}

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public function setConfig(array $config = [])

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{

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$this->config = array_merge([

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'https_only' => false,

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'fake_responses' => self::ALLOW_FAKE_RESPONSES,

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'ignore_tags' => [ 'pre', 'code', 'a', 'img', 'iframe', 'oembed' ],

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'responsive' => false,

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'width' => 0,

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'height' => 0,

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'maxheight' => 0,

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'maxwidth' => 0,

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], $config);

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$this->config['maxwidth'] = max($this->config['width'], $this->config['maxwidth']);

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$this->config['maxheight'] = max($this->config['height'], $this->config['maxheight']);

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unset($this->config['height'], $this->config['width']);

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// Set the config just in case.

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$this->providerCollection->setConfig($this->config);

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$this->httpClient->setConfig($this->config);

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}

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/**

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* Embeds known/available services into the given text.

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* @param string $text

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* @return string

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public function autoEmbed($text)

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{

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if (is_string($text)) {

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$table = [];

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$providers = $this->getUrlData($text);

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foreach ($providers as $url => $response) {

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if (!empty($response['html'])) {

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$table[$url] = $response['html'];

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}

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}

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if (!empty($table)) {

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if (!empty($this->config['ignore_tags']) && strpos($text, '>') !== false) {

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$ignoreTags = new IgnoreTags($this->config['ignore_tags']);

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return $ignoreTags->replace($text, $table);

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}

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return strtr($text, $table);

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}

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} else {

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$this->errors[] = 'For auto-embedding purposes, the input must be a string';

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}

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return $text;

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}

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/**

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* Returns the oembed response from the given data.

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* @param array|string $urls An array with urls or a string with urls.

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* @return array

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public function getUrlData($urls)

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{

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$return = [];

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/**

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* @var string $url

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* @var ProviderInterface $provider

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foreach ($this->providerCollection->findProviders($urls) as $url => $provider) {

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try {

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if ( $provider->shouldSendRequest() ) {

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$oembedClient = new OembedClient($this->config, $this->httpClient);

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$response = $oembedClient->getResponseFrom($provider);

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}else{

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$response = $provider->getStaticResponse();

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}

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if ($this->config['responsive'] && !$provider->hasResponsiveSupport()) {

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$responsive = new ResponsiveEmbeds();

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$response = $responsive->transform($response);

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}

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$return[$url] = $this->applyFilters($response);

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} catch (\Exception $e) {

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$this->errors[] = $e->getMessage();

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}

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}

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return array_filter($return);

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}

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/**

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* Adds a filter to the oembed response

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* @param callable $closure

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* @return void

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public function addFilter(callable $closure)

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{

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$this->filters[] = $closure;

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}

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/**

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* Applies registered filters/closures

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* to the oembed response.

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* @param array $response

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* @return array

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protected function applyFilters(array $response)

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{

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foreach ($this->filters as $closure) {

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$response = $closure($response);

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}

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return $response;

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}

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/**

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* Gets the last error found

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* @return string

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public function getLastError()

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{

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return end($this->errors);

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}

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/**

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* Returns an array with all the errors

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* @return array

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public function getErrors()

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{

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return $this->errors;

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}

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/**

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* Checks if there were errors

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* @return bool

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public function hasErrors()

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{

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return (!empty($this->errors));

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}

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}

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