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<?php declare(strict_types=1);
namespace uib\ub\loadspeakr\modules;
use uib\ub\loadspeakr\Configuration;
use uib\ub\loadspeakr\Convert;
use uib\ub\loadspeakr\Endpoint;
use uib\ub\loadspeakr\HTTPStatus;
use uib\ub\loadspeakr\Logging;
use uib\ub\loadspeakr\Utils;
final class ServiceModule implements ModuleInterface
private Configuration $configuration;
private Utils $utils;
private Endpoint $endpoints;
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private array $lodspk;
public function __construct(Configuration $configuration, Utils $utils)
{
$this->configuration = $configuration;
$this->utils = $utils;
$this->basedir = $configuration->getConfigValue('conf', 'basedir');
$this->endpoints = $configuration->getConfigValue('bootstrap', 'endpoints');
}
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/**
* Checking default components.
*
* @param $serviceName
* @param $arguments
* @param $extension
* @param $conf
* @param $lodspk
*/
private function checkComponents($serviceName, $arguments, $extension, $conf, $lodspk)
{
if (file_exists(
$conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/scaffold.ttl'
)) {
$subDir = $this->readScaffold(
$conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/scaffold.ttl',
join("/", $arguments)
);
$subDir .= '/';
$lodspk['model'] = $conf['home'] . $conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/' . $subDir;
$lodspk['view'] = $conf['view']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/' . $subDir . $extension . '.template';
} elseif (file_exists(
$conf['home'] . $conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName
)) {
$lodspk['model'] = $conf['home'] . $conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/';
$lodspk['view'] = $conf['home'] . $conf['view']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/' . $extension . '.template';
} else {
if (is_null($lodspk['model']) && is_null($lodspk['view'])) {
//checking other components
if (!empty($conf['components']['services']) && count($conf['components']['services']) > 0) {
foreach ($conf['components']['services'] as $service) {
$serviceArray = explode("/", $service);
if ($serviceName == end($serviceArray)) {
array_pop($serviceArray);
$conf['service']['prefix'] = array_pop($serviceArray);
$conf['model']['directory'] = join("/", $serviceArray);
$conf['view']['directory'] = $conf['model']['directory'];
if (file_exists(
$conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/scaffold.ttl'
)) {
$subDir = $this->readScaffold(
$conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/scaffold.ttl',
join("/", $arguments)
);
$subDir .= '/';
$lodspk['model'] = $conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/' . $subDir;
$lodspk['view'] = $conf['view']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/' . $subDir . $extension . '.template';
} elseif (file_exists(
$conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName
)) {
$lodspk['model'] = $conf['model']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/';
$lodspk['view'] = $conf['view']['directory'] . '/' . $conf['service']['prefix'] . '/' . $serviceName . '/' . $extension . '.template';
}
}
}
}
}
}
return ['conf' => $conf, 'lodspk' => $lodspk];
}
public function match($uri)
{
$conf = $this->configuration->getConfigValues('conf');
$acceptContentType = $this->configuration->getConfigValue('bootstrap', 'acceptContentType');
$localUri = $this->configuration->getConfigValue('bootstrap', 'localUri');
$lodspk = $this->configuration->getConfigValue('bootstrap', 'lodspk');
$q = preg_replace('|^' . $conf['basedir'] . '|', '', $localUri);
$qArr = explode('/', $q);
if (sizeof($qArr) == 0) {
return false;
}
$extension = Utils::getExtension($acceptContentType, $conf['http_accept']);
$viewFile = null;
$tokens = $qArr;
$arguments = array();
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while (sizeof($tokens) > 0) {
$serviceName = join("%2F", $tokens);
//Use .extension at the end of the service to force a particular content type
$lastSegment = end($tokens);
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if (strpos($lastSegment, '.') > 0) {
$aux = explode(".", $lastSegment);
if (sizeof($aux) > 1) {
$requestExtension = array_pop($aux);
$contentTypes = $conf['http_accept'][$requestExtension];
if ($contentTypes != null) {
$acceptContentType = $contentTypes[0];
$extension = $requestExtension;
}
}
$serviceName = join(".", $aux);
}
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$foundComponents = $this->checkComponents(
$serviceName,
$arguments,
$extension,
$conf,
$this->configuration->getConfigValue('bootstrap', 'lodspk')
);
$lodspk = $foundComponents["lodspk"];
$lodspk['serviceName'] = implode("/", $tokens);
$lodspk['componentName'] = $lodspk['serviceName'];
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$modelFile = $foundComponents['lodspk']['model'] . $extension . '.queries';
if (file_exists($lodspk['model'] . $extension . '.queries')) {
if (!file_exists($lodspk['view'])) {
$viewFile = null;
} else {
$viewFile = $lodspk['view'];
}
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$this->lodspk = $lodspk;
return array($modelFile, $viewFile);
}
if (file_exists($lodspk['model'] . 'queries')) {
$modelFile = $lodspk['model'] . 'queries';
if (!file_exists($lodspk['view'])) {
$lodspk['resultRdf'] = true;
$viewFile = null;
} else {
$viewFile = $lodspk['view'];
}
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$this->lodspk = $lodspk;
return array($modelFile, $viewFile);
}
if (file_exists($lodspk['model'])) {
HTTPStatus::send406($uri);
}
array_unshift($arguments, array_pop($tokens));
}
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$this->lodspk = $lodspk;
return false;
}
private function altUri(array $parameter, int $index)
{
$nsLocal = $this->configuration->getConfigValue('conf', 'ns')['local'];
$altUri = Utils::curie2uri($parameter[$index]);
return preg_replace("|^" . $this->basedir . "|", $nsLocal, $altUri);
}
public function execute($service)
{
$conf = $this->configuration->getConfigValues('conf');
$localUri = $this->configuration->getConfigValue('bootstrap', 'localUri');
$uri = $this->configuration->getConfigValue('bootstrap', 'uri');
$acceptContentType = $this->configuration->getConfigValue('bootstrap', 'acceptContentType');
$lodspk = $this->configuration->getConfigValue('bootstrap', 'lodspk');
$firstResults = $this->configuration->getConfigValue('bootstrap', 'firstResults');
$results = $this->configuration->getConfigValue('bootstrap', 'results');
$context = array();
$context['contentType'] = $acceptContentType;
$params = $this->getParams($localUri);
$extension = Utils::getExtension($acceptContentType, $conf['http_accept']);
$args = array();
[$modelFile, $viewFile] = $service;
try {
$prefixHeader = array();
for ($i = 0; $i < sizeof($params); $i++) {
if ($params[$i] && Utils::mirror_external_uris($conf)) {
$params[$i] = Utils::uri2curie($this->altUri($params, $i));
}
}
$segmentConnector = "";
for ($i = 0; $i < sizeof($params); $i++) {
if ($params[$i]) {
Utils::curie2uri($params[$i]);
$auxPrefix = Utils::getPrefix($params[$i], $conf['ns']);
if ($auxPrefix['ns'] != null) {
$prefixHeader[] = $auxPrefix;
}
$args["arg" . $i] = $params[$i];
$args["all"] .= $segmentConnector . $params[$i];
if ($segmentConnector == "") {
$segmentConnector = "/";
}
$results['params'] = $params;
$lodspk['home'] = $conf['basedir'];
$lodspk['baseUrl'] = $conf['basedir'];
$lodspk['module'] = 'service';
$lodspk['root'] = $conf['root'];
$lodspk['contentType'] = $acceptContentType;
$lodspk['ns'] = $conf['ns'];
$lodspk['this']['value'] = $uri;
$lodspk['this']['curie'] = Utils::uri2curie($uri);
$lodspk['local']['value'] = $localUri;
$lodspk['local']['curie'] = Utils::uri2curie($localUri);
$lodspk['contentType'] = $acceptContentType;
$lodspk['endpoint'] = $conf['endpoint'];
$lodspk['type'] = $modelFile;
$lodspk['header'] = $prefixHeader;
$lodspk['args'] = $args;
$lodspk['add_mirrored_uris'] = false;
$lodspk['baseUrl'] = $conf['basedir'];
$lodspk['this']['value'] = $uri;
if ($viewFile == null) {
$lodspk['transform_select_query'] = true;
}
Utils::queryFile($modelFile, $this->endpoints, $results, $firstResults);
if (!$lodspk['resultRdf']) {
$results = Utils::internalize($results);
$firstAux = Utils::getfirstResults($results);
if (is_array($results)) {
$resultsObj = Convert::array_to_object($results);
$results = $resultsObj;
} else {
$resultsObj = $results;
}
$lodspk['firstResults'] = Convert::array_to_object($firstAux);
} else {
$resultsObj = $results;
}
Utils::processDocument($viewFile, $lodspk, $results);
} catch (Exception $ex) {
echo $ex->getMessage();
if ($conf['debug']) {
Logging::log($ex->getMessage(), E_ERROR);
}
HTTPStatus::send500($uri);
}
}
protected function getParams($uri)
{
$count = 1;
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$functionAndParams = explode('/', str_replace($this->basedir . $this->lodspk['serviceName'], '', $uri, $count));
if (sizeof($functionAndParams) > 1) {
array_shift($functionAndParams);
return $functionAndParams;
}
protected function readScaffold($scaffold, $serviceArgs)
{
$parser = ARC2::getTurtleParser();
$parser->parse($scaffold);
$triples = $parser->getTriples();
$aux = Utils::filterTriples(
$triples,
array(null, "http://www.w3.org/1999/02/22-rdf-syntax-ns#type", "http://lodspeakr.org/vocab/ScaffoldedService")
);
$scaffoldUri = $aux[0][0];
$aux = Utils::filterTriples($triples, array($scaffoldUri, "http://lodspeakr.org/vocab/scaffold", null));
foreach ($aux as $r) {
$patterns = Utils::filterTriples($triples, array($r[2], "http://lodspeakr.org/vocab/uriPattern", null));
$pattern = stripcslashes($patterns[0][2]);
if (preg_match("|$pattern|", $serviceArgs) > 0) {
$patternDir = Utils::filterTriples(
$triples,
array($r[2], "http://lodspeakr.org/vocab/subComponent", null)
);
return $patternDir[0][2];
}
}
return "";
}
