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import { Styles } from '@0xproject/react-shared';
import { BigNumber, logUtils } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as _ from 'lodash';
import FlatButton from 'material-ui/FlatButton';
import { ListItem } from 'material-ui/List';
import * as React from 'react';
import { Blockchain } from 'ts/blockchain';
import { EthAmountInput } from 'ts/components/inputs/eth_amount_input';
import { TokenAmountInput } from 'ts/components/inputs/token_amount_input';
import { Dispatcher } from 'ts/redux/dispatcher';
import { colors } from 'ts/style/colors';
import { BlockchainCallErrs, Side, Token } from 'ts/types';
import { constants } from 'ts/utils/constants';
import { errorReporter } from 'ts/utils/error_reporter';
import { utils } from 'ts/utils/utils';
import { styles as walletItemStyles } from 'ts/utils/wallet_item_styles';
export interface WrapEtherItemProps {
userAddress: string;
networkId: number;
blockchain: Blockchain;
dispatcher: Dispatcher;
userEtherBalanceInWei: BigNumber;
direction: Side;
etherToken: Token;
lastForceTokenStateRefetch: number;
onConversionSuccessful?: () => void;
refetchEthTokenStateAsync: () => Promise<void>;
}
interface WrapEtherItemState {
currentInputAmount?: BigNumber;
isEthConversionHappening: boolean;
errorMsg: React.ReactNode;
}
const styles: Styles = {
topLabel: {
color: colors.black,
fontSize: 11,
},
inputContainer: {
backgroundColor: colors.white,
borderBottomRightRadius: 3,
borderBottomLeftRadius: 3,
borderTopRightRadius: 3,
borderTopLeftRadius: 3,
padding: 4,
},
amountInput: {
height: 34,
},
amountInputLabel: {
paddingTop: 10,
paddingRight: 10,
paddingLeft: 5,
color: colors.grey,
fontSize: 14,
},
amountInputHint: {
bottom: 18,
},
wrapEtherConfirmationButtonLabel: {
fontSize: 12,
color: colors.white,
},
errorMsg: {
fontSize: 12,
marginTop: 4,
color: colors.red,
minHeight: 20,
},
conversionSpinner: {
paddingTop: 26,
},
};
export class WrapEtherItem extends React.Component<WrapEtherItemProps, WrapEtherItemState> {
constructor(props: WrapEtherItemProps) {
super(props);
this.state = {
currentInputAmount: undefined,
isEthConversionHappening: false,
errorMsg: null,
};
}
public render(): React.ReactNode {
const etherBalanceInEth = Web3Wrapper.toUnitAmount(
this.props.userEtherBalanceInWei,
constants.DECIMAL_PLACES_ETH,
);
const isWrappingEth = this.props.direction === Side.Deposit;
const topLabelText = isWrappingEth ? 'Convert ETH into WETH 1:1' : 'Convert WETH into ETH 1:1';
return (
<div className="flex" style={walletItemStyles.focusedItem}>
<div>{this._renderIsEthConversionHappeningSpinner()} </div>
<div className="flex flex-column">
<div style={styles.topLabel}>{topLabelText}</div>
<div className="flex items-center">
<div style={styles.inputContainer}>
{isWrappingEth ? (
<EthAmountInput
balance={etherBalanceInEth}
amount={this.state.currentInputAmount}
hintText="0.00"
onChange={this._onValueChange.bind(this)}
shouldCheckBalance={true}
shouldShowIncompleteErrs={false}
shouldShowErrs={false}
shouldShowUnderline={false}
style={styles.amountInput}
labelStyle={styles.amountInputLabel}
inputHintStyle={styles.amountInputHint}
onErrorMsgChange={this._onErrorMsgChange.bind(this)}
/>
) : (
<TokenAmountInput
lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
blockchain={this.props.blockchain}
userAddress={this.props.userAddress}
networkId={this.props.networkId}
token={this.props.etherToken}
shouldShowIncompleteErrs={false}
shouldCheckBalance={true}
shouldCheckAllowance={false}
onChange={this._onValueChange.bind(this)}
amount={this.state.currentInputAmount}
hintText="0.00"
shouldShowErrs={false}
shouldShowUnderline={false}
style={styles.amountInput}
labelStyle={styles.amountInputLabel}
inputHintStyle={styles.amountInputHint}
onErrorMsgChange={this._onErrorMsgChange.bind(this)}
/>
)}
</div>
<div>{this._renderWrapEtherConfirmationButton()}</div>
</div>
{this._renderErrorMsg()}
</div>
</div>
);
}
private _onValueChange(isValid: boolean, amount?: BigNumber): void {
this.setState({
currentInputAmount: amount,
});
}
private _onErrorMsgChange(errorMsg: React.ReactNode): void {
this.setState({
errorMsg,
});
}
private _renderIsEthConversionHappeningSpinner(): React.ReactElement<{}> {
const visibility = this.state.isEthConversionHappening ? 'visible' : 'hidden';
const style: React.CSSProperties = { ...styles.conversionSpinner, visibility };
return (
<div className="pl3 pr2" style={style}>
<i className="zmdi zmdi-spinner zmdi-hc-spin" />
</div>
);
}
private _renderWrapEtherConfirmationButton(): React.ReactElement<{}> {
const isWrappingEth = this.props.direction === Side.Deposit;
const labelText = isWrappingEth ? 'wrap' : 'unwrap';
return (
<div className="pl1 pr3">
<FlatButton
backgroundColor={colors.wrapEtherConfirmationButton}
label={labelText}
labelStyle={styles.wrapEtherConfirmationButtonLabel}
onClick={this._wrapEtherConfirmationActionAsync.bind(this)}
disabled={this.state.isEthConversionHappening}
/>
</div>
);
}
private _renderErrorMsg(): React.ReactNode {
return <div style={styles.errorMsg}>{this.state.errorMsg}</div>;
}
private async _wrapEtherConfirmationActionAsync(): Promise<void> {
this.setState({
isEthConversionHappening: true,
});
try {
const etherToken = this.props.etherToken;
const amountToConvert = this.state.currentInputAmount;
if (this.props.direction === Side.Deposit) {
await this.props.blockchain.convertEthToWrappedEthTokensAsync(etherToken.address, amountToConvert);
const ethAmount = Web3Wrapper.toUnitAmount(amountToConvert, constants.DECIMAL_PLACES_ETH);
this.props.dispatcher.showFlashMessage(`Successfully wrapped ${ethAmount.toString()} ETH to WETH`);
} else {
await this.props.blockchain.convertWrappedEthTokensToEthAsync(etherToken.address, amountToConvert);
const tokenAmount = Web3Wrapper.toUnitAmount(amountToConvert, etherToken.decimals);
this.props.dispatcher.showFlashMessage(`Successfully unwrapped ${tokenAmount.toString()} WETH to ETH`);
}
await this.props.refetchEthTokenStateAsync();
this.props.onConversionSuccessful();
} catch (err) {
const errMsg = `${err}`;
if (_.includes(errMsg, BlockchainCallErrs.UserHasNoAssociatedAddresses)) {
this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen(true);
} else if (!utils.didUserDenyWeb3Request(errMsg)) {
logUtils.log(`Unexpected error encountered: ${err}`);
logUtils.log(err.stack);
const errorMsg =
this.props.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,
});
}
}
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