class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  # protect_from_forgery with: :exception
  protect_from_forgery unless: -> { request.format.json? }
  # skip_before_action :verify_authenticity_token
  after_action :flash_to_http_header

  if (Rails.env.development? || Rails.env.test?)
    include Pundit
    after_action :verify_authorized, unless: -> { devise_controller? }
    # after_action :verify_policy_scoped, only: :index
    rescue_from Pundit::NotAuthorizedError, with: :user_not_authorized

    private

    def user_not_authorized(exception)
      policy_name = exception.policy.class.to_s.underscore
      flash[:alert] = "#{policy_name}.#{exception.query}"
      redirect_to (request.referrer || root_path)
    end
  end

  def authenticate_user!(args = nil)
    current_user.present?
  end

  def current_user
    super || User.where(soft_token: soft_token).first_or_initialize
  end

  private

  def flash_to_http_header
    return unless request.xhr?
    return if flash.empty?
    response.headers['X-FlashMessages'] = flash.to_hash.to_json
    flash.discard  # don't want the flash to appear when you reload page
  end

  def soft_token
    session[:user_token] ||= SecureRandom.hex(8)
  end

end