# -*- coding: utf-8 -*-
"""
validator_v2.py — 基于 jsonschema(draft2020-12) 的严格校验
validate_with_schema(ir, schema_path) -> (ok, issues, summary_msg)
"""
from __future__ import annotations
from typing import Any, List, Tuple
import json
from jsonschema import Draft202012Validator
from jsonschema.exceptions import best_match

def _format_path(err) -> str:
    if not err.path: return ""
    return "/".join(str(p) for p in err.path)

def validate_with_schema(ir: dict, schema_path: str) -> Tuple[bool, List[dict], str]:
    schema = json.loads(open(schema_path, "r", encoding="utf-8").read())
    validator = Draft202012Validator(schema)
    errors = sorted(validator.iter_errors(ir), key=lambda e: list(e.path))
    issues=[]
    for e in errors:
        issues.append({
            "severity": "ERROR",
            "path": _format_path(e),
            "message": e.message
        })
    ok = len(issues)==0
    msg = f"Schema: {'OK' if ok else 'FAIL'}; issues={len(issues)}"
    return ok, issues, msg