#!/usr/bin/env bash

. "$GVM_ROOT/scripts/functions"

function show_usage() {
  echo "Usage: gvm pkgenv [packageset-name]"
  echo
  echo "       -h, --help   Display this message."
  echo "       -o, --output Write content to stdout"
  echo
  echo "The [packageset-name] is optional."
  echo
}

for i in "$@"; do
  case $i in
    -h|--help*)
      show_usage
      exit 0
    ;;
    -o|--output*)
      output=true
    ;;
    *)
      gvm_env="$i"
    ;;
  esac
done

if [ -z "$gvm_go_name" ]; then
  display_fatal "current go version not managed by gvm"
fi

if [ ! -z "$gvm_env" ]; then
  gvm_env="@$gvm_env"
fi

env_file=$GVM_ROOT/environments/$gvm_go_name$gvm_env

if [ $output ]; then
    cat "$env_file"
    exit 0
fi

${EDITOR:-vi} "$env_file"