#!/bin/bash
source $HOME/.bwda

# Usage function
usage(){
  echo "Usage: $(basename $0) [opt] [path]"
  echo "Opens an interactive lftp session on bwDataArchive."
  echo " path                     directory on LSDF, session will cd to the corresponding bwda directory"
  echo " -h | --help              display this message"
}

# Get command line argument
nparallel=1
nchannel=1
flag_printcommands=false

POSITIONAL=()
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
    -h|--help)
    usage
    exit 0
    shift
    ;;
    *)
    POSITIONAL+=("$1")
    shift
    ;;
esac
done
set -- "${POSITIONAL[@]}" # restore positional parameters

if [ $# -eq 0 ]; then
  lftp sftp://${bwda_acc}@${bwda_url}
else
  ldir_target="$(realpath $1)"
  # Get current path relative to base
  if [[ $ldir_target == "${ldir_base}"* ]]; then
    dir_target=${ldir_target#"$ldir_base"}
  else
    echo "Target directory is not located on LSDF!"
    echo "Is the base directory setting correct?"
    echo "ldir_base: $ldir_base"
    exit -1
  fi
  rdir_target="${rdir_base}/${dir_target}"
  lftp sftp://${bwda_acc}@${bwda_url} -e "cd $rdir_target"
fi