#!/bin/bash

TO=$1
MESSAGE=$2

if [[ $TO =~ ^@ ]]; then
  # This is a matrix user. We need to create a room before we can send
  # But first check if we haven't already one
  if [ -e ~/.matrix_zabbix/$TO ]; then
    # We already have a room for this user, just send it there
    TO=$(cat ~/.matrix_zabbix/$TO)
  else
    # Create a new room, invite the user, and grant him admin privileges
    USER=$TO
    TO=$(patrix --create-room --name="Zabbix Alerter for $TO" --topic='Alerts' --invite=$TO)
    patrix --modify-room --room=$TO --user-perm "$USER=100"
    echo $TO > ~/.matrix_zabbix/$USER
  fi
fi
# Check we now have a room ID or alias
if [[ $TO =~ ^[\!\#] ]]; then
  echo "$MESSAGE" | patrix --room=$TO
else
  echo "Can't send to $TO"
  exit 1
fi