"""验证本地运行目录策略，不需要连接设备。"""

from __future__ import annotations

import os
import sys
from pathlib import Path
import tempfile
import unittest
from unittest import mock


CLIENT_ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(CLIENT_ROOT / "src"))

from cmbuyer_client.runtime import LocalStateRuntime, RuntimePaths


class RuntimePathsTests(unittest.TestCase):
    def test_ensure_exists_creates_only_runtime_directories(self) -> None:
        with tempfile.TemporaryDirectory() as directory:
            paths = RuntimePaths.from_root(Path(directory) / "runtime")

            paths.ensure_exists()

            self.assertTrue(paths.logs.is_dir())
            self.assertTrue(paths.artifacts.is_dir())
            self.assertTrue(paths.state.is_dir())
            self.assertEqual(paths.database, paths.state / "client-state.sqlite3")

    def test_localstate_runtime_acquires_mutex_before_protector_and_store(self) -> None:
        events: list[str] = []

        class Mutex:
            def __init__(self, path: Path) -> None:
                events.append("mutex")

            def close(self) -> None:
                events.append("close")

        with tempfile.TemporaryDirectory() as directory:
            runtime = LocalStateRuntime.open(
                RuntimePaths.from_root(Path(directory)),
                mutex_factory=Mutex,
                protector_factory=lambda: events.append("protector") or object(),
                store_factory=lambda path, protector: events.append("store") or object(),
            )
            runtime.close()
        self.assertEqual(events, ["mutex", "protector", "store", "close"])

    def test_localstate_runtime_releases_mutex_if_open_fails(self) -> None:
        events: list[str] = []

        class Mutex:
            def __init__(self, path: Path) -> None:
                events.append("mutex")

            def close(self) -> None:
                events.append("close")

        def fail() -> object:
            raise RuntimeError("failed")

        with tempfile.TemporaryDirectory() as directory, self.assertRaises(RuntimeError):
            LocalStateRuntime.open(
                RuntimePaths.from_root(Path(directory)),
                mutex_factory=Mutex,
                protector_factory=fail,
            )
        self.assertEqual(events, ["mutex", "close"])

    def test_windows_without_localappdata_fails_instead_of_creating_second_database(self) -> None:
        with mock.patch("cmbuyer_client.runtime.os.name", "nt"), mock.patch.dict(os.environ, {}, clear=True):
            with self.assertRaisesRegex(RuntimeError, "local_app_data_required"):
                RuntimePaths.default()

    def test_runtime_root_is_frozen_absolute_and_relative_localappdata_is_rejected(self) -> None:
        paths = RuntimePaths.from_root(Path("relative-runtime"))
        self.assertTrue(paths.root.is_absolute())
        with mock.patch.dict(os.environ, {"LOCALAPPDATA": "relative-local-app-data"}, clear=True):
            with self.assertRaisesRegex(RuntimeError, "local_app_data_must_be_absolute"):
                RuntimePaths.default()