@ledgerhq/coin-celo
Version:
45 lines • 1.83 kB
JavaScript
import BigNumber from "bignumber.js";
import { isValidAddress } from "@celo/utils/lib/address";
import getFeesForTransaction from "./getFeesForTransaction";
import { findSubAccountById } from "@ledgerhq/coin-framework/account/index";
import { CELO_STABLE_TOKENS } from "../constants";
import { celoKit } from "../network/sdk";
export const prepareTransaction = async (account, transaction) => {
const kit = celoKit();
if (transaction.recipient && !isValidAddress(transaction.recipient))
return transaction;
if (["send", "vote"].includes(transaction.mode) && !transaction.recipient)
return transaction;
if (transaction.mode === "vote" &&
!transaction.useAllAmount &&
new BigNumber(transaction.amount).lte(0))
return transaction;
const fees = await getFeesForTransaction({ account, transaction });
const tokenAccount = findSubAccountById(account, transaction.subAccountId || "");
const isTokenTransaction = tokenAccount?.type === "TokenAccount";
const amount = transaction.useAllAmount && isTokenTransaction ? tokenAccount.balance : transaction.amount;
let token;
if (isTokenTransaction) {
if (CELO_STABLE_TOKENS.includes(tokenAccount.token.id)) {
token = await kit.contracts.getStableToken();
}
else {
token = await kit.contracts.getErc20(tokenAccount.token.contractAddress);
}
}
else {
token = await kit.contracts.getGoldToken();
}
return {
...transaction,
amount,
fees,
...(isTokenTransaction
? {
data: Buffer.from(token.transfer(transaction.recipient, amount.toFixed()).txo.encodeABI()),
}
: {}),
};
};
export default prepareTransaction;
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