require 'trollop'

module SimpleDeploy
  module CLI

    class Deploy
      include Shared

      def deploy
        @opts = Trollop::options do
          version SimpleDeploy::VERSION
          banner <<-EOS

Execute deployment on given stack(s).

simple_deploy deploy -n STACK_NAME -n STACK_NAME -e ENVIRONMENT

Using SSH:

Simple deploy defaults your user and key for SSH to your username and your id_rsa key.

If you need to override these because you want to use a different username or you have a different key file,
you can set simple deploy specific environment variables to do the override.

Example 1: Overriding when the command is run.
SIMPLE_DEPLOY_SSH_USER=fred SIMPLE_DEPLOY_SSH_KEY=$HOME/.ssh/id_dsa simple_deploy deploy -n STACK_NAME -n STACK_NAME -e ENVIRONMENT

Example 2: Overriding them in your shell environment (bash shell used in the example).
export SIMPLE_DEPLOY_SSH_USER=fred
export SIMPLE_DEPLOY_SSH_KEY=$HOME/.ssh/id_dsa
simple_deploy deploy -n STACK_NAME -n STACK_NAME -e ENVIRONMENT

Using Internal / External IP for SSH:

simple_deploy defaults to using the public IP when ssh'ng to stacks in classic, or the private IP when in a VPC.

The internal or external flag forces simple_deploy to use the given IP address.

simple_deploy deploy -n STACK_NAME -n STACK_NAME -e ENVIRONMENT -i

EOS
          opt :help, "Display Help"
          opt :attributes, "= seperated attribute and it's value", :type  => :string,
                                                                   :multi => true
          opt :environment, "Set the target environment", :type => :string
          opt :force, "Force a deployment to proceed"
          opt :log_level, "Log level:  debug, info, warn, error", :type    => :string,
                                                                  :default => 'info'
          opt :name, "Stack name(s) of stack to deploy", :type => :string,
                                                         :multi => true
          opt :quiet, "Quiet, do not send notifications"
          opt :read_from_env, "Read credentials and region from environment variables"
          opt :external, "Use external IP for ssh commands"
          opt :internal, "Use internal IP for ssh commands"
        end

        valid_options? :provided => @opts,
                       :required => [:environment, :name, :read_from_env]

        config_arg = @opts[:read_from_env] ? :read_from_env : @opts[:environment]
        SimpleDeploy.create_config config_arg
        logger = SimpleDeploy.logger @opts[:log_level]

        new_attributes = parse_attributes :attributes => @opts[:attributes]

        @opts[:name].each do |name|
          notifier = Notifier.new :stack_name  => name,
                                  :environment => @opts[:environment]

         stack = Stack.new :name        => name,
                           :environment => @opts[:environment],
                           :external    => @opts[:external],
                           :internal    => @opts[:internal]

          proceed = true

          if new_attributes.any?
            rescue_exceptions_and_exit do
              proceed = stack.update :force      => @opts[:force], 
                                     :attributes => new_attributes
            end
          end

          stack.wait_for_stable

          if proceed
            notifier.send_deployment_start_message unless @opts[:quiet]

            result = stack.deploy @opts[:force]

            if result
              notifier.send_deployment_complete_message unless @opts[:quiet]
            else
              logger.error "Deployment to #{name} did not complete successfully."
              exit 1
            end
          else
            logger.error "Update of #{name} did not complete successfully."
            exit 1
          end

        end
      end

      def command_summary
        'Execute deployment on given stack(s)'
      end

    end

  end
end
