<?php

namespace App\Tests\Functional;

use Doctrine\DBAL\Connection;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

final class HealthApiTest extends WebTestCase
{
    public function testItReportsHealthyWithoutAuthentication(): void
    {
        $client = static::createClient();

        $client->request('GET', '/api/health');

        $response = $client->getResponse();

        self::assertSame(
            200,
            $response->getStatusCode(),
            'GET /api/health must return 200 and require no authentication.',
        );

        $body = json_decode((string) $response->getContent(), true);

        self::assertIsArray($body);
        self::assertSame('ok', $body['status'] ?? null);
        self::assertSame('ok', $body['db'] ?? null);
    }

    public function testItReportsUnhealthyWhenTheDatabaseIsUnreachable(): void
    {
        $client = static::createClient();

        // Swap the DBAL connection for a stub that fails the ping, simulating an
        // unreachable database without touching the real one. Overriding the
        // bare Connection::class id is what the controller actually receives:
        // autowiring keys by FQCN, so the `Connection $connection` parameter
        // resolves to this same service.
        $connection = $this->createStub(Connection::class);
        $connection->method('executeQuery')
            ->willThrowException(new \RuntimeException('connection refused'));
        static::getContainer()->set(Connection::class, $connection);

        $client->request('GET', '/api/health');

        $response = $client->getResponse();

        self::assertSame(503, $response->getStatusCode());

        $body = json_decode((string) $response->getContent(), true);

        self::assertIsArray($body);
        self::assertSame('error', $body['status'] ?? null);
        self::assertSame('unreachable', $body['db'] ?? null);
    }
}