"""Redis Integration Tests for SignalBridgeActor.

Uses fakeredis to provide a mock Redis server for testing.
This tests the full signal flow from Redis to Nautilus.
"""

import asyncio
import json
import pytest
from unittest.mock import Mock, patch, PropertyMock
from datetime import datetime


class TestRedisConnection:
    """Test Redis connection and basic operations."""
    
    def test_fakeredis_available(self):
        """Test that fakeredis is available and working."""
        import fakeredis
        
        # Create a fake Redis server
        server = fakeredis.FakeServer()
        r = fakeredis.FakeStrictRedis(server=server)
        
        # Test basic operations
        r.set('test_key', 'test_value')
        value = r.get('test_key')
        
        assert value.decode() == 'test_value'
    
    def test_fakeredis_streams(self):
        """Test that fakeredis supports Redis Streams."""
        import fakeredis
        
        server = fakeredis.FakeServer()
        r = fakeredis.FakeStrictRedis(server=server)
        
        # Add entry to stream
        r.xadd('test_stream', {'data': 'value1'})
        r.xadd('test_stream', {'data': 'value2'})
        
        # Read from stream
        messages = r.xread({'test_stream': '0'}, count=10)
        
        assert len(messages) == 1
        stream_name, entries = messages[0]
        assert len(entries) == 2


class TestSignalBridgeWithRedis:
    """Test SignalBridgeActor with Redis integration."""
    
    @pytest.fixture
    def redis_setup(self):
        """Set up fake Redis server and SignalBridgeActor."""
        import fakeredis
        from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeActor, SignalBridgeConfig
        from nautilus_trader.common.component import TestClock
        
        # Create fake Redis server
        server = fakeredis.FakeServer()
        fake_redis = fakeredis.FakeStrictRedis(server=server)
        
        # Create SignalBridgeActor with mocked Redis
        config = SignalBridgeConfig(
            redis_url='redis://localhost:6379',
            stream_key='dolphin:signals:stream',
            max_signal_age_sec=60
        )
        actor = SignalBridgeActor(config)
        
        # Mock the clock
        clock = TestClock()
        clock.set_time(int(datetime.now().timestamp() * 1e9))
        
        with patch.object(type(actor), 'clock', new_callable=PropertyMock) as mock_clock:
            mock_clock.return_value = clock
            
            # Replace Redis connection with fake
            actor._redis = fake_redis
            
            yield actor, fake_redis, clock
    
    @pytest.mark.asyncio
    async def test_signal_bridge_consumes_signal(self, redis_setup):
        """Test that SignalBridgeActor consumes signals from Redis."""
        actor, fake_redis, clock = redis_setup
        
        # Create a valid signal
        signal = {
            'timestamp': int(clock.timestamp_ns() / 1e9),  # seconds
            'asset': 'BTCUSDT',
            'direction': 'SHORT',
            'vel_div': -0.025,
            'strength': 0.75,
            'irp_alignment': 0.5,
            'direction_confirm': True,
            'lookback_momentum': 0.0001
        }
        
        # Add signal to Redis stream
        fake_redis.xadd(
            'dolphin:signals:stream',
            {'signal': json.dumps(signal)}
        )
        
        # Manually call _consume_stream (simulated)
        # Read from stream
        messages = fake_redis.xread({'dolphin:signals:stream': '0'}, count=10)
        
        assert len(messages) == 1
        stream_name, entries = messages[0]
        assert len(entries) == 1
    
    @pytest.mark.asyncio
    async def test_signal_bridge_validates_signal(self, redis_setup):
        """Test signal validation in SignalBridgeActor."""
        actor, fake_redis, clock = redis_setup
        
        # Create a valid signal
        valid_signal = {
            'timestamp': int(clock.timestamp_ns() / 1e9),
            'asset': 'BTCUSDT',
            'direction': 'SHORT',
            'vel_div': -0.025,
            'strength': 0.75,
            'irp_alignment': 0.5,
            'direction_confirm': True,
            'lookback_momentum': 0.0001
        }
        
        # Test validation
        is_valid = actor._validate_signal(valid_signal)
        assert is_valid is True
        
        # Test invalid signal (missing field)
        invalid_signal = {
            'timestamp': int(clock.timestamp_ns() / 1e9),
            'asset': 'BTCUSDT'
        }
        
        is_valid = actor._validate_signal(invalid_signal)
        assert is_valid is False
    
    @pytest.mark.asyncio
    async def test_signal_bridge_rejects_stale_signal(self, redis_setup):
        """Test that stale signals are rejected."""
        actor, fake_redis, clock = redis_setup
        
        # Create a stale signal (70 seconds old, older than max_signal_age_sec=60)
        stale_signal = {
            'timestamp': int((clock.timestamp_ns() / 1e9) - 70),
            'asset': 'BTCUSDT',
            'direction': 'SHORT',
            'vel_div': -0.025,
            'strength': 0.75,
            'irp_alignment': 0.5,
            'direction_confirm': True,
            'lookback_momentum': 0.0001
        }
        
        is_valid = actor._validate_signal(stale_signal)
        assert is_valid is False


class TestSignalFlow:
    """Test complete signal flow from Redis to strategy."""
    
    @pytest.mark.asyncio
    async def test_full_signal_flow(self):
        """Test complete signal flow: Redis -> SignalBridge -> Strategy."""
        import fakeredis
        from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeActor, SignalBridgeConfig
        from nautilus_dolphin.nautilus.strategy import DolphinExecutionStrategyForTesting
        from nautilus_trader.common.component import TestClock
        
        # Set up fake Redis
        server = fakeredis.FakeServer()
        fake_redis = fakeredis.FakeStrictRedis(server=server)
        
        # Create SignalBridgeActor
        bridge_config = SignalBridgeConfig(
            redis_url='redis://localhost:6379',
            stream_key='dolphin:signals:stream',
            max_signal_age_sec=60
        )
        bridge_actor = SignalBridgeActor(bridge_config)
        bridge_actor._redis = fake_redis
        
        # Create strategy
        strategy_config = {
            'venue': 'BINANCE_FUTURES',
            'acb_enabled': True,
            'max_leverage': 5.0
        }
        strategy = DolphinExecutionStrategyForTesting(strategy_config)
        
        # Set up clock
        clock = TestClock()
        clock.set_time(int(datetime.now().timestamp() * 1e9))
        
        with patch.object(type(bridge_actor), 'clock', new_callable=PropertyMock) as mock_clock:
            mock_clock.return_value = clock
            
            # Create and publish signal to Redis
            signal = {
                'timestamp': int(clock.timestamp_ns() / 1e9),
                'asset': 'BTCUSDT',
                'direction': 'SHORT',
                'vel_div': -0.025,
                'strength': 0.75,
                'irp_alignment': 0.5,
                'direction_confirm': True,
                'lookback_momentum': 0.0001,
                'price': 50000.0
            }
            
            fake_redis.xadd(
                'dolphin:signals:stream',
                {'signal': json.dumps(signal)}
            )
            
            # Verify signal is in Redis
            messages = fake_redis.xread({'dolphin:signals:stream': '0'}, count=10)
            assert len(messages) == 1
            
            # Verify strategy would process it (filters)
            can_trade = strategy._should_trade(signal)
            assert can_trade == ""  # Empty string means can trade
    
    @pytest.mark.asyncio
    async def test_multiple_signals_processing(self):
        """Test processing multiple signals from Redis."""
        import fakeredis
        from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeActor, SignalBridgeConfig
        from nautilus_trader.common.component import TestClock
        
        # Set up fake Redis
        server = fakeredis.FakeServer()
        fake_redis = fakeredis.FakeStrictRedis(server=server)
        
        # Create SignalBridgeActor
        bridge_config = SignalBridgeConfig(
            redis_url='redis://localhost:6379',
            stream_key='dolphin:signals:stream',
            max_signal_age_sec=60
        )
        bridge_actor = SignalBridgeActor(bridge_config)
        bridge_actor._redis = fake_redis
        
        clock = TestClock()
        clock.set_time(int(datetime.now().timestamp() * 1e9))
        
        with patch.object(type(bridge_actor), 'clock', new_callable=PropertyMock) as mock_clock:
            mock_clock.return_value = clock
            
            # Publish multiple signals
            assets = ['BTCUSDT', 'ETHUSDT', 'ADAUSDT']
            for i, asset in enumerate(assets):
                signal = {
                    'timestamp': int(clock.timestamp_ns() / 1e9),
                    'asset': asset,
                    'direction': 'SHORT',
                    'vel_div': -0.025 - (i * 0.01),
                    'strength': 0.75,
                    'irp_alignment': 0.5,
                    'direction_confirm': True,
                    'lookback_momentum': 0.0001,
                    'price': 50000.0 - (i * 1000)
                }
                fake_redis.xadd(
                    'dolphin:signals:stream',
                    {'signal': json.dumps(signal)}
                )
            
            # Verify all signals are in Redis
            messages = fake_redis.xread({'dolphin:signals:stream': '0'}, count=10)
            assert len(messages) == 1
            stream_name, entries = messages[0]
            assert len(entries) == 3


class TestRedisConnectionConfig:
    """Test Redis connection configuration."""
    
    def test_signal_bridge_config_defaults(self):
        """Test SignalBridgeConfig default values."""
        from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeConfig
        
        config = SignalBridgeConfig()
        
        assert config.redis_url == "redis://localhost:6379"
        assert config.stream_key == "dolphin:signals:stream"
        assert config.max_signal_age_sec == 10
    
    def test_signal_bridge_config_custom(self):
        """Test SignalBridgeConfig custom values."""
        from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeConfig
        
        config = SignalBridgeConfig(
            redis_url='redis://custom:6380',
            stream_key='custom:stream',
            max_signal_age_sec=30
        )
        
        assert config.redis_url == "redis://custom:6380"
        assert config.stream_key == "custom:stream"
        assert config.max_signal_age_sec == 30
    
    def test_config_yaml_matches(self):
        """Test that config.yaml matches SignalBridgeConfig."""
        import yaml
        from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeConfig
        
        # Load config.yaml
        with open('config/config.yaml', 'r') as f:
            config = yaml.safe_load(f)
        
        signal_bridge_config = config.get('signal_bridge', {})
        
        # Verify keys match
        assert 'redis_url' in signal_bridge_config
        assert 'stream_key' in signal_bridge_config
        assert 'max_signal_age_sec' in signal_bridge_config