#!/bin/bash
set -e

script_dir=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )

localdir="$script_dir/local"
test $# -eq 1 && localdir="$1"

cd "$script_dir/.."

function download_extract_martools {
  make submodule-update > /dev/null
  martools_version=$(./rbm/rbm showconf --step fetch_martools mar-tools version)
  if test -h "$localdir/mar-tools"; then
    test "$(readlink $localdir/mar-tools)" = "mar-tools-$martools_version" && return 0
    rm -f "$localdir/mar-tools"
  fi
  if test -d "$localdir/mar-tools"; then
    echo "Error: $localdir/mar-tools already exists and is not a symlink"
    exit 1
  fi
  echo "Setting up mar-tools"
  mkdir -p "$localdir"
  cd "$localdir"
  if ! test -d "mar-tools-$martools_version"; then
    cd "$script_dir/.."
    ./rbm/rbm build --step fetch_martools mar-tools
    martools_zip="$(pwd)/out/mar-tools/mar-tools.zip"
    cd "$localdir"
    test -f "$martools_zip"
    unzip -jd "mar-tools-$martools_version" "$martools_zip"
  fi
  ln -sf "mar-tools-$martools_version" mar-tools
  echo "mar-tools have been set up in $localdir/mar-tools"
}

function print_martools_vars {
  mardir="$localdir/mar-tools"
  if test -z "$LD_LIBRARY_PATH"; then
    echo "export LD_LIBRARY_PATH=$mardir"
  else
    echo "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$mardir"
  fi
  echo "export MARTOOLSDIR=$mardir"
  echo "export MAR=$mardir/mar"
}

download_extract_martools >&2
print_martools_vars