#!/usr/bin/env ruby
require 'pathname'
require 'fileutils'

# path to your application root.
APP_ROOT = Pathname.new File.expand_path('../../',  __FILE__)


def system!(*args)
  system(*args) || abort("\n== Command #{args} failed ==")
end

def effective_user_id
  uid = `id -u`
  uid.strip!
end

Dir.chdir APP_ROOT do
  puts '== Installing application build deps =='
  sudo_prefix = ''
  sudo_prefix = "sudo" unless effective_user_id == '0'
  system! "#{sudo_prefix} apt-get update && #{sudo_prefix} apt-get -y --no-install-recommends install libxml2 libxml2-dev postgresql-client postgresql-client-common libpq-dev"

  puts "== Installing rbenv ruby manager to #{ENV['HOME']} =="
  unless Dir.exist?("#{ENV['HOME']}/.rbenv/")
    system! 'git clone https://github.com/sstephenson/rbenv.git $HOME/.rbenv'
    system! 'echo export PATH="$HOME/.rbenv/bin:$PATH" >> ~/.bashrc'
    system! "echo 'eval $(rbenv init -)' >> ~/.bashrc"
  end

  unless Dir.exist?("#{ENV['HOME']}/.rbenv/plugins/ruby-build/")
    system! 'git clone https://github.com/sstephenson/ruby-build.git $HOME/.rbenv/plugins/ruby-build'
    system! 'echo export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH" >> ~/.bashrc'
  end
  unless Dir.exist?("#{ENV['HOME']}/.rbenv/plugins/rbenv-default-gems/")
    system! 'git clone https://github.com/rbenv/rbenv-default-gems.git $HOME/.rbenv/plugins/rbenv-default-gems'
    unless File.exist?("#{ENV['HOME']}/.rbenv/default-gems")
      system! 'echo "bundler" > ~/.rbenv/default-gems'
      end
  end

  # Include RBENV in path
  ENV['PATH'] = ENV['HOME'] + "/.rbenv/bin:" + ENV['HOME'] + "/.rbenv/plugins/ruby-build/bin:" + ENV['PATH']
  NEEDED_RUBY_VERSION = `cat .ruby-version`.freeze

  if `!bundle check` == false
    system! "#{SUDO_PREFIX} apt-get -y --no-install-recommends install libreadline-dev"
    puts 'Installing Ruby: ' + NEEDED_RUBY_VERSION
    system!('rbenv install ' + NEEDED_RUBY_VERSION)
    system!('rbenv rehash')
  else
    puts 'Ruby ' + NEEDED_RUBY_VERSION + 'already installed'
  end
  puts 'Now running setup'
  exec('./bin/setup')
end