from __future__ import annotations

from pathlib import Path

import backend.config_admin as config_admin


def test_read_config_values_delegates_to_shared_reader(monkeypatch):
    monkeypatch.setattr(
        config_admin,
        "read_settings_values",
        lambda keys, reload=False: {"HOST": "127.0.0.1", "PORT": "5000"},
    )

    payload = config_admin.read_config_values(["HOST", "PORT"])

    assert payload == {"HOST": "127.0.0.1", "PORT": "5000"}


def test_write_config_values_uses_shared_env_target(monkeypatch):
    class _FakeParent:
        def mkdir(self, parents=False, exist_ok=False):
            return None

    class _FakeEnvFile:
        def __init__(self) -> None:
            self.parent = _FakeParent()
            self.content = "HOST=0.0.0.0\n"

        def exists(self) -> bool:
            return True

        def read_text(self, encoding="utf-8") -> str:
            return self.content

        def write_text(self, value: str, encoding="utf-8") -> None:
            self.content = value

    env_file = _FakeEnvFile()

    monkeypatch.setattr(
        config_admin,
        "resolve_settings_write_env_file",
        lambda **kwargs: env_file,
    )
    monkeypatch.setattr(config_admin, "_load_config_module", lambda: None)

    config_admin.write_config_values({"HOST": "127.0.0.1", "PORT": 5001})

    assert env_file.read_text(encoding="utf-8") == "HOST=127.0.0.1\nPORT=5001\n"