"""框架端口纯度门：framework 不得反向依赖 Muse 业务实现。"""

from __future__ import annotations

import pathlib
import re
import unittest

ROOT = next(
    parent
    for parent in (pathlib.Path(__file__).resolve().parent, *pathlib.Path(__file__).resolve().parents)
    if (parent / "AGENTS.md").is_file() and (parent / ".git").exists()
)
FORBIDDEN_IMPORTS = (
    "agent_trace",
    "muse_role",
    "muse_role_contract",
    "muse_db",
    "psycopg",
    "fixed-opus",
)


class FrameworkPortPurityTest(unittest.TestCase):
    def test_framework_does_not_import_muse_runtime_contracts(self) -> None:
        offenders: list[str] = []
        pattern = re.compile(
            r"(?:from|import)\s+(?:" + "|".join(map(re.escape, FORBIDDEN_IMPORTS)) + r")\b"
        )
        for path in (ROOT / "framework").rglob("*"):
            if not path.is_file() or "__pycache__" in path.parts:
                continue
            if path.suffix not in {".py", ".ts", ".md"}:
                continue
            text = path.read_text(encoding="utf-8")
            if pattern.search(text):
                offenders.append(path.relative_to(ROOT).as_posix())
        self.assertEqual(offenders, [], "framework 反向依赖 Muse 业务合同或运行时：\n" + "\n".join(offenders))


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