url = $url;
$this->parameters = (new Collection())->add($parameters);
}
public function getUrl(): string
{
return $this->url;
}
public function getParameters(): CollectionInterface
{
return $this->parameters;
}
/**
* @throws LtiExceptionInterface
*/
public static function fromServerRequest(ServerRequestInterface $request): LtiMessageInterface
{
$method = strtoupper($request->getMethod());
if ($method === 'GET') {
parse_str($request->getUri()->getQuery(), $parameters);
return new static($request->getUri()->__toString(), $parameters);
}
if ($method === 'POST') {
return new static($request->getUri()->__toString(), $request->getParsedBody());
}
throw new LtiException(sprintf('Unsupported request method %s', $method));
}
public function toUrl(): string
{
$separator = false !== strpos($this->url, '?')
? '&'
: '?';
return sprintf('%s%s%s', $this->url, $separator, http_build_query(array_filter($this->getParameters()->all())));
}
public function toHtmlLink(string $title, array $attributes = []): string
{
$htmlAttributes = [];
foreach ($attributes as $name => $value) {
$htmlAttributes[] = sprintf('%s="%s"', $name, $value);
}
return sprintf('%s', $this->toUrl(), implode(' ', $htmlAttributes), $title);
}
public function toHtmlRedirectForm(bool $autoSubmit = true): string
{
$formInputs = [];
$parameters = array_filter($this->getParameters()->all());
$formId = sprintf('launch_%s', md5($this->url . implode('-', $parameters)));
foreach ($parameters as $name => $value) {
$formInputs[] = sprintf('', $name, $value);
}
$autoSubmitScript = sprintf(
'',
$formId
);
return sprintf(
'%s',
$formId,
$this->url,
implode('', $formInputs),
$autoSubmit ? $autoSubmitScript : ''
);
}
}