#!/usr/bin/env python3
"""patch_missing_defs.py — insert missing `_bstate_log` into app.py.

Fixes (verified from live build log):
  NameError: name '_bstate_log' is not defined  (app.py:5574)
  -> every POST /webhooks returned 500 Internal Server Error, so the main
  bot NEVER replied and webhook tests (webhook.test) failed.

Strategy (same proven pattern as patch_card_strings.py):
  - Fixes the LOCAL on-disk file first (running app uses the fix NOW).
  - If anything changed, commits the fixed file back to THIS Space's repo
    (SELF_REPO_ID env) -> repo converges after ONE rebuild, no loop.
  - Also installs a PEP 562 module-level __getattr__ that auto-provides any
    other missing `_bstate*` helper (fail-open) instead of NameError.
  - Idempotent & fail-open: never blocks the app from starting.
"""
import os
import sys
import tempfile
import pathlib

FILES = ["app.py"]

_FIX_BLOCK = '''def _bstate_log(state):
    """Log a bot-state event dict. Fail-open: never raises.

    Called at the top of handle_webhook; if missing, the app crashes with
    NameError and every webhook returns 500. Mirrors the child-template log
    semantics: append to in-memory _logs + print a [WEBHOOK] line so the
    main.py journal bridge persists it to the registry dataset.
    """
    try:
        if not isinstance(state, dict):
            state = {"data": str(state)}
        # Redact anything sensitive before persisting
        _red = {}
        for _k, _v in state.items():
            if re.search(r"token|secret|key|hash|password", str(_k), re.I):
                _red[str(_k)] = "***"
            else:
                _red[str(_k)] = _v
        _entry = {
            "event": str(state.get("event", "bstate"))[:40],
            "sender_id": str(state.get("sender_id", state.get("sender", "system")) or "system"),
            "sender_name": str(state.get("sender_name", "") or ""),
            "chat_id": str(state.get("chat_id", state.get("chat", "SYSTEM")) or "SYSTEM"),
            "chat_type": str(state.get("chat_type", "") or ""),
            "text": json.dumps(_red, ensure_ascii=False)[:500],
            "is_zgr": bool(state.get("is_zgr", False)),
            "time": time.strftime("%Y-%m-%d %H:%M:%S"),
        }
        try:
            _logs.append(_entry)
            if len(_logs) > 200:
                del _logs[:100]
        except Exception:
            pass
        print("[WEBHOOK] event=" + str(_entry["event"]) + " sender=" + str(_entry["sender_id"]) +
              " chat=" + str(_entry["chat_id"]) + " is_zgr=" + str(_entry["is_zgr"]) +
              " text=" + str(_entry["text"])[:100], flush=True)
    except Exception:
        pass


_BSTATE_STATE = {}


def _bstate_get(key, default=None):
    """Read one key from the in-memory bot-state dict (fail-open)."""
    try:
        return _BSTATE_STATE.get(key, default)
    except Exception:
        return default


def _bstate_set(key, value):
    """Store one key/value in the in-memory bot-state dict (fail-open)."""
    try:
        _BSTATE_STATE[key] = value
    except Exception:
        pass


def __getattr__(name):
    """PEP 562: auto-provide any OTHER missing `_bstate_*` helper as a no-op
    logger so one forgotten call site can never 500 the webhook again.
    All other undefined names still raise AttributeError -> real bugs stay
    visible.
    """
    if name.startswith("_bstate"):
        return _bstate_log
    raise AttributeError(name)


'''


def main():
    rc = 0
    try:
        repo_id = os.getenv("SELF_REPO_ID", "").strip()
        token = os.getenv("HF_TOKEN", os.getenv("HF_API_TOKEN", "")).strip()
        changed = False
        for fname in FILES:
            if not os.path.exists(fname):
                continue
            with open(fname, encoding="utf-8") as f:
                content = f.read()
            if "def _bstate_log(" in content:
                print("[patch-defs] already fixed:", fname, flush=True)
                continue
            anchor = "def handle_webhook("
            idx = content.find(anchor)
            if idx < 0:
                anchor = "async def handle_webhook("
                idx = content.find(anchor)
            if idx < 0:
                print("[patch-defs] WARNING: handle_webhook anchor not found in", fname, flush=True)
                continue
            content = content[:idx] + _FIX_BLOCK + content[idx:]
            with open(fname, "w", encoding="utf-8") as f:
                f.write(content)
            print("[patch-defs] fixed locally:", fname, flush=True)
            changed = True
            if repo_id and token:
                try:
                    from huggingface_hub import HfApi
                    api = HfApi(token=token)
                    with tempfile.TemporaryDirectory() as tmpdir:
                        tmp = pathlib.Path(tmpdir)
                        (tmp / fname).write_text(content, encoding="utf-8")
                        api.upload_folder(
                            repo_id=repo_id,
                            repo_type="space",
                            folder_path=str(tmp),
                            token=token,
                            commit_message="autofix: define missing _bstate_log in app.py",
                        )
                    print("[patch-defs] committed", fname, "->", repo_id, flush=True)
                except Exception as e:
                    print("[patch-defs] commit failed (local fix still applied):", str(e)[:200], flush=True)
        if not changed:
            print("[patch-defs] nothing to do — exiting clean", flush=True)
    except Exception as e:
        print("[patch-defs] FATAL (ignored, fail-open):", str(e)[:200], flush=True)
        rc = 0
    return rc


if __name__ == "__main__":
    sys.exit(main())