#!/bin/bash
# Copyright (C) 2016 Ian Kelling

# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

# For using some fai commands outside of fai.
# Usually this is sourced from another script. Note this has
# paths specific to Ian's machine.
# to set fai classes, export CLASS_CLASSNAME=true
ifclass() {
  local var=${1/#/CLASS_}
  [[ $HOSTNAME == $1 || ${!var} ]]
}
fai-setclass() {
  for class in "$@"; do
    # export class vars with CLASS_ in front to avoid name collisions.
    classes+=" $class"
    export CLASS_$class=true
  done
  classes="${classes# }"
  export classes
}
eval-fai-classfile() {
  file=$1
  if [[ ! -s $file ]]; then
    echo "$0: probably an error: eval-fai-classfile no such file: $file"
    return 0
  fi
  fai-setclass $(bash -l $file)
}
export -f ifclass
classes=DEFAULT  # used by fcopy
export CLASS_DEFAULT=true
if [[ ! -d $FAI_ROOT ]]; then
  export FAI_ROOT=/
fi
if [[ ! -d $FAI ]]; then
  if [[ -d /a/bin/fai/fai/config ]]; then
    export FAI=/a/bin/fai/fai/config
  else
    echo "$0: error: could not find directory to set for FAI. currently FAI=$FAI"
    return 1
  fi
fi

eval-fai-classfile $FAI/class/50-host-classes
eval-fai-classfile $FAI/class/51-multi-boot