/
createMint.ts
216 lines (192 loc) · 5.09 KB
/
createMint.ts
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import { createInitializeMintInstruction, MINT_SIZE } from '@solana/spl-token';
import { Keypair, PublicKey } from '@solana/web3.js';
import { SendAndConfirmTransactionResponse } from '../../rpcModule';
import { Mint } from '../models/Mint';
import { Option, TransactionBuilder, TransactionBuilderOptions } from '@/utils';
import {
makeConfirmOptionsFinalizedOnMainnet,
Operation,
OperationHandler,
OperationScope,
Signer,
useOperation,
} from '@/types';
import type { Metaplex } from '@/Metaplex';
// -----------------
// Operation
// -----------------
const Key = 'CreateMintOperation' as const;
/**
* Creates a new mint account.
*
* ```ts
* const { mint } = await metaplex.tokens().createMint();
* ```
*
* @group Operations
* @category Constructors
*/
export const createMintOperation = useOperation<CreateMintOperation>(Key);
/**
* @group Operations
* @category Types
*/
export type CreateMintOperation = Operation<
typeof Key,
CreateMintInput,
CreateMintOutput
>;
/**
* @group Operations
* @category Inputs
*/
export type CreateMintInput = {
/**
* The number of decimal points used to define token amounts.
*
* @defaultValue `0`
*/
decimals?: number;
/**
* The address of the new mint account as a Signer.
*
* @defaultValue `Keypair.generate()`
*/
mint?: Signer;
/**
* The address of the authority that is allowed
* to mint new tokens to token accounts.
*
* @defaultValue `metaplex.identity().publicKey`
*/
mintAuthority?: PublicKey;
/**
* The address of the authority that is allowed
* to freeze token accounts.
*
* @defaultValue Defaults to using the same value as the
* `mintAuthority` parameter.
*/
freezeAuthority?: Option<PublicKey>;
};
/**
* Create a new Mint account from the provided input
* and returns the newly created `Mint` model.
*
* @group Operations
* @category Outputs
*/
export type CreateMintOutput = {
/** The blockchain response from sending and confirming the transaction. */
response: SendAndConfirmTransactionResponse;
/** The mint account as a Signer. */
mintSigner: Signer;
/** The created mint account. */
mint: Mint;
};
/**
* @group Operations
* @category Handlers
*/
export const createMintOperationHandler: OperationHandler<CreateMintOperation> =
{
async handle(
operation: CreateMintOperation,
metaplex: Metaplex,
scope: OperationScope
): Promise<CreateMintOutput> {
const builder = await createMintBuilder(metaplex, operation.input, scope);
scope.throwIfCanceled();
const confirmOptions = makeConfirmOptionsFinalizedOnMainnet(
metaplex,
scope.confirmOptions
);
const output = await builder.sendAndConfirm(metaplex, confirmOptions);
scope.throwIfCanceled();
const mint = await metaplex
.tokens()
.findMintByAddress({ address: output.mintSigner.publicKey }, scope);
return { ...output, mint };
},
};
// -----------------
// Builder
// -----------------
/**
* @group Transaction Builders
* @category Inputs
*/
export type CreateMintBuilderParams = Omit<
CreateMintInput,
'confirmOptions'
> & {
/** A key to distinguish the instruction that creates the account. */
createAccountInstructionKey?: string;
/** A key to distinguish the instruction that initializes the mint account. */
initializeMintInstructionKey?: string;
};
/**
* @group Transaction Builders
* @category Contexts
*/
export type CreateMintBuilderContext = Omit<
CreateMintOutput,
'response' | 'mint'
>;
/**
* Creates a new mint account.
*
* ```ts
* const transactionBuilder = await metaplex.tokens().builders().createMint();
* ```
*
* @group Transaction Builders
* @category Constructors
*/
export const createMintBuilder = async (
metaplex: Metaplex,
params: CreateMintBuilderParams,
options: TransactionBuilderOptions = {}
): Promise<TransactionBuilder<CreateMintBuilderContext>> => {
const { programs, payer = metaplex.rpc().getDefaultFeePayer() } = options;
const {
decimals = 0,
mint = Keypair.generate(),
mintAuthority = metaplex.identity().publicKey,
freezeAuthority = mintAuthority,
} = params;
const tokenProgram = metaplex.programs().getToken(programs);
return (
TransactionBuilder.make<CreateMintBuilderContext>()
.setFeePayer(payer)
.setContext({ mintSigner: mint })
// Create an empty account for the mint.
.add(
await metaplex
.system()
.builders()
.createAccount(
{
newAccount: mint,
space: MINT_SIZE,
program: tokenProgram.address,
instructionKey:
params.createAccountInstructionKey ?? 'createAccount',
},
{ payer, programs }
)
)
// Initialize the mint.
.add({
instruction: createInitializeMintInstruction(
mint.publicKey,
decimals,
mintAuthority,
freezeAuthority,
tokenProgram.address
),
signers: [mint],
key: params.initializeMintInstructionKey ?? 'initializeMint',
})
);
};