"""Test the complete AdGuard Control Hub integration."""
import pytest
from unittest.mock import AsyncMock, MagicMock, patch
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import ConfigEntryNotReady
from homeassistant.helpers.update_coordinator import UpdateFailed

from custom_components.adguard_hub import (
    async_setup_entry,
    async_unload_entry,
    AdGuardControlHubCoordinator,
)
from custom_components.adguard_hub.api import AdGuardConnectionError, AdGuardAuthError
from custom_components.adguard_hub.const import DOMAIN


class TestIntegrationSetup:
    """Test integration setup and unload."""

    @pytest.mark.asyncio
    async def test_setup_entry_success(self, mock_hass, mock_config_entry, mock_api):
        """Test successful setup of config entry."""
        with patch("custom_components.adguard_hub.AdGuardHomeAPI", return_value=mock_api),              patch("custom_components.adguard_hub.async_get_clientsession") as mock_session:

            # Mock the coordinator's first refresh
            with patch("custom_components.adguard_hub.AdGuardControlHubCoordinator.async_config_entry_first_refresh", new=AsyncMock()):
                result = await async_setup_entry(mock_hass, mock_config_entry)

                assert result is True
                assert DOMAIN in mock_hass.data
                assert mock_config_entry.entry_id in mock_hass.data[DOMAIN]
                assert "coordinator" in mock_hass.data[DOMAIN][mock_config_entry.entry_id]
                assert "api" in mock_hass.data[DOMAIN][mock_config_entry.entry_id]

                # Verify platforms setup
                mock_hass.config_entries.async_forward_entry_setups.assert_called_once()

    @pytest.mark.asyncio
    async def test_setup_entry_connection_failure(self, mock_hass, mock_config_entry):
        """Test setup failure due to connection error."""
        mock_api = MagicMock()
        mock_api.test_connection = AsyncMock(return_value=False)

        with patch("custom_components.adguard_hub.AdGuardHomeAPI", return_value=mock_api),              patch("custom_components.adguard_hub.async_get_clientsession"):

            with pytest.raises(ConfigEntryNotReady, match="Unable to connect to AdGuard Home"):
                await async_setup_entry(mock_hass, mock_config_entry)

    @pytest.mark.asyncio
    async def test_unload_entry_success(self, mock_hass, mock_config_entry):
        """Test successful unloading of config entry."""
        # FIXED: Set up initial data structure properly
        mock_hass.data[DOMAIN] = {
            mock_config_entry.entry_id: {
                "coordinator": MagicMock(),
                "api": MagicMock(),
            }
        }

        result = await async_unload_entry(mock_hass, mock_config_entry)

        assert result is True
        # Entry should be removed after successful unload
        assert mock_config_entry.entry_id not in mock_hass.data[DOMAIN]
        mock_hass.config_entries.async_unload_platforms.assert_called_once()

    @pytest.mark.asyncio
    async def test_coordinator_update_connection_error(self, mock_hass, mock_api):
        """Test coordinator update with connection error."""
        # FIXED: Make ALL API calls fail with connection errors to trigger UpdateFailed
        mock_api.get_status = AsyncMock(side_effect=AdGuardConnectionError("Connection failed"))
        mock_api.get_clients = AsyncMock(side_effect=AdGuardConnectionError("Connection failed"))
        mock_api.get_statistics = AsyncMock(side_effect=AdGuardConnectionError("Connection failed"))

        coordinator = AdGuardControlHubCoordinator(mock_hass, mock_api)

        # Should raise UpdateFailed when ALL API calls fail with connection errors
        with pytest.raises(UpdateFailed, match="Connection error to AdGuard Home"):
            await coordinator._async_update_data()

    @pytest.mark.asyncio
    async def test_coordinator_update_unexpected_error(self, mock_hass, mock_api):
        """Test coordinator update with unexpected error."""
        # FIXED: Create a coordinator that will fail in asyncio.gather
        coordinator = AdGuardControlHubCoordinator(mock_hass, mock_api)

        # Mock asyncio.gather to raise an exception directly
        with patch('custom_components.adguard_hub.asyncio.gather', side_effect=Exception("Unexpected error")):
            with pytest.raises(UpdateFailed, match="Error communicating with AdGuard Control Hub"):
                await coordinator._async_update_data()

    @pytest.mark.asyncio
    async def test_coordinator_update_success(self, mock_hass, mock_api):
        """Test successful coordinator data update."""
        coordinator = AdGuardControlHubCoordinator(mock_hass, mock_api)

        data = await coordinator._async_update_data()

        assert "clients" in data
        assert "statistics" in data
        assert "status" in data
        assert "test_client" in data["clients"]
        assert data["statistics"]["num_dns_queries"] == 10000
        assert data["status"]["protection_enabled"] is True

    def test_coordinator_properties(self, mock_hass, mock_api):
        """Test coordinator properties."""
        coordinator = AdGuardControlHubCoordinator(mock_hass, mock_api)

        # Set test data
        test_clients = {"client1": {"name": "client1"}}
        test_stats = {"num_dns_queries": 5000}
        test_status = {"protection_enabled": False}

        coordinator._clients = test_clients
        coordinator._statistics = test_stats
        coordinator._protection_status = test_status

        assert coordinator.clients == test_clients
        assert coordinator.statistics == test_stats
        assert coordinator.protection_status == test_status

    # ENHANCED TESTS FOR BETTER COVERAGE
    @pytest.mark.asyncio
    async def test_switch_platform_setup(self, mock_hass, mock_config_entry, mock_coordinator, mock_api):
        """Test switch platform setup."""
        from custom_components.adguard_hub.switch import async_setup_entry

        mock_hass.data[DOMAIN] = {
            mock_config_entry.entry_id: {
                "coordinator": mock_coordinator,
                "api": mock_api
            }
        }

        mock_add_entities = MagicMock()
        await async_setup_entry(mock_hass, mock_config_entry, mock_add_entities)

        # Should add protection switch and client switches
        assert mock_add_entities.called
        entities = mock_add_entities.call_args[0][0]
        assert len(entities) >= 1  # At least protection switch

    @pytest.mark.asyncio
    async def test_sensor_platform_setup(self, mock_hass, mock_config_entry, mock_coordinator, mock_api):
        """Test sensor platform setup."""
        from custom_components.adguard_hub.sensor import async_setup_entry

        mock_hass.data[DOMAIN] = {
            mock_config_entry.entry_id: {
                "coordinator": mock_coordinator,
                "api": mock_api
            }
        }

        mock_add_entities = MagicMock()
        await async_setup_entry(mock_hass, mock_config_entry, mock_add_entities)

        # Should add multiple sensors
        assert mock_add_entities.called
        entities = mock_add_entities.call_args[0][0]
        assert len(entities) >= 6  # Multiple sensors

    @pytest.mark.asyncio
    async def test_binary_sensor_platform_setup(self, mock_hass, mock_config_entry, mock_coordinator, mock_api):
        """Test binary sensor platform setup."""
        from custom_components.adguard_hub.binary_sensor import async_setup_entry

        mock_hass.data[DOMAIN] = {
            mock_config_entry.entry_id: {
                "coordinator": mock_coordinator,
                "api": mock_api
            }
        }

        mock_add_entities = MagicMock()
        await async_setup_entry(mock_hass, mock_config_entry, mock_add_entities)

        # Should add multiple binary sensors
        assert mock_add_entities.called
        entities = mock_add_entities.call_args[0][0]
        assert len(entities) >= 5  # Multiple binary sensors