version_command() {
  local cmd=$1
  local plugin=$2

  if [ "$#" -lt "3" ]; then
    echo "Usage: asdf $cmd <name> <version>"
    exit 1
  fi

  shift 2
  local versions=$@

  local file
  if [ $cmd = "global" ]; then
    file=$HOME/.tool-versions
  else
    file=$(pwd)/.tool-versions
  fi

  check_if_plugin_exists $plugin
  for version in $versions; do
    check_if_version_exists $plugin $version
  done

  if [ -f "$file" ] && grep $plugin "$file" > /dev/null; then
    sed -i -e "s/$plugin .*/$plugin $versions/" "$file"
  else
    echo "$plugin $versions" >> "$file"
  fi
}

local_command() {
  version_command "local" $@
}

global_command() {
  version_command "global" $@
}