require 'net/ssh'
require 'pathname'
require 'json'
namespace :create_site do
  desc "Change Site Server Name"
  task :change_site_server_name,[:id,:server_name,:port] => :environment do |task,args|
    begin
      @site_construct = SiteConstruct.find(args.id)
      site_server = @site_construct.site_server
      if !site_server.nil?
        @password = site_server.password
        update_infos("Starting change domain name and ports.")
        Net::SSH.start(site_server.ip , site_server.account , password: site_server.password) do |ssh|
          @site_construct.update(:domain_name=>args.server_name)
          update_infos("Reading setting file.")
          nginx_file_content = exec_command_by_user(ssh,"cat #{@site_construct.nginx_file}")
          if args.port.present?
            all_ports = args.port.split('////')
            @site_construct.update(:port=> all_ports )
          end
          nginx_file_content = @site_construct.generate_nginx_text(nginx_file_content)
          update_infos("Writing...")
          cmd = "x='#{nginx_file_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{@site_construct.nginx_file}\""
          exec_command_by_user(ssh,cmd)
          exec_ssh_command_by_sudo(ssh,"service nginx restart")
          update_infos("Finish!")
          @site_construct.update(:status=>'finish')
        end
      end
    rescue => e
      update_infos(e.to_s)
      @site_construct.update(:status=>'error')
      puts [e,e.backtrace]
    end
  end
  def exec_command_by_user(session,command)
    output = session.exec!(command)
    return output[0...-1].gsub(/^\n[\n]+/,'')
  end
  def exec_ssh_command_by_sudo(session,command)
    output = session.exec!("echo '#{@password}' | sudo -S #{command}")
    if output.include?("sudo:") && output.include?("command not found")
      output = session.exec!(command)
    end
    return output
  end
end