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<?php |
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namespace alkemann\h2l\response; |
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use alkemann\h2l\Message; |
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use alkemann\h2l\Response; |
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use alkemann\h2l\Environment; |
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use alkemann\h2l\util\Http; |
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/** |
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* Class Json |
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* |
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* @package alkemann\h2l |
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*/ |
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class Json extends Response |
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{ |
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/** |
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* @param mixed $content JSON encodable payload |
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* @param int $code HTTP code to respond with, defaults to `200` |
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* @param array<string, mixed> $config inject config/overrides like `header_func` |
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*/ |
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public function __construct($content = null, int $code = Http::CODE_OK, array $config = []) |
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{ |
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$this->config = $config + [ |
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'encode_options' => Environment::get('json_encode_options', JSON_THROW_ON_ERROR), |
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'encode_depth' => Environment::get('json_encode_depth', 512), |
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'container' => Environment::get('json_encode_container', true), |
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]; |
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$this->message = (new Message()) |
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->withCode($code) |
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->withHeaders(['Content-Type' => Http::CONTENT_JSON]) |
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->withBody($this->encodeAndContainData($content)) |
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; |
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} |
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/** |
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* Set header and return a string rendered and ready to be echo'ed as response |
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* |
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* Header 'Content-type:' will be set using `header` or an injeced 'header_func' through constructor |
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* |
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* @return string |
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*/ |
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public function render(): string |
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{ |
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$this->setHeaders(); |
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return $this->message->body(); |
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} |
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/** |
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* @param mixed $content something that can be Json Enccoded |
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* @return string |
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* @throws \JsonException on encode errors |
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*/ |
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private function encodeAndContainData($content): string |
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{ |
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if (empty($content)) { |
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return ""; |
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} |
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if ($content instanceof \Generator) { |
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$content = iterator_to_array($content); |
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} |
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$container = $this->config['container'] ? ['data' => $content] : $content; |
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$json = json_encode( |
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$container, |
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$this->config['encode_options'], |
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$this->config['encode_depth'] |
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); |
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return is_string($json) ? $json : ''; |
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} |
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} |
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