<?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:----MzcxNTYwNjQyNDI2OTUwOCA2MTAwMDMwNTIxMzE1MDYwIDMwNjU2MDc0MzI4ODMyNzQ=