bootstrap

#!/bin/sh
#
# Interactive Q&A shell script to setup a new system.

set -e

red="\e[0;31m"
green="\e[0;32m"
yellow="\e[0;33m"
blue="\e[0;34m"
magenta="\e[0;35m"
cyan="\e[0;36m"
reset="\e[0;0m"

colorize() {
  printf "$cyan>>>$reset %s" "$*" 1>&2
}

# Make experience more pleasant.
log() {
  colorize "$*"
  printf "\n"
}

# Make experience more pleasant.
ask() {
  colorize "$*"
  printf "$green (y)es $reset" 1>&2
  printf "/"
  printf "$yellow (n)o $reset" 1>&2
  printf "/"
  printf "$red (q)uit $reset" 1>&2
  IFS= read -s -n 1 action
  case "$action" in
    y)
      printf "\n"
      return 0
      ;;
    n)
      printf "\n"
      return 1
      ;;
    *)
      exit 1
      ;;
  esac
}

# Keeps sudo priviledge alive throughout the execution of this script.
enter_sudo_mode() {
  if ! sudo -n true 2> /dev/null; then
    log "please enter your password to maintain a sudo session"
    sudo -v
    while true; do
      sudo -n true
      sleep 60
      kill -0 "$$" || exit
    done 2>/dev/null &
  fi
}
# MacOS-specific system changes.
setup_darwin() {
  # Close any open System Preferences panes, to prevent them from
  # overriding settings we're about to change.
  log "closing System Preferences"
  osascript -e 'tell application "System Preferences" to quit'
  enter_sudo_mode
  log "tuning macOS settings"
  . bootstrap.macos
  log "installing all available software updates"
  sudo softwareupdate -i -a
  log "installing XCode comand line developer tools"
  xcode-select --install || true
}

setup_keyboard_layout() {
  enter_sudo_mode
  log "copying custom layout to /Library/Keyboard Layouts"
  sudo cp mavam.keylayout /Library/Keyboard\ Layouts/
  log "enable the new keyboard:"
  log "  (1) System Preferences → Keyboard → Input Sources"
  log "  (2) Search and select 'mavam'"
  log "remap Caps Lock with Karabiner Elements:"
  log "  (1) Escape: when tapped"
  log "  (2) Left Alt: when held"
}

setup_homebrew() {
  # Make sure we look at least in the default install location.
  if which brew > /dev/null 2>&1; then
    log "upgrading existing Homebrew packages"
    brew upgrade
  else
    log "installing Homebrew"
    homebrew="Homebrew/install/HEAD/install.sh"
    /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/$homebrew)"
  fi
}

setup_tmux() {
  if [ ! -d ~/.tmux/plugins/tpm ]; then
    log "installing Tmux plugins"
    git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
    ~/.tmux/plugins/tpm/bin/install_plugins
  else
    log "updating Tmux plugins"
    ~/.tmux/plugins/tpm/bin/update_plugins all
  fi
}

setup_neovim() {
  log "updating NeoVim plugins via Packer"
  nvim --headless -c "autocmd User PackerComplete quitall" -c "PackerSync"
}

setup_fish() {
  fish=$(which fish 2> /dev/null)
  if [ -z "$fish" ]; then
    log "fish not found :-("
  else
    if grep -Fq "$fish" /etc/shells; then
      log "skipping /etc/shells, $fish already there"
    else
      log "adding $fish to /etc/shells"
      echo "$fish" | sudo tee -a /etc/shells > /dev/null
    fi
    log "setting fish as login shell"
    login_shell="$(dscl . -read ~ UserShell | cut -f 2 -d " ")"
    if [ "$login_shell" = "$fish" ]; then
      log "$fish is already your login shell"
    else
      sudo chsh -s "$fish" "$USER"
    fi
    if which fisher 2> /dev/null; then
      log "updating fish plugins via fisher"
      fisher update
    fi
  fi
}

main() {
  export PATH="/opt/homebrew/bin:$PATH"
  printf "$blue"
  echo '                __                        '
  echo ' _      _____  / /________  ____ ___  ___ '
  echo '| | /| / / _ \/ / ___/ __ \/ __ `__ \/ _ \'
  echo '| |/ |/ /  __/ / /__/ /_/ / / / / / /  __/'
  echo '|__/|__/\___/_/\___/\____/_/ /_/ /_/\___/ '
  echo
  printf "$reset"
  if ask "setup dotfiles?"; then
    sh "$(dirname "$0")/dots" install -a
  fi
  case "$(uname -s)" in
    Darwin)
      if ask "setup homebrew?"; then
        setup_homebrew
      fi
      if ask "install Hombrew bundle?"; then
        log "installing bundled Homebrew packages"
        brew bundle "--file=$(dirname "$0")/homebrew/.Brewfile" || true
      fi
      if ask "tune macOS system settings?"; then
        setup_darwin
      fi
      if ask "install keyboard layout?"; then
        setup_keyboard_layout
      fi
      ;;
  esac
  if ask "setup fish?"; then
    setup_fish
  fi
  if ask "setup NeoVim?"; then
    setup_neovim
  fi
  if ask "setup Tmux?"; then
    setup_tmux
  fi
}

main "$@"