.manage_add

#!/usr/bin/env bash

function usage() {
  echo "Usage: $SCRIPT add [-h|--help] [-a|--add | -s|--set | -r|--remove] {configs...}"
  # if $1 is non empty, print long usage
  if [ -z "$1" ]; then return; fi
  echo "Add configs to the current host. At least one should be provided."
  echo ""
  echo "Options:"
  echo "    -a, --add           Add configs to the current set (default behavior)"
  echo "    -s, --set           Set configs as the new current set, instead of"
  echo "                        adding them to the current set"
  echo "    -r, --remove        Remove configs of the current set, instead of"
  echo "                        adding them to the current set"
  echo "    -Q, --super-quiet   Suppress almost all output"
  echo "    -q, --quiet         Suppress most output"
  echo "    -v, --verbose       Enable verbose output"
  echo "    -h, --help          Display this message"
  echo ""
  echo "Note: Removing a config won't uninstall it. This is not currently"
  echo "      supported by the script."
}

function run() {
  # parse arguments
  local action="a"
  local verbose=""
  local -a configs
  while [ -n "$1" ]; do
    case "$1" in
      -h | --help)
        usage long
        return;;
      -a | --add)
        action="a"
        shift;;
      -s | --set)
        action="s"
        shift;;
      -r | --remove)
        action="r"
        shift;;
      -q | --quiet | -Q | --super-quiet | -v | --verbose)
        verbose="$1"
        shift;;
      --* )
        echo "$SCRIPT: invalid option: ${1:2}" >&2
        usage
        return 1;;
      -* )
        echo "$SCRIPT: invalid option: ${1:1}" >&2
        usage
        return 1;;
      * )
        configs+=("$1")
        shift;;
    esac
  done

  # ensure configs are given
  if [[ ${#configs[@]} == 0 ]]; then
    usage long
    return 1
  fi

  # update current host
  local -a to_load
  case "$action" in
    s|a)
      if [[ "$action" == "s" ]]; then clear_current_host; fi
      for config in "${configs[@]}"; do
        if config_exists "$config"; then
          add_current_host "$config"
          to_load+=("$config")
        else
          echo "[${_ERR_RED}!${_ERR_RST}] Unknown config '$config'" >&2
          return 1
        fi
      done;;
    r)
      for config in "${configs[@]}"; do
        remove_current_host "$config"
      done;;
  esac
  # save new current host
  save_current_host

  # load new configs
  if ! install_all_configs to_load "$verbose"; then
    return 1
  fi
}