<?php

declare(strict_types=1);

namespace App\Tests\Module\Core\Api;

use DateTimeImmutable;
use DateTimeZone;
use Doctrine\DBAL\Connection;
use Symfony\Component\Uid\Uuid;

/**
 * Tests fonctionnels de l'API `/api/audit-logs`.
 *
 * Invariants testes :
 *  - 401 sans authentification ;
 *  - 403 pour un user authentifie sans permission `core.audit_log.view` ;
 *  - 200 + JSON-LD pagine pour admin et user avec la permission ;
 *  - filtres `entity_type`, `action` operants ;
 *  - ordre `performed_at DESC` ;
 *  - aucune operation d'ecriture exposee (POST -> 405).
 *
 * Seed : on insere 3 lignes temoins directement via DBAL (pas via l'ORM)
 * pour eviter la recursion du listener. Les lignes sont supprimees en
 * tearDown par le request_id tag specifique au run.
 *
 * @internal
 */
final class AuditLogApiTest extends AbstractApiTestCase
{
    // Proprietes nullable : si `bootKernel()` ou l'acces container echoue,
    // `tearDown` se declenche quand meme et doit survivre a un setUp incomplet
    // (sinon on masque l'exception d'origine avec un "typed property must not
    // be accessed before initialization").
    private ?Connection $auditConnection = null;

    private ?string $runTag = null;

    protected function setUp(): void
    {
        parent::setUp();
        self::bootKernel();

        /** @var Connection $conn */
        $conn                  = self::getContainer()->get('doctrine.dbal.audit_connection');
        $this->auditConnection = $conn;

        $this->runTag = 'apiaudit'.bin2hex(random_bytes(4));
        $this->seedAuditLog();
    }

    protected function tearDown(): void
    {
        if (null !== $this->auditConnection && null !== $this->runTag) {
            $this->auditConnection->executeStatement(
                'DELETE FROM audit_log WHERE request_id = :tag',
                ['tag' => $this->runTag],
            );
            // Close explicite pour liberer la connexion PG : en test, le
            // kernel reboote et les connexions pendantes saturent le pool
            // sur une suite de 200+ tests qui ouvrent 2 connexions chacun.
            $this->auditConnection->close();
        }
        parent::tearDown();
    }

    public function testUnauthenticatedRequestGets401(): void
    {
        $client   = self::createClient();
        $response = $client->request('GET', '/api/audit-logs');

        self::assertSame(401, $response->getStatusCode());
    }

    public function testAuthenticatedUserWithoutPermissionGets403(): void
    {
        // Utilise `core.users.view` comme permission non-liee (l'user n'a pas audit_log.view).
        $credentials = $this->createUserWithPermission('core.users.view');
        $client      = $this->authenticatedClient($credentials['username'], $credentials['password']);
        $response    = $client->request('GET', '/api/audit-logs');

        self::assertSame(403, $response->getStatusCode());
    }

    public function testAuthenticatedUserWithPermissionGets200(): void
    {
        $credentials = $this->createUserWithPermission('core.audit_log.view');
        $client      = $this->authenticatedClient($credentials['username'], $credentials['password']);
        $response    = $client->request('GET', '/api/audit-logs');

        self::assertSame(200, $response->getStatusCode());

        $data = $response->toArray();
        self::assertArrayHasKey('member', $data);
        self::assertArrayHasKey('totalItems', $data);
    }

    /**
     * Le frontend force `Accept: application/ld+json` dans `useAuditLog` pour
     * recuperer les cles prefixees `hydra:*` (et `hydra:view` pour la
     * pagination). Ce test verrouille ce contrat : sans lui, un changement
     * de configuration API Platform cassant le JSON-LD passerait inaperçu
     * et le tableau admin apparaitrait silencieusement vide en production.
     */
    /**
     * Le frontend demande explicitement `application/ld+json` dans `useAuditLog`
     * pour obtenir l'objet Hydra complet (`member`, `totalItems`, `view`). Sous
     * `application/json`, API Platform 4 renvoie un tableau plat sans ces
     * metadonnees, ce qui casserait la pagination prev/next. Ce test verrouille
     * le contrat : un changement de format par defaut ou une desactivation de
     * JSON-LD produirait un 200 trompeur mais un tableau admin vide.
     */
    public function testJsonLdFormatExposesHydraEnvelope(): void
    {
        $client   = $this->authenticatedClient('admin', 'admin');
        $response = $client->request('GET', '/api/audit-logs', [
            'headers' => ['Accept' => 'application/ld+json'],
        ]);

        self::assertSame(200, $response->getStatusCode());
        self::assertStringContainsString('application/ld+json', $response->getHeaders()['content-type'][0]);

        $data = $response->toArray();
        self::assertArrayHasKey('member', $data);
        self::assertArrayHasKey('totalItems', $data);
        // `view` n'est presente que si une pagination est active (plus d'items
        // que la limite par page). Avec paginationItemsPerPage=30 et les 3
        // lignes seedees (+ d'autres lignes de tests precedents), la collection
        // peut excelder 30. Si presente, elle doit porter au moins @id.
        if (isset($data['view'])) {
            self::assertArrayHasKey('@id', $data['view']);
        }
    }

    public function testAdminGets200(): void
    {
        $client   = $this->authenticatedClient('admin', 'admin');
        $response = $client->request('GET', '/api/audit-logs');

        self::assertSame(200, $response->getStatusCode());
    }

    public function testFilterByEntityType(): void
    {
        $client   = $this->authenticatedClient('admin', 'admin');
        $response = $client->request('GET', '/api/audit-logs?entity_type=core.User&action=update');

        self::assertSame(200, $response->getStatusCode());
        $data    = $response->toArray();
        $members = $data['member'];

        // On verifie qu'il n'y a que des lignes matching nos filtres dans les resultats de notre run
        // (d'autres lignes antérieures au run peuvent exister, mais le filtre doit etre respecte).
        foreach ($members as $member) {
            self::assertSame('core.User', $member['entityType']);
            self::assertSame('update', $member['action']);
        }
    }

    public function testOrderedByPerformedAtDesc(): void
    {
        $client = $this->authenticatedClient('admin', 'admin');
        // On cible les 3 lignes seedees via le filtre `entity_id=999` (unique a ce test).
        $response = $client->request('GET', '/api/audit-logs?'.http_build_query(['entity_type' => 'core.User', 'entity_id' => '999']));

        self::assertSame(200, $response->getStatusCode());

        $data    = $response->toArray();
        $members = array_values(array_filter(
            $data['member'],
            fn (array $m) => ($m['requestId'] ?? null) === $this->runTag,
        ));

        self::assertCount(3, $members, 'Les 3 lignes seedees doivent etre visibles');
        // Tri DESC : le plus recent d'abord.
        $timestamps = array_map(fn (array $m) => strtotime((string) $m['performedAt']), $members);
        $sortedDesc = $timestamps;
        rsort($sortedDesc);
        self::assertSame($sortedDesc, $timestamps, 'Les lignes doivent etre triees par performedAt DESC');
    }

    public function testItemEndpointReturns200WithPermission(): void
    {
        $row = $this->auditConnection->fetchAssociative(
            'SELECT id FROM audit_log WHERE request_id = :tag LIMIT 1',
            ['tag' => $this->runTag],
        );
        self::assertIsArray($row);

        $client   = $this->authenticatedClient('admin', 'admin');
        $response = $client->request('GET', '/api/audit-logs/'.$row['id']);

        self::assertSame(200, $response->getStatusCode());
        $data = $response->toArray();
        self::assertSame($row['id'], $data['id']);
    }

    public function testPostIsNotAllowed(): void
    {
        $client   = $this->authenticatedClient('admin', 'admin');
        $response = $client->request('POST', '/api/audit-logs', [
            'headers' => ['Content-Type' => 'application/ld+json'],
            'json'    => ['entityType' => 'core.User', 'entityId' => '1', 'action' => 'create', 'changes' => []],
        ]);

        self::assertContains($response->getStatusCode(), [404, 405], 'POST doit etre refuse (pas d\'operation d\'ecriture exposee)');
    }

    /**
     * Insere 3 lignes temoins taggees avec le runTag pour un nettoyage sur.
     */
    private function seedAuditLog(): void
    {
        $now = new DateTimeImmutable('now', new DateTimeZone('UTC'));

        $fixtures = [
            [
                'entity_type'  => 'core.User',
                'entity_id'    => '999',
                'action'       => 'update',
                'changes'      => ['isAdmin' => ['old' => false, 'new' => true]],
                'performed_by' => 'admin',
                'performed_at' => $now->modify('-2 hours'),
            ],
            [
                'entity_type'  => 'core.User',
                'entity_id'    => '999',
                'action'       => 'update',
                'changes'      => ['username' => ['old' => 'x', 'new' => 'y']],
                'performed_by' => 'admin',
                'performed_at' => $now->modify('-1 hour'),
            ],
            [
                'entity_type'  => 'core.User',
                'entity_id'    => '999',
                'action'       => 'delete',
                'changes'      => ['username' => 'y'],
                'performed_by' => 'admin',
                'performed_at' => $now,
            ],
        ];

        foreach ($fixtures as $row) {
            $this->auditConnection->insert('audit_log', [
                'id'           => Uuid::v7()->toRfc4122(),
                'entity_type'  => $row['entity_type'],
                'entity_id'    => $row['entity_id'],
                'action'       => $row['action'],
                'changes'      => json_encode($row['changes'], JSON_THROW_ON_ERROR),
                'performed_by' => $row['performed_by'],
                'performed_at' => $row['performed_at']->format('Y-m-d H:i:sO'),
                'ip_address'   => null,
                'request_id'   => $this->runTag,
            ]);
        }
    }
}