<?php

namespace ActivityPub\Test\Crypto;

use ActivityPub\Crypto\RsaKeypair;
use ActivityPub\Test\TestConfig\APTestCase;
use BadMethodCallException;

class RsaKeypairTest extends APTestCase
{
    public function testItCreatesKeypair()
    {
        $keypair = RsaKeypair::generate();
        $this->assertStringStartsWith( '-----BEGIN PUBLIC KEY-----', $keypair->getPublicKey() );
        $this->assertStringEndsWith( '-----END PUBLIC KEY-----', $keypair->getPublicKey() );
        $this->assertStringStartsWith(
            '-----BEGIN RSA PRIVATE KEY-----', $keypair->getPrivateKey()
        );
        $this->assertStringEndsWith(
            '-----END RSA PRIVATE KEY-----', $keypair->getPrivateKey()
        );
    }

    public function testItSignsAndValidatesSignatures()
    {
        $keypair = RsaKeypair::generate();
        $data = 'This is some data';
        $signature = $keypair->sign( $data );
        $this->assertInternalType( 'string', $signature );
        $this->assertNotEmpty( $signature );
        $verified = $keypair->verify( $data, $signature );
        $this->assertTrue( $verified );
    }

    public function testItGivesErrorValidatingInvalidSignature()
    {
        $keypair = RsaKeypair::generate();
        $data = 'This is some data';
        $signature = 'not a real signature';
        $this->setExpectedException( \PHPUnit_Framework_Error::class );
        $keypair->verify( $data, $signature );
    }

    public function testItReturnsNotVerifiedForValidButWrongSignature()
    {
        $keypairOne = RsaKeypair::generate();
        $data = 'This is some data';
        $signature = $keypairOne->sign( $data );
        $keypairTwo = RsaKeypair::generate();
        $verified = $keypairTwo->verify( $data, $signature );
        $this->assertFalse( $verified );
    }

    public function testItCreatesValidPublicKeyOnly()
    {
        $fullKeypair = RsaKeypair::generate();
        $publicKeyOnly = RsaKeypair::fromPublicKey( $fullKeypair->getPublicKey() );
        $data = 'This is some data';
        $signature = $fullKeypair->sign( $data );
        $verified = $publicKeyOnly->verify( $data, $signature );
        $this->assertTrue( $verified );
    }

    public function testItCannotSignWithPublicKeyOnly()
    {
        $fullKeypair = RsaKeypair::generate();
        $publicKeyOnly = RsaKeypair::fromPublicKey( $fullKeypair->getPublicKey() );
        $data = 'This is some data';
        $this->setExpectedException( BadMethodCallException::class, 'Unable to sign data without a private key' );
        $publicKeyOnly->sign( $data );
    }

    public function testItSignsAndVerifiesEmptyData()
    {
        $keypair = RsaKeypair::generate();
        $data = '';
        $signature = $keypair->sign( $data );
        $verified = $keypair->verify( $data, $signature );
        $this->assertTrue( $verified );
    }

    public function testItHandlesInvalidPublicKeyOnly()
    {
        $fullKeypair = RsaKeypair::generate();
        $publicKeyOnly = RsaKeypair::fromPublicKey( 'not a real public key' );
        $data = 'This is some data';
        $signature = $fullKeypair->sign( $data );
        $verified = $publicKeyOnly->verify( $data, $signature );
        $this->assertFalse( $verified );
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzcxOTQ4MDE2OTQ5NDk0IDk5ODMyMjU1MDUzMjAzNiA4NTQwNzE0NTQwODQ1NTc1