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import { ZeroEx } from '0x.js';
import { BigNumber } from '@0xproject/utils';
import * as _ from 'lodash';
import RaisedButton from 'material-ui/RaisedButton';
import * as React from 'react';
import { Blockchain } from 'ts/blockchain';
import { EthWethConversionDialog } from 'ts/components/dialogs/eth_weth_conversion_dialog';
import { Dispatcher } from 'ts/redux/dispatcher';
import { BlockchainCallErrs, Side, Token, TokenState } from 'ts/types';
import { constants } from 'ts/utils/constants';
import { errorReporter } from 'ts/utils/error_reporter';
import { utils } from 'ts/utils/utils';
interface EthWethConversionButtonProps {
direction: Side;
ethToken: Token;
ethTokenState: TokenState;
dispatcher: Dispatcher;
blockchain: Blockchain;
userEtherBalance: BigNumber;
isOutdatedWrappedEther: boolean;
onConversionSuccessful?: () => void;
isDisabled?: boolean;
}
interface EthWethConversionButtonState {
isEthConversionDialogVisible: boolean;
isEthConversionHappening: boolean;
}
export class EthWethConversionButton extends React.Component<
EthWethConversionButtonProps,
EthWethConversionButtonState
> {
public static defaultProps: Partial<EthWethConversionButtonProps> = {
isDisabled: false,
onConversionSuccessful: _.noop,
};
public constructor(props: EthWethConversionButtonProps) {
super(props);
this.state = {
isEthConversionDialogVisible: false,
isEthConversionHappening: false,
};
}
public render() {
const labelStyle = this.state.isEthConversionHappening ? { fontSize: 10 } : {};
let callToActionLabel;
let inProgressLabel;
if (this.props.direction === Side.Deposit) {
callToActionLabel = 'Wrap';
inProgressLabel = 'Wrapping...';
} else {
callToActionLabel = 'Unwrap';
inProgressLabel = 'Unwrapping...';
}
return (
<div>
<RaisedButton
style={{ width: '100%' }}
labelStyle={labelStyle}
disabled={this.props.isDisabled || this.state.isEthConversionHappening}
label={this.state.isEthConversionHappening ? inProgressLabel : callToActionLabel}
onClick={this._toggleConversionDialog.bind(this)}
/>
<EthWethConversionDialog
direction={this.props.direction}
isOpen={this.state.isEthConversionDialogVisible}
onComplete={this._onConversionAmountSelectedAsync.bind(this)}
onCancelled={this._toggleConversionDialog.bind(this)}
etherBalance={this.props.userEtherBalance}
token={this.props.ethToken}
tokenState={this.props.ethTokenState}
/>
</div>
);
}
private _toggleConversionDialog() {
this.setState({
isEthConversionDialogVisible: !this.state.isEthConversionDialogVisible,
});
}
private async _onConversionAmountSelectedAsync(direction: Side, value: BigNumber) {
this.setState({
isEthConversionHappening: true,
});
this._toggleConversionDialog();
const token = this.props.ethToken;
const tokenState = this.props.ethTokenState;
let balance = tokenState.balance;
try {
if (direction === Side.Deposit) {
await this.props.blockchain.convertEthToWrappedEthTokensAsync(token.address, value);
const ethAmount = ZeroEx.toUnitAmount(value, constants.DECIMAL_PLACES_ETH);
this.props.dispatcher.showFlashMessage(`Successfully wrapped ${ethAmount.toString()} ETH to WETH`);
balance = balance.plus(value);
} else {
await this.props.blockchain.convertWrappedEthTokensToEthAsync(token.address, value);
const tokenAmount = ZeroEx.toUnitAmount(value, token.decimals);
this.props.dispatcher.showFlashMessage(`Successfully unwrapped ${tokenAmount.toString()} WETH to ETH`);
balance = balance.minus(value);
}
if (!this.props.isOutdatedWrappedEther) {
this.props.dispatcher.replaceTokenBalanceByAddress(token.address, balance);
}
this.props.onConversionSuccessful();
} catch (err) {
const errMsg = `${err}`;
if (_.includes(errMsg, BlockchainCallErrs.UserHasNoAssociatedAddresses)) {
this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen(true);
} else if (!_.includes(errMsg, 'User denied transaction')) {
utils.consoleLog(`Unexpected error encountered: ${err}`);
utils.consoleLog(err.stack);
const errorMsg =
direction === Side.Deposit
? 'Failed to wrap your ETH. Please try again.'
: 'Failed to unwrap your WETH. Please try again.';
this.props.dispatcher.showFlashMessage(errorMsg);
await errorReporter.reportAsync(err);
}
}
this.setState({
isEthConversionHappening: false,
});
}
}
|
