@solana/spl-token
Version:
SPL Token Program JS API
74 lines • 4.04 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.interestBearingMintUpdateRateInstructionData = exports.interestBearingMintInitializeInstructionData = exports.InterestBearingMintInstruction = void 0;
exports.createInitializeInterestBearingMintInstruction = createInitializeInterestBearingMintInstruction;
exports.createUpdateRateInterestBearingMintInstruction = createUpdateRateInterestBearingMintInstruction;
const buffer_layout_1 = require("@solana/buffer-layout");
const buffer_layout_utils_1 = require("@solana/buffer-layout-utils");
const web3_js_1 = require("@solana/web3.js");
const constants_js_1 = require("../../constants.js");
const internal_js_1 = require("../../instructions/internal.js");
const types_js_1 = require("../../instructions/types.js");
var InterestBearingMintInstruction;
(function (InterestBearingMintInstruction) {
InterestBearingMintInstruction[InterestBearingMintInstruction["Initialize"] = 0] = "Initialize";
InterestBearingMintInstruction[InterestBearingMintInstruction["UpdateRate"] = 1] = "UpdateRate";
})(InterestBearingMintInstruction || (exports.InterestBearingMintInstruction = InterestBearingMintInstruction = {}));
exports.interestBearingMintInitializeInstructionData = (0, buffer_layout_1.struct)([
(0, buffer_layout_1.u8)('instruction'),
(0, buffer_layout_1.u8)('interestBearingMintInstruction'),
// TODO: Make this an optional public key
(0, buffer_layout_utils_1.publicKey)('rateAuthority'),
(0, buffer_layout_1.s16)('rate'),
]);
exports.interestBearingMintUpdateRateInstructionData = (0, buffer_layout_1.struct)([
(0, buffer_layout_1.u8)('instruction'),
(0, buffer_layout_1.u8)('interestBearingMintInstruction'),
(0, buffer_layout_1.s16)('rate'),
]);
/**
* Construct an InitializeInterestBearingMint instruction
*
* @param mint Mint to initialize
* @param rateAuthority The public key for the account that can update the rate
* @param rate The initial interest rate
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
function createInitializeInterestBearingMintInstruction(mint, rateAuthority, rate, programId = constants_js_1.TOKEN_2022_PROGRAM_ID) {
const keys = [{ pubkey: mint, isSigner: false, isWritable: true }];
const data = Buffer.alloc(exports.interestBearingMintInitializeInstructionData.span);
exports.interestBearingMintInitializeInstructionData.encode({
instruction: types_js_1.TokenInstruction.InterestBearingMintExtension,
interestBearingMintInstruction: InterestBearingMintInstruction.Initialize,
rateAuthority,
rate,
}, data);
return new web3_js_1.TransactionInstruction({ keys, programId, data });
}
/**
* Construct an UpdateRateInterestBearingMint instruction
*
* @param mint Mint to initialize
* @param rateAuthority The public key for the account that can update the rate
* @param rate The updated interest rate
* @param multiSigners Signing accounts if `rateAuthority` is a multisig
* @param programId SPL Token program account
*
* @return Instruction to add to a transaction
*/
function createUpdateRateInterestBearingMintInstruction(mint, rateAuthority, rate, multiSigners = [], programId = constants_js_1.TOKEN_2022_PROGRAM_ID) {
const keys = (0, internal_js_1.addSigners)([
{ pubkey: mint, isSigner: false, isWritable: true },
{ pubkey: rateAuthority, isSigner: !multiSigners.length, isWritable: false },
], rateAuthority, multiSigners);
const data = Buffer.alloc(exports.interestBearingMintUpdateRateInstructionData.span);
exports.interestBearingMintUpdateRateInstructionData.encode({
instruction: types_js_1.TokenInstruction.InterestBearingMintExtension,
interestBearingMintInstruction: InterestBearingMintInstruction.UpdateRate,
rate,
}, data);
return new web3_js_1.TransactionInstruction({ keys, programId, data });
}
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