52 lines
1.5 KiB
PHP
52 lines
1.5 KiB
PHP
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<?php
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namespace App\MetadataResolver;
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class OGPResolver implements Resolver
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{
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public function resolve(string $url): Metadata
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{
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$client = new \GuzzleHttp\Client();
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$res = $client->get($url);
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if ($res->getStatusCode() === 200) {
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return $this->parse($res->getBody());
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} else {
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throw new \RuntimeException("{$res->getStatusCode()}: $url");
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}
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}
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public function parse(string $html): Metadata
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{
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$dom = new \DOMDocument();
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@$dom->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
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$xpath = new \DOMXPath($dom);
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$metadata = new Metadata();
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$titleNode = $xpath->query('//meta[@*="og:title"]');
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foreach ($titleNode as $node) {
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if (!empty($node->getAttribute('content'))) {
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$metadata->title = $node->getAttribute('content');
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break;
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}
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}
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$descriptionNode = $xpath->query('//meta[@*="og:description"]');
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foreach ($descriptionNode as $node) {
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if (!empty($node->getAttribute('content'))) {
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$metadata->description = $node->getAttribute('content');
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break;
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}
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}
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$imageNode = $xpath->query('//meta[@*="og:image"]');
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foreach ($imageNode as $node) {
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if (!empty($node->getAttribute('content'))) {
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$metadata->image = $node->getAttribute('content');
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break;
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}
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}
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return $metadata;
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}
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}
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