"""Tests for SignalBridgeActor.

Uses TestClock pattern from Nautilus to properly initialize Actor components.
"""

import pytest
from unittest.mock import Mock, patch, PropertyMock

from nautilus_dolphin.nautilus.signal_bridge import SignalBridgeActor, SignalBridgeConfig


class TestSignalBridgeTimestampParsing:
    """Test timestamp parsing without full Nautilus initialization."""
    
    def test_parse_timestamp_ns_from_seconds(self):
        """Test timestamp conversion from seconds."""
        config = SignalBridgeConfig(redis_url='redis://localhost')
        actor = SignalBridgeActor(config)
        
        ts_sec = 1234567890
        ts_ns = actor._parse_timestamp_ns(ts_sec)
        
        assert ts_ns == 1234567890 * 1_000_000_000
        
    def test_parse_timestamp_ns_from_milliseconds(self):
        """Test timestamp conversion from milliseconds."""
        config = SignalBridgeConfig(redis_url='redis://localhost')
        actor = SignalBridgeActor(config)
        
        ts_ms = 1234567890123
        ts_ns = actor._parse_timestamp_ns(ts_ms)
        
        assert ts_ns == 1234567890123 * 1_000
        
    def test_parse_timestamp_ns_from_nanoseconds(self):
        """Test timestamp already in nanoseconds."""
        config = SignalBridgeConfig(redis_url='redis://localhost')
        actor = SignalBridgeActor(config)
        
        ts_ns = 1234567890123456789
        result = actor._parse_timestamp_ns(ts_ns)
        
        assert result == ts_ns


class TestSignalBridgeWithNautilus:
    """Test SignalBridgeActor with proper Nautilus initialization."""
    
    @pytest.fixture
    def nautilus_actor(self):
        """Create a properly initialized SignalBridgeActor with mocked clock."""
        from nautilus_trader.common.component import TestClock
        
        config = SignalBridgeConfig(
            redis_url='redis://localhost',
            max_signal_age_sec=10
        )
        actor = SignalBridgeActor(config)
        
        # Create TestClock and patch the clock property
        clock = TestClock()
        
        # Use patch to mock the clock property
        with patch.object(
            type(actor), 
            'clock', 
            new_callable=PropertyMock
        ) as mock_clock:
            mock_clock.return_value = clock
            yield actor, clock
    
    def test_validate_signal_missing_fields(self, nautilus_actor):
        """Test signal validation rejects missing fields."""
        actor, clock = nautilus_actor
        
        signal = {'timestamp': 1234567890, 'asset': 'BTCUSDT'}
        
        assert not actor._validate_signal(signal)
        
    def test_validate_signal_valid(self, nautilus_actor):
        """Test signal validation accepts valid signal."""
        actor, clock = nautilus_actor
        
        # Set clock to be after signal timestamp
        clock.set_time(1234567890 * 1_000_000_000 + 5_000_000_000)
        
        signal = {
            'timestamp': 1234567890,
            'asset': 'BTCUSDT',
            'direction': 'SHORT',
            'vel_div': -0.025,
            'strength': 0.75
        }
        
        assert actor._validate_signal(signal)
    
    def test_validate_signal_stale(self, nautilus_actor):
        """Test signal validation rejects stale signals."""
        actor, clock = nautilus_actor
        
        # Set clock to be much later than signal (older than max_signal_age_sec)
        clock.set_time(1234567890 * 1_000_000_000 + 20_000_000_000)  # 20s later
        
        signal = {
            'timestamp': 1234567890,
            'asset': 'BTCUSDT',
            'direction': 'SHORT',
            'vel_div': -0.025,
            'strength': 0.75
        }
        
        assert not actor._validate_signal(signal)
    
    def test_validate_signal_future(self, nautilus_actor):
        """Test signal validation rejects future signals."""
        actor, clock = nautilus_actor
        
        # Set clock to be before signal timestamp
        clock.set_time(1234567890 * 1_000_000_000 - 1_000_000_000)
        
        signal = {
            'timestamp': 1234567890,
            'asset': 'BTCUSDT',
            'direction': 'SHORT',
            'vel_div': -0.025,
            'strength': 0.75
        }
        
        assert not actor._validate_signal(signal)


class TestSignalBridgeConfig:
    """Test SignalBridgeConfig initialization."""
    
    def test_default_config(self):
        """Test default configuration values."""
        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_custom_config(self):
        """Test custom configuration values."""
        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