tx/transactors/dex/AMMDeposit.h

#pragma once
 
#include <xrpl/beast/utility/Journal.h>
#include <xrpl/core/ServiceRegistry.h>
#include <xrpl/ledger/ReadView.h>
#include <xrpl/protocol/AccountID.h>
#include <xrpl/protocol/Asset.h>
#include <xrpl/protocol/STAmount.h>
#include <xrpl/protocol/STTx.h>
#include <xrpl/protocol/TER.h>
#include <xrpl/protocol/XRPAmount.h>
#include <xrpl/tx/ApplyContext.h>
#include <xrpl/tx/Transactor.h>
 
#include <cstdint>
#include <optional>
#include <utility>
 
namespace xrpl {
 
class Sandbox;

class AMMDeposit : public Transactor
{
public:
    static constexpr auto kConsequencesFactory = ConsequencesFactoryType::Normal;
 
    explicit AMMDeposit(ApplyContext& ctx) : Transactor(ctx)
    {
    }
 
    static bool
    checkExtraFeatures(PreflightContext const& ctx);
 
    static std::uint32_t
    getFlagsMask(PreflightContext const& ctx);
 
    static NotTEC
    preflight(PreflightContext const& ctx);
 
    static TER
    preclaim(PreclaimContext const& ctx);
 
    TER
    doApply() override;
 
    void
    visitInvariantEntry(bool isDelete, SLE::const_ref before, SLE::const_ref after) override;
 
    [[nodiscard]] bool
    finalizeInvariants(
        STTx const& tx,
        TER result,
        XRPAmount fee,
        ReadView const& view,
        beast::Journal const& j) override;
 
private:
    std::pair<TER, bool>
    applyGuts(Sandbox& view);

    std::pair<TER, STAmount>
    deposit(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amountBalance,
        STAmount const& amountDeposit,
        std::optional<STAmount> const& amount2Deposit,
        STAmount const& lptAMMBalance,
        STAmount const& lpTokensDeposit,
        std::optional<STAmount> const& depositMin,
        std::optional<STAmount> const& deposit2Min,
        std::optional<STAmount> const& lpTokensDepositMin,
        std::uint16_t tfee);

    std::pair<TER, STAmount>
    equalDepositTokens(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amountBalance,
        STAmount const& amount2Balance,
        STAmount const& lptAMMBalance,
        STAmount const& lpTokensDeposit,
        std::optional<STAmount> const& depositMin,
        std::optional<STAmount> const& deposit2Min,
        std::uint16_t tfee);

    std::pair<TER, STAmount>
    equalDepositLimit(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amountBalance,
        STAmount const& amount2Balance,
        STAmount const& lptAMMBalance,
        STAmount const& amount,
        STAmount const& amount2,
        std::optional<STAmount> const& lpTokensDepositMin,
        std::uint16_t tfee);

    std::pair<TER, STAmount>
    singleDeposit(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amountBalance,
        STAmount const& lptAMMBalance,
        STAmount const& amount,
        std::optional<STAmount> const& lpTokensDepositMin,
        std::uint16_t tfee);

    std::pair<TER, STAmount>
    singleDepositTokens(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amountBalance,
        STAmount const& amount,
        STAmount const& lptAMMBalance,
        STAmount const& lpTokensDeposit,
        std::uint16_t tfee);

    std::pair<TER, STAmount>
    singleDepositEPrice(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amountBalance,
        STAmount const& amount,
        STAmount const& lptAMMBalance,
        STAmount const& ePrice,
        std::uint16_t tfee);

    std::pair<TER, STAmount>
    equalDepositInEmptyState(
        Sandbox& view,
        AccountID const& ammAccount,
        STAmount const& amount,
        STAmount const& amount2,
        Asset const& lptIssue,
        std::uint16_t tfee);
};
 
}  // namespace xrpl