#!/usr/bin/env python3
"""Frozen command analysis와 CommandPatchSet을 사용해 command span만 교체한다."""
from __future__ import annotations

import argparse
import json
import os
import sys

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from command_pedagogy import apply_command_patch_set  # noqa: E402


def load_json(path: str) -> dict:
    with open(path, encoding="utf-8") as fh:
        value = json.load(fh)
    if not isinstance(value, dict):
        raise ValueError(f"JSON object가 아니다: {path}")
    return value


def main() -> int:
    ap = argparse.ArgumentParser(description="CommandPatchSet을 원래 command span 안에만 적용한다")
    ap.add_argument("record", help="원본 Markdown")
    ap.add_argument("analysis", help="check-command-pedagogy.py가 만든 initial analysis JSON")
    ap.add_argument("patch_set", help="command-pedagogy-editor가 만든 patch JSON")
    ap.add_argument("-o", "--output", required=True, help="수정된 Markdown 출력 경로")
    args = ap.parse_args()

    try:
        with open(args.record, encoding="utf-8") as fh:
            text = fh.read()
        analysis = load_json(args.analysis)
        patch_set = load_json(args.patch_set)
        repaired = apply_command_patch_set(text=text, analysis=analysis, patch_set=patch_set)
    except (OSError, json.JSONDecodeError, ValueError) as exc:
        print(f"command patch를 적용하지 못했다: {exc}", file=sys.stderr)
        return 2

    os.makedirs(os.path.dirname(args.output) or ".", exist_ok=True)
    with open(args.output, "w", encoding="utf-8") as fh:
        fh.write(repaired)
    print(f"command span만 적용했다: {args.output}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())