AccountChannels.hpp

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

class AccountChannelsHandler
    : public rpc::HandlerFor<rpc::spec::handlers::account_channels::Input> {
    // dependencies
    std::shared_ptr<BackendInterface> const sharedPtrBackend_;
 
public:
    static constexpr auto kLimitMin = rpc::spec::handlers::account_channels::kLimitMin;
    static constexpr auto kLimitMax = rpc::spec::handlers::account_channels::kLimitMax;
    static constexpr auto kLimitDefault = rpc::spec::handlers::account_channels::kLimitDefault;

    struct ChannelResponse {
        std::string channelID;
        std::string account;
        std::string accountDestination;
        std::string amount;
        std::string balance;
        std::optional<std::string> publicKey;
        std::optional<std::string> publicKeyHex;
        uint32_t settleDelay{};
        std::optional<uint32_t> expiration;
        std::optional<uint32_t> cancelAfter;
        std::optional<uint32_t> sourceTag;
        std::optional<uint32_t> destinationTag;
    };

    struct Output {
        std::vector<ChannelResponse> channels;
        std::string account;
        std::string ledgerHash;
        uint32_t ledgerIndex{};
        // validated should be sent via framework
        bool validated = true;
        uint32_t limit{};
        std::optional<std::string> marker;
    };
 
    using Result = HandlerReturnType<Output>;

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

    [[nodiscard]] Result
    process(Input const& input, Context const& ctx) const;
 
private:
    static void
    addChannel(std::vector<ChannelResponse>& jsonChannels, xrpl::SLE const& channelSle);

    friend void
    tag_invoke(boost::json::value_from_tag, boost::json::value& jv, Output const& output);

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