import { PublicKey, SystemProgram, SYSVAR_RENT_PUBKEY, TransactionInstruction } from '@solana/web3.js'

export const TOKEN_METADATA_PROGRAM_ID = new PublicKey('metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s')
export const SPL_ASSOCIATED_TOKEN_ACCOUNT_PROGRAM_ID = new PublicKey(
  'ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL',
)
export const TOKEN_PROGRAM_ID = new PublicKey('TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA')

export const createAssociatedTokenAccountInstruction = (
  associatedTokenAddress: PublicKey,
  payer: PublicKey,
  walletAddress: PublicKey,
  splTokenMintAddress: PublicKey,
) => {
  const keys = [
    {
      pubkey: payer,
      isSigner: true,
      isWritable: true,
    },
    {
      pubkey: associatedTokenAddress,
      isSigner: false,
      isWritable: true,
    },
    {
      pubkey: walletAddress,
      isSigner: false,
      isWritable: false,
    },
    {
      pubkey: splTokenMintAddress,
      isSigner: false,
      isWritable: false,
    },
    {
      pubkey: SystemProgram.programId,
      isSigner: false,
      isWritable: false,
    },
    {
      pubkey: TOKEN_PROGRAM_ID,
      isSigner: false,
      isWritable: false,
    },
    {
      pubkey: SYSVAR_RENT_PUBKEY,
      isSigner: false,
      isWritable: false,
    },
  ]
  return new TransactionInstruction({
    keys,
    programId: SPL_ASSOCIATED_TOKEN_ACCOUNT_PROGRAM_ID,
    data: Buffer.from([]),
  })
}