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<?php
namespace Office365\SharePoint;
use Exception;
use Office365\Runtime\Auth\AuthenticationContext;
use Office365\Runtime\Auth\ClientCredential;
use Office365\Runtime\Auth\IAuthenticationContext;
use Office365\Runtime\Auth\UserCredentials;
use Office365\Runtime\Actions\DeleteEntityQuery;
use Office365\Runtime\Http\HttpMethod;
use Office365\Runtime\OData\ODataRequest;
use Office365\Runtime\ResourcePath;
use Office365\Runtime\Actions\UpdateEntityQuery;
use Office365\Runtime\ClientRuntimeContext;
use Office365\Runtime\OData\JsonLightFormat;
use Office365\Runtime\OData\ODataMetadataLevel;
use Office365\Runtime\Http\RequestOptions;
/**
* Client context for SharePoint API service
*/
class ClientContext extends ClientRuntimeContext
{
/**
* @var Site
*/
private $site;
/**
* @var Web
*/
private $web;
/**
* @var ContextWebInformation
*/
private $contextWebInformation;
/**
* @var ODataRequest
*/
private $pendingRequest;
/**
* @var string
*/
private $baseUrl;
/**
* ClientContext constructor.
* @param string $url Site or Web url
* @param IAuthenticationContext $authCtx
*/
public function __construct($url, IAuthenticationContext $authCtx=null)
{
$this->baseUrl = $url;
$this->getPendingRequest()->beforeExecuteRequest(function (RequestOptions $request) {
$this->buildSharePointSpecificRequest($request);
});
parent::__construct($authCtx);
}
/**
* Initializes SharePoint context from absolute Url
* @param string $absUrl
* @return ClientContext
*/
public static function fromUrl($absUrl){
$urlInfo = parse_url($absUrl);
$rootSiteUrl = $urlInfo['scheme'] . '://' . $urlInfo['host'];
$ctx = new ClientContext($rootSiteUrl);
$result = Web::getWebUrlFromPageUrl($ctx, $absUrl);
$ctx->getPendingRequest()->afterExecuteRequest(function () use($ctx, $result){
$ctx->baseUrl = $result->getValue();
});
return $ctx;
}
/**
* @return ODataRequest
*/
public function getPendingRequest()
{
if (!isset($this->pendingRequest)) {
$this->pendingRequest = new ODataRequest($this,new JsonLightFormat(ODataMetadataLevel::Verbose));
}
return $this->pendingRequest;
}
/**
* Creates authenticated SharePoint context via user or client credentials
* @param ClientCredential|UserCredentials $credential
* @return ClientContext
*/
public function withCredentials($credential)
{
$this->authContext = new AuthenticationContext($this->baseUrl,function (AuthenticationContext $authCtx) use($credential) {
if ($credential instanceof UserCredentials)
$authCtx->acquireTokenForUser($credential->Username, $credential->Password);
elseif ($credential instanceof ClientCredential)
$authCtx->acquireAppOnlyAccessToken($credential->ClientId, $credential->ClientSecret);
else
throw new Exception("Unknown credentials");
});
return $this;
}
/**
* Status: deprecated, prefer nowadays WithCredentials method
* @param string $url
* @param string $username
* @param string $password
* @return ClientContext
* @throws Exception
*/
public static function connectWithUserCredentials($url,$username,$password)
{
$authContext = new AuthenticationContext($url);
$authContext->acquireTokenForUser($username, $password);
return new ClientContext($url,$authContext);
}
/**
* @param string $url
* @param string $clientId
* @param string $clientSecret
* @return ClientContext
* @throws Exception
*/
public static function connectWithClientCredentials($url, $clientId, $clientSecret)
{
$authCtx = new AuthenticationContext($url);
$authCtx->acquireAppOnlyAccessToken($clientId,$clientSecret);
return new ClientContext($url,$authCtx);
}
/**
* Ensure form digest value for POST request
* @param RequestOptions $request
*/
public function ensureFormDigest(RequestOptions $request)
{
if (!isset($this->contextWebInformation)) {
$this->requestFormDigest();
}
$request->ensureHeader("X-RequestDigest",$this->getContextWebInformation()->FormDigestValue);
}
/**
* Request the SharePoint Context Info
* @throws Exception
*/
public function requestFormDigest()
{
$request = new RequestOptions($this->getServiceRootUrl() . "contextinfo");
$request->Method = HttpMethod::Post;
$response = $this->executeQueryDirect($request);
if(!isset($this->contextWebInformation))
$this->contextWebInformation = new ContextWebInformation();
$format = new JsonLightFormat();
$format->FunctionTag = "GetContextWebInformation";
$payload = json_decode($response->getContent(), true);
$this->getPendingRequest()->mapJson($payload,$this->contextWebInformation, $format);
}
/**
* @param RequestOptions $request
*/
private function buildSharePointSpecificRequest(RequestOptions $request){
$query = $this->getCurrentQuery();
if($request->Method === HttpMethod::Post) {
$this->ensureFormDigest($request);
}
//set data modification headers
if ($query instanceof UpdateEntityQuery) {
$request->ensureHeader("IF-MATCH", "*");
$request->ensureHeader("X-HTTP-Method", "MERGE");
} else if ($query instanceof DeleteEntityQuery) {
$request->ensureHeader("IF-MATCH", "*");
$request->ensureHeader("X-HTTP-Method", "DELETE");
}
}
/**
* @return Web
*/
public function getWeb()
{
if(!isset($this->web)){
$this->web = new Web($this,new ResourcePath("Web"));
}
return $this->web;
}
/**
* @return Site
*/
public function getSite()
{
if(!isset($this->site)){
$this->site = new Site($this, new ResourcePath("Site"));
}
return $this->site;
}
/**
* @return ContextWebInformation
*/
public function getContextWebInformation()
{
return $this->contextWebInformation;
}
/**
* @return string
*/
public function getBaseUrl()
{
return $this->baseUrl;
}
/**
* @param string $value
*/
public function setBaseUrl($value)
{
$this->baseUrl = $value;
}
/**
* @return string
*/
public function getServiceRootUrl()
{
return "{$this->getBaseUrl()}/_api/";
}
/**
* @return RequestOptions
*/
public function buildRequest()
{
$request = parent::buildRequest();
$this->buildSharePointSpecificRequest($request);
return $request;
}
}