lxmf_thermal.py

#!/usr/bin/env python3
import sys
import os
import RNS
import LXMF
from datetime import datetime

MSG_FILE = sys.argv[1]
PRINTER = "/dev/usb/lp0"  # adjust as needed

message = LXMF.LXMessage.unpack_from_file(open(MSG_FILE, "rb"))

content = message.content_as_string()
sender = RNS.prettyhexrep(message.source_hash)
time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")

with open(PRINTER, "wb") as p:
    p.write(f"""
==============================
      LXMF MESSAGE
------------------------------
{time}
From: {sender}

{content}

==============================
\n\n""".encode())
    p.write(b'\x1d\x56\x00')  # full cut

os.remove(MSG_FILE)