<?php

declare(strict_types=1);

namespace Tests\Kernel;

use Netig\Netslim\Kernel\Runtime\Startup\InfrastructureBootstrapper;
use PHPUnit\Framework\TestCase;
use Psr\Container\ContainerInterface;

final class InfrastructureBootstrapperTest extends TestCase
{
    private string $workspace;

    /** @var array<string, string|null> */
    private array $envBackup = [];

    /** @var array<string, string|false> */
    private array $putenvBackup = [];

    protected function setUp(): void
    {
        $this->workspace = sys_get_temp_dir() . '/netslim-bootstrapper-' . bin2hex(random_bytes(8));
        mkdir($this->workspace, 0777, true);

        foreach (['APP_ENV', 'APP_URL', 'TIMEZONE'] as $key) {
            $this->envBackup[$key] = $_ENV[$key] ?? null;
            $this->putenvBackup[$key] = getenv($key);
            unset($_ENV[$key], $_SERVER[$key]);
            putenv($key);
        }
    }

    protected function tearDown(): void
    {
        foreach ($this->envBackup as $key => $value) {
            if ($value === null) {
                unset($_ENV[$key], $_SERVER[$key]);
            } else {
                $_ENV[$key] = $value;
                $_SERVER[$key] = $value;
            }

            $previous = $this->putenvBackup[$key] ?? false;
            if ($previous === false) {
                putenv($key);
            } else {
                putenv($key . '=' . $previous);
            }
        }

        $this->removeDirectory($this->workspace);
        parent::tearDown();
    }

    public function testBootstrapCreatesRuntimeDirectoriesLoadsEnvironmentAndMemoizesContainer(): void
    {
        $this->writeEnvFile([
            'APP_ENV=development',
            'APP_URL=http://localhost',
            'ADMIN_USERNAME=admin',
            'ADMIN_EMAIL=admin@example.test',
            'ADMIN_PASSWORD=secret123456',
            'TIMEZONE=Europe/Paris',
        ]);
        $definitionsPath = $this->writeDefinitionsFile();
        $bootstrapper = new InfrastructureBootstrapper($this->workspace, $definitionsPath);

        $container = $bootstrapper->bootstrap();
        $sameContainer = $bootstrapper->bootstrap();

        self::assertInstanceOf(ContainerInterface::class, $container);
        self::assertSame($container, $sameContainer);
        self::assertSame('from-test-definitions', $container->get('bootstrap.flag'));
        self::assertSame('Europe/Paris', date_default_timezone_get());

        foreach ([
            'var/cache/twig',
            'var/cache/htmlpurifier',
            'var/cache/di',
            'var/logs',
            'database',
            'public/media',
        ] as $directory) {
            self::assertDirectoryExists($this->workspace . '/' . $directory);
        }
    }

    public function testBootstrapFailsWhenEnvironmentFileIsMissing(): void
    {
        $bootstrapper = new InfrastructureBootstrapper($this->workspace, $this->writeDefinitionsFile());

        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage('Fichier .env introuvable');

        $bootstrapper->bootstrap();
    }

    public function testBootstrapNoLongerRequiresIdentityProvisioningVariables(): void
    {
        $this->writeEnvFile([
            'APP_ENV=production',
            'APP_URL=https://example.test',
        ]);
        $bootstrapper = new InfrastructureBootstrapper($this->workspace, $this->writeDefinitionsFile());

        $container = $bootstrapper->bootstrap();

        self::assertInstanceOf(ContainerInterface::class, $container);
    }

    private function writeEnvFile(array $lines): void
    {
        file_put_contents($this->workspace . '/.env', implode(PHP_EOL, $lines) . PHP_EOL);
    }

    private function writeDefinitionsFile(): string
    {
        $definitionsPath = $this->workspace . '/definitions.php';
        file_put_contents($definitionsPath, <<<'PHP'
<?php

declare(strict_types=1);

return [
    'bootstrap.flag' => 'from-test-definitions',
];
PHP);

        return $definitionsPath;
    }

    private function removeDirectory(string $directory): void
    {
        if (!is_dir($directory)) {
            return;
        }

        $iterator = new \RecursiveIteratorIterator(
            new \RecursiveDirectoryIterator($directory, \FilesystemIterator::SKIP_DOTS),
            \RecursiveIteratorIterator::CHILD_FIRST,
        );

        foreach ($iterator as $fileInfo) {
            if ($fileInfo->isDir()) {
                rmdir($fileInfo->getPathname());
                continue;
            }

            unlink($fileInfo->getPathname());
        }

        rmdir($directory);
    }
}