"""AI 味诊断器的回归测试：能抓住植入的 AI 腔，也不冤枉正常句子。"""
from __future__ import annotations

import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from dfannals import deslop

# 故意堆满 AI 腔：禁用词、万能动宾、收束腔、破折号、省略号、认知直述
AI_TEXT = (
    "他心中一震，眼中闪过一丝惊讶，仿佛看见了命运的獠牙——这一刻，他终于明白，"
    "一切都已经太晚了。他深吸一口气，嘴角勾起一抹冷笑，带着不容置疑的语气说："
    "“走吧。”他知道，属于他的反击才刚刚开始……"
)

CLEAN_TEXT = (
    "Ral把绳子绕了两圈，打了个结。她没说话，把账本推过去，指着第三行。"
    "Guspu看了很久，把账本合上，还给她。窗外的风把灯吹得晃，两人谁都没去扶。"
)


def test_hard_hits_are_caught() -> None:
    hits = deslop.hard_hits(deslop.check(AI_TEXT))
    rules = {h.rule for h in hits}
    for expected in ("心理模板", "眼中闪过", "一丝", "仿佛", "深吸一口气", "嘴角勾起",
                     "不容置疑", "破折号", "省略号"):
        assert expected in rules, f"漏检: {expected}（实际命中 {sorted(rules)}）"


def test_cognitive_and_closure_patterns() -> None:
    hits = deslop.hard_hits(deslop.check(AI_TEXT))
    rules = {h.rule for h in hits}
    assert "认知直述" in rules, "「他知道」应被抓住"
    assert "收束腔" in rules, "「这一刻」「才刚刚开始」应被抓住"
    assert "万能动宾" in rules, "「，带着……」应被抓住"
    assert "抽象命运" in rules, "「命运的獠牙」应被抓住"


def test_clean_text_has_no_hard_hits() -> None:
    hits = deslop.hard_hits(deslop.check(CLEAN_TEXT))
    assert not hits, f"正常句子被误判: {[h.line() for h in hits]}"


def test_not_a_but_b_pattern() -> None:
    hits = deslop.check("他不是冷漠，而是绝望。")
    assert any(h.rule == "不是A而是B" for h in deslop.hard_hits(hits))


def test_density_separates_ai_from_clean() -> None:
    ai, clean = deslop.per_k(AI_TEXT), deslop.per_k(CLEAN_TEXT)
    assert ai > clean, f"AI 稿密度应高于正常稿：{ai:.1f} vs {clean:.1f}"
    assert clean == 0.0


def test_report_and_digest_render() -> None:
    rep = deslop.report(AI_TEXT)
    assert "硬伤" in rep and "字" in rep
    dig = deslop.digest(AI_TEXT)
    assert dig.startswith("- "), dig[:80]
    assert "机械检查没有发现" in deslop.digest(CLEAN_TEXT)


def test_digest_lists_each_rule_once() -> None:
    dig = deslop.digest(AI_TEXT)
    rules = [line.split("『")[1].split("』")[0] for line in dig.splitlines()]
    assert len(rules) == len(set(rules)), f"同一规则重复列出: {rules}"


def _main() -> int:
    tests = [v for k, v in sorted(globals().items()) if k.startswith("test_") and callable(v)]
    failed = 0
    for fn in tests:
        try:
            fn()
        except AssertionError as exc:
            failed += 1
            print(f"  ✗ {fn.__name__}: {exc}")
        except Exception as exc:  # noqa: BLE001
            failed += 1
            print(f"  ✗ {fn.__name__}: {type(exc).__name__}: {exc}")
        else:
            print(f"  ✓ {fn.__name__}")
    print(f"\n{len(tests) - failed}/{len(tests)} 通过")
    return 1 if failed else 0


if __name__ == "__main__":
    sys.exit(_main())