Ledger.hpp

#pragma once
 
#include "data/AmendmentCenterInterface.hpp"
#include "data/BackendInterface.hpp"
#include "rpc/JS.hpp"
#include "rpc/common/Checkers.hpp"
#include "rpc/common/Specs.hpp"
#include "rpc/common/Types.hpp"
#include "rpc/common/Validators.hpp"
 
#include <boost/json/conversion.hpp>
#include <boost/json/object.hpp>
#include <boost/json/value.hpp>
#include <xrpl/protocol/jss.h>
 
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include <utility>
 
namespace rpc {

class LedgerHandler {
    std::shared_ptr<BackendInterface> sharedPtrBackend_;
    std::shared_ptr<data::AmendmentCenterInterface const> amendmentCenter_;
 
public:
    struct Output {
        uint32_t ledgerIndex{};
        std::string ledgerHash;
        // TODO: use better type
        boost::json::object header;
        bool validated = true;
    };

    struct Input {
        std::optional<std::string> ledgerHash;
        std::optional<uint32_t> ledgerIndex;
        bool binary = false;
        bool expand = false;
        bool ownerFunds = false;
        bool transactions = false;
        bool diff = false;
    };
 
    using Result = HandlerReturnType<Output>;

    LedgerHandler(
        std::shared_ptr<BackendInterface> sharedPtrBackend,
        std::shared_ptr<data::AmendmentCenterInterface const> amendmentCenter
    )
        : sharedPtrBackend_(std::move(sharedPtrBackend))
        , amendmentCenter_(std::move(amendmentCenter))
    {
    }

    static RpcSpecConstRef
    spec([[maybe_unused]] uint32_t apiVersion)
    {
        static auto const kRpcSpec = RpcSpec{
            {JS(full), validation::Type<bool>{}, validation::NotSupported{true}},
            {JS(full), check::Deprecated{}},
            {JS(accounts), validation::Type<bool>{}, validation::NotSupported{true}},
            {JS(accounts), check::Deprecated{}},
            {JS(owner_funds), validation::Type<bool>{}},
            {JS(queue), validation::Type<bool>{}, validation::NotSupported{true}},
            {JS(ledger_hash), validation::CustomValidators::uint256HexStringValidator},
            {JS(ledger_index), validation::CustomValidators::ledgerIndexValidator},
            {JS(transactions), validation::Type<bool>{}},
            {JS(expand), validation::Type<bool>{}},
            {JS(binary), validation::Type<bool>{}},
            {"diff", validation::Type<bool>{}},
            {JS(ledger), check::Deprecated{}},
            {JS(type), check::Deprecated{}},
        };
 
        return kRpcSpec;
    }

    [[nodiscard]] Result
    process(Input const& input, Context const& ctx) const;
 
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);
};
}  // namespace rpc