@kamino-finance/kliquidity-sdk/src/raydium_client/instructions/decreaseLiquidity.ts

Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol

import { TransactionInstruction, PublicKey, AccountMeta } from "@solana/web3.js" // eslint-disable-line @typescript-eslint/no-unused-vars
import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"

export interface DecreaseLiquidityArgs {
  liquidity: BN
  amount0Min: BN
  amount1Min: BN
}

export interface DecreaseLiquidityAccounts {
  nftOwner: PublicKey
  nftAccount: PublicKey
  personalPosition: PublicKey
  poolState: PublicKey
  protocolPosition: PublicKey
  tokenVault0: PublicKey
  tokenVault1: PublicKey
  tickArrayLower: PublicKey
  tickArrayUpper: PublicKey
  recipientTokenAccount0: PublicKey
  recipientTokenAccount1: PublicKey
  tokenProgram: PublicKey
}

export const layout = borsh.struct([
  borsh.u128("liquidity"),
  borsh.u64("amount0Min"),
  borsh.u64("amount1Min"),
])

export function decreaseLiquidity(
  args: DecreaseLiquidityArgs,
  accounts: DecreaseLiquidityAccounts,
  programId: PublicKey = PROGRAM_ID
) {
  const keys: Array<AccountMeta> = [
    { pubkey: accounts.nftOwner, isSigner: true, isWritable: false },
    { pubkey: accounts.nftAccount, isSigner: false, isWritable: false },
    { pubkey: accounts.personalPosition, isSigner: false, isWritable: true },
    { pubkey: accounts.poolState, isSigner: false, isWritable: true },
    { pubkey: accounts.protocolPosition, isSigner: false, isWritable: true },
    { pubkey: accounts.tokenVault0, isSigner: false, isWritable: true },
    { pubkey: accounts.tokenVault1, isSigner: false, isWritable: true },
    { pubkey: accounts.tickArrayLower, isSigner: false, isWritable: true },
    { pubkey: accounts.tickArrayUpper, isSigner: false, isWritable: true },
    {
      pubkey: accounts.recipientTokenAccount0,
      isSigner: false,
      isWritable: true,
    },
    {
      pubkey: accounts.recipientTokenAccount1,
      isSigner: false,
      isWritable: true,
    },
    { pubkey: accounts.tokenProgram, isSigner: false, isWritable: false },
  ]
  const identifier = Buffer.from([160, 38, 208, 111, 104, 91, 44, 1])
  const buffer = Buffer.alloc(1000)
  const len = layout.encode(
    {
      liquidity: args.liquidity,
      amount0Min: args.amount0Min,
      amount1Min: args.amount1Min,
    },
    buffer
  )
  const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
  const ix = new TransactionInstruction({ keys, programId, data })
  return ix
}