<?php

namespace MintyPHP\Tests\Module\Audit\Service;

use MintyPHP\Http\ApiAuth;
use MintyPHP\Http\RequestContext;
use MintyPHP\Http\RequestRuntime;
use MintyPHP\Module\Audit\Repository\ApiAuditLogRepository;
use MintyPHP\Module\Audit\Service\ApiAuditService;
use PHPUnit\Framework\TestCase;

class ApiAuditServiceTest extends TestCase
{
    private array $serverBackup = [];
    private array $getBackup = [];

    protected function setUp(): void
    {
        $this->serverBackup = $_SERVER;
        $this->getBackup = $_GET;
        RequestContext::resetForTests();
        ApiAuth::authenticate();
    }

    protected function tearDown(): void
    {
        $_SERVER = $this->serverBackup;
        $_GET = $this->getBackup;
        RequestContext::resetForTests();
        ApiAuth::authenticate();
    }

    public function testCurrentRequestIdIsNullBeforeStart(): void
    {
        $service = new ApiAuditService(
            $this->createMock(ApiAuditLogRepository::class),
            new RequestRuntime()
        );
        $this->assertNull($service->currentRequestId());
    }

    public function testCurrentRequestIdIsGeneratedForRegularRequests(): void
    {
        $_SERVER['REQUEST_METHOD'] = 'GET';
        $_SERVER['REQUEST_URI'] = '/api/v1/me?x=1';
        $_GET = ['x' => '1'];

        $service = new ApiAuditService(
            $this->createMock(ApiAuditLogRepository::class),
            new RequestRuntime()
        );
        $service->startRequestContext();

        $requestId = $service->currentRequestId();
        $this->assertNotNull($requestId);
        $this->assertMatchesRegularExpression(
            '/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i',
            $requestId
        );

        $service->startRequestContext();
        $this->assertSame($requestId, $service->currentRequestId());
    }

    public function testCurrentRequestIdStaysNullForOptionsRequests(): void
    {
        $_SERVER['REQUEST_METHOD'] = 'OPTIONS';
        $_SERVER['REQUEST_URI'] = '/api/v1/me';
        $_GET = [];

        $service = new ApiAuditService(
            $this->createMock(ApiAuditLogRepository::class),
            new RequestRuntime()
        );
        $service->startRequestContext();

        $this->assertNull($service->currentRequestId());
    }

    public function testFinishStoresOnlyAllowlistedQueryKeysAndHashedNetworkMetadata(): void
    {
        $_SERVER['REQUEST_METHOD'] = 'GET';
        $_SERVER['REQUEST_URI'] = '/api/v1/users?active=1&email=user@example.com&token=secret&search=max';
        $_SERVER['REMOTE_ADDR'] = '203.0.113.10';
        $_SERVER['HTTP_USER_AGENT'] = 'TestAgent/1.0';
        $_GET = [
            'active' => '1',
            'email' => 'user@example.com',
            'token' => 'secret',
            'search' => 'max',
        ];

        $captured = null;
        $repository = $this->createMock(ApiAuditLogRepository::class);
        $repository->expects($this->once())
            ->method('create')
            ->willReturnCallback(static function (array $payload) use (&$captured): int {
                $captured = $payload;
                return 1;
            });

        $service = new ApiAuditService($repository, new RequestRuntime());
        $service->startRequestContext();
        $service->finish(204);

        $this->assertIsArray($captured);
        $decodedQuery = json_decode((string) ($captured['query_json'] ?? ''), true);
        $this->assertSame(['keys' => ['active', 'search']], $decodedQuery);
        $this->assertSame(RequestContext::hashValue('203.0.113.10'), $captured['ip']);
        $this->assertSame(RequestContext::hashValue('TestAgent/1.0'), $captured['user_agent']);
        $this->assertNotSame('203.0.113.10', $captured['ip']);
        $this->assertNotSame('TestAgent/1.0', $captured['user_agent']);
    }

    public function testFinishSkipsQueryMetadataWhenNoAllowlistedKeyExists(): void
    {
        $_SERVER['REQUEST_METHOD'] = 'GET';
        $_SERVER['REQUEST_URI'] = '/api/v1/users?email=user@example.com&token=secret';
        $_SERVER['REMOTE_ADDR'] = '203.0.113.20';
        $_SERVER['HTTP_USER_AGENT'] = 'NoAllowlistAgent/1.0';
        $_GET = [
            'email' => 'user@example.com',
            'token' => 'secret',
        ];

        $captured = null;
        $repository = $this->createMock(ApiAuditLogRepository::class);
        $repository->expects($this->once())
            ->method('create')
            ->willReturnCallback(static function (array $payload) use (&$captured): int {
                $captured = $payload;
                return 1;
            });

        $service = new ApiAuditService($repository, new RequestRuntime());
        $service->startRequestContext();
        $service->finish(200);

        $this->assertIsArray($captured);
        $this->assertNull($captured['query_json'] ?? null);
    }
}