"""示例 adapter 四档 dispatch。

由 ``OPENCLAW_TEST_TARGET``（或 ``config.get``）决定档位。
复制本目录后把 ``example_adapter`` 改名为 ``<domain>_adapter``。
"""

from __future__ import annotations

import os

from .mock import MockAdapter
from .real_api import RealApiAdapter
from .real_rpa import RealRpaAdapter
from .sim_rpa import SimRpaAdapter


def get_adapter():
    """返回当前档位 adapter 实例。"""
    target = (os.environ.get("OPENCLAW_TEST_TARGET") or "simulator_rpa").strip().lower()
    if target in ("unit", "mock"):
        return MockAdapter()
    if target == "real_api":
        return RealApiAdapter()
    if target == "real_rpa":
        return RealRpaAdapter()
    return SimRpaAdapter()