#!/usr/bin/env bash
# Update BirdNET-Pi
source /etc/birdnet/birdnet.conf
trap 'rm -f ${tmpfile}' EXIT
trap 'exit 1' SIGINT SIGHUP
USER=pi
HOME=/home/pi
my_dir=${HOME}/BirdNET-Pi/scripts
tmpfile=$(mktemp)

services=$(awk '/service/ && /systemctl/ && !/php/ {print $3}' ${my_dir}/install_services.sh | sort)

remove_services() {
  for i in "${services[@]}"; do
    if [ -L /etc/systemd/system/multi-user.target.wants/"${i}" ];then
      sudo systemctl kill "${i}"
      sudo systemctl disable "${i}"
    fi
    if [ -f /etc/systemd/system/"${i}" ];then
      sudo rm /etc/systemd/system/"${i}"
    fi
    if [ -d /etc/systemd/system/"${i}" ];then
      sudo rm -drf /etc/systemd/system/"${i}"
    fi
  done
  remove_icecast
  remove_crons
}

remove_crons() {
  crontab -u${USER} -l | sed -e '/birdnet/,+1d' > "${tmpfile}"
  crontab -u${USER} "${tmpfile}"
}

remove_icecast() {
  if [ -f /etc/init.d/icecast2 ];then
    sudo /etc/init.d/icecast2 stop
    sudo systemctl disable --now icecast2
  fi
}

remove_scripts() {
  for i in "${scripts[@]}";do
    if [ -L "/usr/local/bin/${i}" ];then
      sudo rm -v "/usr/local/bin/${i}"
    fi
  done
}

# Stage 1 removes old stuff
remove_services
remove_scripts

# Stage 2 does a git pull to fetch new things
sudo -u${USER} git -C ${HOME}/BirdNET-Pi checkout -f
sudo -u${USER} git -C ${HOME}/BirdNET-Pi pull -f
# Trigger the new update_birdnet2.sh
sudo -u${USER} ${my_dir}/update_birdnet2.sh