// Copyright (c) 2020, The Loki Project
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#pragma once

#include "core_rpc_server.h"
#include "cryptonote_core/blockchain.h"
#include "oxenmq/connections.h"

namespace oxenmq { class OxenMQ; }

namespace cryptonote { namespace rpc {

void init_omq_options(boost::program_options::options_description& desc);

/**
 * LMQ RPC server class.  This doesn't actually hold the OxenMQ instance--that's in
 * cryptonote_core--but it works with it to add RPC endpoints, make it listen on RPC ports, and
 * handles RPC requests.
 */
class omq_rpc final : public cryptonote::BlockAddedHook {

  enum class mempool_sub_type { all, blink };
  struct mempool_sub {
    std::chrono::steady_clock::time_point expiry;
    mempool_sub_type type;
  };

  struct block_sub {
    std::chrono::steady_clock::time_point expiry;
  };

  cryptonote::core& core_;
  core_rpc_server& rpc_;
  std::shared_timed_mutex subs_mutex_;
  std::unordered_map<oxenmq::ConnectionID, mempool_sub> mempool_subs_;
  std::unordered_map<oxenmq::ConnectionID, block_sub> block_subs_;

public:
  omq_rpc(cryptonote::core& core, core_rpc_server& rpc, const boost::program_options::variables_map& vm);

  bool block_added(const block& block, const std::vector<transaction>& txs, const checkpoint_t *) override;

  void send_mempool_notifications(const crypto::hash& id, const transaction& tx, const std::string& blob, const tx_pool_options& opts);
};

}} // namespace cryptonote::rpc
