#!/usr/bin/env bash

run_directory=$(dirname "$0")
user=$(whoami)

source "$run_directory/variables.conf"

if [ -f $run_directory/.disabled ]; then
  echo "Installation is disabled. Exiting..."
  exit 0
fi

# NOTE: the handling of init/service manager comes from this discussion:
# https://unix.stackexchange.com/questions/18209/detect-init-system-using-the-shell

if [ -e /run/systemd/system ]; then # service manager is Systemd
  echo "Copying Systemd units to system directory..."
  if [[ $user != 'root' ]]; then
    sudo cp systemd-templates/conf-sync.service /etc/systemd/system/
    sudo sed -i -e "s/PH_USER/$(whoami)/g" /etc/systemd/system/conf-sync.service
    sudo sed -i -e "s:PH_DIRECTORY:$(pwd):g" /etc/systemd/system/conf-sync.service
    if $client_type == "server"; then
      sudo cp systemd-templates/conf-sync-server.timer /etc/systemd/system/conf-sync.timer
    else
      sudo cp systemd-templates/conf-sync-desktop.timer /etc/systemd/system/conf-sync.timer
    fi
  else
    cp systemd-templates/conf-sync.service /etc/systemd/system/
    sed -i -e "s/PH_USER/$(whoami)/g" /etc/systemd/system/conf-sync.service
    sed -i -e "s:PH_DIRECTORY:$(pwd):g" /etc/systemd/system/conf-sync.service
    if $client_type == "server"; then
      cp systemd-templates/conf-sync-server.timer /etc/systemd/system/conf-sync.timer
    else
      cp systemd-templates/conf-sync-desktop.timer /etc/systemd/system/conf-sync.timer
    fi
  fi
  echo "Reloading Systemd..."
  if [[ $user != 'root' ]]; then
    sudo systemctl daemon-reload
  else
    systemctl daemon-reload
  fi
  echo "Enabling timer (not starting it, either do it manually or reboot)..."
  if [[ $user != 'root' ]]; then
    sudo systemctl enable conf-sync.timer
  else
    systemctl enable conf-sync.timer
  fi
elif [ "$(uname)" = "OpenBSD" ]; then
  echo "ERROR: OpenBSD is not yet supported, but this is planned."
  exit 0
else
  echo "ERROR: could not determine a supported system. Exiting."
  exit 1
fi

echo "Finished install. Exiting..."
exit 0