import unittest

from fastapi.testclient import TestClient

from ipython_shell import App, AppInfo
from ipython_mcp.app import app as mcp_app
from ipython_webapp.app import app as web_app
from langchain_demo.ipython_wrapper import get_app_info


class AppInfoTests(unittest.IsolatedAsyncioTestCase):
    def test_app_info_describes_runtime_and_updates_after_execution(self):
        app = App()

        before = app.info()
        self.assertIsInstance(before, AppInfo)
        self.assertEqual(before.shell_count, 0)
        self.assertIsNone(before.last_shell)
        self.assertEqual(before.total_calls, 0)
        self.assertGreaterEqual(before.uptime_seconds, 0)

        app.run_code("1 + 1", shell_name="info-test")
        after = app.info()

        self.assertEqual(after.shell_count, 1)
        self.assertEqual(after.last_shell, "info-test")
        self.assertEqual(after.total_calls, 1)
        self.assertGreaterEqual(after.uptime_seconds, before.uptime_seconds)

    def test_web_app_exposes_info(self):
        response = TestClient(web_app).get("/info")

        self.assertEqual(response.status_code, 200)
        self.assertIsInstance(response.json()["shell_count"], int)

    async def test_mcp_app_exposes_info_tool(self):
        tools = await mcp_app.list_tools()

        self.assertIn("get_app_info", {tool.name for tool in tools})

    def test_langchain_exposes_info_tool(self):
        result = get_app_info.invoke({})

        self.assertIsInstance(result, AppInfo)


if __name__ == "__main__":
    unittest.main()