module LoginVerification
  extend ActiveSupport::Concern

  included do
    before_action :authenticate_session_token
    helper_method :current_company, :current_login_employee, :current_user, :get_cashier
  end

  #this is base api base controller to need to inherit.
  #all token authentication must be done here
  #response format must be set to JSON
  def current_company
    begin
     return Company.first
    rescue
      return nil
    end
  end

  def current_login_employee
    @employee = Employee.find_by_token_session(session[:session_token])
  end

  def current_user
    @current_user ||= Employee.find_by_token_session(session[:session_token]) if session[:session_token]
  end

  #  Get current Cashiers
  def get_cashier
    @cashier = Employee.where("role = 'cashier' AND token_session <> ''")
  end

  protected
  # Authenticate the user with token based authentication
  def authenticate   
    authenticate_session_token || render_unauthorized    
  end

  def authenticate_session_token    
    token = session[:session_token]
    if (token)
      #@current_user = User.find_by(api_key: token)
      #Rails.logger.debug "token - " + token.to_s

      @user = Employee.authenticate_by_token(token)
      if @user
        return true
        #Maybe log - login?
      end
    end
  end

  def render_unauthorized
    redirect_to root_path
  end

  private
  def check_license
    License.check_license_file 
  end

  def check_installation
    if current_company.nil?
      redirect_to install_path
    end
  end

end