"""Tests for the admin-configured「按类型聚合」module → agent-tag config.

Backs the zzJC / zzXD module left sidebar (需求 0616 #3/#4): an admin picks
which agent tags belong to the module, persisted in ``system_settings.json``.
"""

from __future__ import annotations

import json
from pathlib import Path

import pytest

from deerflow.config import system_settings as ss


@pytest.fixture
def tmp_runtime_home(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> Path:
    """Redirect ``runtime_home()`` to a per-test tmp dir."""

    def fake_home() -> Path:
        return tmp_path

    monkeypatch.setattr(ss, "runtime_home", fake_home)
    return tmp_path


def test_load_returns_empty_modules_when_missing(tmp_runtime_home: Path) -> None:
    settings = ss.load_system_settings()
    assert settings.agent_modules.modules == {}
    assert ss.get_module_tag_ids(settings.agent_modules, "zzjc") == []


def test_set_module_tag_ids_dedupes_and_strips() -> None:
    base = ss.AgentModuleSettings()
    updated = ss.set_module_tag_ids(base, "zzjc", ["  t1 ", "t2", "t1", "", "  "])
    assert updated.modules["zzjc"] == ["t1", "t2"]
    # Original is untouched (returns a copy).
    assert base.modules == {}


def test_set_module_tag_ids_keeps_other_modules() -> None:
    base = ss.set_module_tag_ids(ss.AgentModuleSettings(), "zzjc", ["t1"])
    both = ss.set_module_tag_ids(base, "zzxd", ["t2", "t3"])
    assert ss.get_module_tag_ids(both, "zzjc") == ["t1"]
    assert ss.get_module_tag_ids(both, "zzxd") == ["t2", "t3"]


def test_save_then_load_roundtrips(tmp_runtime_home: Path) -> None:
    current = ss.load_system_settings()
    updated = ss.set_module_tag_ids(current.agent_modules, "zzjc", ["tag-a", "tag-b"])
    ss.save_system_settings(current.model_copy(update={"agent_modules": updated}))

    file_path = tmp_runtime_home / "system_settings.json"
    assert file_path.is_file()
    saved = json.loads(file_path.read_text(encoding="utf-8"))
    assert saved["agent_modules"]["modules"]["zzjc"] == ["tag-a", "tag-b"]

    reloaded = ss.load_system_settings()
    assert ss.get_module_tag_ids(reloaded.agent_modules, "zzjc") == ["tag-a", "tag-b"]