# frozen_string_literal: true

module JoyUssdEngine::SessionManager
  def expire_mins
    @selected_provider.expiration.blank? ? 60.seconds : @selected_provider.expiration
  end

  def user_mobile_number
    @user_mobile_number ||= get_state[:"#{@params[:session_id]}"]
  end

  # Retrive Session Data
  def get_state
    session_id = @params[:session_id]
    REDIS.with do |conn|
      data = conn.get(session_id)
      return {} if data.blank?
      JSON.parse(data, symbolize_names: true)
    end
  end

  # Store USSD sessions in Redis with Expiry
  def set_state(payload = {})
    session_id = @params[:session_id]
    current_data = get_state
    REDIS.with do |conn|
      payload = current_data.merge(params.merge(payload))
      conn.set(session_id, payload.to_json)
      conn.expire(session_id, expire_mins)
    end
  end

  # Delete Session payload
  def reset_state
    session_id = @params[:session_id]
    REDIS.with do |conn|
      conn.del(session_id)
    end
  end
end