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<?php
namespace Kreait\Firebase;
use function GuzzleHttp\Psr7\uri_for;
use Kreait\Firebase\Database\ApiClient;
use Kreait\Firebase\Database\Reference;
use Kreait\Firebase\Database\RuleSet;
use Kreait\Firebase\Exception\InvalidArgumentException;
use Kreait\Firebase\Exception\OutOfRangeException;
use Psr\Http\Message\UriInterface;
/**
* The Firebase Realtime Database.
*
* @see https://firebase.google.com/docs/reference/js/firebase.database.Database
*/
class Database
{
const SERVER_TIMESTAMP = ['.sv' => 'timestamp'];
/**
* @var ApiClient
*/
private $client;
/**
* @var UriInterface
*/
private $uri;
/**
* Creates a new database instance for the given database URI
* which is accessed by the given API client.
*
* @param UriInterface $uri
* @param ApiClient $client
*/
public function __construct(UriInterface $uri, ApiClient $client)
{
$this->uri = $uri;
$this->client = $client;
}
/**
* Returns a Reference to the root or the specified path.
*
* @see https://firebase.google.com/docs/reference/js/firebase.database.Database#ref
*
* @param string $path
*
* @throws InvalidArgumentException
*
* @return Reference
*/
public function getReference(string $path = null): Reference
{
try {
return new Reference($this->uri->withPath($path ?? ''), $this->client);
} catch (\InvalidArgumentException $e) {
throw new InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Returns a reference to the root or the path specified in url.
*
* @see https://firebase.google.com/docs/reference/js/firebase.database.Database#refFromURL
*
* @param string|UriInterface $uri
*
* @throws InvalidArgumentException If the URL is invalid
* @throws OutOfRangeException If the URL is not in the same domain as the current database
*
* @return Reference
*/
public function getReferenceFromUrl($uri): Reference
{
try {
$uri = uri_for($uri);
} catch (\InvalidArgumentException $e) {
// Wrap exception so that everything stays inside the Firebase namespace
throw new InvalidArgumentException($e->getMessage(), $e->getCode());
}
if (($givenHost = $uri->getHost()) !== ($dbHost = $this->uri->getHost())) {
throw new InvalidArgumentException(sprintf(
'The given URI\'s host "%s" is not covered by the database for the host "%s".',
$givenHost, $dbHost
));
}
return $this->getReference($uri->getPath());
}
/**
* Retrieve Firebase Database Rules.
*
* @see https://firebase.google.com/docs/database/rest/app-management#retrieving-firebase-realtime-database-rules
*
* @return RuleSet
*/
public function getRules(): RuleSet
{
$rules = $this->client->get($this->uri->withPath('.settings/rules'));
return RuleSet::fromArray($rules);
}
/**
* Update Firebase Database Rules.
*
* @see https://firebase.google.com/docs/database/rest/app-management#updating-firebase-realtime-database-rules
*
* @param RuleSet $ruleSet
*/
public function updateRules(RuleSet $ruleSet)
{
$this->client->updateRules($this->uri->withPath('.settings/rules'), $ruleSet);
}
}
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