<?php

/*

* This file is part of jwt-auth.

*

* (c) Sean Tymon <tymon148@gmail.com>

*

* For the full copyright and license information, please view the LICENSE

* file that was distributed with this source code.

*/

namespace Tymon\JWTAuth;

use Tymon\JWTAuth\Claims\Claim;

use Tymon\JWTAuth\Claims\Collection;

use Tymon\JWTAuth\Support\RefreshFlow;

use Tymon\JWTAuth\Support\CustomClaims;

use Tymon\JWTAuth\Validators\PayloadValidator;

use Tymon\JWTAuth\Claims\Factory as ClaimFactory;

class Factory

{

use CustomClaims, RefreshFlow;

/**

* The claim factory.

*

* @var \Tymon\JWTAuth\Claims\Factory

*/

protected $claimFactory;

/**

* The validator.

*

* @var \Tymon\JWTAuth\Validators\PayloadValidator

*/

protected $validator;

/**

* The default claims.

*

* @var array

*/

protected $defaultClaims = [

'iss',

'iat',

'exp',

'nbf',

'jti',

];

/**

* The claims collection.

*

* @var \Tymon\JWTAuth\Claims\Collection

*/

protected $claims;

/**

* Constructor.

*

* @param \Tymon\JWTAuth\Claims\Factory $claimFactory

* @param \Tymon\JWTAuth\Validators\PayloadValidator $validator

*

* @return void

*/

public function __construct(ClaimFactory $claimFactory, PayloadValidator $validator)

{

$this->claimFactory = $claimFactory;

$this->validator = $validator;

$this->claims = new Collection;

}

/**

* Create the Payload instance.

*

* @param bool $resetClaims

*

* @return \Tymon\JWTAuth\Payload

*/

public function make($resetClaims = false)

{

$payload = $this->withClaims($this->buildClaimsCollection());

if ($resetClaims) {

$this->emptyClaims();

}

return $payload;

}

/**

* Empty the claims collection.

*

* @return $this

*/

public function emptyClaims()

{

$this->claims = new Collection;

return $this;

}

/**

* Add an array of claims to the Payload.

*

* @param array $claims

*

* @return $this

*/

protected function addClaims(array $claims)

{

foreach ($claims as $name => $value) {

$this->addClaim($name, $value);

}

return $this;

}

/**

* Add a claim to the Payload.

*

* @param string $name

* @param mixed $value

*

* @return $this

*/

protected function addClaim($name, $value)

{

$this->claims->put($name, $value);

return $this;

}

/**

* Build the default claims.

*

* @return $this

*/

protected function buildClaims()

{

// remove the exp claim if it exists and the ttl is null

if ($this->claimFactory->getTTL() === null && $key = array_search('exp', $this->defaultClaims)) {

unset($this->defaultClaims[$key]);

}

// add the default claims

foreach ($this->defaultClaims as $claim) {

$this->addClaim($claim, $this->claimFactory->make($claim));

}

// add custom claims on top, allowing them to overwrite defaults

return $this->addClaims($this->getCustomClaims());

}

/**

* Build out the Claim DTO's.

*

* @return \Tymon\JWTAuth\Claims\Collection

*/

protected function resolveClaims()

{

return $this->claims->map(function ($value, $name) {

return $value instanceof Claim ? $value : $this->claimFactory->get($name, $value);

});

}

/**

* Build and get the Claims Collection.

*

* @return \Tymon\JWTAuth\Claims\Collection

*/

public function buildClaimsCollection()

{

return $this->buildClaims()->resolveClaims();

}

/**

* Get a Payload instance with a claims collection.

*

* @param \Tymon\JWTAuth\Claims\Collection $claims

*

* @return \Tymon\JWTAuth\Payload

*/

public function withClaims(Collection $claims)

{

return new Payload($claims, $this->validator, $this->refreshFlow);

}

/**

* Set the default claims to be added to the Payload.

*

* @param array $claims

*

* @return $this

*/

public function setDefaultClaims(array $claims)

{

$this->defaultClaims = $claims;

return $this;

}

/**

* Helper to set the ttl.

*

* @param int $ttl

*

* @return $this

*/

public function setTTL($ttl)

{

$this->claimFactory->setTTL($ttl);

return $this;

}

/**

* Helper to get the ttl.

*

* @return int

*/

public function getTTL()

{

return $this->claimFactory->getTTL();

}

/**

* Get the default claims.

*

* @return array

*/

public function getDefaultClaims()

{

return $this->defaultClaims;

}

/**

* Get the PayloadValidator instance.

*

* @return \Tymon\JWTAuth\Validators\PayloadValidator

*/

public function validator()

{

return $this->validator;

}

/**

* Magically add a claim.

*

* @param string $method

* @param array $parameters

*

* @return $this

*/

public function __call($method, $parameters)

{

$this->addClaim($method, $parameters[0]);

return $this;

}

}