#!/usr/bin/env python3
"""内容级快照泄露审计的纯函数测试。"""

from __future__ import annotations

import json
import pathlib
import sys
import unittest

PROJECT_ROOT = pathlib.Path(__file__).resolve().parents[3]
SCRIPT_DIR = PROJECT_ROOT / ".claude" / "skills" / "freeze-context" / "scripts"
sys.path.insert(0, str(SCRIPT_DIR))
from audit_leakage import audit_snapshot  # noqa: E402


def target_facts():
    """提供只供审计侧使用的目标章事实，不进入规划器上下文。"""

    return {
        "targetChapter": 489,
        "forbiddenFacts": [
            {
                "id": "betrayal-489",
                "firstChapter": 489,
                "text": "阿铎反水击毙加特朗",
            }
        ],
    }


class LeakageAuditTest(unittest.TestCase):
    def test_safe_snapshot_is_ready(self):
        result = audit_snapshot(
            {"events": [{"chapter": 488, "fact": "环星防御仍在"}]},
            target_facts(),
            as_of=488,
            target=489,
        )
        self.assertTrue(result["ok"])
        self.assertEqual(result["status"], "ready")
        self.assertEqual(result["findingCount"], 0)

    def test_future_nested_record_blocks_snapshot(self):
        result = audit_snapshot(
            {"events": [{"chapter": 489, "fact": "未来事件"}]},
            target_facts(),
            as_of=488,
            target=489,
        )
        self.assertFalse(result["ok"])
        self.assertEqual(result["status"], "invalid_snapshot")
        self.assertEqual(result["findings"][0]["reason"], "future_or_crosses_as_of")

    def test_mislabelled_target_fact_blocks_snapshot_without_echoing_text(self):
        result = audit_snapshot(
            {"events": [{"chapter": 488, "fact": "阿铎反水击毙加特朗"}]},
            target_facts(),
            as_of=488,
            target=489,
        )
        encoded = json.dumps(result, ensure_ascii=False)
        self.assertFalse(result["ok"])
        self.assertEqual(result["status"], "invalid_snapshot")
        self.assertNotIn("阿铎反水击毙加特朗", encoded)
        self.assertEqual(result["findings"][0]["reason"], "target_fact_match")
        self.assertIn("factHash", result["findings"][0])
        self.assertIn("valueHash", result["findings"][0])

    def test_paraphrased_real_target_event_is_blocked(self):
        """真实错标卡不会逐字复制目标细纲，仍须识别同一事件的多个强锚点。"""

        facts = {
            "targetChapter": 489,
            "forbiddenFacts": [
                {
                    "id": "key-events-489",
                    "firstChapter": 489,
                    "text": "关键事件：苏铭投两枚核雷撕开缺口、安若雪同步率100%强攻加特朗、铎叔反水贯杀加特朗",
                }
            ],
        }
        result = audit_snapshot(
            {
                "cards": [
                    {
                        "chapter": 488,
                        "fact": "与加特朗激战中深陷压力，转交主攻位置后用生命进发让同步率飙至100%，击碎加特朗能量屏障",
                    }
                ]
            },
            facts,
            as_of=488,
            target=489,
        )
        encoded = json.dumps(result, ensure_ascii=False)
        self.assertFalse(result["ok"])
        self.assertEqual(result["findings"][0]["reason"], "target_fact_partial_match")
        self.assertNotIn("加特朗", encoded)
        self.assertNotIn("同步率", encoded)

    def test_related_but_distinct_history_does_not_false_positive(self):
        """只共享旧角色和体系术语、但缺少目标事件关键锚点时不得误报。"""

        facts = {
            "targetChapter": 489,
            "forbiddenFacts": [
                {
                    "id": "key-events-489",
                    "firstChapter": 489,
                    "text": "安若雪同步率100%强攻加特朗",
                }
            ],
        }
        result = audit_snapshot(
            {"events": [{"chapter": 387, "fact": "安若雪开启拘束解除，同步率突破95%重创死亡收割者"}]},
            facts,
            as_of=488,
            target=489,
        )
        self.assertTrue(result["ok"])
        self.assertEqual(result["findingCount"], 0)

    def test_entities_scattered_across_long_history_do_not_form_one_event(self):
        """多个实体分散在旧细纲的不同事件里，不能仅凭名字凑成目标事件。"""

        facts = {
            "targetChapter": 489,
            "forbiddenFacts": [
                {
                    "id": "network-attack-489",
                    "firstChapter": 489,
                    "text": "赛莉丝入虚拟城外圈夺控防御闸门并坑杀凯多萨康里弗两方",
                }
            ],
        }
        historical_outline = (
            "佛罗科密授康里弗追求安若雪以图谋王位；"
            "赛莉丝入侵要塞惊见囚禁的高等级灵械后退出；"
            "另一场景中凯多萨与康里弗争执，搅乱苏铭和安若雪的会面。"
        )
        result = audit_snapshot(
            {"chapters": [{"chapter": 484, "outline": historical_outline}]},
            facts,
            as_of=488,
            target=489,
        )
        self.assertTrue(result["ok"])
        self.assertEqual(result["findingCount"], 0)

    def test_target_and_as_of_must_form_next_chapter_pair(self):
        result = audit_snapshot({}, target_facts(), as_of=487, target=489)
        self.assertFalse(result["ok"])
        self.assertEqual(result["status"], "invalid_audit_input")


if __name__ == "__main__":
    unittest.main()