@ledgerhq/coin-multiversx/lib/logic.js

Ledger MultiversX Coin integration

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.extractTokenId = exports.addPrefixToken = exports.computeDelegationBalance = exports.isAmountSpentFromBalance = exports.isSelfTransaction = exports.isValidAddress = void 0;
const bech32_1 = require("bech32");
const bignumber_js_1 = __importDefault(require("bignumber.js"));
/**
 * The human-readable-part of the bech32 addresses.
 */
const HRP = "erd";
/**
 * The length (in bytes) of a public key (from which a bech32 address can be obtained).
 */
const PUBKEY_LENGTH = 32;
function fromBech32(value) {
    let decoded;
    try {
        decoded = (0, bech32_1.decode)(value);
    }
    catch {
        throw new Error("Erd address can't be created");
    }
    const prefix = decoded.prefix;
    if (prefix !== HRP) {
        throw new Error("Bad HRP");
    }
    const pubkey = Buffer.from((0, bech32_1.fromWords)(decoded.words));
    if (pubkey.length !== PUBKEY_LENGTH) {
        throw new Error("Erd address can't be created");
    }
    return value;
}
/**
 * Returns true if address is a valid bech32
 *
 * @param {string} address
 */
const isValidAddress = (address) => {
    try {
        fromBech32(address);
        return true;
    }
    catch {
        return false;
    }
};
exports.isValidAddress = isValidAddress;
const isSelfTransaction = (a, t) => {
    return t.recipient === a.freshAddress;
};
exports.isSelfTransaction = isSelfTransaction;
// For some transaction modes the amount doesn't belong to the account's balance
const isAmountSpentFromBalance = (mode) => {
    return ["send", "delegate"].includes(mode);
};
exports.isAmountSpentFromBalance = isAmountSpentFromBalance;
const computeDelegationBalance = (delegations) => {
    let totalDelegationBalance = new bignumber_js_1.default(0);
    for (const delegation of delegations) {
        let delegationBalance = new bignumber_js_1.default(delegation.userActiveStake).plus(new bignumber_js_1.default(delegation.claimableRewards));
        for (const undelegation of delegation.userUndelegatedList) {
            delegationBalance = delegationBalance.plus(new bignumber_js_1.default(undelegation.amount));
        }
        totalDelegationBalance = totalDelegationBalance.plus(delegationBalance);
    }
    return totalDelegationBalance;
};
exports.computeDelegationBalance = computeDelegationBalance;
const addPrefixToken = (tokenId) => `multiversx/esdt/${tokenId}`;
exports.addPrefixToken = addPrefixToken;
const extractTokenId = (tokenId) => {
    return tokenId.split("/")[2];
};
exports.extractTokenId = extractTokenId;
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