Merge pull request #5 from generationtux/json-serialize

serialize tokens for json_encode

.gitignore

@@ -1 +1,2 @@
+/.idea
 /vendor

spec/JwtTokenSpec.php

@@ -2,12 +2,14 @@
 
 namespace spec\GenTux\Jwt;
 
-use GenTux\Jwt\JwtPayloadInterface;
 use Prophecy\Argument;
 use GenTux\Jwt\JwtToken;
 use PhpSpec\ObjectBehavior;
+use GenTux\Jwt\JwtPayloadInterface;
+use GenTux\Jwt\Drivers\FirebaseDriver;
 use GenTux\Jwt\Drivers\JwtDriverInterface;
 use GenTux\Jwt\Exceptions\NoTokenException;
+use PhpSpec\Exception\Example\FailureException;
 use GenTux\Jwt\Exceptions\InvalidTokenException;
 
 class JwtTokenSpec extends ObjectBehavior
@@ -107,4 +109,18 @@ public function it_gets_the_payload_data_from_the_provided_dot_path(JwtDriverInt
         $this->payload('context')->shouldReturn(['some' => 'data']);
         $this->payload('context.some')->shouldReturn('data');
     }
+
+    public function it_encodes_to_json_as_a_string_representation_of_the_token(JwtDriverInterface $jwt)
+    {
+        $driver = new FirebaseDriver();
+        $jwt = new JwtToken($driver);
+        $token = $jwt->createToken(['exp' => time() + 100], 'secret');
+
+        $serialized = json_encode(['token' => $token]);
+        $decoded = json_decode($serialized);
+
+        if( ! is_string($decoded->token) || strlen($decoded->token) < 1) {
+            throw new FailureException('Token was not json encoded.');
+        }
+    }
 }

src/JwtToken.php

@@ -2,13 +2,14 @@
 
 namespace GenTux\Jwt;
 
+use JsonSerializable;
 use Illuminate\Support\Arr;
 use GenTux\Jwt\Drivers\JwtDriverInterface;
 use GenTux\Jwt\Exceptions\NoTokenException;
 use GenTux\Jwt\Exceptions\NoSecretException;
 use GenTux\Jwt\Exceptions\InvalidTokenException;
 
-class JwtToken
+class JwtToken implements JsonSerializable
 {
 
     /** @var JwtDriverInterface */
@@ -236,6 +237,20 @@ public function createToken($payload, $secret = null, $algo = null)
         return $token;
     }
 
+    /**
+     * Specify data which should be serialized to JSON
+     * @link http://php.net/manual/en/jsonserializable.jsonserialize.php
+     *
+     * @return mixed data which can be serialized by <b>json_encode</b>,
+     * which is a value of any type other than a resource.
+     * @since 5.4.0
+     */
+    public function jsonSerialize()
+    {
+        return $this->token();
+    }
+
+
     /**
      * Convert into string
      *