// Copyright (c) 2018-2020, The Monero Project
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//
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//    of conditions and the following disclaimer in the documentation and/or other
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#pragma once

#include <atomic>
#include <boost/optional/optional.hpp>
#include <cstdint>
#include <string>

#include "db/storage.h"
#include "rpc/client.h"

namespace lws
{
  //! Scans all active `db::account`s. Detects if another process changes active list.
  class scanner
  {
    static std::atomic<bool> running;

    scanner() = delete;

  public:
    //! Use `client` to sync blockchain data, and \return client if successful.
    static expect<rpc::client> sync(db::storage disk, rpc::client client);

    //! Poll daemon until `stop()` is called, using `thread_count` threads.
    static void run(db::storage disk, rpc::context ctx, std::size_t thread_count);

    //! \return True if `stop()` has never been called.
    static bool is_running() noexcept { return running; }

    //! Stops all scanner instances globally.
    static void stop() noexcept { running = false; }
  };
} // lws