"""
Tests for Intercept Agent components.

Tests cover:
- AgentConfig parsing
- AgentClient HTTP operations
- Database agent CRUD operations
- GPS integration
"""

import json
import os
import sys
import tempfile
from unittest.mock import Mock, patch

import pytest

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from utils.agent_client import AgentClient, AgentConnectionError, AgentHTTPError, create_client_from_agent
from utils.database import (
    create_agent,
    delete_agent,
    get_agent,
    get_agent_by_name,
    get_recent_payloads,
    init_db,
    list_agents,
    store_push_payload,
    update_agent,
)

# =============================================================================
# AgentConfig Tests
# =============================================================================


class TestAgentConfig:
    """Tests for AgentConfig class."""

    def test_default_values(self):
        """AgentConfig should have sensible defaults."""
        from intercept_agent import AgentConfig

        config = AgentConfig()

        assert config.port == 8020
        assert config.allow_cors is False
        assert config.push_enabled is False
        assert config.push_interval == 5
        assert config.controller_url == ""
        assert "adsb" in config.modes_enabled
        assert "wifi" in config.modes_enabled
        assert config.modes_enabled["adsb"] is True

    def test_load_from_file_valid(self):
        """AgentConfig should load from valid INI file."""
        from intercept_agent import AgentConfig

        config_content = """
[agent]
name = test-sensor
port = 8025
allowed_ips = 192.168.1.0/24, 10.0.0.1
allow_cors = true

[controller]
url = http://192.168.1.100:5050
api_key = secret123
push_enabled = true
push_interval = 10

[modes]
pager = false
adsb = true
wifi = true
bluetooth = false
"""
        with tempfile.NamedTemporaryFile(mode="w", suffix=".cfg", delete=False) as f:
            f.write(config_content)
            config_path = f.name

        try:
            config = AgentConfig()
            result = config.load_from_file(config_path)

            assert result is True
            assert config.name == "test-sensor"
            assert config.port == 8025
            assert "192.168.1.0/24" in config.allowed_ips
            assert config.allow_cors is True
            assert config.controller_url == "http://192.168.1.100:5050"
            assert config.controller_api_key == "secret123"
            assert config.push_enabled is True
            assert config.push_interval == 10
            assert config.modes_enabled["pager"] is False
            assert config.modes_enabled["adsb"] is True
            assert config.modes_enabled["bluetooth"] is False
        finally:
            os.unlink(config_path)

    def test_load_from_file_missing(self):
        """AgentConfig should handle missing file gracefully."""
        from intercept_agent import AgentConfig

        config = AgentConfig()
        result = config.load_from_file("/nonexistent/path.cfg")
        assert result is False

    def test_to_dict(self):
        """AgentConfig should convert to dictionary."""
        from intercept_agent import AgentConfig

        config = AgentConfig()
        config.name = "test"
        config.port = 9000

        d = config.to_dict()

        assert d["name"] == "test"
        assert d["port"] == 9000
        assert "modes_enabled" in d
        assert isinstance(d["modes_enabled"], dict)


# =============================================================================
# AgentClient Tests
# =============================================================================


class TestAgentClient:
    """Tests for AgentClient HTTP operations."""

    def test_init(self):
        """AgentClient should initialize correctly."""
        client = AgentClient("http://192.168.1.50:8020", api_key="secret")
        assert client.base_url == "http://192.168.1.50:8020"
        assert client.api_key == "secret"
        assert client.timeout == 60.0

    def test_init_strips_trailing_slash(self):
        """AgentClient should strip trailing slash from URL."""
        client = AgentClient("http://192.168.1.50:8020/")
        assert client.base_url == "http://192.168.1.50:8020"

    def test_headers_without_api_key(self):
        """Headers should not include API key if not provided."""
        client = AgentClient("http://localhost:8020")
        headers = client._headers()
        assert "X-API-Key" not in headers
        assert "Content-Type" in headers

    def test_headers_with_api_key(self):
        """Headers should include API key if provided."""
        client = AgentClient("http://localhost:8020", api_key="test-key")
        headers = client._headers()
        assert headers["X-API-Key"] == "test-key"

    @patch("utils.agent_client.requests.get")
    def test_get_capabilities(self, mock_get):
        """get_capabilities should parse JSON response."""
        mock_response = Mock()
        mock_response.json.return_value = {
            "modes": {"adsb": True, "wifi": True},
            "devices": [{"name": "RTL-SDR"}],
            "agent_version": "1.0.0",
        }
        mock_response.content = b"{}"
        mock_response.raise_for_status = Mock()
        mock_get.return_value = mock_response

        client = AgentClient("http://localhost:8020")
        caps = client.get_capabilities()

        assert caps["modes"]["adsb"] is True
        assert len(caps["devices"]) == 1
        mock_get.assert_called_once()

    @patch("utils.agent_client.requests.get")
    def test_get_status(self, mock_get):
        """get_status should return status dict."""
        mock_response = Mock()
        mock_response.json.return_value = {"running_modes": ["adsb", "sensor"], "uptime": 3600, "push_enabled": True}
        mock_response.content = b"{}"
        mock_response.raise_for_status = Mock()
        mock_get.return_value = mock_response

        client = AgentClient("http://localhost:8020")
        status = client.get_status()

        assert "adsb" in status["running_modes"]
        assert status["uptime"] == 3600

    @patch("utils.agent_client.requests.get")
    def test_health_check_healthy(self, mock_get):
        """health_check should return True for healthy agent."""
        mock_response = Mock()
        mock_response.json.return_value = {"status": "healthy"}
        mock_response.content = b"{}"
        mock_response.raise_for_status = Mock()
        mock_get.return_value = mock_response

        client = AgentClient("http://localhost:8020")
        assert client.health_check() is True

    @patch("utils.agent_client.requests.get")
    def test_health_check_unhealthy(self, mock_get):
        """health_check should return False for connection error."""
        import requests

        mock_get.side_effect = requests.ConnectionError("Connection refused")

        client = AgentClient("http://localhost:8020")
        assert client.health_check() is False

    @patch("utils.agent_client.requests.post")
    def test_start_mode(self, mock_post):
        """start_mode should POST to correct endpoint."""
        mock_response = Mock()
        mock_response.json.return_value = {"status": "started", "mode": "adsb"}
        mock_response.content = b"{}"
        mock_response.raise_for_status = Mock()
        mock_post.return_value = mock_response

        client = AgentClient("http://localhost:8020")
        result = client.start_mode("adsb", {"device_index": 0})

        assert result["status"] == "started"
        mock_post.assert_called_once()
        call_url = mock_post.call_args[0][0]
        assert "/adsb/start" in call_url

    @patch("utils.agent_client.requests.post")
    def test_stop_mode(self, mock_post):
        """stop_mode should POST to stop endpoint."""
        mock_response = Mock()
        mock_response.json.return_value = {"status": "stopped"}
        mock_response.content = b"{}"
        mock_response.raise_for_status = Mock()
        mock_post.return_value = mock_response

        client = AgentClient("http://localhost:8020")
        result = client.stop_mode("wifi")

        assert result["status"] == "stopped"

    @patch("utils.agent_client.requests.get")
    def test_get_mode_data(self, mock_get):
        """get_mode_data should return data snapshot."""
        mock_response = Mock()
        mock_response.json.return_value = {
            "mode": "adsb",
            "data": [{"icao": "ABC123", "altitude": 35000}, {"icao": "DEF456", "altitude": 28000}],
        }
        mock_response.content = b"{}"
        mock_response.raise_for_status = Mock()
        mock_get.return_value = mock_response

        client = AgentClient("http://localhost:8020")
        result = client.get_mode_data("adsb")

        assert len(result["data"]) == 2
        assert result["data"][0]["icao"] == "ABC123"

    @patch("utils.agent_client.requests.get")
    def test_connection_error_handling(self, mock_get):
        """Client should raise AgentConnectionError on connection failure."""
        import requests

        mock_get.side_effect = requests.ConnectionError("Connection refused")

        client = AgentClient("http://localhost:8020")

        with pytest.raises(AgentConnectionError) as exc_info:
            client.get_capabilities()
        assert "Cannot connect" in str(exc_info.value)

    @patch("utils.agent_client.requests.get")
    def test_timeout_error_handling(self, mock_get):
        """Client should raise AgentConnectionError on timeout."""
        import requests

        mock_get.side_effect = requests.Timeout("Request timed out")

        client = AgentClient("http://localhost:8020", timeout=5.0)

        with pytest.raises(AgentConnectionError) as exc_info:
            client.get_status()
        assert "timed out" in str(exc_info.value)

    @patch("utils.agent_client.requests.get")
    def test_http_error_handling(self, mock_get):
        """Client should raise AgentHTTPError on HTTP errors."""
        import requests

        mock_response = Mock()
        mock_response.status_code = 500
        mock_response.raise_for_status.side_effect = requests.HTTPError(response=mock_response)
        mock_get.return_value = mock_response

        client = AgentClient("http://localhost:8020")

        with pytest.raises(AgentHTTPError) as exc_info:
            client.get_capabilities()
        assert exc_info.value.status_code == 500

    def test_create_client_from_agent(self):
        """create_client_from_agent should create configured client."""
        agent = {"id": 1, "name": "test-agent", "base_url": "http://192.168.1.50:8020", "api_key": "secret123"}

        client = create_client_from_agent(agent)

        assert client.base_url == "http://192.168.1.50:8020"
        assert client.api_key == "secret123"


# =============================================================================
# Database Agent CRUD Tests
# =============================================================================


class TestDatabaseAgentCRUD:
    """Tests for database agent operations."""

    @pytest.fixture(autouse=True)
    def setup_db(self, tmp_path):
        """Set up a temporary database for each test."""
        import utils.database as db_module

        # Create temp database
        test_db_path = tmp_path / "test.db"
        original_db_path = db_module.DB_PATH
        db_module.DB_PATH = test_db_path
        db_module.DB_DIR = tmp_path

        # Clear any existing connection
        if hasattr(db_module._local, "connection") and db_module._local.connection:
            db_module._local.connection.close()
            db_module._local.connection = None

        # Initialize schema
        init_db()

        yield

        # Cleanup
        if hasattr(db_module._local, "connection") and db_module._local.connection:
            db_module._local.connection.close()
            db_module._local.connection = None
        db_module.DB_PATH = original_db_path

    def test_create_agent(self):
        """create_agent should insert new agent."""
        agent_id = create_agent(
            name="sensor-1", base_url="http://192.168.1.50:8020", api_key="secret", description="Test sensor node"
        )

        assert agent_id is not None
        assert agent_id > 0

    def test_get_agent(self):
        """get_agent should retrieve agent by ID."""
        agent_id = create_agent(name="sensor-1", base_url="http://192.168.1.50:8020")

        agent = get_agent(agent_id)

        assert agent is not None
        assert agent["name"] == "sensor-1"
        assert agent["base_url"] == "http://192.168.1.50:8020"
        assert agent["is_active"] is True

    def test_get_agent_not_found(self):
        """get_agent should return None for missing agent."""
        agent = get_agent(99999)
        assert agent is None

    def test_get_agent_by_name(self):
        """get_agent_by_name should find agent by name."""
        create_agent(name="unique-sensor", base_url="http://localhost:8020")

        agent = get_agent_by_name("unique-sensor")

        assert agent is not None
        assert agent["name"] == "unique-sensor"

    def test_get_agent_by_name_not_found(self):
        """get_agent_by_name should return None for missing name."""
        agent = get_agent_by_name("nonexistent-sensor")
        assert agent is None

    def test_list_agents(self):
        """list_agents should return all active agents."""
        create_agent(name="sensor-1", base_url="http://192.168.1.51:8020")
        create_agent(name="sensor-2", base_url="http://192.168.1.52:8020")
        create_agent(name="sensor-3", base_url="http://192.168.1.53:8020")

        agents = list_agents()

        assert len(agents) >= 3
        names = [a["name"] for a in agents]
        assert "sensor-1" in names
        assert "sensor-2" in names

    def test_list_agents_active_only(self):
        """list_agents should filter inactive agents by default."""
        agent_id = create_agent(name="inactive-sensor", base_url="http://localhost:8020")
        update_agent(agent_id, is_active=False)

        agents = list_agents(active_only=True)

        names = [a["name"] for a in agents]
        assert "inactive-sensor" not in names

    def test_update_agent(self):
        """update_agent should modify agent fields."""
        agent_id = create_agent(name="sensor-1", base_url="http://localhost:8020")

        result = update_agent(agent_id, base_url="http://192.168.1.100:8020", description="Updated description")

        assert result is True

        agent = get_agent(agent_id)
        assert agent["base_url"] == "http://192.168.1.100:8020"
        assert agent["description"] == "Updated description"

    def test_update_agent_capabilities(self):
        """update_agent should update capabilities JSON."""
        agent_id = create_agent(name="sensor-1", base_url="http://localhost:8020")

        caps = {"adsb": True, "wifi": True, "bluetooth": False}
        update_agent(agent_id, capabilities=caps)

        agent = get_agent(agent_id)
        assert agent["capabilities"]["adsb"] is True
        assert agent["capabilities"]["bluetooth"] is False

    def test_update_agent_gps_coords(self):
        """update_agent should update GPS coordinates."""
        agent_id = create_agent(name="sensor-1", base_url="http://localhost:8020")

        gps = {"lat": 40.7128, "lon": -74.0060, "altitude": 10}
        update_agent(agent_id, gps_coords=gps)

        agent = get_agent(agent_id)
        assert agent["gps_coords"]["lat"] == 40.7128
        assert agent["gps_coords"]["lon"] == -74.0060

    def test_delete_agent(self):
        """delete_agent should remove agent and payloads."""
        agent_id = create_agent(name="to-delete", base_url="http://localhost:8020")

        # Add a payload
        store_push_payload(agent_id, "adsb", {"aircraft": []})

        # Delete
        result = delete_agent(agent_id)

        assert result is True
        assert get_agent(agent_id) is None

    def test_delete_agent_not_found(self):
        """delete_agent should return False for missing agent."""
        result = delete_agent(99999)
        assert result is False


# =============================================================================
# Database Push Payload Tests
# =============================================================================


class TestDatabasePayloads:
    """Tests for push payload storage."""

    @pytest.fixture(autouse=True)
    def setup_db(self, tmp_path):
        """Set up a temporary database for each test."""
        import utils.database as db_module

        test_db_path = tmp_path / "test.db"
        original_db_path = db_module.DB_PATH
        db_module.DB_PATH = test_db_path
        db_module.DB_DIR = tmp_path

        if hasattr(db_module._local, "connection") and db_module._local.connection:
            db_module._local.connection.close()
            db_module._local.connection = None

        init_db()

        yield

        if hasattr(db_module._local, "connection") and db_module._local.connection:
            db_module._local.connection.close()
            db_module._local.connection = None
        db_module.DB_PATH = original_db_path

    def test_store_push_payload(self):
        """store_push_payload should insert payload."""
        agent_id = create_agent(name="sensor-1", base_url="http://localhost:8020")

        payload = {"aircraft": [{"icao": "ABC123", "altitude": 35000}]}
        payload_id = store_push_payload(agent_id, "adsb", payload, "rtlsdr0")

        assert payload_id > 0

    def test_get_recent_payloads(self):
        """get_recent_payloads should return stored payloads."""
        agent_id = create_agent(name="sensor-1", base_url="http://localhost:8020")

        store_push_payload(agent_id, "adsb", {"aircraft": [{"icao": "A"}]})
        store_push_payload(agent_id, "adsb", {"aircraft": [{"icao": "B"}]})
        store_push_payload(agent_id, "wifi", {"networks": []})

        # Get all
        payloads = get_recent_payloads(agent_id=agent_id)
        assert len(payloads) == 3

        # Filter by scan_type
        adsb_payloads = get_recent_payloads(agent_id=agent_id, scan_type="adsb")
        assert len(adsb_payloads) == 2

    def test_get_recent_payloads_includes_agent_name(self):
        """Payloads should include agent name."""
        agent_id = create_agent(name="my-sensor", base_url="http://localhost:8020")
        store_push_payload(agent_id, "sensor", {"temperature": 22.5})

        payloads = get_recent_payloads(agent_id=agent_id)

        assert len(payloads) > 0
        assert payloads[0]["agent_name"] == "my-sensor"

    def test_get_recent_payloads_limit(self):
        """get_recent_payloads should respect limit."""
        agent_id = create_agent(name="sensor-1", base_url="http://localhost:8020")

        for i in range(10):
            store_push_payload(agent_id, "sensor", {"temp": i})

        payloads = get_recent_payloads(agent_id=agent_id, limit=5)
        assert len(payloads) == 5


# =============================================================================
# Integration Tests
# =============================================================================


class TestAgentClientIntegration:
    """Integration tests using mock agent server."""

    @pytest.fixture
    def mock_agent(self):
        """Start mock agent server for testing."""

        from tests.mock_agent import app as mock_app

        # Run mock agent in background
        mock_app.config["TESTING"] = True
        # Using Flask's test client instead of actual server
        return mock_app.test_client()

    def test_mock_agent_capabilities(self, mock_agent):
        """Mock agent should return capabilities."""
        response = mock_agent.get("/capabilities")
        assert response.status_code == 200

        data = json.loads(response.data)
        assert "modes" in data
        assert data["modes"]["adsb"] is True

    def test_mock_agent_start_stop_mode(self, mock_agent):
        """Mock agent should start/stop modes."""
        # Start
        response = mock_agent.post("/adsb/start", json={})
        assert response.status_code == 200
        data = json.loads(response.data)
        assert data["status"] == "started"

        # Check status
        response = mock_agent.get("/status")
        data = json.loads(response.data)
        assert "adsb" in data["running_modes"]

        # Stop
        response = mock_agent.post("/adsb/stop", json={})
        assert response.status_code == 200

    def test_mock_agent_data(self, mock_agent):
        """Mock agent should return data when mode is running."""
        # Start mode first
        mock_agent.post("/adsb/start", json={})

        response = mock_agent.get("/adsb/data")
        assert response.status_code == 200

        data = json.loads(response.data)
        assert "data" in data
        # Data should be a list of aircraft
        assert isinstance(data["data"], list)

        # Cleanup
        mock_agent.post("/adsb/stop", json={})


# =============================================================================
# GPS Manager Tests
# =============================================================================


class TestGPSManager:
    """Tests for GPS integration in agent."""

    def test_gps_manager_init(self):
        """GPSManager should initialize without error."""
        from intercept_agent import GPSManager

        gps = GPSManager()
        assert gps.position is None
        assert gps._running is False

    def test_gps_manager_position_format(self):
        """GPSManager position should have correct format when set."""
        from intercept_agent import GPSManager

        gps = GPSManager()

        # Simulate a position update
        class MockPosition:
            latitude = 40.7128
            longitude = -74.0060
            altitude = 10.5
            speed = 0.0
            heading = 180.0
            fix_quality = 2

        gps._position = MockPosition()
        pos = gps.position

        assert pos is not None
        assert pos["lat"] == 40.7128
        assert pos["lon"] == -74.0060
        assert pos["altitude"] == 10.5