Chatwoot/app/controllers/api/v1/facebook_indicators_controller.rb

class Api::V1::FacebookIndicatorsController < Api::BaseController

  before_action :set_access_token
  around_action :handle_with_exception

  def mark_seen
    Facebook::Messenger::Bot.deliver(payload('mark_seen'), access_token: @access_token)
    head :ok
  end

  def typing_on
    Facebook::Messenger::Bot.deliver(payload('typing_on'), access_token: @access_token)
    head :ok
  end

  def typing_off
    Facebook::Messenger::Bot.deliver(payload('typing_off'), access_token: @access_token)
    head :ok
  end

  private

  def handle_with_exception
    begin
      yield
    rescue Facebook::Messenger::Error => e
      true
    end
  end

  def payload(action)
    {
      recipient: {id: params[:sender_id]},
      sender_action: action
    }
  end

  def set_access_token
    #have to cache this
    inbox = current_account.inboxes.find(params[:inbox_id])
    @access_token = inbox.channel.page_access_token
  end

end