#!/bin/bash

# usage $0 [MAIL_HOST]

set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR

# setup things which involve being the primary host or not

if [[ $1 ]]; then
  new_host=$1
  sed -ri "s/MAIL_HOST=.*/MAIL_HOST=$new_host/" /a/bin/bash_unpublished/source-semi-priv
  source /a/bin/bash_unpublished/source-semi-priv
fi

if [[ $HOSTNAME == $MAIL_HOST ]]; then
  DISPLAY=:0 arbtt-capture --sample-rate=10 &
  sudo systemctl start rss2email.timer
  sudo systemctl enable rss2email.timer

else
  for ((i=0; i<10; i++)); do
    killall arbtt-capture || break
    sleep 1
    if [[ $i == 9 ]]; then
      exit 1
    fi
    sudo systemctl stop rss2email.timer
    sudo systemctl stop rss2email.service
    sudo systemctl disable rss2email.timer
  done
fi

mail-setup exim4
exit 0
: