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<?php |
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namespace LunixREST\RequestFactory\URLParser\RegexURLParser; |
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use LunixREST\RequestFactory\URLParser\Exceptions\UnableToProvideMIMEException; |
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use LunixREST\RequestFactory\URLParser\MIMEProvider; |
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use LunixREST\RequestFactory\URLParser\ParsedURL; |
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use LunixREST\RequestFactory\URLParser\RegexURLParser\Exceptions\InvalidRegexPatternException; |
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use LunixREST\RequestFactory\URLParser\Exceptions\InvalidRequestURLException; |
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use LunixREST\RequestFactory\URLParser\URLParser; |
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use Psr\Http\Message\UriInterface; |
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/** |
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* An implementation of a URLParser that uses named regex capture groups to parse urls. |
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* Class RegexURLParser |
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* @package LunixREST\RequestFactory\URLParser\RegexURLParser |
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*/ |
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class RegexURLParser implements URLParser |
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{ |
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/** |
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* @var string |
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*/ |
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protected $pattern; |
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/** |
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* @var MIMEProvider|null |
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*/ |
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private $MIMEProvider; |
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/** |
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* RegexURLParser constructor. |
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* @param string $pattern - a pattern that matches named groups: endpoint. And optionally: element, version, apiKey, acceptableExtension |
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* @param MIMEProvider|null $MIMEProvider |
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* @throws InvalidRegexPatternException |
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*/ |
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public function __construct(string $pattern, ?MIMEProvider $MIMEProvider = null) |
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{ |
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$this->pattern = $pattern; |
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if(@preg_match($pattern, null) === false) { |
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throw new InvalidRegexPatternException("Unable to parse regex pattern", preg_last_error()); |
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} |
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$this->MIMEProvider = $MIMEProvider; |
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} |
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/** |
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* Parses API request data out of a url |
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* @param UriInterface $uri |
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* @return ParsedURL |
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* @throws InvalidRequestURLException |
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*/ |
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public function parse(UriInterface $uri): ParsedURL |
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{ |
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$matches = []; |
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if(preg_match($this->pattern, $uri->getPath(), $matches) === 0) { |
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throw new InvalidRequestURLException("Unable to parse request path: did not match regex"); |
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} |
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if(!($endpoint = $matches["endpoint"] ?? null)) { |
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throw new InvalidRequestURLException("Unable to match endpoint in url"); |
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} |
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$element = $matches["element"] ?? null; |
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$version = $matches["version"] ?? null; |
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$apiKey = $matches["apiKey"] ?? null; |
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$acceptableMimeTypes = []; |
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if(($acceptableExtension = $matches["acceptableExtension"] ?? null)) { |
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if(!$this->MIMEProvider) { |
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throw new InvalidRequestURLException("Unable to accept acceptable extensions"); |
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} else { |
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try { |
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$acceptableMimeTypes[] = $this->MIMEProvider->provideMIME($acceptableExtension); |
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} catch (UnableToProvideMIMEException $exception) { |
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throw new InvalidRequestURLException($exception->getMessage()); |
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} |
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} |
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} |
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return new ParsedURL($endpoint, $element, $version, $apiKey, $acceptableMimeTypes, $uri->getQuery()); |
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} |
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/** |
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* @return string |
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*/ |
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public function getPattern(): string |
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{ |
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return $this->pattern; |
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} |
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} |
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