<?php
declare(strict_types=1);

namespace Phred\Tests;

use Phred\Support\Config;
use PHPUnit\Framework\TestCase;

final class ConfigTest extends TestCase
{
    protected function tearDown(): void
    {
        // Clean up env changes
        putenv('APP_ENV');
        unset($_ENV['APP_ENV'], $_SERVER['APP_ENV']);
        putenv('APP_DEBUG');
        unset($_ENV['APP_DEBUG'], $_SERVER['APP_DEBUG']);
        putenv('API_FORMAT');
        unset($_ENV['API_FORMAT'], $_SERVER['API_FORMAT']);
    }

    public function testEnvOverridesConfigFile(): void
    {
        // config/app.php sets 'env' => 'local' by default; ensure ENV wins
        putenv('APP_ENV=production');
        $this->assertSame('production', Config::get('APP_ENV'));
        $this->assertSame('production', Config::get('app.env'));
    }

    public function testReadsFromConfigFileWhenEnvMissing(): void
    {
        // From config/app.php
        $this->assertSame('UTC', Config::get('app.timezone'));
    }

    public function testReturnsDefaultWhenNotFound(): void
    {
        $this->assertSame('fallback', Config::get('nonexistent.key', 'fallback'));
    }
}