"""test_settings.py —— 限额常量与路径配置。"""
from __future__ import annotations

import os

import pytest

from vstore import settings
from vstore.settings import VstorePaths, get_fernet_key


def test_limits_match_brief():
    """2026-09-04：上传限制常量已移除（手工测试要求），保留结构常量。"""
    assert settings.MAX_SECTIONS == 12
    assert settings.MAX_OUTLINE_CHUNKS == 3
    assert settings.EMBED_BODY_CAP == 200_000
    assert settings.EMBED_DIM == 1024
    for gone in ("MAX_ATTACH_COUNT", "MAX_ATTACH_BYTES", "MAX_ATTACH_CHARS"):
        assert not hasattr(settings, gone), f"{gone} 应已移除"


def test_paths_default_derivation(tmp_path):
    paths = VstorePaths(root=str(tmp_path))
    assert paths.vault_path == str(tmp_path / "vault")
    assert paths.index_path == str(tmp_path / "index")


def test_paths_explicit_override():
    paths = VstorePaths(root="/x", vault_path="/v", index_path="http://h:1")
    assert paths.vault_path == "/v"
    assert paths.index_path == "http://h:1"


def test_embed_defaults():
    assert settings.DEFAULT_EMBED_URL == "http://127.0.0.1:11434"
    assert settings.DEFAULT_EMBED_MODEL == "bge-m3:567m"


def test_fernet_key_required(monkeypatch):
    monkeypatch.delenv("VSTORE_KEY", raising=False)
    with pytest.raises(RuntimeError):
        get_fernet_key()


def test_fernet_key_ok(monkeypatch):
    monkeypatch.setenv("VSTORE_KEY", "k" * 44)
    assert get_fernet_key() == b"k" * 44