#!/bin/sh
# =================================================== #
# lliurex-cdd-version                                 #
#                                                     #
# Escrito por Luis García <garcia_luigis@gva.es>      #
# para LliureX. Abril 2006                            #
#                                                     #
#    Devuelve la version de LliureX instalada         #
# =================================================== #
#

set -e

# variables
CDD_PATH="/usr/share/lliurex-cdd"
CDD_TASKS_PATH="${CDD_PATH}/tasks"
CDD_TASKS_LIST="classroom-srv classroom-ws desktop"
CDD_NUMVERSION=""
CDD_VERSION="Unknown LliureX version"
RAW_CDD_VERSION=""

#funciones
usage(){
   echo "Usage: $0 {-n|-v|-a|-h}" >&2
   echo "       $0 -t CDD_NAME" >&2
}

get_cdd_version(){
   local CTASK VERSION_FILE
   VERSION_FILE="${CDD_PATH}/version"
   if [ -r "$VERSION_FILE" ] ; then
      CDD_NUMVERSION="$(head -1 "${VERSION_FILE}")"
      RAW_CDD_VERSION="$(find "${CDD_PATH}" -name "cddversion" -exec cat {} \; |sort -u)"
      if [ "$RAW_CDD_VERSION" ] ; then
         CDD_VERSION="$(echo "${RAW_CDD_VERSION}" |tr "\n" "," |sed -e "s%[[:blank:]]*$%%;s%,$%%;s%,%, %g")"
      fi
   fi
   return 0
}

say_cdd_version(){
   get_cdd_version
   if [ -z "$CDD_NUMVERSION" ] ; then
      echo "${CDD_VERSION}" >&2
      return 0
   fi
   case "$1" in
      n)
         echo "${CDD_NUMVERSION}"
         ;;
      v)
         echo "${CDD_VERSION}"
         ;;
      a)
         echo "${CDD_VERSION} ${CDD_NUMVERSION}"
         ;;
   esac
   return 0
}

test_cdd_version(){
   get_cdd_version
   if [ "$RAW_CDD_VERSION" ] ; then
      if echo "$RAW_CDD_VERSION" |grep -q "^${1}$" ; then
         return 0
      fi
   fi
   return 1
}


case "$1" in
   "-h"|"--help")
      usage
      ;;
   "-n"|"--number")
      say_cdd_version n
      ;;
   "-v"|"--version")
      say_cdd_version v
      ;;
   "-t"|"--test")
      [ "$2" ] || exit 1
      test_cdd_version "$2" || exit 1
      ;;
   *)
      say_cdd_version a
      ;;
esac

exit 0