#!/bin/bash

# Copyright 2016-2018 See AUTHORS file
#
# 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 3 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, see <http://www.gnu.org/licenses/>.

set -e
. /sbin/sabayondevkit-functions.sh

help_msg() {

   echo "
 sabayon-maint-helper:

Script for builder boxes maintenance.

-h|--help        This message.
--installed      Upgrades all the packages installed in the box.
--obsolete       Upgrades ONLY the packages that are listed obsolete in eix-test-obsolete.
--all            Tries to upgrade all package without any euristics
--category       Tries to upgrade/install all the packages in the specified category
                 e.g. sabayon-maint-helper 'app-office'

Some options could be set also as environment variables:
EMERGE_DEFAULT_ARGS     Default emerge options

NOTE: This script MUST be execute as root.
"
}


parse_args() {

   local short_opts="h"
   local long_opts="help arch: host-arch: unprivileged stagingdir: image-descr: image:"

   $(set -- $(getopt -u -q -a -o "$short_opts" -l "$long_opts" -- "$@"))

   while [ $# -gt 0 ] ; do
      case "$1" in

         -h|--help)
            help_msg
            exit 1
            ;;
         --installed)
            echo "Trying to upgrade all the installed packages"
            rebuild_all
            ;;
         --obsolete)
            echo "Upgrading the packages that are marked as obsolete"
            build_obsolete
            ;;
         --all)
            echo "Upgrading/Installing everything available to install"
            build_all_availables
            ;;
         --category)
            echo "Upgrading/Installing everything inside the '$2' category"
            build_category_installed "$2"
            shift
            ;;
         --)
            help_msg
            exit 1
            ;;
         *)
            echo "Invalid parameter $1."
            exit 1
            ;;

      esac

      shift
   done

   return 0
}

main() {

  if [ "$(id -u)" != "0" ]; then
     echo "This script must be run as root" 1>&2
     exit 1
  fi

  [ -z "$@" ] && help_msg && exit 1

  (
    echo "Acquiring lock"
    flock -x -w 10 200 || ( echo "Failed acquiring lock in 10 seconds" && exit 1 )

    parse_args "$@"

  ) 200>/var/lock/.repomaint

}

main "$@"