@marinade.finance/kamino-sdk/src/whirpools-client/instructions/closePosition.ts

Kamino SDK

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 '@project-serum/borsh'; // eslint-disable-line @typescript-eslint/no-unused-vars
import * as types from '../types'; // eslint-disable-line @typescript-eslint/no-unused-vars
import { WHIRLPOOL_PROGRAM_ID } from '../programId';

export interface ClosePositionAccounts {
  positionAuthority: PublicKey;
  receiver: PublicKey;
  position: PublicKey;
  positionMint: PublicKey;
  positionTokenAccount: PublicKey;
  tokenProgram: PublicKey;
}

export function closePosition(accounts: ClosePositionAccounts) {
  const keys: Array<AccountMeta> = [
    { pubkey: accounts.positionAuthority, isSigner: true, isWritable: false },
    { pubkey: accounts.receiver, isSigner: false, isWritable: true },
    { pubkey: accounts.position, isSigner: false, isWritable: true },
    { pubkey: accounts.positionMint, isSigner: false, isWritable: true },
    {
      pubkey: accounts.positionTokenAccount,
      isSigner: false,
      isWritable: true,
    },
    { pubkey: accounts.tokenProgram, isSigner: false, isWritable: false },
  ];
  const identifier = Buffer.from([123, 134, 81, 0, 49, 68, 98, 98]);
  const data = identifier;
  const ix = new TransactionInstruction({ keys, programId: WHIRLPOOL_PROGRAM_ID, data });
  return ix;
}