72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
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package shreder
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import (
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"fmt"
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"github.com/gagliardetto/solana-go"
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"github.com/near/borsh-go"
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)
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// only buy function with pump program
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var fjszProgramID = solana.MustPublicKeyFromBase58("FJsZbftBqRLfF7uqUKpm4s2goDr6xsQ5Q3mN7AFJB6hK")
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var (
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fjszBuyTokensIX = []byte{0xe7, 0x3f, 0x99, 0x83, 0xf3, 0xed, 0xe3, 0x3c}
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)
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type fjszBuyArgs struct {
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SolAmount uint64
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TokenAmount uint64
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}
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func parseFjszInstruction(tx VersionedTransaction, instructionIndex int) (TxSignalBatch, error) {
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if instructionIndex >= len(tx.Instructions) {
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return nil, fmt.Errorf("instruction index out of bounds")
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}
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instruction := tx.Instructions[instructionIndex]
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if len(instruction.Data) == 0 {
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return nil, fmt.Errorf("data is empty")
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}
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if !matchMethod(instruction.Data, fjszBuyTokensIX) {
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return nil, nil
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}
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if len(instruction.Accounts) < 7 {
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return nil, fmt.Errorf("accounts too short")
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}
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if len(instruction.Data) < 16 {
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return nil, fmt.Errorf("data too short for fjzs buy args, len=%d", len(instruction.Data))
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}
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mint, err := tx.GetAccount(int(instruction.Accounts[2]))
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if err != nil {
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return nil, err
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}
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user, err := tx.GetAccount(int(instruction.Accounts[6]))
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if err != nil {
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return nil, err
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}
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var args fjszBuyArgs
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if err := borsh.Deserialize(&args, instruction.Data[8:]); err != nil {
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return nil, fmt.Errorf("failed to parse buy tokens args: %w", err)
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}
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return TxSignalBatch{&TxSignal{
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TxHash: tx.Signatures[0].String(),
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Label: "fjsz",
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Maker: user.String(),
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Token0Address: mint.String(),
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Token1Address: wsolMint,
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Token0Amount: formatTokenAmount(args.TokenAmount),
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Token1Amount: formatSolAmount(args.SolAmount),
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Program: "Pump",
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Event: "buy",
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IsToken2022: false,
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IsMayhemMode: false,
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Block: tx.Block,
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Token0AmountUint64: args.TokenAmount,
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Token1AmountUint64: args.SolAmount,
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}}, nil
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}
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