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import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as _ from 'lodash';
import * as React from 'react';
import { connect } from 'react-redux';
import { Dispatch } from 'redux';
import { zrxContractAddress, zrxDecimals } from '../constants';
import { Action, actions } from '../redux/actions';
import { State } from '../redux/reducer';
import { ColorOption } from '../style/theme';
import { AsyncProcessState } from '../types';
import { assetBuyer } from '../util/asset_buyer';
import { AmountInput } from '../components/amount_input';
export interface SelectedAssetAmountInputProps {
fontColor?: ColorOption;
fontSize?: string;
}
interface ConnectedState {
value?: BigNumber;
}
interface ConnectedDispatch {
onChange?: (value?: BigNumber) => void;
}
const mapStateToProps = (state: State, _ownProps: SelectedAssetAmountInputProps): ConnectedState => ({
value: state.selectedAssetAmount,
});
const updateBuyQuote = async (dispatch: Dispatch<Action>, assetAmount?: BigNumber): Promise<void> => {
if (_.isUndefined(assetAmount)) {
return;
}
// get a new buy quote.
const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, zrxDecimals);
const newBuyQuote = await assetBuyer.getBuyQuoteForERC20TokenAddressAsync(zrxContractAddress, baseUnitValue);
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(newBuyQuote));
};
const debouncedUpdateBuyQuote = _.debounce(updateBuyQuote, 200, { trailing: true });
const mapDispatchToProps = (dispatch: Dispatch<Action>): ConnectedDispatch => ({
onChange: async value => {
// Update the input
dispatch(actions.updateSelectedAssetAmount(value));
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(undefined));
// reset our buy state
dispatch(actions.updateSelectedAssetBuyState(AsyncProcessState.NONE));
// tslint:disable-next-line:no-floating-promises
debouncedUpdateBuyQuote(dispatch, value);
},
});
export const SelectedAssetAmountInput: React.ComponentClass<SelectedAssetAmountInputProps> = connect(
mapStateToProps,
mapDispatchToProps,
)(AmountInput);
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