#!/usr/bin/env python3
"""Run RouterOS commands over SSH. Creds from env: ROS_HOST, ROS_PORT, ROS_USER, ROS_PASS.
Commands: one per line on stdin, or via --cmd. Prints output per command."""
import os, sys, paramiko

host = os.environ["ROS_HOST"]
port = int(os.environ.get("ROS_PORT", "22"))
user = os.environ["ROS_USER"]
pw   = os.environ["ROS_PASS"]

cmds = []
if "--cmd" in sys.argv:
    cmds = [sys.argv[sys.argv.index("--cmd") + 1]]
else:
    cmds = [l.rstrip("\n") for l in sys.stdin if l.strip()]

cli = paramiko.SSHClient()
cli.set_missing_host_key_policy(paramiko.AutoAddPolicy())
cli.connect(host, port=port, username=user, password=pw,
            look_for_keys=False, allow_agent=False, timeout=20)

for c in cmds:
    print(f"\n===== CMD: {c}")
    stdin, stdout, stderr = cli.exec_command(c, timeout=30)
    out = stdout.read().decode("utf-8", "replace")
    err = stderr.read().decode("utf-8", "replace")
    sys.stdout.write(out)
    if err.strip():
        sys.stdout.write("--- stderr ---\n" + err)
cli.close()