#!/usr/bin/env ruby

require "optparse"

def sh(cmd, *args)
  puts "$ #{cmd} " + args.map {|a| "'#{a}'" }.join(" ")
  system(cmd, *args) or abort "command failed"
end

options = {}
OptionParser.new do |opts|
  opts.banner = "Usage: lxc-create-container [options]"
  opts.on("-nNAME", "--name=NAME", "container name") do |n|
    options[:name] = n
  end
end.parse!

unless options[:name]
  $stderr.puts "no option for --name supplied"
  exit(1)
end

sh("systemctl", "stop", "lxc-base")
sh("/run/current-system/sw/bin/lxc-copy", "-n", "base", "-B", "zfs", "-N", options[:name])
puts "$ cd /etc/nixos/ansible"
Dir.chdir("/etc/nixos/ansible") do
  sh("nix-shell", "--command", "ansible-playbook -i inventory site.yml --limit #{options[:name]}")
end
sh("lxc-info", "--name", "#{options[:name]}")