require 'net/ldap'
require 'yaml'

class LdapUserChecker
  def config
    config ||= YAML.load_file("ldap-config.yaml")
  end

  def ldap
    ldap ||= Net::LDAP.new :host => config['ldap']['server'],
      :port => config['ldap']['port'],
      :auth => {
        :username => config['ldap']['username'],
        :password => config['ldap']['password'],
        :method => :simple
      }
    raise 'connection failed' unless ldap.bind

    ldap
  end

  def exist_user_id??(id)
    filter = Net::LDAP::Filter.eq("uid", uid)
    base = config['ldap']['base']

    ldap.search(:base => base, :filter => filter) do |entry|
      entry.each do |attribute, values|
        values.each do |val|
          if attribute['uid']
            return true
          else
            return false
          end
        end
      end
    end
  end

  def exist_email?(email)

    filter = Net::LDAP::Filter.eq("mail", email)
    base = config['ldap']['base']

    ldap.search(:base => base, :filter => filter) do |entry|
      entry.each do |attribute, values|
        values.each do |val|
          if attribute['mail']
            return true
          else
            return false
          end
        end
      end
    end

  end

end

ldap = LdapUserChecker.new



email = ARGV[0]
puts ldap.exist_email?(email)