#pragma once

#include <cstdint>

#include "absl/strings/ascii.h"

namespace Envoy {

namespace Extensions {

namespace Clusters {

namespace Redis {

class Crc16 {

public:

  /**

   * XMODEM CRC16 implementation according to CITT standards.

   * Based on (https://github.com/antirez/redis/blob/unstable/src/crc16.c).

   * @param key The string to hash.

   * @return The CRC16 hash code.

   */

  static uint16_t crc16(absl::string_view key);

};

} // namespace Redis

} // namespace Clusters

} // namespace Extensions

} // namespace Envoy