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import {ZeroEx} from '0x.js';
import BigNumber from 'bignumber.js';
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 {
ethToken: Token;
ethTokenState: TokenState;
dispatcher: Dispatcher;
blockchain: Blockchain;
userEtherBalance: BigNumber;
onError: () => void;
}
interface EthWethConversionButtonState {
isEthConversionDialogVisible: boolean;
isEthConversionHappening: boolean;
}
export class EthWethConversionButton extends
React.Component<EthWethConversionButtonProps, EthWethConversionButtonState> {
public constructor(props: EthWethConversionButtonProps) {
super(props);
this.state = {
isEthConversionDialogVisible: false,
isEthConversionHappening: false,
};
}
public render() {
const labelStyle = this.state.isEthConversionHappening ? {fontSize: 10} : {};
return (
<div>
<RaisedButton
style={{width: '100%'}}
labelStyle={labelStyle}
disabled={this.state.isEthConversionHappening}
label={this.state.isEthConversionHappening ? 'Converting...' : 'Convert'}
onClick={this.toggleConversionDialog.bind(this)}
/>
<EthWethConversionDialog
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(value);
const ethAmount = ZeroEx.toUnitAmount(value, constants.ETH_DECIMAL_PLACES);
this.props.dispatcher.showFlashMessage(`Successfully converted ${ethAmount.toString()} ETH to WETH`);
balance = balance.plus(value);
} else {
await this.props.blockchain.convertWrappedEthTokensToEthAsync(value);
const tokenAmount = ZeroEx.toUnitAmount(value, token.decimals);
this.props.dispatcher.showFlashMessage(`Successfully converted ${tokenAmount.toString()} WETH to ETH`);
balance = balance.minus(value);
}
this.props.dispatcher.replaceTokenBalanceByAddress(token.address, balance);
} catch (err) {
const errMsg = '' + err;
if (_.includes(errMsg, BlockchainCallErrs.USER_HAS_NO_ASSOCIATED_ADDRESSES)) {
this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen(true);
} else if (!_.includes(errMsg, 'User denied transaction')) {
utils.consoleLog(`Unexpected error encountered: ${err}`);
utils.consoleLog(err.stack);
await errorReporter.reportAsync(err);
this.props.onError();
}
}
this.setState({
isEthConversionHappening: false,
});
}
}
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