"""Conftest for opencode-openenv tests.

The env directory is named ``openenv`` which collides with the installed
``openenv-core`` namespace when pytest adds the parent directory
(``…/opencode``) to ``sys.path``. Strip the shadowing entries and evict
any already-loaded stale modules so ``import openenv.core`` resolves to
the installed package.
"""

from __future__ import annotations

import os
import sys


_OPENENV_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
_OPENCODE_PARENT = os.path.dirname(_OPENENV_DIR)

for _entry in (_OPENCODE_PARENT, _OPENENV_DIR):
    while _entry in sys.path:
        sys.path.remove(_entry)

_stale_candidates = [
    k
    for k in list(sys.modules)
    if (k == "openenv" or k.startswith("openenv."))
    and not k.startswith("openenv.tests")  # keep the conftest's own module
]
for _stale in _stale_candidates:
    module = sys.modules[_stale]
    module_file = getattr(module, "__file__", None) or ""
    # Only evict the modules that resolved to our shadow env directory.
    if module_file.startswith(_OPENENV_DIR + os.sep) or (
        _OPENENV_DIR in module_file and "/.venv/" not in module_file
    ):
        sys.modules.pop(_stale, None)

# Sanity check — fail loudly at collection time if the import still breaks.
try:
    import openenv.core  # noqa: F401
except ImportError as exc:
    raise ImportError(
        "openenv.core still not importable after sys.path scrub; check that "
        "openenv-core is installed in the env's .venv."
    ) from exc