@solana/spl-token
Version:
SPL Token Program JS API
75 lines • 3.52 kB
JavaScript
import { struct, u8, f64 } from '@solana/buffer-layout';
import { publicKey, u64 } from '@solana/buffer-layout-utils';
import { TokenInstruction } from '../../instructions/types.js';
import { TransactionInstruction, PublicKey } from '@solana/web3.js';
import { programSupportsExtensions, TOKEN_2022_PROGRAM_ID } from '../../constants.js';
import { TokenUnsupportedInstructionError } from '../../errors.js';
import { addSigners } from '../../instructions/internal.js';
export var ScaledUiAmountInstruction;
(function (ScaledUiAmountInstruction) {
ScaledUiAmountInstruction[ScaledUiAmountInstruction["Initialize"] = 0] = "Initialize";
ScaledUiAmountInstruction[ScaledUiAmountInstruction["UpdateMultiplier"] = 1] = "UpdateMultiplier";
})(ScaledUiAmountInstruction || (ScaledUiAmountInstruction = {}));
export const initializeScaledUiAmountConfigInstructionData = struct([
u8('instruction'),
u8('scaledUiAmountInstruction'),
publicKey('authority'),
f64('multiplier'),
]);
/**
* Construct an InitializeScaledUiAmountConfig instruction
*
* @param mint Token mint account
* @param authority Optional authority that can update the multipliers
* @param signers The signer account(s)
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
export function createInitializeScaledUiAmountConfigInstruction(mint, authority, multiplier, programId = TOKEN_2022_PROGRAM_ID) {
if (!programSupportsExtensions(programId)) {
throw new TokenUnsupportedInstructionError();
}
const keys = [{ pubkey: mint, isSigner: false, isWritable: true }];
const data = Buffer.alloc(initializeScaledUiAmountConfigInstructionData.span);
initializeScaledUiAmountConfigInstructionData.encode({
instruction: TokenInstruction.ScaledUiAmountExtension,
scaledUiAmountInstruction: ScaledUiAmountInstruction.Initialize,
authority: authority ?? PublicKey.default,
multiplier: multiplier,
}, data);
return new TransactionInstruction({ keys, programId, data });
}
export const updateMultiplierData = struct([
u8('instruction'),
u8('scaledUiAmountInstruction'),
f64('multiplier'),
u64('effectiveTimestamp'),
]);
/**
* Construct an UpdateMultiplierData instruction
*
* @param mint Token mint account
* @param authority Optional authority that can update the multipliers
* @param multiplier New multiplier
* @param effectiveTimestamp Effective time stamp for the new multiplier
* @param multiSigners Signing accounts if `owner` is a multisig
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
export function createUpdateMultiplierDataInstruction(mint, authority, multiplier, effectiveTimestamp, multiSigners = [], programId = TOKEN_2022_PROGRAM_ID) {
if (!programSupportsExtensions(programId)) {
throw new TokenUnsupportedInstructionError();
}
const keys = addSigners([{ pubkey: mint, isSigner: false, isWritable: true }], authority, multiSigners);
const data = Buffer.alloc(updateMultiplierData.span);
updateMultiplierData.encode({
instruction: TokenInstruction.ScaledUiAmountExtension,
scaledUiAmountInstruction: ScaledUiAmountInstruction.UpdateMultiplier,
multiplier,
effectiveTimestamp,
}, data);
return new TransactionInstruction({ keys, programId, data });
}
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