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import { BuyQuote } from '@0x/asset-buyer';
import { BigNumber } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import * as React from 'react';
import { connect } from 'react-redux';
import { Dispatch } from 'redux';
import { 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 { errorUtil } from '../util/error';
import { AssetAmountInput } from '../components/asset_amount_input';
export interface SelectedAssetAmountInputProps {
fontColor?: ColorOption;
fontSize?: string;
}
interface ConnectedState {
value?: BigNumber;
assetData?: string;
}
interface ConnectedDispatch {
onChange: (value?: BigNumber, assetData?: string) => void;
}
const mapStateToProps = (state: State, _ownProps: SelectedAssetAmountInputProps): ConnectedState => ({
value: state.selectedAssetAmount,
assetData: state.selectedAssetData,
});
const updateBuyQuoteAsync = async (
dispatch: Dispatch<Action>,
assetData: string,
assetAmount: BigNumber,
): Promise<void> => {
// get a new buy quote.
const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, zrxDecimals);
// mark quote as pending
dispatch(actions.updateBuyQuoteStatePending());
let newBuyQuote: BuyQuote | undefined;
try {
newBuyQuote = await assetBuyer.getBuyQuoteAsync(assetData, baseUnitValue);
} catch (error) {
dispatch(actions.updateBuyQuoteStateFailure());
errorUtil.errorFlasher.flashNewError(dispatch, error);
return;
}
// We have a successful new buy quote
errorUtil.errorFlasher.clearError(dispatch);
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(newBuyQuote));
};
const debouncedUpdateBuyQuoteAsync = _.debounce(updateBuyQuoteAsync, 200, { trailing: true });
const mapDispatchToProps = (
dispatch: Dispatch<Action>,
_ownProps: SelectedAssetAmountInputProps,
): ConnectedDispatch => ({
onChange: (value, assetData) => {
// Update the input
dispatch(actions.updateSelectedAssetAmount(value));
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(undefined));
// reset our buy state
dispatch(actions.updatebuyOrderState(AsyncProcessState.NONE));
if (!_.isUndefined(value) && !_.isUndefined(assetData)) {
// even if it's debounced, give them the illusion it's loading
dispatch(actions.updateBuyQuoteStatePending());
// tslint:disable-next-line:no-floating-promises
debouncedUpdateBuyQuoteAsync(dispatch, assetData, value);
}
},
});
export const SelectedAssetAmountInput: React.ComponentClass<SelectedAssetAmountInputProps> = connect(
mapStateToProps,
mapDispatchToProps,
)(AssetAmountInput);
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