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<?php

require_once 'Twilio/AccessToken.php';

class AccessTokenTest extends PHPUnit_Framework_TestCase
{
    const SIGNING_KEY_SID = 'SK123';

    const ACCOUNT_SID = 'AC123';

    protected function validateClaims($payload)
    {
        $this->assertEquals(self::SIGNING_KEY_SID, $payload->iss);
        $this->assertEquals(self::ACCOUNT_SID, $payload->sub);

        $this->assertNotNull($payload->exp);

        $this->assertGreaterThanOrEqual(time(), $payload->exp);

        $this->assertNotNull($payload->jti);
        $this->assertStringStartsWith($payload->iss . '-', $payload->jti);

        $this->assertNotNull($payload->grants);
    }

    function testEmptyGrants()
    {
        $scat = new Services_Twilio_AccessToken(self::ACCOUNT_SID, self::SIGNING_KEY_SID, 'secret');
        $token = $scat->toJWT();
        $this->assertNotNull($token);
        $payload = JWT::decode($token, 'secret');
        $this->validateClaims($payload);

        $this->assertEquals('{}', json_encode($payload->grants));
    }

    function testNbf()
    {
        $scat = new Services_Twilio_AccessToken(self::ACCOUNT_SID, self::SIGNING_KEY_SID, 'secret');

        $now = time();
        $scat->setNbf($now);

        $token = $scat->toJWT();
        $this->assertNotNull($token);
        $payload = JWT::decode($token, 'secret');
        $this->validateClaims($payload);
        $this->assertEquals('{}', json_encode($payload->grants));
        $this->assertEquals($now, $payload->nbf);
        $this->assertGreaterThan($payload->nbf, $payload->exp);
    }

    function testConversationGrant()
    {
        $scat = new Services_Twilio_AccessToken(self::ACCOUNT_SID, self::SIGNING_KEY_SID, 'secret');
        $grant = new Services_Twilio_Auth_ConversationsGrant();
        $grant->setConfigurationProfileSid("CP123");
        $scat->addGrant($grant);

        $token = $scat->toJWT();

        $this->assertNotNull($token);
        $payload = JWT::decode($token, 'secret');
        $this->validateClaims($payload);

        $grants = json_decode(json_encode($payload->grants), true);
        $this->assertEquals(1, count($grants));
        $this->assertArrayHasKey("rtc", $grants);
        $this->assertEquals("CP123", $grants['rtc']['configuration_profile_sid']);
    }

    function testIpMessagingGrant()
    {
        $scat = new Services_Twilio_AccessToken(self::ACCOUNT_SID, self::SIGNING_KEY_SID, 'secret');
        $grant = new Services_Twilio_Auth_IpMessagingGrant();
        $grant->setEndpointId("EP123");
        $grant->setServiceSid("IS123");
        $scat->addGrant($grant);

        $token = $scat->toJWT();
        $this->assertNotNull($token);
        $payload = JWT::decode($token, 'secret');
        $this->validateClaims($payload);

        $grants = json_decode(json_encode($payload->grants), true);
        $this->assertEquals(1, count($grants));
        $this->assertArrayHasKey("ip_messaging", $grants);
        $this->assertEquals("EP123", $grants['ip_messaging']['endpoint_id']);
        $this->assertEquals("IS123", $grants['ip_messaging']['service_sid']);
    }

    function testGrants()
    {
        $scat = new Services_Twilio_AccessToken(self::ACCOUNT_SID, self::SIGNING_KEY_SID, 'secret');
        $scat->setIdentity('test identity');
        $scat->addGrant(new Services_Twilio_Auth_ConversationsGrant());
        $scat->addGrant(new Services_Twilio_Auth_IpMessagingGrant());

        $token = $scat->toJWT();

        $this->assertNotNull($token);
        $payload = JWT::decode($token, 'secret');
        $this->validateClaims($payload);

        $grants = json_decode(json_encode($payload->grants), true);
        $this->assertEquals(3, count($grants));
        $this->assertEquals('test identity', $payload->grants->identity);
        $this->assertEquals('{}', json_encode($payload->grants->rtc));
        $this->assertEquals('{}', json_encode($payload->grants->ip_messaging));
    }

    function testProgrammableVoiceGrant() {
        $scat = new Services_Twilio_AccessToken(self::ACCOUNT_SID, self::SIGNING_KEY_SID, 'secret');
        $scat->setIdentity('test identity');

        $pvg = new Services_Twilio_Auth_VoiceGrant();
        $pvg->setOutgoingApplication('AP123', array('foo' => 'bar'));

        $scat->addGrant($pvg);

        $token = $scat->toJWT();

        $this->assertNotNull($token);
        $payload = JWT::decode($token, 'secret');
        $this->validateClaims($payload);

        $grants = json_decode(json_encode($payload->grants), true);
        $this->assertEquals(2, count($grants));
        $this->assertEquals('test identity', $payload->grants->identity);

        $decodedGrant = $grants['voice'];
        $outgoing = $decodedGrant['outgoing'];
        $this->assertEquals('AP123', $outgoing['application_sid']);

        $params = $outgoing['params'];
        $this->assertEquals('bar', $params['foo']);
    }

}