"""B0 冒烟：工具链与包结构可用（不测业务逻辑，业务逻辑随 B1 迁移进来）。"""

import ast
import subprocess
import sys
from pathlib import Path

import pytest

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "src" / "aps"

# 平台侧模块名与旧仓库里 APS 代码的模块名：出现即视为跨系统依赖（ADR-0010 边界规则）
PLATFORM_MODULES = {"server", "agent_core", "aps_domain", "aps_engines", "aps_state", "aps_importers"}


def test_package_imports() -> None:
    import aps

    assert aps.__version__ == "0.1.0"


@pytest.mark.parametrize("name", ["api", "domain", "engines", "state", "importers", "governance"])
def test_subpackages_import(name: str) -> None:
    """每个子包都对应 B 线的一个搬迁目标，导入不了说明结构被改坏了。"""
    module = __import__(f"aps.{name}", fromlist=[name])

    assert module.__doc__, f"aps.{name} 缺少说明它负责什么的 docstring"


def test_no_platform_module_imports() -> None:
    """边界规则（ADR-0010）：APS 不得 import 平台代码，只允许走 HTTP 契约。

    B3 会用 CI 卡住这条；这里先把它变成可执行规则，任何新增文件一旦越界立刻红。
    """
    offenders: list[str] = []
    for path in sorted(SRC.rglob("*.py")):
        tree = ast.parse(path.read_text(encoding="utf-8"), filename=str(path))
        for node in ast.walk(tree):
            if isinstance(node, ast.Import):
                names = [alias.name for alias in node.names]
            elif isinstance(node, ast.ImportFrom):
                names = [node.module or ""]
            else:
                continue
            for name in names:
                if name.split(".")[0] in PLATFORM_MODULES:
                    offenders.append(f"{path.relative_to(ROOT)}: {name}")

    assert offenders == [], "APS 不得依赖平台代码：" + "；".join(offenders)


def test_platform_code_is_not_imported() -> None:
    """APS 不依赖平台代码：aps 包内不得出现对平台模块的引用（ADR-0010）。"""
    result = subprocess.run(
        [
            sys.executable,
            "-c",
            "import aps, aps.api, aps.domain, aps.engines, aps.state, aps.importers, aps.governance",
        ],
        capture_output=True,
        text=True,
    )

    assert result.returncode == 0, result.stderr