From a74f7690640fd7530ed0acaad609a8000fcc7d58 Mon Sep 17 00:00:00 2001
From: bijianing97 <826015751@qq.com>
Date: Thu, 12 Mar 2026 16:21:38 +0800
Subject: [PATCH] Add raydiumv4 swapv2

---
 meta.go      |  6 ++--
 raydiumv4.go | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+), 2 deletions(-)

diff --git a/meta.go b/meta.go
index 09cb4b9..66afd97 100644
--- a/meta.go
+++ b/meta.go
@@ -200,8 +200,10 @@ var (
 const (
 	raydiumV4InitializePoolDiscriminator = uint8(1)
 
-	raydiumV4SwapBaseInDiscriminator  = uint8(9)
-	raydiumV4SwapBaseOutDiscriminator = uint8(11)
+	raydiumV4SwapBaseInDiscriminator    = uint8(9)
+	raydiumV4SwapBaseOutDiscriminator   = uint8(11)
+	raydiumV4SwapBaseInV2Discriminator  = uint8(16)
+	raydiumV4SwapBaseOutV2Discriminator = uint8(17)
 
 	raydiumV4AddLiquidityDiscriminator    = uint8(3)
 	raydiumV4RemoveLiquidityDiscriminator = uint8(4)
diff --git a/raydiumv4.go b/raydiumv4.go
index 9dfe885..6931097 100644
--- a/raydiumv4.go
+++ b/raydiumv4.go
@@ -29,6 +29,8 @@ func raydiumV4Parser(tx *Tx, instruction Instruction, innerInstructions InnerIns
 		return raydiumv4WithdrawPNLParser(tx, instruction, innerInstructions, offset)
 	case raydiumV4SwapBaseInDiscriminator, raydiumV4SwapBaseOutDiscriminator:
 		return raydiumv4SwapParser(tx, instruction, innerInstructions, offset)
+	case raydiumV4SwapBaseInV2Discriminator, raydiumV4SwapBaseOutV2Discriminator:
+		return raydiumv4SwapV2Parser(tx, instruction, innerInstructions, offset)
 
 	default:
 		return nil, increaseOffset(offset), InstructionIgnoredError
@@ -397,3 +399,99 @@ func raydiumv4SwapParser(tx *Tx, instruction Instruction, innerInstructions Inne
 		},
 	}, offset, nil
 }
+
+func raydiumv4SwapV2Parser(tx *Tx, instruction Instruction, innerInstructions InnerInstructions, offset [2]uint) ([]Swap, [2]uint, error) {
+	accountsLen := len(instruction.Accounts)
+	if accountsLen != 8 {
+		return nil, increaseOffset(offset), fmt.Errorf("invalid number of accounts for raydiumv4 swapv2 instruction, offset %d, %d", offset[0], offset[1])
+	}
+	var entryContract = tx.rawTx.accountList[tx.rawTx.Transaction.Message.Instructions[offset[0]].ProgramIDIndex]
+
+	ammAccount := tx.rawTx.accountList[instruction.Accounts[1]]
+	user := tx.rawTx.accountList[instruction.Accounts[7]]
+	userSourceTokenAccount := tx.rawTx.accountList[instruction.Accounts[5]]
+	userDestinationTokenAccount := tx.rawTx.accountList[instruction.Accounts[6]]
+	baseVaultIdx := instruction.Accounts[3]
+	quoteVaultIdx := instruction.Accounts[4]
+
+	baseTokenbalance, err := getTokenBalanceAfterTx(tx.rawTx, baseVaultIdx)
+	if err != nil {
+		return nil, increaseOffset(offset), fmt.Errorf("failed to get base vault balance after tx: %v", err)
+	}
+	quoteTokenbalance, err := getTokenBalanceAfterTx(tx.rawTx, quoteVaultIdx)
+	if err != nil {
+		return nil, increaseOffset(offset), fmt.Errorf("failed to get quote vault balance after tx: %v", err)
+	}
+	inners, err := getInnerInstructions(innerInstructions, offset[1])
+	if err != nil {
+		return nil, increaseOffset(offset), err
+	}
+
+	var nextIndex int
+	var srcFound, destFound bool
+	var baseAmount, quoteAmount decimal.Decimal
+	var event string
+	for i, inner := range inners {
+		from, to, amount, err := parseTokenTransfer(tx.rawTx, inner)
+		if err != nil {
+			continue
+		}
+		if from.Equals(userSourceTokenAccount) && !srcFound {
+			if to.Equals(tx.rawTx.accountList[baseVaultIdx]) {
+				event = "sell"
+				baseAmount = decimal.NewFromUint64(amount)
+				srcFound = true
+			} else if to.Equals(tx.rawTx.accountList[quoteVaultIdx]) {
+				event = "buy"
+				quoteAmount = decimal.NewFromUint64(amount)
+				srcFound = true
+			}
+		} else if to.Equals(userDestinationTokenAccount) && !destFound {
+			if from.Equals(tx.rawTx.accountList[quoteVaultIdx]) {
+				event = "sell"
+				quoteAmount = decimal.NewFromUint64(amount)
+				destFound = true
+			} else if from.Equals(tx.rawTx.accountList[baseVaultIdx]) {
+				event = "buy"
+				baseAmount = decimal.NewFromUint64(amount)
+				destFound = true
+			}
+		}
+		if srcFound && destFound {
+			nextIndex = i + 1
+			break
+		}
+	}
+	if !srcFound || !destFound {
+		return nil, increaseOffset(offset), fmt.Errorf("raydiumv4 failed to find token transfer inner instruction for swapv2, offset %d, %d", offset[0], offset[1])
+	}
+	offset[1] += uint(nextIndex + 1)
+
+	userBase := getAccountBalanceAfterTx(tx.rawTx, instruction.Accounts[5])
+	userQuote := getAccountBalanceAfterTx(tx.rawTx, instruction.Accounts[6])
+	baseReserve, _ := decimal.NewFromString(baseTokenbalance.UITokenAmount.Amount)
+	quoteReserve, _ := decimal.NewFromString(quoteTokenbalance.UITokenAmount.Amount)
+
+	return []Swap{
+		{
+			Program:           SolProgramRaydiumV4,
+			Event:             event,
+			Pool:              ammAccount,
+			BaseMint:          baseTokenbalance.MintAccount,
+			QuoteMint:         quoteTokenbalance.MintAccount,
+			BaseTokenProgram:  baseTokenbalance.ProgramIDAccount,
+			QuoteTokenProgram: quoteTokenbalance.ProgramIDAccount,
+			BaseMintDecimals:  uint8(baseTokenbalance.UITokenAmount.Decimals),
+			QuoteMintDecimals: uint8(quoteTokenbalance.UITokenAmount.Decimals),
+			User:              user,
+			BaseAmount:        baseAmount,
+			QuoteAmount:       quoteAmount,
+			BaseReserve:       baseReserve,
+			QuoteReserve:      quoteReserve,
+			Mayhem:            false,
+			UserBaseBalance:   userBase,
+			UserQuoteBalance:  userQuote,
+			EntryContract:     entryContract,
+		},
+	}, offset, nil
+}