# Version: 0.3.5
# Copyright (c) 2005-2022:
#   Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
# Licensed under the terms of the GNU General Public License version 3.

install_file() {
  # $1 = Path of file to process (without leading /, with .new extension)

  [[ -z "$1" ]] || [[ ! -e "$1" ]] && return
  local OLDFILE="${1%.new}"

  if [[ ! -e "$OLDFILE" ]]; then
    mv "$1" "$OLDFILE"
  elif [[ -L "$OLDFILE" ]]; then
    #     |--------|-----------------------------------------------------------|
    echo "WARNING: $OLDFILE"
    echo "         is a symbolic link - the incoming .new file was not written"
    echo "         to it in order to prevent clobbering something important."
    echo
  elif [[ "$(md5sum <"$OLDFILE")" == "$(md5sum <"$1")" ]]; then
    rm -f "$1"
  else
    #     |--------|-----------------------------------------------------------|
    echo "WARNING: $OLDFILE"
    echo "         has been customised since original installation and was not"
    echo "         replaced with the incoming .new file."
    echo
  fi
}

# Install new configuration files.
install_file "etc/logrotate.d/glusterfs.new"