import * as _ from 'lodash';
import Dialog from 'material-ui/Dialog';
import FlatButton from 'material-ui/FlatButton';
import * as React from 'react';
import { Blockchain } from 'ts/blockchain';
import { BlockchainErrs } from 'ts/types';
import { colors } from 'ts/utils/colors';
import { configs } from 'ts/utils/configs';
import { constants } from 'ts/utils/constants';

interface BlockchainErrDialogProps {
    blockchain: Blockchain;
    blockchainErr: BlockchainErrs;
    isOpen: boolean;
    userAddress: string;
    toggleDialogFn: (isOpen: boolean) => void;
    networkId: number;
}

export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProps, undefined> {
    public render() {
        const dialogActions = [
            <FlatButton
                key="blockchainErrOk"
                label="Ok"
                primary={true}
                onTouchTap={this.props.toggleDialogFn.bind(this.props.toggleDialogFn, false)}
            />,
        ];

        const hasWalletAddress = this.props.userAddress !== '';
        return (
            <Dialog
                title={this._getTitle(hasWalletAddress)}
                titleStyle={{ fontWeight: 100 }}
                actions={dialogActions}
                open={this.props.isOpen}
                contentStyle={{ width: 400 }}
                onRequestClose={this.props.toggleDialogFn.bind(this.props.toggleDialogFn, false)}
                autoScrollBodyContent={true}
            >
                <div className="pt2" style={{ color: colors.grey700 }}>
                    {this._renderExplanation(hasWalletAddress)}
                </div>
            </Dialog>
        );
    }
    private _getTitle(hasWalletAddress: boolean) {
        if (this.props.blockchainErr === BlockchainErrs.AContractNotDeployedOnNetwork) {
            return '0x smart contracts not found';
        } else if (!hasWalletAddress) {
            return 'Enable wallet communication';
        } else if (this.props.blockchainErr === BlockchainErrs.DisconnectedFromEthereumNode) {
            return 'Disconnected from Ethereum network';
        } else {
            return 'Unexpected error';
        }
    }
    private _renderExplanation(hasWalletAddress: boolean) {
        if (this.props.blockchainErr === BlockchainErrs.AContractNotDeployedOnNetwork) {
            return this._renderContractsNotDeployedExplanation();
        } else if (!hasWalletAddress) {
            return this._renderNoWalletFoundExplanation();
        } else if (this.props.blockchainErr === BlockchainErrs.DisconnectedFromEthereumNode) {
            return this._renderDisconnectedFromNode();
        } else {
            return this._renderUnexpectedErrorExplanation();
        }
    }
    private _renderDisconnectedFromNode() {
        return (
            <div>
                You were disconnected from the backing Ethereum node. If using{' '}
                <a href={constants.URL_METAMASK_CHROME_STORE} target="_blank">
                    Metamask
                </a>{' '}
                or{' '}
                <a href={constants.URL_MIST_DOWNLOAD} target="_blank">
                    Mist
                </a>{' '}
                try refreshing the page. If using a locally hosted Ethereum node, make sure it's still running.
            </div>
        );
    }
    private _renderUnexpectedErrorExplanation() {
        return <div>We encountered an unexpected error. Please try refreshing the page.</div>;
    }
    private _renderNoWalletFoundExplanation() {
        return (
            <div>
                <div>
                    We were unable to access an Ethereum wallet you control. In order to interact with the 0x portal
                    dApp, we need a way to interact with one of your Ethereum wallets. There are two easy ways you can
                    enable us to do that:
                </div>
                <h4>1. Metamask chrome extension</h4>
                <div>
                    You can install the{' '}
                    <a href={constants.URL_METAMASK_CHROME_STORE} target="_blank">
                        Metamask
                    </a>{' '}
                    Chrome extension Ethereum wallet. Once installed and set up, refresh this page.
                    <div className="pt1">
                        <span className="bold">Note:</span> If you already have Metamask installed, make sure it is
                        unlocked.
                    </div>
                </div>
                <h4>Parity Signer</h4>
                <div>
                    The{' '}
                    <a href={constants.URL_PARITY_CHROME_STORE} target="_blank">
                        Parity Signer Chrome extension
                    </a>{' '}
                    lets you connect to a locally running Parity node. Make sure you have started your local Parity node
                    with {configs.IS_MAINNET_ENABLED && '`parity ui` or'} `parity --chain kovan ui` in order to connect
                    to {configs.IS_MAINNET_ENABLED ? 'mainnet or Kovan respectively.' : 'Kovan.'}
                </div>
                <div className="pt2">
                    <span className="bold">Note:</span> If you have done one of the above steps and are still seeing
                    this message, we might still be unable to retrieve an Ethereum address by calling
                    `web3.eth.accounts`. Make sure you have created at least one Ethereum address.
                </div>
            </div>
        );
    }
    private _renderContractsNotDeployedExplanation() {
        return (
            <div>
                <div>
                    The 0x smart contracts are not deployed on the Ethereum network you are currently connected to
                    (network Id: {this.props.networkId}). In order to use the 0x portal dApp, please connect to the{' '}
                    {constants.TESTNET_NAME} testnet (network Id: {constants.NETWORK_ID_TESTNET})
                    {configs.IS_MAINNET_ENABLED
                        ? ` or ${constants.MAINNET_NAME} (network Id: ${constants.NETWORK_ID_MAINNET}).`
                        : `.`}
                </div>
                <h4>Metamask</h4>
                <div>
                    If you are using{' '}
                    <a href={constants.URL_METAMASK_CHROME_STORE} target="_blank">
                        Metamask
                    </a>, you can switch networks in the top left corner of the extension popover.
                </div>
                <h4>Parity Signer</h4>
                <div>
                    If using the{' '}
                    <a href={constants.URL_PARITY_CHROME_STORE} target="_blank">
                        Parity Signer Chrome extension
                    </a>, make sure to start your local Parity node with{' '}
                    {configs.IS_MAINNET_ENABLED
                        ? '`parity ui` or `parity --chain Kovan ui` in order to connect to mainnet \
                         or Kovan respectively.'
                        : '`parity --chain kovan ui` in order to connect to Kovan.'}
                </div>
            </div>
        );
    }
}