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import { ZeroEx } from '0x.js';
import { colors, Styles } from '@0xproject/react-shared';
import { BigNumber, logUtils } from '@0xproject/utils';
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 { 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;
currentInputHasErrors: boolean;
isEthConversionHappening: boolean;
}
const styles: Styles = {
topLabel: { color: colors.black, fontSize: 11 },
inputContainer: {
backgroundColor: colors.white,
borderBottomRightRadius: 3,
borderBottomLeftRadius: 3,
borderTopRightRadius: 3,
borderTopLeftRadius: 3,
padding: 4,
width: 125,
},
ethAmountInput: { height: 32 },
innerDiv: { paddingLeft: 60, paddingTop: 0 },
wrapEtherConfirmationButtonContainer: { width: 128, top: 16 },
wrapEtherConfirmationButtonLabel: {
fontSize: 10,
color: colors.white,
},
};
export class WrapEtherItem extends React.Component<WrapEtherItemProps, WrapEtherItemState> {
constructor(props: WrapEtherItemProps) {
super(props);
this.state = {
currentInputAmount: undefined,
currentInputHasErrors: false,
isEthConversionHappening: false,
};
}
public render(): React.ReactNode {
const etherBalanceInEth = ZeroEx.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 (
<ListItem
primaryText={
<div>
<div style={styles.topLabel}>{topLabelText}</div>
<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.ethAmountInput}
/>
) : (
<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} // TODO: error handling
shouldShowUnderline={false}
style={styles.ethAmountInput}
/>
)}
</div>
</div>
}
secondaryTextLines={2}
disableTouchRipple={true}
style={walletItemStyles.focusedItem}
innerDivStyle={styles.innerDiv}
leftIcon={this._renderIsEthConversionHappeningSpinner()}
rightAvatar={this._renderWrapEtherConfirmationButton()}
/>
);
}
private _onValueChange(isValid: boolean, amount?: BigNumber): void {
this.setState({
currentInputAmount: amount,
currentInputHasErrors: !isValid,
});
}
private _renderIsEthConversionHappeningSpinner(): React.ReactElement<{}> {
return this.state.isEthConversionHappening ? (
<div className="pl1" style={{ paddingTop: 10 }}>
<i className="zmdi zmdi-spinner zmdi-hc-spin" />
</div>
) : null;
}
private _renderWrapEtherConfirmationButton(): React.ReactElement<{}> {
const isWrappingEth = this.props.direction === Side.Deposit;
const labelText = isWrappingEth ? 'wrap' : 'unwrap';
return (
<div style={styles.wrapEtherConfirmationButtonContainer}>
<FlatButton
backgroundColor={colors.wrapEtherConfirmationButton}
label={labelText}
labelStyle={styles.wrapEtherConfirmationButtonLabel}
onClick={this._wrapEtherConfirmationActionAsync.bind(this)}
disabled={this.state.isEthConversionHappening}
/>
</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 = ZeroEx.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 = ZeroEx.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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