import BigNumber from 'bignumber.js';
import Dialog from 'material-ui/Dialog';
import FlatButton from 'material-ui/FlatButton';
import * as React from 'react';
import { EthAmountInput } from 'ts/components/inputs/eth_amount_input';
import { TokenAmountInput } from 'ts/components/inputs/token_amount_input';
import { Side, Token, TokenState } from 'ts/types';
import { colors } from 'ts/utils/colors';

interface EthWethConversionDialogProps {
    direction: Side;
    onComplete: (direction: Side, value: BigNumber) => void;
    onCancelled: () => void;
    isOpen: boolean;
    token: Token;
    tokenState: TokenState;
    etherBalance: BigNumber;
}

interface EthWethConversionDialogState {
    value?: BigNumber;
    shouldShowIncompleteErrs: boolean;
    hasErrors: boolean;
}

export class EthWethConversionDialog extends React.Component<
    EthWethConversionDialogProps,
    EthWethConversionDialogState
> {
    constructor() {
        super();
        this.state = {
            shouldShowIncompleteErrs: false,
            hasErrors: false,
        };
    }
    public render() {
        const convertDialogActions = [
            <FlatButton key="cancel" label="Cancel" onTouchTap={this._onCancel.bind(this)} />,
            <FlatButton key="convert" label="Convert" primary={true} onTouchTap={this._onConvertClick.bind(this)} />,
        ];
        const title = this.props.direction === Side.Deposit ? 'Wrap ETH' : 'Unwrap WETH';
        return (
            <Dialog
                title={title}
                titleStyle={{ fontWeight: 100 }}
                actions={convertDialogActions}
                contentStyle={{ width: 448 }}
                open={this.props.isOpen}
            >
                {this._renderConversionDialogBody()}
            </Dialog>
        );
    }
    private _renderConversionDialogBody() {
        const explanation =
            this.props.direction === Side.Deposit
                ? 'Convert your Ether into a tokenized, tradable form.'
                : "Convert your Wrapped Ether back into it's native form.";
        const isWrappedVersion = this.props.direction === Side.Receive;
        return (
            <div>
                <div className="pb2">{explanation}</div>
                <div className="mx-auto" style={{ maxWidth: 312 }}>
                    <div className="flex">
                        {this._renderCurrency(isWrappedVersion)}
                        <div style={{ paddingTop: 68 }}>
                            <i style={{ fontSize: 28, color: colors.darkBlue }} className="zmdi zmdi-arrow-right" />
                        </div>
                        {this._renderCurrency(!isWrappedVersion)}
                    </div>
                    <div className="pt2 mx-auto" style={{ width: 245 }}>
                        {this.props.direction === Side.Receive ? (
                            <TokenAmountInput
                                token={this.props.token}
                                tokenState={this.props.tokenState}
                                shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
                                shouldCheckBalance={true}
                                shouldCheckAllowance={false}
                                onChange={this._onValueChange.bind(this)}
                                amount={this.state.value}
                                onVisitBalancesPageClick={this.props.onCancelled}
                            />
                        ) : (
                            <EthAmountInput
                                balance={this.props.etherBalance}
                                amount={this.state.value}
                                onChange={this._onValueChange.bind(this)}
                                shouldCheckBalance={true}
                                shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
                                onVisitBalancesPageClick={this.props.onCancelled}
                            />
                        )}
                        <div className="pt1" style={{ fontSize: 12 }}>
                            <div className="left">1 ETH = 1 WETH</div>
                            {this.props.direction === Side.Receive && (
                                <div
                                    className="right"
                                    onClick={this._onMaxClick.bind(this)}
                                    style={{
                                        color: colors.darkBlue,
                                        textDecoration: 'underline',
                                        cursor: 'pointer',
                                    }}
                                >
                                    Max
                                </div>
                            )}
                        </div>
                    </div>
                </div>
            </div>
        );
    }
    private _renderCurrency(isWrappedVersion: boolean) {
        const name = isWrappedVersion ? 'Wrapped Ether' : 'Ether';
        const iconUrl = isWrappedVersion ? '/images/token_icons/ether_erc20.png' : '/images/ether.png';
        const symbol = isWrappedVersion ? 'WETH' : 'ETH';
        return (
            <div className="mx-auto pt2">
                <div className="center" style={{ color: colors.darkBlue }}>
                    {name}
                </div>
                <div className="center py2">
                    <img src={iconUrl} style={{ width: 60 }} />
                </div>
                <div className="center" style={{ fontSize: 12 }}>
                    ({symbol})
                </div>
            </div>
        );
    }
    private _onMaxClick() {
        this.setState({
            value: this.props.tokenState.balance,
        });
    }
    private _onValueChange(isValid: boolean, amount?: BigNumber) {
        this.setState({
            value: amount,
            hasErrors: !isValid,
        });
    }
    private _onConvertClick() {
        if (this.state.hasErrors) {
            this.setState({
                shouldShowIncompleteErrs: true,
            });
        } else {
            const value = this.state.value;
            this.setState({
                value: undefined,
            });
            this.props.onComplete(this.props.direction, value);
        }
    }
    private _onCancel() {
        this.setState({
            value: undefined,
        });
        this.props.onCancelled();
    }
}