import { CommandParser } from '../client/parser';
import { RedisArgument, SimpleStringReply, BlobStringReply, Command } from '../RESP/types';

export default {
  NOT_KEYED_COMMAND: true,
  IS_READ_ONLY: true,
  /**
   * Constructs the PING command
   * 
   * @param parser - The command parser
   * @param message - Optional message to be returned instead of PONG
   * @see https://redis.io/commands/ping/
   */
  parseCommand(parser: CommandParser, message?: RedisArgument) {
    parser.push('PING');
    if (message) {
      parser.push(message);
    }
  },
  transformReply: undefined as unknown as () => SimpleStringReply | BlobStringReply
} as const satisfies Command;