"""Swagger / ReDoc / OpenAPI 文档路由安全开关测试。

生产环境（APP_ENV=prod）默认关闭 /docs、/redoc、/openapi.json，
避免未授权访问泄露 API 结构；本地开发环境默认开放，可用 ENABLE_DOCS 覆盖。
"""
from __future__ import annotations

import pytest

from app.core.config import docs_kwargs, get_settings


@pytest.fixture(autouse=True)
def _reset_settings_cache():
    """每次测试前后清空 get_settings 的 lru_cache，避免环境变量互相污染。"""
    get_settings.cache_clear()
    yield
    get_settings.cache_clear()


def test_docs_kwargs_enabled() -> None:
    assert docs_kwargs(True) == {}


def test_docs_kwargs_disabled() -> None:
    assert docs_kwargs(False) == {"docs_url": None, "redoc_url": None, "openapi_url": None}


def test_docs_disabled_by_default_in_prod(monkeypatch) -> None:
    monkeypatch.delenv("ENABLE_DOCS", raising=False)
    monkeypatch.setenv("APP_ENV", "prod")
    assert get_settings().enable_docs is False


def test_docs_enabled_by_default_outside_prod(monkeypatch) -> None:
    monkeypatch.delenv("ENABLE_DOCS", raising=False)
    monkeypatch.setenv("APP_ENV", "local")
    assert get_settings().enable_docs is True


def test_docs_env_override_enables_in_prod(monkeypatch) -> None:
    monkeypatch.setenv("ENABLE_DOCS", "true")
    monkeypatch.setenv("APP_ENV", "prod")
    assert get_settings().enable_docs is True


def test_docs_env_override_disables_outside_prod(monkeypatch) -> None:
    monkeypatch.setenv("ENABLE_DOCS", "false")
    monkeypatch.setenv("APP_ENV", "local")
    assert get_settings().enable_docs is False


def test_create_app_disables_docs_in_prod(monkeypatch, tmp_path) -> None:
    pytest.importorskip("fastapi")
    from app.main import create_app

    monkeypatch.delenv("ENABLE_DOCS", raising=False)
    monkeypatch.setenv("APP_ENV", "prod")
    monkeypatch.setenv("LOG_DIR", str(tmp_path))
    app = create_app()
    assert app.docs_url is None
    assert app.redoc_url is None
    assert app.openapi_url is None


def test_create_app_enables_docs_outside_prod(monkeypatch, tmp_path) -> None:
    pytest.importorskip("fastapi")
    from app.main import create_app

    monkeypatch.delenv("ENABLE_DOCS", raising=False)
    monkeypatch.setenv("APP_ENV", "local")
    monkeypatch.setenv("LOG_DIR", str(tmp_path))
    app = create_app()
    assert app.docs_url == "/docs"
    assert app.redoc_url == "/redoc"
    assert app.openapi_url == "/openapi.json"