"""Comprehensive test suite for Python reactive components."""

import asyncio
import pytest
import time
from unittest.mock import Mock, AsyncMock, patch
from typing import Dict, Any, Optional, List

# Import the reactive components
from apexnova.stub.service.reactive_application_insights_service import (
    ReactiveApplicationInsightsService,
)
from apexnova.stub.service.reactive_request_handler_service import (
    ReactiveRequestHandlerService,
)
from apexnova.stub.repository.reactive_gremlin_authorization_repository import (
    ReactiveGremlinAuthorizationRepository,
)
from apexnova.stub.repository.reactive_authorization_cosmos_repository import (
    MockReactiveAuthorizationCosmosRepository,
)
from apexnova.stub.security.reactive_secret_util import ReactiveSecretUtil
from apexnova.stub.integration.reactive_integration_service import (
    ReactiveIntegrationService,
    ServiceConfiguration,
)


# Mock model for testing
class MockModel:
    def __init__(self, id: str, data: str):
        self.id = id
        self.data = data

    def __eq__(self, other):
        return (
            isinstance(other, MockModel)
            and self.id == other.id
            and self.data == other.data
        )


class TestReactiveApplicationInsightsService:
    """Test suite for ReactiveApplicationInsightsService."""

    @pytest.fixture
    async def service(self):
        """Create service instance for testing."""
        service = ReactiveApplicationInsightsService(
            max_concurrent_operations=10, enable_caching=True, cache_ttl=60
        )
        yield service
        await service.shutdown()

    @pytest.mark.asyncio
    async def test_track_event_async(self, service):
        """Test async event tracking."""
        await service.track_event_async(
            event_name="test_event", properties={"key": "value"}
        )

        # Check metrics
        health = await service.get_health_status()
        assert health["metrics"]["operation_counts"]["track_event"] == 1

    @pytest.mark.asyncio
    async def test_track_request_async(self, service):
        """Test async request tracking."""
        await service.track_request_async(
            request_name="test_request",
            duration_millis=100,
            response_code="200",
            success=True,
        )

        health = await service.get_health_status()
        assert health["metrics"]["operation_counts"]["track_request"] == 1

    @pytest.mark.asyncio
    async def test_track_exception_async(self, service):
        """Test async exception tracking."""
        exception = ValueError("test error")
        await service.track_exception_async(exception=exception)

        health = await service.get_health_status()
        assert health["metrics"]["operation_counts"]["track_exception"] == 1

    @pytest.mark.asyncio
    async def test_event_stream(self, service):
        """Test event streaming."""
        events_received = []

        async def collect_events():
            count = 0
            async for event in service.get_event_stream():
                events_received.append(event)
                count += 1
                if count >= 3:
                    break

        # Start collecting events
        collect_task = asyncio.create_task(collect_events())

        # Generate some events
        await asyncio.sleep(0.1)  # Let the stream start
        await service.track_event_async("event1", {"data": 1})
        await service.track_event_async("event2", {"data": 2})
        await service.track_event_async("event3", {"data": 3})

        # Wait for collection to complete
        await collect_task

        assert len(events_received) == 3
        assert events_received[0]["event_name"] == "event1"

    @pytest.mark.asyncio
    async def test_circuit_breaker(self, service):
        """Test circuit breaker functionality."""
        # Force failures to trigger circuit breaker
        original_method = service._track_sync

        def failing_method(*args, **kwargs):
            raise RuntimeError("Simulated failure")

        service._track_sync = failing_method

        # Trigger failures
        for _ in range(6):  # More than failure threshold
            try:
                await service.track_event_async("failing_event")
            except RuntimeError:
                pass

        health = await service.get_health_status()
        assert health["circuit_breaker"]["state"] == "OPEN"

        # Reset for cleanup
        service._track_sync = original_method

    @pytest.mark.asyncio
    async def test_caching(self, service):
        """Test caching functionality."""
        # Track same event multiple times
        await service.track_event_async("cached_event", {"data": "same"})
        await service.track_event_async("cached_event", {"data": "same"})

        health = await service.get_health_status()
        # Should have some cache activity (exact numbers depend on implementation)
        assert "cache" in health


class TestReactiveRequestHandlerService:
    """Test suite for ReactiveRequestHandlerService."""

    @pytest.fixture
    async def app_insights(self):
        """Create app insights service for testing."""
        service = ReactiveApplicationInsightsService()
        yield service
        await service.shutdown()

    @pytest.fixture
    async def service(self, app_insights):
        """Create request handler service for testing."""
        service = ReactiveRequestHandlerService(
            application_insights_service=app_insights,
            max_concurrent_requests=10,
            enable_detailed_metrics=True,
        )
        yield service
        await service.shutdown()

    @pytest.mark.asyncio
    async def test_handle_request_async(self, service):
        """Test async request handling."""

        async def mock_service_call(request, response_observer):
            return f"processed {request}"

        mock_response_observer = Mock()
        mock_response_observer.on_completed = AsyncMock()

        await service.handle_request_with_context_async(
            authorization_context=None,
            service_call=mock_service_call,
            request="test_request",
            response_observer=mock_response_observer,
        )

        health = await service.get_health_status()
        assert health["metrics"]["total_requests"] == 1
        assert health["metrics"]["success_rate"] == 1.0

    @pytest.mark.asyncio
    async def test_handle_sync_service_call(self, service):
        """Test handling of sync service calls."""

        def sync_service_call(request, response_observer):
            return f"sync processed {request}"

        mock_response_observer = Mock()
        mock_response_observer.on_completed = Mock()

        await service.handle_request_with_context_async(
            authorization_context=None,
            service_call=sync_service_call,
            request="test_request",
            response_observer=mock_response_observer,
        )

        health = await service.get_health_status()
        assert health["metrics"]["total_requests"] == 1

    @pytest.mark.asyncio
    async def test_exception_handling(self, service):
        """Test exception handling."""

        async def failing_service_call(request, response_observer):
            raise ValueError("Service error")

        mock_response_observer = Mock()
        mock_response_observer.on_completed = AsyncMock()

        await service.handle_request_with_context_async(
            authorization_context=None,
            service_call=failing_service_call,
            request="test_request",
            response_observer=mock_response_observer,
        )

        health = await service.get_health_status()
        assert health["metrics"]["total_requests"] == 1
        assert health["metrics"]["success_rate"] == 0.0

    @pytest.mark.asyncio
    async def test_request_timeout(self, service):
        """Test request timeout handling."""

        async def slow_service_call(request, response_observer):
            await asyncio.sleep(2)  # Longer than default timeout

        mock_response_observer = Mock()
        mock_response_observer.on_completed = AsyncMock()

        # Set a short timeout for testing
        service._request_timeout = 0.1

        await service.handle_request_with_context_async(
            authorization_context=None,
            service_call=slow_service_call,
            request="test_request",
            response_observer=mock_response_observer,
        )

        health = await service.get_health_status()
        assert health["metrics"]["failed_requests"] == 1

    @pytest.mark.asyncio
    async def test_metrics_stream(self, service):
        """Test real-time metrics streaming."""
        metrics_received = []

        async def collect_metrics():
            count = 0
            async for metrics in service.get_request_metrics_stream():
                metrics_received.append(metrics)
                count += 1
                if count >= 2:
                    break

        # Start collecting metrics
        collect_task = asyncio.create_task(collect_metrics())

        # Wait a bit for the stream to start
        await asyncio.sleep(0.1)

        # Process a request to generate metrics
        async def mock_service_call(request, response_observer):
            pass

        mock_response_observer = Mock()
        mock_response_observer.on_completed = AsyncMock()

        await service.handle_request_with_context_async(
            authorization_context=None,
            service_call=mock_service_call,
            request="test",
            response_observer=mock_response_observer,
        )

        # Wait for metrics collection
        await collect_task

        assert len(metrics_received) == 2
        assert "total_requests" in metrics_received[0]


class TestReactiveSecretUtil:
    """Test suite for ReactiveSecretUtil."""

    @pytest.fixture
    async def service(self):
        """Create secret util service for testing."""
        service = ReactiveSecretUtil(max_concurrent_operations=10, enable_caching=True)
        yield service
        await service.shutdown()

    @pytest.mark.asyncio
    async def test_generate_secret_key(self, service):
        """Test secret key generation."""
        key = await service.generate_secret_key_async()
        assert isinstance(key, str)
        assert len(key) > 0

    @pytest.mark.asyncio
    async def test_jwt_operations(self, service):
        """Test JWT generation and verification."""
        secret_key = await service.generate_secret_key_async()
        payload = {"user_id": "123", "role": "admin"}

        # Generate JWT
        jwt_token = await service.generate_jwt_async(payload, secret_key)
        assert jwt_token.token is not None
        assert jwt_token.payload["user_id"] == "123"
        assert jwt_token.expires_at is not None

        # Verify JWT
        verified_payload = await service.verify_jwt_async(jwt_token.token, secret_key)
        assert verified_payload["user_id"] == "123"

    @pytest.mark.asyncio
    async def test_jwt_refresh(self, service):
        """Test JWT token refresh."""
        secret_key = await service.generate_secret_key_async()
        payload = {"user_id": "123"}

        # Generate initial token
        original_token = await service.generate_jwt_async(
            payload, secret_key, expiry_seconds=1
        )

        # Wait for token to be close to expiry
        await asyncio.sleep(0.5)

        # Refresh token
        new_token = await service.refresh_jwt_async(original_token.token, secret_key)
        assert new_token.token != original_token.token
        assert new_token.payload["user_id"] == "123"

    @pytest.mark.asyncio
    async def test_hashing(self, service):
        """Test data hashing."""
        data = "test data"
        hash1 = await service.hash_async(data)
        hash2 = await service.hash_async(data)

        # Same data should produce same hash
        assert hash1 == hash2

        # Different data should produce different hash
        hash3 = await service.hash_async("different data")
        assert hash1 != hash3

    @pytest.mark.asyncio
    async def test_hmac(self, service):
        """Test HMAC generation."""
        data = "test data"
        key = "secret key"

        hmac1 = await service.hmac_async(data, key)
        hmac2 = await service.hmac_async(data, key)

        assert hmac1 == hmac2
        assert isinstance(hmac1, str)

    @pytest.mark.asyncio
    async def test_encryption_decryption(self, service):
        """Test symmetric encryption and decryption."""
        data = "sensitive information"
        key = await service.generate_secret_key_async()

        # Encrypt
        encrypted = await service.encrypt_symmetric_async(data, key)
        assert encrypted.ciphertext != data.encode()

        # Decrypt
        decrypted = await service.decrypt_symmetric_async(encrypted, key)
        assert decrypted.decode() == data

    @pytest.mark.asyncio
    async def test_jwt_validation_stream(self, service):
        """Test JWT validation streaming."""
        secret_key = await service.generate_secret_key_async()

        # Generate token stream
        async def token_stream():
            # Valid token
            valid_token = await service.generate_jwt_async({"user": "test"}, secret_key)
            yield valid_token.token

            # Invalid token
            yield "invalid.token.here"

        results = []
        async for token, is_valid, error in service.jwt_validation_stream(
            token_stream(), secret_key
        ):
            results.append((token, is_valid, error))

        assert len(results) == 2
        assert results[0][1] is True  # First token should be valid
        assert results[1][1] is False  # Second token should be invalid

    @pytest.mark.asyncio
    async def test_caching(self, service):
        """Test caching functionality."""
        data = "test data"

        # Hash same data multiple times
        hash1 = await service.hash_async(data)
        hash2 = await service.hash_async(data)

        health = await service.get_health_status()
        # Should have cache hits
        assert health["cache"]["hits"] > 0


class TestReactiveAuthorizationCosmosRepository:
    """Test suite for ReactiveAuthorizationCosmosRepository (using mock implementation)."""

    @pytest.fixture
    async def repository(self):
        """Create repository instance for testing."""
        repo = MockReactiveAuthorizationCosmosRepository(
            max_concurrent_operations=10, enable_caching=True
        )
        yield repo
        await repo.shutdown()

    @pytest.mark.asyncio
    async def test_save_async(self, repository):
        """Test async save operation."""
        entity = MockModel("1", "test data")
        saved = await repository.save_async(entity)

        assert saved == entity

        health = await repository.get_health_status()
        assert health["metrics"]["operation_counts"]["save"] == 1

    @pytest.mark.asyncio
    async def test_find_by_id_async(self, repository):
        """Test async find by ID operation."""
        entity = MockModel("1", "test data")
        await repository.save_async(entity)

        found = await repository.find_by_id_async("1")
        assert found == entity

    @pytest.mark.asyncio
    async def test_find_all_async(self, repository):
        """Test async find all operation."""
        entities = [MockModel("1", "data1"), MockModel("2", "data2")]

        for entity in entities:
            await repository.save_async(entity)

        found_entities = []
        async for entity in repository.find_all_async():
            found_entities.append(entity)

        assert len(found_entities) == 2

    @pytest.mark.asyncio
    async def test_delete_async(self, repository):
        """Test async delete operation."""
        entity = MockModel("1", "test data")
        await repository.save_async(entity)

        await repository.delete_async(entity)

        found = await repository.find_by_id_async("1")
        assert found is None

    @pytest.mark.asyncio
    async def test_filter_async(self, repository):
        """Test async filter operation."""
        entities = [
            MockModel("1", "data1"),
            MockModel("2", "data1"),  # Same data
            MockModel("3", "data2"),
        ]

        for entity in entities:
            await repository.save_async(entity)

        filtered = []
        async for entity in repository.filter_async({"data": "data1"}):
            filtered.append(entity)

        assert len(filtered) == 2

    @pytest.mark.asyncio
    async def test_batch_save_async(self, repository):
        """Test async batch save operation."""
        entities = [MockModel("1", "data1"), MockModel("2", "data2")]

        saved_entities = []
        async for entity in repository.save_all_async(entities):
            saved_entities.append(entity)

        assert len(saved_entities) == 2

    @pytest.mark.asyncio
    async def test_caching(self, repository):
        """Test caching functionality."""
        entity = MockModel("1", "test data")
        await repository.save_async(entity)

        # First read should miss cache
        found1 = await repository.find_by_id_async("1")

        # Second read should hit cache
        found2 = await repository.find_by_id_async("1")

        assert found1 == found2

        health = await repository.get_health_status()
        assert health["cache"]["hits"] > 0


class TestReactiveIntegrationService:
    """Test suite for ReactiveIntegrationService."""

    @pytest.fixture
    async def integration_service(self):
        """Create integration service for testing."""
        config = ServiceConfiguration(
            max_concurrent_operations=10,
            enable_detailed_metrics=True,
            request_timeout=5.0,
        )

        service = ReactiveIntegrationService(config=config)

        # Set up mock repositories
        cosmos_repo = MockReactiveAuthorizationCosmosRepository()
        service.set_cosmos_repository(cosmos_repo)

        yield service
        await service.shutdown()

    @pytest.mark.asyncio
    async def test_authentication_and_authorization(self, integration_service):
        """Test authentication and authorization flow."""
        secret_key = await integration_service._secret_util.generate_secret_key_async()

        # Generate a service token
        service_token = await integration_service.generate_service_token_async(
            service_name="test_service",
            permissions=["read", "write"],
            secret_key=secret_key,
        )

        # Authenticate and authorize
        payload, auth_context = (
            await integration_service.authenticate_and_authorize_async(
                token=service_token.token,
                secret_key=secret_key,
                required_permissions=["read"],
            )
        )

        assert payload["service_name"] == "test_service"
        assert "read" in payload["permissions"]

    @pytest.mark.asyncio
    async def test_secure_data_operations(self, integration_service):
        """Test secure data operations."""
        # Create an entity
        entity = MockModel("1", "test data")

        # Save entity
        saved = await integration_service.secure_data_operation_async(
            operation="create", entity=entity, use_cosmos=True
        )

        assert saved == entity

        # Read entity
        found = await integration_service.secure_data_operation_async(
            operation="read", entity_id="1", use_cosmos=True
        )

        assert found == entity

    @pytest.mark.asyncio
    async def test_batch_operations(self, integration_service):
        """Test batch secure operations."""
        operations = [
            {
                "operation": "create",
                "entity": MockModel("1", "data1"),
                "use_cosmos": True,
            },
            {
                "operation": "create",
                "entity": MockModel("2", "data2"),
                "use_cosmos": True,
            },
        ]

        results = await integration_service.batch_secure_operations_async(operations)

        assert len(results) == 2
        assert all(success for success, _, _ in results)

    @pytest.mark.asyncio
    async def test_token_refresh(self, integration_service):
        """Test token refresh functionality."""
        secret_key = await integration_service._secret_util.generate_secret_key_async()

        # Generate initial token with short expiry
        original_token = await integration_service._secret_util.generate_jwt_async(
            payload={"user_id": "123"}, secret_key=secret_key, expiry_seconds=1
        )

        # Refresh token
        new_token = await integration_service.refresh_token_async(
            expired_token=original_token.token, secret_key=secret_key
        )

        assert new_token.token != original_token.token
        assert new_token.payload["user_id"] == "123"

    @pytest.mark.asyncio
    async def test_comprehensive_health_status(self, integration_service):
        """Test comprehensive health status."""
        health = await integration_service.get_comprehensive_health_status()

        assert "status" in health
        assert "service_health" in health
        assert "integration_circuit_breaker" in health
        assert "repositories" in health
        assert health["repositories"]["cosmos_configured"] is True

    @pytest.mark.asyncio
    async def test_integration_metrics_stream(self, integration_service):
        """Test integration metrics streaming."""
        metrics_received = []

        async def collect_metrics():
            count = 0
            async for metrics in integration_service.get_integration_metrics_stream():
                metrics_received.append(metrics)
                count += 1
                if count >= 2:
                    break

        # Start collecting metrics
        collect_task = asyncio.create_task(collect_metrics())

        # Perform some operations to generate metrics
        await asyncio.sleep(0.1)

        secret_key = await integration_service._secret_util.generate_secret_key_async()
        await integration_service.generate_service_token_async(
            service_name="test", permissions=["read"], secret_key=secret_key
        )

        # Wait for metrics collection
        await collect_task

        assert len(metrics_received) == 2
        assert "timestamp" in metrics_received[0]

    @pytest.mark.asyncio
    async def test_circuit_breaker_reset(self, integration_service):
        """Test circuit breaker reset functionality."""
        await integration_service.reset_all_circuit_breakers()

        health = await integration_service.get_comprehensive_health_status()
        assert health["integration_circuit_breaker"]["state"] == "CLOSED"

    @pytest.mark.asyncio
    async def test_cache_clearing(self, integration_service):
        """Test cache clearing functionality."""
        # Perform some cached operations first
        secret_key = await integration_service._secret_util.generate_secret_key_async()
        await integration_service._secret_util.hash_async("test data")

        # Clear all caches
        await integration_service.clear_all_caches()

        # Should still work after cache clearing
        hash_result = await integration_service._secret_util.hash_async("test data")
        assert isinstance(hash_result, str)


# Run tests
if __name__ == "__main__":
    # Example of running a single test
    async def run_single_test():
        service = ReactiveApplicationInsightsService()
        try:
            await service.track_event_async("test_event", {"key": "value"})
            health = await service.get_health_status()
            print(f"Test passed. Health: {health}")
        finally:
            await service.shutdown()

    asyncio.run(run_single_test())
