/**
 * Minimalist Queue interface.
 *
 * Will be probably enhanced in the future to support more advanced features. But for now, it's enough!
 */
export abstract class QueueProvider {
  /**
   * Push a message to the queue.
   *
   * @param queue Name of the queue to push the message to.
   * @param message String message to be pushed to the queue. Buffer messages are not supported for now.
   */
  public abstract push(queue: string, message: string): Promise<void>;

  /**
   * Pop a message from the queue.
   *
   * @param queue Name of the queue to pop the message from.
   *
   * @returns The message popped or `undefined` if the queue is empty.
   */
  public abstract pop(queue: string): Promise<string | undefined>;
}