<?php
declare(strict_types=1);

namespace Tests\Auth;

use App\Auth\Infrastructure\PdoPasswordResetRepository as PasswordResetRepository;
use PDO;
use PDOStatement;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;

/**
 * Tests unitaires pour PasswordResetRepository.
 *
 * Vérifie que chaque méthode construit le bon SQL avec les bons paramètres,
 * notamment la logique de non-suppression des tokens (used_at) et la
 * condition AND used_at IS NULL pour les tokens actifs.
 *
 * PDO et PDOStatement sont mockés pour isoler complètement
 * le dépôt de la base de données.
 */
#[\PHPUnit\Framework\Attributes\AllowMockObjectsWithoutExpectations]
final class PasswordResetRepositoryTest extends TestCase
{
    /** @var PDO&MockObject */
    private PDO $db;

    private PasswordResetRepository $repository;

    /**
     * Initialise le mock PDO et le dépôt avant chaque test.
     */
    protected function setUp(): void
    {
        $this->db         = $this->createMock(PDO::class);
        $this->repository = new PasswordResetRepository($this->db);
    }

    // ── Helper ─────────────────────────────────────────────────────

    private function stmtOk(array|false $fetchReturn = false): PDOStatement&MockObject
    {
        $stmt = $this->createMock(PDOStatement::class);
        $stmt->method('execute')->willReturn(true);
        $stmt->method('fetch')->willReturn($fetchReturn);

        return $stmt;
    }


    // ── create ─────────────────────────────────────────────────────

    /**
     * create() doit préparer un INSERT sur 'password_resets'
     * avec le user_id, le token_hash et la date d'expiration fournis.
     */
    public function testCreateCallsInsertWithCorrectData(): void
    {
        $userId    = 1;
        $tokenHash = hash('sha256', 'montokenbrut');
        $expiresAt = date('Y-m-d H:i:s', time() + 3600);
        $stmt      = $this->stmtOk();

        $this->db->expects($this->once())->method('prepare')
            ->with($this->stringContains('INSERT INTO password_resets'))
            ->willReturn($stmt);

        $stmt->expects($this->once())
            ->method('execute')
            ->with($this->callback(function (array $data) use ($userId, $tokenHash, $expiresAt): bool {
                return $data[':user_id']    === $userId
                    && $data[':token_hash'] === $tokenHash
                    && $data[':expires_at'] === $expiresAt
                    && isset($data[':created_at']);
            }));

        $this->repository->create($userId, $tokenHash, $expiresAt);
    }

    /**
     * create() doit renseigner :created_at au format 'Y-m-d H:i:s'.
     */
    public function testCreateSetsCreatedAt(): void
    {
        $stmt = $this->stmtOk();
        $this->db->expects($this->once())->method('prepare')->willReturn($stmt);

        $stmt->expects($this->once())
            ->method('execute')
            ->with($this->callback(function (array $data): bool {
                return isset($data[':created_at'])
                    && (bool) \DateTime::createFromFormat('Y-m-d H:i:s', $data[':created_at']);
            }));

        $this->repository->create(1, 'hash', date('Y-m-d H:i:s', time() + 3600));
    }


    // ── findActiveByHash ───────────────────────────────────────────

    /**
     * findActiveByHash() doit retourner null si aucun token actif ne correspond au hash.
     */
    public function testFindActiveByHashReturnsNullWhenMissing(): void
    {
        $stmt = $this->stmtOk(false);
        $this->db->expects($this->once())->method('prepare')->willReturn($stmt);

        $this->assertNull($this->repository->findActiveByHash('hashquinaexistepas'));
    }

    /**
     * findActiveByHash() doit retourner la ligne si un token actif correspond au hash.
     */
    public function testFindActiveByHashReturnsRowWhenFound(): void
    {
        $tokenHash = hash('sha256', 'montokenbrut');
        $row       = [
            'id'         => 1,
            'user_id'    => 42,
            'token_hash' => $tokenHash,
            'expires_at' => date('Y-m-d H:i:s', time() + 3600),
            'used_at'    => null,
            'created_at' => date('Y-m-d H:i:s'),
        ];

        $stmt = $this->stmtOk($row);
        $this->db->method('prepare')->willReturn($stmt);

        $this->assertSame($row, $this->repository->findActiveByHash($tokenHash));
    }

    /**
     * findActiveByHash() doit inclure AND used_at IS NULL dans le SQL
     * pour n'obtenir que les tokens non consommés.
     */
    public function testFindActiveByHashFiltersOnNullUsedAt(): void
    {
        $tokenHash = hash('sha256', 'montokenbrut');
        $stmt      = $this->stmtOk(false);

        $this->db->expects($this->once())
            ->method('prepare')
            ->with($this->stringContains('used_at IS NULL'))
            ->willReturn($stmt);

        $stmt->expects($this->once())
            ->method('execute')
            ->with([':token_hash' => $tokenHash]);

        $this->repository->findActiveByHash($tokenHash);
    }


    // ── invalidateByUserId ─────────────────────────────────────────

    /**
     * invalidateByUserId() doit préparer un UPDATE renseignant :used_at
     * pour tous les tokens non consommés de l'utilisateur.
     */
    public function testInvalidateByUserIdCallsUpdateWithUsedAt(): void
    {
        $userId = 42;
        $stmt   = $this->stmtOk();

        $this->db->expects($this->once())->method('prepare')
            ->with($this->stringContains('UPDATE password_resets'))
            ->willReturn($stmt);

        $stmt->expects($this->once())
            ->method('execute')
            ->with($this->callback(function (array $data) use ($userId): bool {
                return $data[':user_id'] === $userId
                    && isset($data[':used_at'])
                    && (bool) \DateTime::createFromFormat('Y-m-d H:i:s', $data[':used_at']);
            }));

        $this->repository->invalidateByUserId($userId);
    }

    /**
     * invalidateByUserId() doit inclure AND used_at IS NULL dans le SQL
     * pour ne cibler que les tokens encore actifs.
     */
    public function testInvalidateByUserIdFiltersOnActiveTokens(): void
    {
        $stmt = $this->stmtOk();

        $this->db->expects($this->once())
            ->method('prepare')
            ->with($this->stringContains('used_at IS NULL'))
            ->willReturn($stmt);

        $this->repository->invalidateByUserId(1);
    }

    /**
     * invalidateByUserId() ne doit pas utiliser DELETE — les tokens
     * sont invalidés via used_at pour conserver la traçabilité.
     */
    public function testInvalidateByUserIdNeverCallsDelete(): void
    {
        $stmt = $this->stmtOk();
        $this->db->expects($this->once())->method('prepare')
            ->with($this->stringContains('UPDATE'))
            ->willReturn($stmt);

        $this->db->expects($this->never())->method('exec');

        $this->repository->invalidateByUserId(1);
    }


    // ── consumeActiveToken ────────────────────────────────────────

    /**
     * consumeActiveToken() doit utiliser UPDATE ... RETURNING pour consommer
     * et retourner le token en une seule opération atomique.
     */
    public function testConsumeActiveTokenUsesAtomicUpdateReturning(): void
    {
        $row = ['id' => 1, 'user_id' => 42, 'token_hash' => 'hash', 'used_at' => null];
        $stmt = $this->stmtOk($row);

        $this->db->expects($this->once())
            ->method('prepare')
            ->with($this->callback(fn (string $sql): bool =>
                str_contains($sql, 'UPDATE password_resets')
                && str_contains($sql, 'used_at IS NULL')
                && str_contains($sql, 'RETURNING *')
            ))
            ->willReturn($stmt);

        $result = $this->repository->consumeActiveToken('hash', '2024-01-01 00:00:00');

        $this->assertSame($row, $result);
    }

    /**
     * consumeActiveToken() retourne null si aucun token actif ne correspond.
     */
    public function testConsumeActiveTokenReturnsNullWhenNoRowMatches(): void
    {
        $stmt = $this->stmtOk(false);
        $this->db->method('prepare')->willReturn($stmt);

        $this->assertNull($this->repository->consumeActiveToken('missing', '2024-01-01 00:00:00'));
    }
}