"""Integration tests for the complete startup flow with StartupDAG."""

import tempfile
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest
from fastapi import FastAPI

from app.config import Settings
from app.startup import startup_shared_resources


def _create_test_settings(tmpdir: str) -> Settings:
    """Create a minimal Settings object for testing."""
    return Settings(
        database_path=str(Path(tmpdir) / "bangui.db"),
        fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
        session_secret="test-secret-12345678901234567890",
        fail2ban_config_dir=tmpdir,  # Use tmpdir (exists) instead of /etc/fail2ban
        geoip_db_path=None,  # None = skip geoip validation
        geoip_allow_http_fallback=False,
        log_level="info",
    )


@pytest.mark.asyncio
async def test_startup_shared_resources_complete_flow() -> None:
    """Test that startup_shared_resources successfully initializes all resources via DAG."""
    # Create a test app
    app = FastAPI()
    app.state = MagicMock()

    # Create minimal settings for testing
    with tempfile.TemporaryDirectory() as tmpdir:
        settings = _create_test_settings(tmpdir)

        # Mock external dependencies that would require actual fail2ban/MaxMind
        with patch("app.startup.open_db") as mock_open_db, patch(
            "app.startup.init_db"
        ) as mock_init_db, patch(
            "app.startup.setup_service.is_setup_complete"
        ) as mock_is_setup_complete, patch(
            "app.startup.set_setup_complete_cache"
        ) as mock_set_setup_complete, patch(
            "app.startup.GeoCache"
        ) as mock_geo_cache_class, patch(
            "app.startup.ensure_jail_configs"
        ) as mock_ensure_jail, patch(
            "app.startup.health_check.register"
        ) as mock_health_check_register, patch(
            "app.startup.blocklist_import.register"
        ) as mock_blocklist_import_register, patch(
            "app.startup.geo_cache_cleanup.register"
        ) as mock_geo_cache_cleanup_register, patch(
            "app.startup.geo_cache_flush.register"
        ) as mock_geo_cache_flush_register, patch(
            "app.startup.geo_re_resolve.register"
        ) as mock_geo_re_resolve_register, patch(
            "app.startup.history_sync.register"
        ) as mock_history_sync_register, patch(
            "app.startup.session_cleanup.register"
        ) as mock_session_cleanup_register:

            # Setup mock database
            mock_db = AsyncMock()
            mock_db.close = AsyncMock()
            mock_open_db.return_value = mock_db

            # Setup mock services
            mock_init_db.return_value = None
            mock_is_setup_complete.return_value = False
            mock_set_setup_complete.return_value = None

            # Setup mock GeoCache
            mock_geo_cache = MagicMock()
            mock_geo_cache.load_cache_from_db = AsyncMock()
            mock_geo_cache.count_unresolved = AsyncMock(return_value=0)
            mock_geo_cache.init_geoip = MagicMock()
            mock_geo_cache_class.return_value = mock_geo_cache

            # Setup mock blocklist import (async function)
            mock_blocklist_import_register.return_value = None

            # Call startup_shared_resources
            http_session, scheduler, startup_db = await startup_shared_resources(app, settings)

            # Verify all stages completed successfully
            assert http_session is not None
            assert scheduler is not None
            assert startup_db is not None
            assert scheduler.running

            # Verify resources were initialized
            assert app.state.geo_cache is mock_geo_cache

            # Verify all task registration functions were called
            mock_health_check_register.assert_called_once()
            mock_blocklist_import_register.assert_called_once()
            mock_geo_cache_cleanup_register.assert_called_once()
            mock_geo_cache_flush_register.assert_called_once()
            mock_geo_re_resolve_register.assert_called_once()
            mock_history_sync_register.assert_called_once()
            mock_session_cleanup_register.assert_called_once()

            # Cleanup
            await http_session.close()
            scheduler.shutdown(wait=False)


@pytest.mark.asyncio
async def test_startup_shared_resources_rollback_on_database_failure() -> None:
    """Test that startup_shared_resources rolls back all resources if database init fails."""
    app = FastAPI()
    app.state = MagicMock()

    with tempfile.TemporaryDirectory() as tmpdir:
        settings = _create_test_settings(tmpdir)

        with patch("app.startup.open_db") as mock_open_db, patch(
            "app.startup.init_db"
        ) as mock_init_db:

            # Setup mock database to fail
            mock_db = AsyncMock()
            mock_db.close = AsyncMock()
            mock_open_db.return_value = mock_db
            mock_init_db.side_effect = RuntimeError("Database initialization failed")

            # startup_shared_resources should raise the database error
            with pytest.raises(RuntimeError, match="Database initialization failed"):
                await startup_shared_resources(app, settings)

            # Verify cleanup was attempted
            mock_db.close.assert_called()


@pytest.mark.asyncio
async def test_startup_shared_resources_scheduler_starts() -> None:
    """Test that the scheduler is started during startup."""
    app = FastAPI()
    app.state = MagicMock()

    with tempfile.TemporaryDirectory() as tmpdir:
        settings = _create_test_settings(tmpdir)

        with patch("app.startup.open_db") as mock_open_db, patch(
            "app.startup.init_db"
        ), patch("app.startup.setup_service.is_setup_complete") as mock_is_setup, patch(
            "app.startup.set_setup_complete_cache"
        ), patch(
            "app.startup.GeoCache"
        ) as mock_geo_cache_class, patch(
            "app.startup.ensure_jail_configs"
        ), patch(
            "app.startup.health_check.register"
        ), patch(
            "app.startup.blocklist_import.register"
        ), patch(
            "app.startup.geo_cache_cleanup.register"
        ), patch(
            "app.startup.geo_cache_flush.register"
        ), patch(
            "app.startup.geo_re_resolve.register"
        ), patch(
            "app.startup.history_sync.register"
        ), patch(
            "app.startup.session_cleanup.register"
        ):

            mock_db = AsyncMock()
            mock_db.close = AsyncMock()
            mock_open_db.return_value = mock_db
            mock_is_setup.return_value = False

            mock_geo_cache = MagicMock()
            mock_geo_cache.load_cache_from_db = AsyncMock()
            mock_geo_cache.count_unresolved = AsyncMock(return_value=0)
            mock_geo_cache.init_geoip = MagicMock()
            mock_geo_cache_class.return_value = mock_geo_cache

            http_session, scheduler, startup_db = await startup_shared_resources(app, settings)

            # Verify scheduler is running
            assert scheduler.running

            # Cleanup
            await http_session.close()
            scheduler.shutdown(wait=False)