"""`dwg_review.checklist` 单元测试。"""

import json

from dwg_review.checklist import (
    DEFAULT_CHECKLIST,
    build_system_prompt,
    checklist_summary,
    load_checklist,
)


def test_load_valid_checklist(tmp_path):
    data = {
        "name": "自定义清单",
        "categories": [{"title": "类别A", "severity": "high", "checks": ["检查1"]}],
    }
    path = tmp_path / "cl.json"
    path.write_text(json.dumps(data, ensure_ascii=False), encoding="utf-8")
    loaded = load_checklist(path)
    assert loaded["name"] == "自定义清单"
    assert loaded["categories"][0]["title"] == "类别A"


def test_load_missing_file_falls_back(tmp_path, capsys):
    loaded = load_checklist(tmp_path / "nope.json")
    assert loaded is DEFAULT_CHECKLIST
    assert "无法加载审查清单" in capsys.readouterr().out


def test_load_malformed_structure_falls_back(tmp_path, capsys):
    path = tmp_path / "cl.json"
    path.write_text(json.dumps({"name": "缺 categories"}), encoding="utf-8")
    assert load_checklist(path) is DEFAULT_CHECKLIST
    assert "结构异常" in capsys.readouterr().out


def test_load_invalid_json_falls_back(tmp_path, capsys):
    path = tmp_path / "cl.json"
    path.write_text("{ not json", encoding="utf-8")
    assert load_checklist(path) is DEFAULT_CHECKLIST
    assert "无法加载审查清单" in capsys.readouterr().out


def test_load_empty_categories_falls_back(tmp_path):
    path = tmp_path / "cl.json"
    path.write_text(json.dumps({"categories": []}), encoding="utf-8")
    assert load_checklist(path) is DEFAULT_CHECKLIST


def test_build_system_prompt_includes_categories_and_checks():
    prompt = build_system_prompt(DEFAULT_CHECKLIST)
    assert DEFAULT_CHECKLIST["name"] in prompt
    for cat in DEFAULT_CHECKLIST["categories"]:
        assert cat["title"] in prompt
        assert f"严重度：{cat['severity']}" in prompt
        for chk in cat["checks"]:
            assert chk in prompt


def test_build_system_prompt_tool_hint_toggle():
    with_tools = build_system_prompt(DEFAULT_CHECKLIST, allow_tools=True)
    without = build_system_prompt(DEFAULT_CHECKLIST, allow_tools=False)
    assert "只读" in with_tools and "取证工具" in with_tools
    assert "只读" not in without


def test_build_system_prompt_instructs_inspect_region():
    prompt = build_system_prompt(DEFAULT_CHECKLIST, allow_tools=True)
    # 放大取证走 inspect_region 这一个语义化入口（不再让 LLM 自己组合裸视口工具）
    assert "inspect_region" in prompt
    assert "handle" in prompt and "label" in prompt and "window" in prompt
    assert "cx" in prompt and "cy" in prompt
    assert "从上到下" in prompt  # cy 方向必须写清（图像坐标）
    assert "inspect-N" in prompt  # 返回标签可继续下钻
    assert "不需要判断截图够不够清楚" in prompt


def test_build_system_prompt_mentions_collision_tool():
    prompt = build_system_prompt(DEFAULT_CHECKLIST, allow_tools=True)
    # 干涉排查入口：find_collisions 粗筛候选 + 强调 AABB 相交 ≠ 真干涉
    assert "find_collisions" in prompt
    assert "包围盒相交" in prompt
    assert "不等于真干涉" in prompt


def test_default_checklist_has_collision_category():
    titles = [c["title"] for c in DEFAULT_CHECKLIST["categories"]]
    assert "干涉/碰撞" in titles


def test_build_system_prompt_requires_structured_json_output():
    # allow_tools=False 以隔离「工具提示块」里的「只读」字样
    prompt = build_system_prompt(DEFAULT_CHECKLIST, allow_tools=False)
    assert "JSON" in prompt
    assert '"summary"' in prompt
    assert '"issues"' in prompt
    assert '"severity"' in prompt and '"category"' in prompt and '"handle"' in prompt
    # 结构化契约本身不得含「只读」，否则会破坏 allow_tools 开关的判别
    assert "只读" not in prompt


def test_build_system_prompt_forbids_fabricated_handle():
    prompt = build_system_prompt(DEFAULT_CHECKLIST)
    assert "不要编造" in prompt


def test_checklist_summary_mentions_name_and_count():
    summary = checklist_summary(DEFAULT_CHECKLIST)
    assert DEFAULT_CHECKLIST["name"] in summary
    assert str(len(DEFAULT_CHECKLIST["categories"])) in summary
    assert DEFAULT_CHECKLIST["categories"][0]["title"] in summary