from __future__ import annotations

import json
import subprocess
import sys
from pathlib import Path


PROJECT_ROOT = Path(__file__).parents[1]


def _run_isolated(code: str) -> dict:
    result = subprocess.run(
        [sys.executable, "-c", code],
        cwd=PROJECT_ROOT,
        check=True,
        capture_output=True,
        text=True,
    )
    return json.loads(result.stdout)


def test_import_agent_does_not_configure_logging_or_mutate_sys_path() -> None:
    result = _run_isolated(
        """
import json
import logging
import sys

handlers_before = tuple(logging.getLogger().handlers)
path_before = tuple(sys.path)
import agent
print(json.dumps({
    "handlers_unchanged": tuple(logging.getLogger().handlers) == handlers_before,
    "path_unchanged": tuple(sys.path) == path_before,
}))
"""
    )

    assert result == {"handlers_unchanged": True, "path_unchanged": True}


def test_packaged_im_client_is_the_builtin_runtime() -> None:
    result = _run_isolated(
        """
import json
from agent.im_client import IMClient
from agent.tools.builtin.im.chat import IMClient as BuiltinIMClient
print(json.dumps({"same_client": IMClient is BuiltinIMClient}))
"""
    )

    assert result == {"same_client": True}