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<?php |
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namespace Cohensive\OEmbed; |
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use Cohensive\OEmbed\Exceptions\ExtractorException; |
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class OEmbedExtractor extends Extractor |
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{ |
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public function __construct(string $provider, string $url, array $parameters = []) |
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{ |
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$this->provider = $provider; |
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$this->url = $url; |
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$this->parameters = $parameters; |
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} |
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/** |
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* Fetches OEmbed data from provider. |
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*/ |
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public function fetch(array $parameters = []): ?Embed |
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{ |
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$requestUrl = $this->buildRequestUrl($parameters); |
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$response = file_get_contents($requestUrl); |
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if (!$response) { |
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return null; |
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} |
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$oembedData = json_decode($response, true); |
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if (!$oembedData) { |
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throw new ExtractorException('Invalid JSON response from OEmbed provider. Url: ' . $this->url); |
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} |
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return new Embed(Embed::TYPE_OEMBED, $this->url, $oembedData); |
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} |
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/** |
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* Builds the complete request URL with all parameters. |
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*/ |
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private function buildRequestUrl(array $parameters = []): string |
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{ |
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$baseUrl = explode('?', $this->provider)[0]; |
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$existingParams = $this->extractExistingParams(); |
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$finalParams = $this->mergeAllParameters($existingParams, $parameters); |
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return $baseUrl . '?' . http_build_query($finalParams); |
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} |
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/** |
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* Extracts existing query parameters from the provider URL. |
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*/ |
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private function extractExistingParams(): array |
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{ |
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$queryString = parse_url($this->provider, PHP_URL_QUERY); |
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$existingParams = []; |
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if ($queryString) { |
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parse_str($queryString, $existingParams); |
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} |
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return $existingParams; |
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} |
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/** |
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* Merges all parameters in the correct priority order. |
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*/ |
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private function mergeAllParameters(array $existingParams, array $parameters): array |
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{ |
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$requestParams = $parameters ?: $this->parameters; |
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$mandatoryParams = ['url' => $this->url]; |
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return array_merge($existingParams, $requestParams, $mandatoryParams); |
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} |
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} |
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KaneCohen /
oembed
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