AccountMPTokens.hpp

#pragma once
 
#include "data/BackendInterface.hpp"
#include "rpc/Errors.hpp"
#include "rpc/JS.hpp"
#include "rpc/common/Checkers.hpp"
#include "rpc/common/MetaProcessors.hpp"
#include "rpc/common/Modifiers.hpp"
#include "rpc/common/Specs.hpp"
#include "rpc/common/Types.hpp"
#include "rpc/common/Validators.hpp"
 
#include <boost/json/conversion.hpp>
#include <boost/json/value.hpp>
#include <xrpl/protocol/AccountID.h>
#include <xrpl/protocol/ErrorCodes.h>
#include <xrpl/protocol/STLedgerEntry.h>
#include <xrpl/protocol/jss.h>
 
#include <cstdint>
#include <optional>
#include <string>
#include <vector>
 
namespace rpc {

class AccountMPTokensHandler {
    // dependencies
    std::shared_ptr<BackendInterface> sharedPtrBackend_;
 
public:
    static constexpr auto kLIMIT_MIN = 10;
    static constexpr auto kLIMIT_MAX = 400;
    static constexpr auto kLIMIT_DEFAULT = 200;

    struct MPTokenResponse {
        std::string MPTokenID;
        std::string account;
        std::string MPTokenIssuanceID;
        uint64_t MPTAmount{};
        std::optional<uint64_t> lockedAmount;
 
        std::optional<bool> mptLocked;
        std::optional<bool> mptAuthorized;
    };

    struct Output {
        std::string account;
        std::vector<MPTokenResponse> mpts;
        std::string ledgerHash;
        uint32_t ledgerIndex{};
        bool validated = true;
        std::optional<std::string> marker;
        uint32_t limit{};
    };

    struct Input {
        std::string account;
        std::optional<std::string> ledgerHash;
        std::optional<uint32_t> ledgerIndex;
        uint32_t limit = kLIMIT_DEFAULT;
        std::optional<std::string> marker;
    };
 
    using Result = HandlerReturnType<Output>;

    AccountMPTokensHandler(std::shared_ptr<BackendInterface> sharedPtrBackend)
        : sharedPtrBackend_(std::move(sharedPtrBackend))
    {
    }

    static RpcSpecConstRef
    spec([[maybe_unused]] uint32_t apiVersion)
    {
        static auto const kRPC_SPEC = RpcSpec{
            {JS(account),
             validation::Required{},
             meta::WithCustomError{
                 validation::CustomValidators::accountValidator,
                 Status(RippledError::rpcACT_MALFORMED)
             }},
            {JS(ledger_hash), validation::CustomValidators::uint256HexStringValidator},
            {JS(limit),
             validation::Type<uint32_t>{},
             validation::Min(1u),
             modifiers::Clamp<int32_t>{kLIMIT_MIN, kLIMIT_MAX}},
            {JS(ledger_index), validation::CustomValidators::ledgerIndexValidator},
            {JS(marker), validation::CustomValidators::accountMarkerValidator},
            {JS(ledger), check::Deprecated{}},
        };
 
        return kRPC_SPEC;
    }

    Result
    process(Input const& input, Context const& ctx) const;
 
private:
    static void
    addMPToken(std::vector<MPTokenResponse>& mpts, ripple::SLE const& sle);
 
private:
    friend void
    tag_invoke(boost::json::value_from_tag, boost::json::value& jv, Output const& output);

    friend Input
    tag_invoke(boost::json::value_to_tag<Input>, boost::json::value const& jv);

    friend void
    tag_invoke(boost::json::value_from_tag, boost::json::value& jv, MPTokenResponse const& mptoken);
};
 
}  // namespace rpc