@openocean.finance/widget-sdk/src/_esm/core/EVM/setAllowance.js

OpenOcean Any-to-Any Cross-Chain-Swap SDK

import { encodeFunctionData } from 'viem';
import { sendTransaction } from 'viem/actions';
import { getAction } from 'viem/utils';
import { isNativeTokenAddress } from '../../utils/isZeroAddress.js';
import { approveAbi } from './abi.js';
import { getAllowance } from './getAllowance.js';
import { getMaxPriorityFeePerGas } from './utils.js';
export const setAllowance = async (client, tokenAddress, contractAddress, amount, executionOptions, returnPopulatedTransaction) => {
    const data = encodeFunctionData({
        abi: approveAbi,
        functionName: 'approve',
        args: [contractAddress, amount],
    });
    if (returnPopulatedTransaction) {
        return data;
    }
    let transactionRequest = {
        to: tokenAddress,
        data,
        maxPriorityFeePerGas: client.account?.type === 'local'
            ? await getMaxPriorityFeePerGas(client)
            : undefined,
    };
    if (executionOptions?.updateTransactionRequestHook) {
        const customizedTransactionRequest = await executionOptions.updateTransactionRequestHook({
            requestType: 'approve',
            ...transactionRequest,
        });
        transactionRequest = {
            ...transactionRequest,
            ...customizedTransactionRequest,
        };
    }
    return getAction(client, sendTransaction, 'sendTransaction')({
        to: transactionRequest.to,
        account: client.account,
        data: transactionRequest.data,
        gas: transactionRequest.gas,
        gasPrice: transactionRequest.gasPrice,
        maxFeePerGas: transactionRequest.maxFeePerGas,
        maxPriorityFeePerGas: transactionRequest.maxPriorityFeePerGas,
    });
};
/**
 * Set approval for a certain token and amount.
 * @param request - The approval request
 * @param request.walletClient - The Viem wallet client used to send the transaction
 * @param request.token - The token for which to set the allowance
 * @param request.spenderAddress - The address of the spender
 * @param request.amount - The amount of tokens to approve
 * @returns Returns Hash or nothing
 */
export const setTokenAllowance = async ({ walletClient, token, spenderAddress, amount, }) => {
    // native token don't need approval
    if (isNativeTokenAddress(token.address)) {
        return;
    }
    const approvedAmount = await getAllowance(token.chainId, token.address, walletClient.account.address, spenderAddress);
    if (amount > approvedAmount) {
        const approveTx = await setAllowance(walletClient, token.address, spenderAddress, amount);
        return approveTx;
    }
};
/**
 * Revoke approval for a certain token.
 * @param request - The revoke request
 * @param request.walletClient - The Viem wallet client used to send the transaction
 * @param request.token - The token for which to revoke the allowance
 * @param request.spenderAddress - The address of the spender
 * @returns Returns Hash or nothing
 */
export const revokeTokenApproval = async ({ walletClient, token, spenderAddress, }) => {
    // native token don't need approval
    if (isNativeTokenAddress(token.address)) {
        return;
    }
    const approvedAmount = await getAllowance(token.chainId, token.address, walletClient.account.address, spenderAddress);
    if (approvedAmount > 0) {
        const approveTx = await setAllowance(walletClient, token.address, spenderAddress, 0n);
        return approveTx;
    }
};
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