<?php declare(strict_types=1);

namespace Orbit\Tests;

use PHPUnit\Framework\TestCase;

use Orbit\Cert;
use Orbit\Config;
use Monolog\Logger;

final class CertTest extends TestCase
{
    public function makeTestLogger(): Logger
    {
        $logger = new Logger('test-orbit');
        $logger->pushHandler(new \Monolog\Handler\TestHandler());

        return $logger;
    }

    public function getTestLogRecords($logger): array
    {
        return $logger->getHandlers()[0]->getRecords();
    }

    public function getTestLogMessages($logger): array
    {
        $messages = [];
        foreach ($this->getTestLogRecords($logger) as $message) {
            $messages[] = $message['level_name'] . ": " . $message['message'];
        }

        return $messages;
    }

    public function testConstructDev(): void
    {
        $config = new Config(true);
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);

        $messages = $this->getTestLogMessages($logger);
        $this->assertEquals(3, count($messages));
        $this->assertStringContainsString('development mode', $messages[0]);
        $this->assertStringContainsString('Generating new cert file', $messages[1]);
        $this->assertStringContainsString('Generating new key file', $messages[2]);
    }

    public function testConstructDevExistingCertFile(): void
    {
        $config = new Config(true);
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('development mode', $messages[0]);
        $this->assertStringContainsString('Generating new cert file', $messages[1]);
        $this->assertStringContainsString('Generating new key file', $messages[2]);

        $logger = $this->makeTestLogger();
        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('Using existing cert file', $messages[1]);
        $this->assertStringContainsString('Using existing key file', $messages[2]);
    }

    public function testConstructDevOverwriteCertWarning(): void
    {
        $config = new Config(true);
        $logger = $this->makeTestLogger();

        @mkdir('certs');
        file_put_contents('certs/localhost.cert.pem', '####');
        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('May overwrite existing cert file', $messages[3]);
    }

    public function testConstructDevSetCertFile(): void
    {
        $config = new Config(true);
        $config->tls_certfile = 'certs/subd/wahoo.cert.pem';
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('certs/subd/wahoo.cert.pem', $messages[1]);
        @unlink("certs/subd/wahoo.cert.pem");
    }

    public function testConstructDevSetKeyFile(): void
    {
        $config = new Config(true);
        $config->tls_keyfile = 'certs/wahoo.key.pem';
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('certs/wahoo.key.pem', $messages[2]);
        @unlink("certs/wahoo.key.pem");
    }

    public function testConstructDevFilesUsingHostname(): void
    {
        $config = new Config(true);
        $config->hostname = 'particle';
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('certs/particle.cert.pem', $messages[1]);
        $this->assertStringContainsString('certs/particle.key.pem', $messages[2]);
        @unlink("certs/particle.cert.pem");
        @unlink("certs/particle.key.pem");
    }

    public function testConstructDevOverwriteKeyWarning(): void
    {
        $config = new Config(true);
        $logger = $this->makeTestLogger();

        @mkdir('certs');
        file_put_contents('certs/localhost.key.pem', '####');
        $cert = new Cert($config, $logger);
        $this->assertInstanceOf(Cert::class, $cert);
        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('May overwrite existing key file', $messages[3]);
    }

    public function testConstructProd(): void
    {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessage("Missing required cert file");

        $config = new Config();
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
    }

    public function testConstructProdDefinedButMissingFiles(): void
    {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessage("does not exist or is not readable");

        $config = new Config();
        $config->tls_certfile = 'localhost.cert.pem';
        $config->tls_keyfile = 'localhost.key.pem';
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);
    }

    public function testConstructProdDefinedFiles(): void
    {
        // first run in development mode to auto-generate certs
        $config = new Config(true);
        $logger = $this->makeTestLogger();
        $cert = new Cert($config, $logger);

        // now run in prod mode to use those cert files
        $config = new Config();
        $config->tls_certfile = 'certs/localhost.cert.pem';
        $config->tls_keyfile = 'certs/localhost.key.pem';
        $logger = $this->makeTestLogger();

        $cert = new Cert($config, $logger);

        $messages = $this->getTestLogMessages($logger);
        $this->assertStringContainsString('Using cert file', $messages[1]);
        $this->assertStringContainsString('Using key file', $messages[2]);
    }

    public function tearDown(): void
    {
        @unlink("certs/localhost.cert.pem");
        @unlink("certs/localhost.key.pem");
        @rmdir("certs/subd");
    }
}