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import { ERC20TokenWrapper } from '0x.js';
import { BigNumber, logUtils } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as _ from 'lodash';
import { configs } from './configs';
import { TOKENS_BY_NETWORK } from './tokens';
const DISPENSE_AMOUNT_ETHER = 0.1;
const DISPENSE_AMOUNT_TOKEN = 1;
const DISPENSE_MAX_AMOUNT_TOKEN = 100;
const DISPENSE_MAX_AMOUNT_ETHER = 2;
type AsyncTask = () => Promise<void>;
export const dispenseAssetTasks = {
dispenseEtherTask(recipientAddress: string, web3Wrapper: Web3Wrapper): AsyncTask {
return async () => {
logUtils.log(`Processing ETH ${recipientAddress}`);
const userBalance = await web3Wrapper.getBalanceInWeiAsync(recipientAddress);
const maxAmountInWei = Web3Wrapper.toWei(new BigNumber(DISPENSE_MAX_AMOUNT_ETHER));
if (userBalance.greaterThanOrEqualTo(maxAmountInWei)) {
logUtils.log(
`User exceeded ETH balance maximum (${maxAmountInWei}) ${recipientAddress} ${userBalance} `,
);
return;
}
const txHash = await web3Wrapper.sendTransactionAsync({
from: configs.DISPENSER_ADDRESS,
to: recipientAddress,
value: Web3Wrapper.toWei(new BigNumber(DISPENSE_AMOUNT_ETHER)),
});
logUtils.log(`Sent ${DISPENSE_AMOUNT_ETHER} ETH to ${recipientAddress} tx: ${txHash}`);
};
},
dispenseTokenTask(
recipientAddress: string,
tokenSymbol: string,
networkId: number,
erc20TokenWrapper: ERC20TokenWrapper,
): AsyncTask {
return async () => {
logUtils.log(`Processing ${tokenSymbol} ${recipientAddress}`);
const amountToDispense = new BigNumber(DISPENSE_AMOUNT_TOKEN);
const tokenIfExists = _.get(TOKENS_BY_NETWORK, [networkId, tokenSymbol]);
if (_.isUndefined(tokenIfExists)) {
throw new Error(`Unsupported asset type: ${tokenSymbol}`);
}
const baseUnitAmount = Web3Wrapper.toBaseUnitAmount(amountToDispense, tokenIfExists.decimals);
const userBalanceBaseUnits = await erc20TokenWrapper.getBalanceAsync(
tokenIfExists.address,
recipientAddress,
);
const maxAmountBaseUnits = Web3Wrapper.toBaseUnitAmount(
new BigNumber(DISPENSE_MAX_AMOUNT_TOKEN),
tokenIfExists.decimals,
);
if (userBalanceBaseUnits.greaterThanOrEqualTo(maxAmountBaseUnits)) {
logUtils.log(
`User exceeded token balance maximum (${maxAmountBaseUnits}) ${recipientAddress} ${userBalanceBaseUnits} `,
);
return;
}
const txHash = await erc20TokenWrapper.transferAsync(
tokenIfExists.address,
configs.DISPENSER_ADDRESS,
recipientAddress,
baseUnitAmount,
);
logUtils.log(`Sent ${amountToDispense} ${tokenSymbol} to ${recipientAddress} tx: ${txHash}`);
};
},
};
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