uninstall

#!/usr/bin/env bash

print_in_color() {
  local color="$1"
  shift
  if [[ -z ${NO_COLOR+x} ]]; then
    printf "$color%b\e[0m\n" "$*"
  else
    printf "%b\n" "$*"
  fi
}

red() { print_in_color "\e[31m" "$*"; }
green() { print_in_color "\e[32m" "$*"; }
green_bold() { print_in_color "\e[1;32m" "$*"; }
blue() { print_in_color "\e[34m" "$*"; }

section() {
  printf "\n=== %s\n" "$(green_bold "$@")"
}

command_exist() {
  [[ -x "$(command -v "$1")" ]]
}

rm_executable() {
  if [[ -z "$1" ]]; then return; fi

  printf "%s %s\n" "$(blue rm)" "$1"
  $sudo rm -f "/usr/local/bin/$1"

  if command_exist "$1"; then
    fail "Command $1 still exists"
  fi
}

rm_man() {
  if [[ ! -d "/usr/local/share/man/man1/" ]]; then return; fi
  if [[ -z "$1" ]]; then return; fi

  printf "%s %s\n" "$(blue rm)" "/usr/local/share/man/man1/$1*.1"
  $sudo rm -f /usr/local/share/man/man1/"$1"*.1

  printf "%s %s\n" "$(blue rm)" "/usr/local/share/man/man5/$1*.5"
  $sudo rm -f /usr/local/share/man/man5/"$1"*.5

  if command_exist makewhatis; then
    $sudo makewhatis /usr/local/man
  fi
}

onerror() {
  local exit_status=$?
  printf "\n=== %s\n" "$(red "Aborted with exit status $exit_status")"
  exit $exit_status
}

fail() {
  printf "$(red 'ERR') %s\n" "$*"
  return 1
}

initialize() {
  set -e
  trap 'onerror' ERR

  # Figure out if we need sudo or not
  sudo=''
  if [[ $EUID -ne 0 ]]; then
    sudo='sudo'
  fi
}

initialize

section "Removing files"
rm_executable 'alf'
rm_man 'alf'

section "Done"