#pragma once

#include <atomic>

#include <cstdint>

#include <string>

namespace Envoy {

namespace Extensions {

namespace Tracers {

namespace OpenTelemetry {

/**

 * @brief Contains the configuration for the sampler. Might be extended in a future version

 *

 */

class SamplerConfig {

public:

  static constexpr uint32_t ROOT_SPANS_PER_MINUTE_DEFAULT = 1000;

  explicit SamplerConfig(uint32_t default_root_spans_per_minute)

  SamplerConfig(const SamplerConfig&) = delete;

  SamplerConfig& operator=(const SamplerConfig&) = delete;

  /**

   * @brief Parses a json string containing the expected root spans per minute.

   *

   * @param json A string containing the configuration.

   *

   * @return true if parsing was successful, false otherwise

   */

  bool parse(const std::string& json);

  /**

   * @brief Returns wanted root spans per minute

   *

   * @return uint32_t wanted root spans per minute

   */

private:

  const uint32_t default_root_spans_per_minute_;

  std::atomic<uint32_t> root_spans_per_minute_;

};

} // namespace OpenTelemetry

} // namespace Tracers

} // namespace Extensions

} // namespace Envoy