class UsersController < ApplicationController
  # before_action :require_user, except: [:index]
  # before_action :user_signed_in?, except: [:index]
  # before_action :verify_authenticity_token
  require 'open3'

   def index
     @ip = request.remote_ip
     if user_signed_in?
       cmd = "/etc/omapi/dhcp-show-lease.sh #{@ip}"
       result = run_cmd(cmd)
       @ends = result[:ends]
       @starts = result[:starts]
       render 'show_lease'
     else
       render 'index'
     end
   end

   def normal_dns
     ip = request.remote_ip
     cmd = "/etc/omapi/dhcp-normal-dns.sh #{ip}"
     run_cmd(cmd)
     redirect_to root_url
   end

  private

  def run_cmd(cmd)
    result = { ip: nil, mac: nil, starts: nil, ends: nil }
    output = ''
    Open3.popen2e(cmd) do |_stdin, stdout_err, wait_thr|
      while line = stdout_err.gets
        output += line
        tmp = line.split(': ')
        result[tmp[0].to_sym] = tmp[1].delete("\n") if result.key? tmp[0].to_sym
      end
      exit_status = wait_thr.value
      if exit_status.success?
        flash[:success] = "Η εντολή '#{ cmd }'εκτελέστηκε κανονικά το trace είναι: \n #{output}"
      else
        flash[:error] = "Υπήρξε πρόβλημα με την εκτέλεση της εντολής '#{ cmd }', ο κωδικός σφάλματος είναι #{exit_status} και το trace είναι: \n #{output}"
      end
      logger.debug "output: #{output}"
      return result
    end
  end
end