#!/usr/bin/env zsh

set -e

: "${1:=--help}"

case "$1" in
  -h|--help|help)
    cat <<EOF
Usage:
  $ label [add | get | rm | ls]

Set, list or manipulate configured labeles.
Note: the words 'help' and 'ls' among others are reserved, and cannot be labeled.
EOF
    ;;

  add)
    label rm "$2"
    _zsh_goto_sed -i '/^$/d' "$(_goto_file)" # Remove empty lines
    _zsh_goto_sed -i -e '$a\' "$(_goto_file)" # Fix potentially missing last newline
    printf '%s %s\n' "${2}" $(realpath "${3:-$PWD}" | _zsh_goto_sed "s^${HOME}^~^g") >> "$(_goto_file)"
    ;;

  get)
    realpath "$(_awk "/^$2\s/ {print \$2;exit}" `_goto_file` | _zsh_goto_sed "s|^~|$HOME|")"
    ;;

  rm)
    _zsh_goto_sed -i "/$2/d" "$(_goto_file)"
    ;;

  ls)
    _awk '{print $1;}' "$(_goto_file)"
    ;;

  *)
    echo "Unknown command: $@" >&2
    exit 1
    ;;
esac