#!/bin/bash

set -e

show_usage() {
  echo "usage: $0 [-h] [-y]"
}

show_help() {
  show_usage
  echo
  echo "Bootstrap a macOS instance with:"
  echo
  echo "* Install xcode command line developer tools"
  echo "* Install homebrew"
  echo "* Update packages"
  echo "* Install python, pip"
  echo "* Install ansible"
  echo "* Clone configuration repository"
  echo "* Install 1password"
  echo
  echo "If any already exist they will not be reinstalled."
  echo
  echo "optional arguments:"
  echo "        -h              show this help message and exit"
  echo "        -y              assume yes when prompted"
}

yes=0

while getopts 'hy' opt; do
  case $opt in
    h) show_help; exit 0 ;;
    y) yes=1 ;;
    *) show_usage; exit 1 ;;
  esac
done

missing() {
  which $1 &> /dev/null && return 1 || return 0
}

agree() {
  local check=^[Nn]$
  [ $yes -eq 1 ] && [[ ! "$2" =~ $check ]] && return 0
  [[ "$2" =~ $check ]] && local default="[y/N]" || local default="[Y/n]"
  read -p "$1 $default? " answer
  case "$answer" in
    y|Y|yes) return 0 ;;
    n|N|no) return 1 ;;
    '') [[ "$2" =~ $check ]] && return 1 || return 0 ;;
    *) echo "invalid input: $answer" && return `agree "$1"` ;;
  esac
}

export PATH=~/.local/bin:$PATH
export PYTHONUSERBASE=~/.local

if ! xcode-select --print-path &> /dev/null; then
  agree "Install Xcode command line developer tools" && xcode-select --install
fi

missing brew && agree "Install homebrew" && /usr/bin/ruby -e \
  "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

agree "Update homebrew packages" && brew update
brew install python

# TODO: Update PATH for pip?

echo "Install ansible"
pip install --user --break-system-packages ansible jmespath

if [ ! -d ~/.config/local ]; then
  echo "Clone configuration repository"
  git clone https://git.infektor.net/config/local.git ~/.config/local
fi

agree "Install 1password" && \
  ~/.local/bin/ansible-playbook ~/.config/local/playbooks/1password.yaml

[ -f $0 ] && agree "Remove $0" "N" && rm $0 || exit 0