module AwsBlueGreenDeploy

# File lib/aws_blue_green_deploy.rb, line 26
def self.config
  @config
end

# File lib/aws_blue_green_deploy.rb, line 10
def self.configure(opts = {})
  opts.each {|k,v| @config[k.to_sym] = v}
end

# File lib/aws_blue_green_deploy.rb, line 15
def self.configure_with(path_to_json_file)
  begin
    config = JSON.parse(IO.read(path_to_json_file), {:symbolize_names => true})
  rescue Errno::ENOENT
    log(:warning, "JSON configuration file couldn't be found. Using defaults."); return
  end

  configure(config)
  "Loaded Config Successfully"
end

# File lib/aws_blue_green_deploy.rb, line 30
def self.enact_deployment
  auth_options = {:access_key_id => config[:access_key_id], :secret_access_key => config[:secret_access_key], :session_token => config[:session_token], :region => config[:region]}
  as_controller = AWS::AutoScaling.new(auth_options)
  lb_controller = AWS::ELB.new(auth_options)
  dc = DeployController.new(as_controller, lb_controller)

  elb_name = config[:elb_name]
  asg_size = config[:asg_size].to_i
  lc_name = config[:lc_name]
  lc_image = config[:lc_image]
  lc_instance_type = config[:lc_instance_type]
  lc_key_pair = config[:lc_key_pair]
  lc_security_groups = config[:lc_security_groups]
  lc_user_data = config[:lc_user_data]

  lc = dc.create_new_launch_config(lc_name, lc_image, lc_instance_type, lc_key_pair, lc_security_groups, lc_user_data)
  puts "Created Launch Config: #{lc.name}"
  oor_groups = dc.out_rotation_groups(elb_name)
  puts "Out of rotation ASG: #{oor_groups.each{|group| group.name + " "}}"
  ir_groups = dc.in_rotation_groups(elb_name)
  puts "In rotation ASG: #{ir_groups.each{|group| group.name + " "}}"
  dc.update_groups_lc_and_scale_up(oor_groups, lc, asg_size)
  puts "Scaled up #{oor_groups.each{|group| group.name + " "}} to #{asg_size} instances with new launch config}"
  dc.rotate_groups(ir_groups, elb_name)
  puts "Removed #{ir_groups.each{|group| group.name + " "}}  instances from load balancer."
end