mintme-sdk/lib/utils/pda.js

A simple and powerful SDK for creating and managing tokens on the Solana blockchain. MintMe SDK simplifies the process of minting SPL tokens with metadata, managing token authorities, and interacting with the Solana token ecosystem.

/**
 * Utilities for deriving Program Derived Addresses (PDAs)
 */

const solanaWeb3 = require("@solana/web3.js");
const anchor = require("@project-serum/anchor");
const constants = require("../constants");

/**
 * Derives the PDA for payment
 * @param {solanaWeb3.PublicKey} programId - Program ID
 * @returns {Promise<{pda: solanaWeb3.PublicKey, bump: number}>}
 */
function derivePaymentPDA(programId) {
  return solanaWeb3.PublicKey.findProgramAddress(
    [Buffer.from(constants.PAYMENT_SEED)],
    programId
  ).then((result) => ({
    pda: result[0],
    bump: result[1],
  }));
}

/**
 * Derives the PDA for the mint
 * @param {solanaWeb3.PublicKey} programId - Program ID
 * @param {solanaWeb3.PublicKey} payer - Payer's address
 * @param {string} name - Token name
 * @param {string} symbol - Token symbol
 * @param {string} uniqueKey - Unique Key
 * @returns {Promise<{mintPDA: solanaWeb3.PublicKey, bump: number}>}
 */
function deriveMintPDA(programId, payer, name, symbol, uniqueKey = "mitnme.dev") {

  return solanaWeb3.PublicKey.findProgramAddress(
    [
      Buffer.from("token-mint"),
      payer.toBuffer(),
      Buffer.from(name),
      Buffer.from(uniqueKey),
    ],
    programId
  ).then((result) => ({
    mintPDA: result[0],
    bump: result[1],
  }));
}

/**
 * Derives the associated token account
 * @param {solanaWeb3.PublicKey} mintPDA - Mint address
 * @param {solanaWeb3.PublicKey} owner - Account owner
 * @returns {Promise<solanaWeb3.PublicKey>}
 */
function deriveTokenAccount(mintPDA, owner) {
  return anchor.utils.token.associatedAddress({
    mint: mintPDA,
    owner: owner,
  });
}

/**
 * Derives the metadata account
 * @param {solanaWeb3.PublicKey} mintPDA - Mint address
 * @returns {Promise<{metadataAddress: solanaWeb3.PublicKey, metadataBump: number}>}
 */
function deriveMetadataAccount(mintPDA) {
  return solanaWeb3.PublicKey.findProgramAddress(
    [
      Buffer.from("metadata"),
      constants.TOKEN_METADATA_PROGRAM_ID.toBuffer(),
      mintPDA.toBuffer(),
    ],
    constants.TOKEN_METADATA_PROGRAM_ID
  ).then((result) => ({
    metadataAddress: result[0],
    metadataBump: result[1],
  }));
}

/**
 * Derives the PDA for the network fee configuration
 * @param {solanaWeb3.PublicKey} programId - Program ID
 * @returns {Promise<{pda: solanaWeb3.PublicKey, bump: number}>}
 */
function deriveNetworkFeeConfigPDA(programId) {
  return solanaWeb3.PublicKey.findProgramAddress([Buffer.from("network_fee_config")], programId).then((result) => ({
    pda: result[0],
    bump: result[1],
  }))
}

module.exports = {
  derivePaymentPDA,
  deriveMintPDA,
  deriveTokenAccount,
  deriveMetadataAccount,
  deriveNetworkFeeConfigPDA,
}