#!/usr/bin/env ruby

require 'rubygems'
require 'optparse'
require 'clouddns'

options = {
  :fog => {},
  :force => false
}

option_parser = OptionParser.new do |opts|
  opts.banner = [
    "Usage: #{$0} [OPTIONS] print    FILES  # Pretty print contents of FILES",
    "       #{$0} [OPTIONS] migrate  FILES  # Update DNS servers",
    "       #{$0} [OPTIONS] zonefile FILES  # Print FILES as zone files",
    "",
    ""
  ].join("\n")

  opts.on('-p', '--provider provider', "Override DNS provider (AWS, bluebox, dnsimple, dnsmadeeasy, linode, slicehost, zerigo)") do |provider|
    options[:fog][:provider] = provider
  end

  opts.on('-f', '--force', 'Assume yes to all questions') do
    options[:force] = true
  end

  opts.on('-v', '--version') do
    puts "clouddns v#{Clouddns::VERSION}"
    exit(0)
  end

  opts.on_tail("-h", "--help", "Show this message") do
    puts opts
    exit
  end
end

option_parser.parse!

action = ARGV.slice!(0)
files = ARGV

if !action
  error = "No action specified"
elsif files.empty?
  error = "No files specified"
else
  error = nil
end

if error
  puts error
  puts option_parser
  exit 1
end

action = Clouddns::Actions.by_name(action)

zones = files.map do |file|
  dsl = Clouddns::DSL.parse_file(file)

  dsloptions = {:fog => dsl.fog_options}.merge(options) do |key, oldval, newval|
    oldval.merge(newval)
  end

  dsl.zones.each do |zone|
    action.run(zone, dsloptions)
  end
end