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import { BigNumber, logUtils } from '@0xproject/utils';
import * as _ from 'lodash';
import * as React from 'react';
import ReactTooltip = require('react-tooltip');
import { Blockchain } from 'ts/blockchain';
import { AllowanceState, AllowanceStateView } from 'ts/components/ui/allowance_state_view';
import { Container } from 'ts/components/ui/container';
import { Dispatcher } from 'ts/redux/dispatcher';
import { BalanceErrs, Token, TokenState } from 'ts/types';
import { analytics } from 'ts/utils/analytics';
import { errorReporter } from 'ts/utils/error_reporter';
import { utils } from 'ts/utils/utils';
export interface AllowanceStateToggleProps {
networkId: number;
blockchain: Blockchain;
dispatcher: Dispatcher;
token: Token;
tokenState: TokenState;
userAddress: string;
onErrorOccurred?: (errType: BalanceErrs) => void;
refetchTokenStateAsync: () => Promise<void>;
}
export interface AllowanceStateToggleState {
allowanceState: AllowanceState;
prevAllowance: BigNumber;
}
const DEFAULT_ALLOWANCE_AMOUNT_IN_BASE_UNITS = new BigNumber(2).pow(256).minus(1);
export class AllowanceStateToggle extends React.Component<AllowanceStateToggleProps, AllowanceStateToggleState> {
public static defaultProps = {
onErrorOccurred: _.noop.bind(_),
};
private static _getAllowanceStateFromAllowance(allowance?: BigNumber): AllowanceState {
if (_.isUndefined(allowance)) {
return AllowanceState.Loading;
}
if (allowance.gt(0)) {
return AllowanceState.Unlocked;
}
return AllowanceState.Locked;
}
constructor(props: AllowanceStateToggleProps) {
super(props);
const allowance = props.tokenState.allowance;
this.state = {
allowanceState: AllowanceState.Loading,
prevAllowance: allowance,
};
}
public render(): React.ReactNode {
const tooltipId = `tooltip-id-${this.props.token.symbol}`;
return (
<Container cursor="pointer">
<ReactTooltip id={tooltipId}>{this._getTooltipContent()}</ReactTooltip>
<div
data-tip={true}
data-for={tooltipId}
data-place="right"
data-effect="solid"
onClick={this._onToggleAllowanceAsync.bind(this)}
>
<AllowanceStateView allowanceState={this.state.allowanceState} />
</div>
</Container>
);
}
public componentWillReceiveProps(nextProps: AllowanceStateToggleProps): void {
if (!nextProps.tokenState.allowance.eq(this.state.prevAllowance)) {
const allowance = nextProps.tokenState.allowance;
this.setState({
prevAllowance: allowance,
allowanceState: AllowanceStateToggle._getAllowanceStateFromAllowance(allowance),
});
}
}
private _getTooltipContent(): React.ReactNode {
const symbol = this.props.token.symbol;
switch (this.state.allowanceState) {
case AllowanceState.Loading:
// TODO: support both awaiting confirmation and awaiting transaction.
return 'Please confirm in MetaMask';
case AllowanceState.Locked:
return (
<span>
Click to enable <b>{symbol}</b> for trading
</span>
);
case AllowanceState.Unlocked:
return (
<span>
<b>{symbol}</b> is available for trading
</span>
);
default:
return null;
}
}
private async _onToggleAllowanceAsync(): Promise<void> {
if (this.props.userAddress === '') {
this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen(true);
return;
}
this.setState({
allowanceState: AllowanceState.Loading,
});
let newAllowanceAmountInBaseUnits = new BigNumber(0);
if (!this._isAllowanceSet()) {
newAllowanceAmountInBaseUnits = DEFAULT_ALLOWANCE_AMOUNT_IN_BASE_UNITS;
}
const logData = {
tokenSymbol: this.props.token.symbol,
newAllowance: newAllowanceAmountInBaseUnits.toNumber(),
};
try {
await this.props.blockchain.setProxyAllowanceAsync(this.props.token, newAllowanceAmountInBaseUnits);
analytics.track('Set Allowances Success', logData);
await this.props.refetchTokenStateAsync();
} catch (err) {
analytics.track('Set Allowance Failure', logData);
this.setState({
allowanceState: AllowanceStateToggle._getAllowanceStateFromAllowance(this.state.prevAllowance),
});
const errMsg = `${err}`;
if (utils.didUserDenyWeb3Request(errMsg)) {
return;
}
logUtils.log(`Unexpected error encountered: ${err}`);
logUtils.log(err.stack);
this.props.onErrorOccurred(BalanceErrs.allowanceSettingFailed);
errorReporter.report(err);
}
}
private _isAllowanceSet(): boolean {
return !this.props.tokenState.allowance.eq(0);
}
}
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