module CapistranoDeployManagement
  module Unicorn
    def self.load_into(configuration)
      configuration.load do
	set(:unicorn_config) { "#{deploy_to}/current/config/unicorn.rb" }
        set(:unicorn_pidfile) { "#{deploy_to}/shared/pids/unicorn.pid" }

        namespace :unicorn do
          desc 'Reload unicorn'
          task :reload, :roles => :app, :except => {:no_release => true} do
            run "test -s #{unicorn_pidfile} && kill -s USR2 `cat #{unicorn_pidfile}` || echo 'pidfile does not exist'"
          end

          desc 'Stop unicorn'
          task :stop, :roles => :app, :except => {:no_release => true} do
            run "test -s #{unicorn_pidfile} && kill -s QUIT `cat #{unicorn_pidfile}` || echo 'pidfile does not exist'"
          end

          desc 'Reexecute unicorn'
          task :reexec, :roles => :app, :except => {:no_release => true} do
            run "test ! -s #{unicorn_pidfile} && unicorn -c #{unicorn_config} -E production -D || echo 'pidfile already exists'"
          end
        end
      end
    end
  end
end