#!/usr/bin/env sh

# This is a wrapper script, that automatically download ammonite from GitHub release pages

# You can give the required mill version with AMM_VERSION env variable

# If no version is given, it falls back to the value of DEFAULT_AMM_VERSION

DEFAULT_AMM_VERSION=2.3.8

set -e

if [ -z "$AMM_VERSION" ] ; then

  AMM_VERSION=$DEFAULT_AMM_VERSION

fi

AMM_DOWNLOAD_PATH="$HOME/.ammonite/download"

AMM_EXEC_PATH="${AMM_DOWNLOAD_PATH}/$AMM_VERSION"

if [ ! -x "$AMM_EXEC_PATH" ] ; then

  mkdir -p $AMM_DOWNLOAD_PATH

  DOWNLOAD_FILE=$AMM_EXEC_PATH-tmp-download

  AMM_DOWNLOAD_URL="https://github.com/lihaoyi/ammonite/releases/download/${AMM_VERSION%%-*}/2.13-$AMM_VERSION"

  curl --fail -L -o "$DOWNLOAD_FILE" "$AMM_DOWNLOAD_URL"

  chmod +x "$DOWNLOAD_FILE"

  mv "$DOWNLOAD_FILE" "$AMM_EXEC_PATH"

  unset DOWNLOAD_FILE

  unset AMM_DOWNLOAD_URL

fi

unset AMM_DOWNLOAD_PATH

unset AMM_VERSION

exec $AMM_EXEC_PATH "$@"