NFTOffersCommon.hpp

#pragma once
 
#include "data/BackendInterface.hpp"
#include "rpc/common/SpecBackend.hpp"
#include "rpc/common/Types.hpp"
 
#include <boost/asio/spawn.hpp>
#include <boost/json/conversion.hpp>
#include <boost/json/value.hpp>
#include <rpcspec/handlers/nft_offers_common/Types.hpp>
#include <xrpl/basics/base_uint.h>
#include <xrpl/protocol/Keylet.h>
#include <xrpl/protocol/STLedgerEntry.h>
 
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>
 
namespace rpc {

class NFTOffersHandlerBase : public rpc::HandlerFor<rpc::spec::handlers::nft_offers_common::Input> {
    std::shared_ptr<BackendInterface> sharedPtrBackend_;
 
public:
    static constexpr auto kLimitMin = rpc::spec::handlers::nft_offers_common::kLimitMin;
    static constexpr auto kLimitMax = rpc::spec::handlers::nft_offers_common::kLimitMax;
    static constexpr auto kLimitDefault = rpc::spec::handlers::nft_offers_common::kLimitDefault;

    struct Output {
        std::string nftID;
        std::vector<xrpl::SLE> offers;
 
        // validated should be sent via framework
        bool validated = true;
        std::optional<uint32_t> limit;
        std::optional<std::string> marker;
    };
 
    using Result = HandlerReturnType<Output>;

    NFTOffersHandlerBase(std::shared_ptr<BackendInterface> sharedPtrBackend)
        : sharedPtrBackend_(std::move(sharedPtrBackend))
    {
    }
 
protected:
    [[nodiscard]] Result
    iterateOfferDirectory(
        Input input,
        xrpl::uint256 const& tokenID,
        xrpl::Keylet const& directory,
        boost::asio::yield_context yield
    ) const;
 
private:
    friend void
    tag_invoke(boost::json::value_from_tag, boost::json::value& jv, Output const& output);
};
 
}  // namespace rpc