"""SettingsStore 单测（封闭：临时路径）。"""
import json

from gateway.settings import DEFAULTS, SettingsStore, _coerce


def test_defaults(tmp_path):
    s = SettingsStore(path=tmp_path / "s.json")
    d = s.to_dict()
    assert d["worker"]["backend"] == "llama_server"
    assert "pipeline" in d and "architect" in d


def test_update_and_coerce(tmp_path):
    s = SettingsStore(path=tmp_path / "s.json")
    s.update({"worker": {"backend": "openai", "temperature": "0.4", "max_fix_attempts": "3"}})
    d = s.to_dict()
    assert d["worker"]["backend"] == "openai"
    assert d["worker"]["temperature"] == 0.4      # 字符串转 float
    assert d["worker"]["max_fix_attempts"] == 3   # 字符串转 int


def test_ignores_unknown_keys(tmp_path):
    s = SettingsStore(path=tmp_path / "s.json")
    s.update({"worker": {"not_a_key": 1}, "unknown_section": {"x": 1}})
    d = s.to_dict()
    assert "not_a_key" not in d["worker"]
    assert "unknown_section" not in d


def test_persistence_roundtrip(tmp_path):
    p = tmp_path / "s.json"
    s = SettingsStore(path=p)
    s.update({"worker": {"temperature": 0.5}})
    s2 = SettingsStore(path=p)  # 重新加载
    assert s2.to_dict()["worker"]["temperature"] == 0.5


def test_reset(tmp_path):
    s = SettingsStore(path=tmp_path / "s.json")
    s.update({"worker": {"backend": "mock"}})
    d = s.reset()
    assert d["worker"]["backend"] == "llama_server"


def test_coerce():
    assert _coerce("true", True) is True
    assert _coerce("42", 0) == 42
    assert _coerce("bad", 0) == 0
    assert _coerce(1.5, 0.0) == 1.5