"""独立离线核验；Python 3.12 标准库，无网络或设备访问。"""
from pathlib import Path
import json
import struct
import datetime as dt
import math
import re
import uuid

def parse(d):
    b=bytes.fromhex(d['hex'])
    if len(b) not in (7,9) or b[0]!=0x0c or b[5]!=0x19: raise ValueError('请求体子集结构错误')
    oid=int.from_bytes(b[1:5],'big'); index=None
    if len(b)==9:
        if b[7]!=0x29: raise ValueError('数组索引上下文错误')
        index=b[8]
    meaning='整个属性' if index is None else '数组元素数量' if index==0 else f'第{index}个数组元素'
    return {'object_type':oid>>22,'instance':oid&0x3fffff,'property':b[6],'index':index,'meaning':meaning}


def main():
    root = Path(__file__).resolve().parent
    fixture = json.loads((root / "fixture.json").read_text(encoding="utf-8"))
    rows = []
    for item in fixture["cases"]:
        try:
            result = parse(item["input"])
        except ValueError as exc:
            assert "expected_error" in item, (item["case_id"], str(exc))
            assert str(exc) == item["expected_error"], (item["case_id"], str(exc))
            rows.append({"case_id": item["case_id"], "kind": item["kind"], "rejected": str(exc)})
        else:
            assert "expected_error" not in item, item["case_id"]
            assert result == item["expected"], (item["case_id"], result, item["expected"])
            rows.append({"case_id": item["case_id"], "kind": item["kind"], "result": result})
    report = {"fixture": fixture["topic"], "cases": rows, "assertions_passed": len(rows), "scope": "合成输入离线演算；未接真实设备"}
    (root / "report.json").write_text(json.dumps(report, ensure_ascii=False, indent=2) + "\n", encoding="utf-8")
    print(json.dumps({"assertions_passed": len(rows), "all_passed": True}, ensure_ascii=True))

if __name__ == "__main__":
    main()