#!/bin/bash
# to be sourced (below) not run in subshell!

function network_dirs () {

  (return 0 2>/dev/null) || (echo network_dirs must be sourced; return 1)
  
  module_load path 
  [[ $? -ne 0 ]] && echo unable to access the file module, aboarting load && return 1

  [[ ! $1 ]] && return 1
  local networks; 
  networks=$1
  [[ -f $1 ]] && networks=$(cat $1 | tr -s "\n" " ")
  for network in $networks; 
  # while read -r network || [ -n "$network" ]
   do
     if [[ ${network} = *!* ]]; then 
     network=${network/!/}
     BASH_NETWORK_HOME=$network
    fi
    [[ $2 ]] && network=$2/$network
    if [[ $(isAbsPath $network) ]]; then
     [[ ! -d $network ]] && continue
     else 
       if [[ -d ${HOME}/${BASH_SHELL_USER}/${network} ]];then 
      network=${HOME}/${BASH_SHELL_USER}/${network}
      else 
      if [[ -d ${BASH_NETWORKS_DIR}/${network} ]];then 
        network=${BASH_NETWORKS_DIR}/${network}
        else 
        continue
       fi 
      fi  
    fi
    [[ $network =~ $NETWORK_HOME ]] && BASH_NETWORK_HOME_DIR=${network}
    # echo adding $network to list of networks
    BASH_SHELL_NETWORK_DIRS+="${network} "
  done  
  # done < "$1"
  # echo after network-dirs $1 
  # echo DIRS: $BASH_SHELL_NETWORK_DIRS

  export BASH_NETWORK_HOME
  export BASH_NETWORK_HOME_DIR
  export BASH_SHELL_NETWORK_DIRS

}