#! /bin/sh
#
# punani - filesystem scienteer
#
# Engineering Operations
# -E -i spec    insert a package to the target filesystem
# -E -r spec    remove a package
#

godmode() {
  if test "${nosudo-false}" != true -a `id -u` != 0; then
    echo "Warning: we require god mode..." >&2
    exec sudo "$0" "$@"
    exit 23 # go to hell
  fi
}

if pacman --version 2>/dev/null | fgrep -q Pacman; then
  system="${system+$system, }arch-like"
fi

case "$system" in
  (*arch-like*)
    punani_Engineer_insert() {
      pacman -Sy "$1"
    }
    punani_Engineer_remove() {
      pacman -Rcs "$1"
    }
  ;;
  (*)
    email='krebs@syntax-fehler.de'
    irc_host='irc.freenode.org'
    irc_channel='#tincspasm'
    cat>&2<<EOF
Error 2: Your System Will Be Supported ASAP
1. send us a bug report
1.1 your operating system's name and version
1.2 this message: $0 $*
1.3 mailto:$email
2. join the relevant IRC channel
2.1 /connect $irc_host
2.2 /join $irc_channel
EOF
    exit 23
esac

punani() {
  ns=punani
  role=undefined
  while getopts 'fhvSopEir' OPT; do
    case $OPT in
      (f) force=true; continue;;
      (h) hard=true; continue;;
      (v) verbose=true; continue;;
    esac
    case ${role-Manager} in
      (Engineer)
        case $OPT in
          (i) command="${ns}_${role}_insert";;
          (r) command="${ns}_${role}_remove";;
          (*)
            echo 'Error 1: You are made of stupid!' >&2
            exit 23;;
        esac
      ;;
      (undefined)
        case $OPT in
          (E) role=Engineer;;
          (*)
            exit 23;;
        esac
      ;;
      (*)
        echo 'Error 1: You are made of stupid!' >&2
        exit 23
      ;;
    esac
  done
}

punani "$@"
shift `echo $OPTIND-1 | bc`

case $role in
  (Engineer) godmode;;
esac
for name; do
  "$command" "$name"
done