#!/usr/bin/env python3
"""Bound local-STT conversion errors in the pinned Hermes Agent source."""

import os
from pathlib import Path


ROOT = Path(os.environ.get("HERMES_AGENT_PATCH_ROOT", "/opt/hermes"))


def replace_exact(path: Path, before: str, after: str) -> None:
    """Replace one exact upstream fragment, failing closed on image drift."""
    source = path.read_text(encoding="utf-8")
    if source.count(before) != 1:
        raise SystemExit(f"Hermes STT patch context changed in {path}: {before[:80]!r}")
    path.write_text(source.replace(before, after, 1), encoding="utf-8")


transcription = ROOT / "tools/transcription_tools.py"
replace_exact(
    transcription,
    """    except subprocess.CalledProcessError as e:
        details = e.stderr.strip() or e.stdout.strip() or str(e)
        logger.error("ffmpeg conversion failed for %s: %s", file_path, details)
        return None, f"Failed to convert audio for local STT: {details}"
""",
    """    except subprocess.CalledProcessError as e:
        details = e.stderr.strip() or e.stdout.strip() or str(e)
        logger.error(
            "ffmpeg conversion failed for %s: %s", file_path, details[-2000:]
        )
        return None, (
            "Audio conversion failed: upload is invalid, incomplete, or uses an "
            "unsupported codec"
        )
""",
)