import { utils } from "@project-serum/anchor";
import { PublicKey } from "@solana/web3.js";

import {
  MINTER_ADDRESS,
  MINTER_PREFIX,
  REDEEMED_MINTS_PREFIX,
  TOKEN_METADATA_PROGRAM_ID,
} from "./constants";

/**
 * Finds the minter id.
 * @returns
 */
export const findMinterId = (identifier: PublicKey): PublicKey =>
  PublicKey.findProgramAddressSync(
    [utils.bytes.utf8.encode(MINTER_PREFIX), identifier.toBuffer()],
    MINTER_ADDRESS
  )[0];

/**
 * Finds the redeemed mints id.
 * @returns
 */
export const findRedeemedMintsId = (minterId: PublicKey): PublicKey =>
  PublicKey.findProgramAddressSync(
    [utils.bytes.utf8.encode(REDEEMED_MINTS_PREFIX), minterId.toBuffer()],
    MINTER_ADDRESS
  )[0];

export const getMetadataId = (mint: PublicKey): PublicKey =>
  PublicKey.findProgramAddressSync(
    [
      Buffer.from("metadata"),
      TOKEN_METADATA_PROGRAM_ID.toBuffer(),
      mint.toBuffer(),
    ],
    TOKEN_METADATA_PROGRAM_ID
  )[0];