cd /home/def/otb_billing/backend || exit 1
set -e

STAMP="$(date +%Y%m%d-%H%M%S)"
cp app.py "app.py.fix-dead-pending.${STAMP}.bak"

python3 <<'PY'
from pathlib import Path

p = Path("app.py")
text = p.read_text()

needle = "if payment_id.isdigit():"

if needle not in text:
    raise SystemExit("FAILED: anchor not found")

inject = """
        # === KILL DEAD PENDING PAYMENT (no txid + expired lock) ===
        if pending_crypto_payment:
            try:
                txid = pending_crypto_payment.get("txid")
                lock_expired = pending_crypto_payment.get("lock_expired")

                if (not txid) and lock_expired:
                    pending_crypto_payment = None
                    payment_id = ""
            except Exception as e:
                print("[dead pending cleanup error]", e)
"""

text = text.replace(needle, inject + "\n" + needle, 1)

p.write_text(text)
print("OK: dead pending cleanup injected")
PY

echo "===== compile check ====="
python3 -m py_compile app.py && echo "PY_COMPILE_OK"

echo "===== restart service ====="
sudo systemctl restart otb_billing

echo "===== status ====="
sudo systemctl status otb_billing --no-pager -l

echo
echo "DONE"
echo "Now refresh your invoice page"