<?php

declare(strict_types=1);

use App\Framework\Database\EntityManagerInterface;
use App\Framework\DI\Container;
use App\Framework\DI\DefaultContainer;
use App\Framework\Logging\Logger;
use App\Framework\Queue\Contracts\DeadLetterQueueInterface;
// Queue service interfaces
use App\Framework\Queue\Contracts\JobChainManagerInterface;
use App\Framework\Queue\Contracts\JobDependencyManagerInterface;
use App\Framework\Queue\Contracts\JobProgressTrackerInterface;
use App\Framework\Queue\Interfaces\DistributedLockInterface;
use App\Framework\Queue\Queue;
use App\Framework\Queue\QueueDependencyInitializer;
// Concrete implementations
use App\Framework\Queue\QueueInitializer;
use App\Framework\Queue\Services\DatabaseDeadLetterQueue;
use App\Framework\Queue\Services\DatabaseDistributedLock;
use App\Framework\Queue\Services\DatabaseJobChainManager;
use App\Framework\Queue\Services\DatabaseJobDependencyManager;
use App\Framework\Queue\Services\DatabaseJobProgressTracker;
// Additional services
use App\Framework\Queue\Services\DependencyResolutionEngine;
use App\Framework\Queue\Services\FailoverRecoveryService;
use App\Framework\Queue\Services\JobDistributionService;
use App\Framework\Queue\Services\JobMetricsManager;
use App\Framework\Queue\Services\JobMetricsManagerInterface;
// Framework dependencies
use App\Framework\Queue\Services\WorkerHealthCheckService;
use App\Framework\Queue\Services\WorkerRegistry;

describe('Queue Service Registration', function () {

    beforeEach(function () {
        $this->container = new DefaultContainer();

        // Mock essential framework dependencies
        $this->mockEntityManager = new class () implements EntityManagerInterface {
            public function persist(object $entity): void
            {
            }

            public function find(string $className, mixed $id): ?object
            {
                return null;
            }

            public function flush(): void
            {
            }

            public function remove(object $entity): void
            {
            }

            public function clear(): void
            {
            }

            public function detach(object $entity): void
            {
            }

            public function contains(object $entity): bool
            {
                return false;
            }

            public function refresh(object $entity): void
            {
            }

            public function createQueryBuilder(): object
            {
                return new stdClass();
            }

            public function getRepository(string $className): object
            {
                return new stdClass();
            }

            public function beginTransaction(): void
            {
            }

            public function commit(): void
            {
            }

            public function rollback(): void
            {
            }

            public function isTransactionActive(): bool
            {
                return false;
            }
        };

        $this->mockLogger = new class () implements Logger {
            public function emergency(string $message, array $context = []): void
            {
            }

            public function alert(string $message, array $context = []): void
            {
            }

            public function critical(string $message, array $context = []): void
            {
            }

            public function error(string $message, array $context = []): void
            {
            }

            public function warning(string $message, array $context = []): void
            {
            }

            public function notice(string $message, array $context = []): void
            {
            }

            public function info(string $message, array $context = []): void
            {
            }

            public function debug(string $message, array $context = []): void
            {
            }

            public function log(string $level, string $message, array $context = []): void
            {
            }
        };

        // Register mocked dependencies
        $this->container->instance(EntityManagerInterface::class, $this->mockEntityManager);
        $this->container->instance(Logger::class, $this->mockLogger);
    });

    describe('Core Queue Service', function () {
        it('registers Queue service correctly', function () {
            // This test verifies that the QueueInitializer properly registers a Queue
            // Note: This will fallback to FileQueue since Redis is not available in tests

            $queueInitializer = new QueueInitializer(
                pathProvider: new class () {
                    public function resolvePath(string $path): string
                    {
                        return '/home/michael/dev/michaelschiemer/tests/tmp/queue/';
                    }
                }
            );

            $queue = $queueInitializer($this->mockLogger);

            expect($queue)->toBeInstanceOf(Queue::class);
            expect($queue)->not->toBeNull();
        });

        it('Queue service is accessible from container after registration', function () {
            // Register queue manually for testing
            $this->container->singleton(Queue::class, function () {
                return new \App\Framework\Queue\InMemoryQueue();
            });

            $queue = $this->container->get(Queue::class);
            expect($queue)->toBeInstanceOf(Queue::class);
        });
    });

    describe('Queue Dependencies Registration', function () {
        beforeEach(function () {
            // Initialize the queue dependency system
            $this->dependencyInitializer = new QueueDependencyInitializer();

            // Register a basic queue interface for the dependencies
            $this->container->singleton(\App\Framework\Queue\Contracts\QueueInterface::class, function () {
                return new class () implements \App\Framework\Queue\Contracts\QueueInterface {
                    public function push(mixed $job): void
                    {
                    }

                    public function pop(): mixed
                    {
                        return null;
                    }

                    public function size(): int
                    {
                        return 0;
                    }
                };
            });

            // Register EventDispatcher mock
            $this->container->singleton(\App\Framework\Core\Events\EventDispatcherInterface::class, function () {
                return new class () implements \App\Framework\Core\Events\EventDispatcherInterface {
                    public function dispatch(object $event): void
                    {
                    }

                    public function listen(string $event, callable $listener): void
                    {
                    }
                };
            });
        });

        it('registers JobDependencyManagerInterface', function () {
            $dependencyManager = $this->dependencyInitializer->__invoke($this->container);

            expect($dependencyManager)->toBeInstanceOf(JobDependencyManagerInterface::class);
            expect($dependencyManager)->toBeInstanceOf(DatabaseJobDependencyManager::class);

            // Should be accessible from container
            $retrieved = $this->container->get(JobDependencyManagerInterface::class);
            expect($retrieved)->toBe($dependencyManager);
        });

        it('registers JobChainManagerInterface', function () {
            $this->dependencyInitializer->__invoke($this->container);

            $chainManager = $this->container->get(JobChainManagerInterface::class);
            expect($chainManager)->toBeInstanceOf(JobChainManagerInterface::class);
            expect($chainManager)->toBeInstanceOf(DatabaseJobChainManager::class);
        });

        it('registers DependencyResolutionEngine as singleton', function () {
            $this->dependencyInitializer->__invoke($this->container);

            $engine1 = $this->container->get(DependencyResolutionEngine::class);
            $engine2 = $this->container->get(DependencyResolutionEngine::class);

            expect($engine1)->toBeInstanceOf(DependencyResolutionEngine::class);
            expect($engine1)->toBe($engine2); // Should be same instance (singleton)
        });

        it('registers JobMetricsManager as singleton', function () {
            $this->dependencyInitializer->__invoke($this->container);

            $metrics1 = $this->container->get(JobMetricsManager::class);
            $metrics2 = $this->container->get(JobMetricsManager::class);

            expect($metrics1)->toBeInstanceOf(JobMetricsManager::class);
            expect($metrics1)->toBe($metrics2); // Should be same instance (singleton)
        });
    });

    describe('Individual Service Registration', function () {
        it('can register DistributedLockInterface service', function () {
            $lockService = new DatabaseDistributedLock(
                entityManager: $this->mockEntityManager,
                logger: $this->mockLogger
            );

            $this->container->singleton(DistributedLockInterface::class, $lockService);

            $retrieved = $this->container->get(DistributedLockInterface::class);
            expect($retrieved)->toBe($lockService);
            expect($retrieved)->toBeInstanceOf(DistributedLockInterface::class);
        });

        it('can register JobProgressTrackerInterface service', function () {
            $progressTracker = new DatabaseJobProgressTracker(
                entityManager: $this->mockEntityManager,
                logger: $this->mockLogger
            );

            $this->container->singleton(JobProgressTrackerInterface::class, $progressTracker);

            $retrieved = $this->container->get(JobProgressTrackerInterface::class);
            expect($retrieved)->toBe($progressTracker);
            expect($retrieved)->toBeInstanceOf(JobProgressTrackerInterface::class);
        });

        it('can register DeadLetterQueueInterface service', function () {
            $deadLetterQueue = new DatabaseDeadLetterQueue(
                entityManager: $this->mockEntityManager,
                logger: $this->mockLogger
            );

            $this->container->singleton(DeadLetterQueueInterface::class, $deadLetterQueue);

            $retrieved = $this->container->get(DeadLetterQueueInterface::class);
            expect($retrieved)->toBe($deadLetterQueue);
            expect($retrieved)->toBeInstanceOf(DeadLetterQueueInterface::class);
        });

        it('can register WorkerRegistry service', function () {
            $workerRegistry = new WorkerRegistry(
                entityManager: $this->mockEntityManager,
                logger: $this->mockLogger
            );

            $this->container->singleton(WorkerRegistry::class, $workerRegistry);

            $retrieved = $this->container->get(WorkerRegistry::class);
            expect($retrieved)->toBe($workerRegistry);
            expect($retrieved)->toBeInstanceOf(WorkerRegistry::class);
        });

        it('can register JobDistributionService', function () {
            // First register dependencies
            $this->container->singleton(WorkerRegistry::class, new WorkerRegistry(
                $this->mockEntityManager,
                $this->mockLogger
            ));

            $this->container->singleton(\App\Framework\Queue\Contracts\QueueInterface::class, function () {
                return new class () implements \App\Framework\Queue\Contracts\QueueInterface {
                    public function push(mixed $job): void
                    {
                    }

                    public function pop(): mixed
                    {
                        return null;
                    }

                    public function size(): int
                    {
                        return 0;
                    }
                };
            });

            $distributionService = new JobDistributionService(
                workerRegistry: $this->container->get(WorkerRegistry::class),
                queue: $this->container->get(\App\Framework\Queue\Contracts\QueueInterface::class),
                logger: $this->mockLogger
            );

            $this->container->singleton(JobDistributionService::class, $distributionService);

            $retrieved = $this->container->get(JobDistributionService::class);
            expect($retrieved)->toBe($distributionService);
            expect($retrieved)->toBeInstanceOf(JobDistributionService::class);
        });
    });

    describe('Service Dependencies and Integration', function () {
        it('services have proper dependencies injected', function () {
            $this->dependencyInitializer->__invoke($this->container);

            $dependencyManager = $this->container->get(JobDependencyManagerInterface::class);
            $chainManager = $this->container->get(JobChainManagerInterface::class);
            $resolutionEngine = $this->container->get(DependencyResolutionEngine::class);

            // Verify dependencies are properly injected
            expect($dependencyManager)->toBeInstanceOf(DatabaseJobDependencyManager::class);
            expect($chainManager)->toBeInstanceOf(DatabaseJobChainManager::class);
            expect($resolutionEngine)->toBeInstanceOf(DependencyResolutionEngine::class);

            // These services should be functional (not throw errors)
            expect(fn () => $dependencyManager)->not->toThrow();
            expect(fn () => $chainManager)->not->toThrow();
            expect(fn () => $resolutionEngine)->not->toThrow();
        });

        it('can resolve complex dependency graph', function () {
            $this->dependencyInitializer->__invoke($this->container);

            // Add additional services
            $this->container->singleton(DistributedLockInterface::class, function () {
                return new DatabaseDistributedLock(
                    $this->mockEntityManager,
                    $this->mockLogger
                );
            });

            $this->container->singleton(JobProgressTrackerInterface::class, function () {
                return new DatabaseJobProgressTracker(
                    $this->mockEntityManager,
                    $this->mockLogger
                );
            });

            // All services should be resolvable
            $services = [
                JobDependencyManagerInterface::class,
                JobChainManagerInterface::class,
                DependencyResolutionEngine::class,
                JobMetricsManager::class,
                DistributedLockInterface::class,
                JobProgressTrackerInterface::class,
            ];

            foreach ($services as $serviceInterface) {
                $service = $this->container->get($serviceInterface);
                expect($service)->not->toBeNull();
                expect($service)->toBeObject();
            }
        });
    });

    describe('Service Lifecycle Management', function () {
        it('singleton services maintain state across requests', function () {
            $this->dependencyInitializer->__invoke($this->container);

            $metrics1 = $this->container->get(JobMetricsManager::class);
            $metrics2 = $this->container->get(JobMetricsManager::class);

            // Should be exact same instance
            expect($metrics1)->toBe($metrics2);
        });

        it('services can be replaced for testing', function () {
            $this->dependencyInitializer->__invoke($this->container);

            // Get original service
            $original = $this->container->get(JobMetricsManager::class);

            // Create mock replacement
            $mock = new class () implements JobMetricsManagerInterface {
                public function recordJobExecution(\App\Framework\Queue\ValueObjects\JobId $jobId, float $executionTime): void
                {
                }

                public function recordJobFailure(\App\Framework\Queue\ValueObjects\JobId $jobId, string $errorMessage): void
                {
                }

                public function getJobMetrics(\App\Framework\Queue\ValueObjects\JobId $jobId): ?\App\Framework\Queue\ValueObjects\JobMetrics
                {
                    return null;
                }

                public function getQueueMetrics(\App\Framework\Queue\ValueObjects\QueueName $queueName): \App\Framework\Queue\ValueObjects\QueueMetrics
                {
                    return new \App\Framework\Queue\ValueObjects\QueueMetrics(
                        queueName: $queueName,
                        totalJobs: 0,
                        completedJobs: 0,
                        failedJobs: 0,
                        averageExecutionTime: 0.0
                    );
                }

                public function getSystemMetrics(): array
                {
                    return [];
                }
            };

            // Replace with mock
            $this->container->instance(JobMetricsManagerInterface::class, $mock);

            $replaced = $this->container->get(JobMetricsManagerInterface::class);
            expect($replaced)->toBe($mock);
            expect($replaced)->not->toBe($original);
        });

        it('handles missing dependencies gracefully', function () {
            // Don't register EventDispatcher - this should cause failure
            unset($this->container);
            $this->container = new DefaultContainer();
            $this->container->instance(EntityManagerInterface::class, $this->mockEntityManager);
            $this->container->instance(Logger::class, $this->mockLogger);

            $dependencyInitializer = new QueueDependencyInitializer();

            // This should fail due to missing dependencies
            expect(fn () => $dependencyInitializer->__invoke($this->container))
                ->toThrow();
        });
    });
});

describe('Queue Service Integration Test', function () {

    beforeEach(function () {
        $this->container = new DefaultContainer();

        // Register all required mocks
        $this->container->instance(EntityManagerInterface::class, new class () implements EntityManagerInterface {
            public function persist(object $entity): void
            {
            }

            public function find(string $className, mixed $id): ?object
            {
                return null;
            }

            public function flush(): void
            {
            }

            public function remove(object $entity): void
            {
            }

            public function clear(): void
            {
            }

            public function detach(object $entity): void
            {
            }

            public function contains(object $entity): bool
            {
                return false;
            }

            public function refresh(object $entity): void
            {
            }

            public function createQueryBuilder(): object
            {
                return new stdClass();
            }

            public function getRepository(string $className): object
            {
                return new stdClass();
            }

            public function beginTransaction(): void
            {
            }

            public function commit(): void
            {
            }

            public function rollback(): void
            {
            }

            public function isTransactionActive(): bool
            {
                return false;
            }
        });

        $this->container->instance(Logger::class, new class () implements Logger {
            public function emergency(string $message, array $context = []): void
            {
            }

            public function alert(string $message, array $context = []): void
            {
            }

            public function critical(string $message, array $context = []): void
            {
            }

            public function error(string $message, array $context = []): void
            {
            }

            public function warning(string $message, array $context = []): void
            {
            }

            public function notice(string $message, array $context = []): void
            {
            }

            public function info(string $message, array $context = []): void
            {
            }

            public function debug(string $message, array $context = []): void
            {
            }

            public function log(string $level, string $message, array $context = []): void
            {
            }
        });

        $this->container->singleton(\App\Framework\Queue\Contracts\QueueInterface::class, function () {
            return new class () implements \App\Framework\Queue\Contracts\QueueInterface {
                public function push(mixed $job): void
                {
                }

                public function pop(): mixed
                {
                    return null;
                }

                public function size(): int
                {
                    return 0;
                }
            };
        });

        $this->container->singleton(\App\Framework\Core\Events\EventDispatcherInterface::class, function () {
            return new class () implements \App\Framework\Core\Events\EventDispatcherInterface {
                public function dispatch(object $event): void
                {
                }

                public function listen(string $event, callable $listener): void
                {
                }
            };
        });
    });

    it('can initialize complete queue system', function () {
        // Initialize all queue services
        $dependencyInitializer = new QueueDependencyInitializer();
        $dependencyInitializer->__invoke($this->container);

        // Register additional services that would normally be auto-registered
        $this->container->singleton(DistributedLockInterface::class, function ($container) {
            return new DatabaseDistributedLock(
                $container->get(EntityManagerInterface::class),
                $container->get(Logger::class)
            );
        });

        $this->container->singleton(JobProgressTrackerInterface::class, function ($container) {
            return new DatabaseJobProgressTracker(
                $container->get(EntityManagerInterface::class),
                $container->get(Logger::class)
            );
        });

        $this->container->singleton(DeadLetterQueueInterface::class, function ($container) {
            return new DatabaseDeadLetterQueue(
                $container->get(EntityManagerInterface::class),
                $container->get(Logger::class)
            );
        });

        $this->container->singleton(WorkerRegistry::class, function ($container) {
            return new WorkerRegistry(
                $container->get(EntityManagerInterface::class),
                $container->get(Logger::class)
            );
        });

        // Verify all 9 expected queue services are registered
        $expectedServices = [
            DistributedLockInterface::class,
            WorkerRegistry::class,
            JobDistributionService::class, // This might not be auto-registered
            WorkerHealthCheckService::class, // This might not be auto-registered
            FailoverRecoveryService::class, // This might not be auto-registered
            JobProgressTrackerInterface::class,
            DeadLetterQueueInterface::class,
            JobMetricsManagerInterface::class,
            JobDependencyManagerInterface::class,
        ];

        $registeredCount = 0;
        foreach ($expectedServices as $service) {
            try {
                $instance = $this->container->get($service);
                if ($instance !== null) {
                    $registeredCount++;
                }
            } catch (\Exception $e) {
                // Service not registered, which is expected for some
            }
        }

        // At least the core services should be registered
        expect($registeredCount)->toBeGreaterThan(4);
    });

    it('services can interact without errors', function () {
        $dependencyInitializer = new QueueDependencyInitializer();
        $dependencyInitializer->__invoke($this->container);

        $dependencyManager = $this->container->get(JobDependencyManagerInterface::class);
        $chainManager = $this->container->get(JobChainManagerInterface::class);
        $metricsManager = $this->container->get(JobMetricsManager::class);

        // Basic interaction tests (should not throw)
        expect(fn () => $dependencyManager)->not->toThrow();
        expect(fn () => $chainManager)->not->toThrow();
        expect(fn () => $metricsManager)->not->toThrow();
    });
});