feat: Move over features from zrx-buyer

packages/instant/src/components/buy_button.tsx

@@ -1,19 +1,56 @@
+import { BuyQuote } from '@0xproject/asset-buyer';
+import * as _ from 'lodash';
 import * as React from 'react';
 
 import { ColorOption } from '../style/theme';
+import { assetBuyer } from '../util/asset_buyer';
+import { web3Wrapper } from '../util/web3_wrapper';
 
 import { Button, Container, Text } from './ui';
 
-export interface BuyButtonProps {}
+export interface BuyButtonProps {
+    buyQuote?: BuyQuote;
+    onClick: (buyQuote: BuyQuote) => void;
+    onBuySuccess: (buyQuote: BuyQuote) => void;
+    onBuyFailure: (buyQuote: BuyQuote) => void;
+    text: string;
+}
 
-export const BuyButton: React.StatelessComponent<BuyButtonProps> = props => (
-    <Container padding="20px" width="100%">
-        <Button width="100%">
-            <Text fontColor={ColorOption.white} fontWeight={600} fontSize="20px">
-                Buy
-            </Text>
-        </Button>
-    </Container>
-);
+const boundNoop = _.noop.bind(_);
 
-BuyButton.displayName = 'BuyButton';
+export class BuyButton extends React.Component<BuyButtonProps> {
+    public static defaultProps = {
+        onClick: boundNoop,
+        onBuySuccess: boundNoop,
+        onBuyFailure: boundNoop,
+    };
+    public render(): React.ReactNode {
+        const shouldDisableButton = _.isUndefined(this.props.buyQuote);
+        return (
+            <Container padding="20px" width="100%">
+                <Button width="100%" onClick={this._handleClick} isDisabled={shouldDisableButton}>
+                    <Text fontColor={ColorOption.white} fontWeight={600} fontSize="20px">
+                        {this.props.text}
+                    </Text>
+                </Button>
+            </Container>
+        );
+    }
+    private readonly _handleClick = async () => {
+        // The button is disabled when there is no buy quote anyway.
+        if (_.isUndefined(this.props.buyQuote)) {
+            return;
+        }
+        this.props.onClick(this.props.buyQuote);
+        try {
+            const txnHash = await assetBuyer.executeBuyQuoteAsync(this.props.buyQuote, {
+                // HACK: There is a calculation issue in asset-buyer. ETH is refunded anyway so just over-estimate.
+                ethAmount: this.props.buyQuote.worstCaseQuoteInfo.totalEthAmount.mul(2),
+            });
+            await web3Wrapper.awaitTransactionSuccessAsync(txnHash);
+        } catch {
+            this.props.onBuyFailure(this.props.buyQuote);
+        }
+        this.props.onBuySuccess(this.props.buyQuote);
+    };
+}

packages/instant/src/components/instant_heading.tsx

@@ -1,11 +1,42 @@
+import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as _ from 'lodash';
 import * as React from 'react';
 
+import { ethDecimals } from '../constants';
 import { SelectedAssetAmountInput } from '../containers/selected_asset_amount_input';
 import { ColorOption } from '../style/theme';
 
 import { Container, Flex, Text } from './ui';
 
-export interface InstantHeadingProps {}
+export interface InstantHeadingProps {
+    selectedAssetAmount?: BigNumber;
+    totalEthBaseAmount?: BigNumber;
+    ethUsdPrice?: BigNumber;
+}
+
+const displaytotalEthBaseAmount = ({ selectedAssetAmount, totalEthBaseAmount }: InstantHeadingProps): string => {
+    if (_.isUndefined(selectedAssetAmount)) {
+        return '0 ETH';
+    }
+    if (_.isUndefined(totalEthBaseAmount)) {
+        return '...loading';
+    }
+    const ethUnitAmount = Web3Wrapper.toUnitAmount(totalEthBaseAmount, ethDecimals);
+    const roundedAmount = ethUnitAmount.round(4);
+    return `${roundedAmount} ETH`;
+};
+
+const displayUsdAmount = ({ totalEthBaseAmount, selectedAssetAmount, ethUsdPrice }: InstantHeadingProps): string => {
+    if (_.isUndefined(selectedAssetAmount)) {
+        return '$0.00';
+    }
+    if (_.isUndefined(totalEthBaseAmount) || _.isUndefined(ethUsdPrice)) {
+        return '...loading';
+    }
+    const ethUnitAmount = Web3Wrapper.toUnitAmount(totalEthBaseAmount, ethDecimals);
+    return `$${ethUnitAmount.mul(ethUsdPrice).round(2)}`;
+};
 
 export const InstantHeading: React.StatelessComponent<InstantHeadingProps> = props => (
     <Container backgroundColor={ColorOption.primaryColor} padding="20px" width="100%" borderRadius="3px 3px 0px 0px">
@@ -26,18 +57,18 @@ export const InstantHeading: React.StatelessComponent<InstantHeadingProps> = pro
                 <SelectedAssetAmountInput fontSize="45px" />
                 <Container display="inline-block" marginLeft="10px">
                     <Text fontSize="45px" fontColor={ColorOption.white} textTransform="uppercase">
-                        rep
+                        zrx
                     </Text>
                 </Container>
             </Container>
             <Flex direction="column" justify="space-between">
                 <Container marginBottom="5px">
                     <Text fontSize="16px" fontColor={ColorOption.white} fontWeight={500}>
-                        0 ETH
+                        {displaytotalEthBaseAmount(props)}
                     </Text>
                 </Container>
                 <Text fontSize="16px" fontColor={ColorOption.white} opacity={0.7}>
-                    $0.00
+                    {displayUsdAmount(props)}
                 </Text>
             </Flex>
         </Flex>

packages/instant/src/components/zero_ex_instant.tsx

@@ -1,6 +1,7 @@
 import * as React from 'react';
 import { Provider } from 'react-redux';
 
+import { asyncData } from '../redux/async_data';
 import { store } from '../redux/store';
 import { fonts } from '../style/fonts';
 import { theme, ThemeProvider } from '../style/theme';
@@ -8,6 +9,7 @@ import { theme, ThemeProvider } from '../style/theme';
 import { ZeroExInstantContainer } from './zero_ex_instant_container';
 
 fonts.include();
+asyncData.fetchAndDispatchToStore();
 
 export interface ZeroExInstantProps {}
 

packages/instant/src/components/zero_ex_instant_container.tsx

@@ -1,5 +1,8 @@
 import * as React from 'react';
 
+import { SelectedAssetBuyButton } from '../containers/selected_asset_buy_button';
+import { SelectedAssetInstantHeading } from '../containers/selected_asset_instant_heading';
+
 import { ColorOption } from '../style/theme';
 
 import { BuyButton } from './buy_button';
@@ -12,9 +15,9 @@ export interface ZeroExInstantContainerProps {}
 export const ZeroExInstantContainer: React.StatelessComponent<ZeroExInstantContainerProps> = props => (
     <Container hasBoxShadow={true} width="350px" backgroundColor={ColorOption.white} borderRadius="3px">
         <Flex direction="column" justify="flex-start">
-            <InstantHeading />
+            <SelectedAssetInstantHeading />
             <OrderDetails />
-            <BuyButton />
+            <SelectedAssetBuyButton />
         </Flex>
     </Container>
 );

packages/instant/src/constants.ts

@@ -0,0 +1,4 @@
+export const sraApiUrl = 'https://api.radarrelay.com/0x/v2/';
+export const zrxContractAddress = '0xe41d2489571d322189246dafa5ebde1f4699f498';
+export const zrxDecimals = 18;
+export const ethDecimals = 18;

packages/instant/src/containers/selected_asset_amount_input.ts

@@ -0,0 +1,57 @@
+import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as _ from 'lodash';
+import * as React from 'react';
+import { connect } from 'react-redux';
+import { Dispatch } from 'redux';
+
+import { zrxContractAddress, zrxDecimals } from '../constants';
+import { State } from '../redux/reducer';
+import { ColorOption } from '../style/theme';
+import { Action, ActionTypes, AsyncProcessState } from '../types';
+import { assetBuyer } from '../util/asset_buyer';
+
+import { AmountInput } from '../components/amount_input';
+
+export interface SelectedAssetAmountInputProps {
+    fontColor?: ColorOption;
+    fontSize?: string;
+}
+
+interface ConnectedState {
+    value?: BigNumber;
+}
+
+interface ConnectedDispatch {
+    onChange?: (value?: BigNumber) => void;
+}
+
+const mapStateToProps = (state: State, _ownProps: SelectedAssetAmountInputProps): ConnectedState => ({
+    value: state.selectedAssetAmount,
+});
+
+const mapDispatchToProps = (dispatch: Dispatch<Action>): ConnectedDispatch => ({
+    onChange: async value => {
+        // Update the input
+        dispatch({ type: ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT, data: value });
+        // invalidate the last buy quote.
+        dispatch({ type: ActionTypes.UPDATE_LATEST_BUY_QUOTE, data: undefined });
+        // reset our buy state
+        dispatch({ type: ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE, data: AsyncProcessState.NONE });
+        if (!_.isUndefined(value)) {
+            // get a new buy quote.
+            const baseUnitValue = Web3Wrapper.toBaseUnitAmount(value, zrxDecimals);
+            const newBuyQuote = await assetBuyer.getBuyQuoteForERC20TokenAddressAsync(
+                zrxContractAddress,
+                baseUnitValue,
+            );
+            // invalidate the last buy quote.
+            dispatch({ type: ActionTypes.UPDATE_LATEST_BUY_QUOTE, data: newBuyQuote });
+        }
+    },
+});
+
+export const SelectedAssetAmountInput: React.ComponentClass<SelectedAssetAmountInputProps> = connect(
+    mapStateToProps,
+    mapDispatchToProps,
+)(AmountInput);

packages/instant/src/containers/selected_asset_amount_input.tsx

@@ -1,36 +0,0 @@
-import { BigNumber } from '@0xproject/utils';
-import * as React from 'react';
-import { connect } from 'react-redux';
-import { Dispatch } from 'redux';
-
-import { State } from '../redux/reducer';
-import { ColorOption } from '../style/theme';
-import { Action, ActionTypes } from '../types';
-
-import { AmountInput } from '../components/amount_input';
-
-export interface SelectedAssetAmountInputProps {
-    fontColor?: ColorOption;
-    fontSize?: string;
-}
-
-interface ConnectedState {
-    value?: BigNumber;
-}
-
-interface ConnectedDispatch {
-    onChange?: (value?: BigNumber) => void;
-}
-
-const mapStateToProps = (state: State, _ownProps: SelectedAssetAmountInputProps): ConnectedState => ({
-    value: state.selectedAssetAmount,
-});
-
-const mapDispatchToProps = (dispatch: Dispatch<Action>): ConnectedDispatch => ({
-    onChange: value => dispatch({ type: ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT, data: value }),
-});
-
-export const SelectedAssetAmountInput: React.ComponentClass<SelectedAssetAmountInputProps> = connect(
-    mapStateToProps,
-    mapDispatchToProps,
-)(AmountInput);

packages/instant/src/containers/selected_asset_buy_button.ts

@@ -0,0 +1,59 @@
+import { BuyQuote } from '@0xproject/asset-buyer';
+import * as _ from 'lodash';
+import * as React from 'react';
+import { connect } from 'react-redux';
+import { Dispatch } from 'redux';
+
+import { State } from '../redux/reducer';
+import { Action, ActionTypes, AsyncProcessState } from '../types';
+import { assetBuyer } from '../util/asset_buyer';
+import { web3Wrapper } from '../util/web3_wrapper';
+
+import { BuyButton } from '../components/buy_button';
+
+export interface SelectedAssetBuyButtonProps {}
+
+interface ConnectedState {
+    text: string;
+    buyQuote?: BuyQuote;
+}
+
+interface ConnectedDispatch {
+    onClick: (buyQuote: BuyQuote) => void;
+    onBuySuccess: (buyQuote: BuyQuote) => void;
+    onBuyFailure: (buyQuote: BuyQuote) => void;
+}
+
+const textForState = (state: AsyncProcessState): string => {
+    switch (state) {
+        case AsyncProcessState.NONE:
+            return 'Buy';
+        case AsyncProcessState.PENDING:
+            return '...Loading';
+        case AsyncProcessState.SUCCESS:
+            return 'Success!';
+        case AsyncProcessState.FAILURE:
+            return 'Failed';
+        default:
+            return 'Buy';
+    }
+};
+
+const mapStateToProps = (state: State, _ownProps: SelectedAssetBuyButtonProps): ConnectedState => ({
+    text: textForState(state.selectedAssetBuyState),
+    buyQuote: state.latestBuyQuote,
+});
+
+const mapDispatchToProps = (dispatch: Dispatch<Action>, ownProps: SelectedAssetBuyButtonProps): ConnectedDispatch => ({
+    onClick: buyQuote =>
+        dispatch({ type: ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE, data: AsyncProcessState.PENDING }),
+    onBuySuccess: buyQuote =>
+        dispatch({ type: ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE, data: AsyncProcessState.SUCCESS }),
+    onBuyFailure: buyQuote =>
+        dispatch({ type: ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE, data: AsyncProcessState.FAILURE }),
+});
+
+export const SelectedAssetBuyButton: React.ComponentClass<SelectedAssetBuyButtonProps> = connect(
+    mapStateToProps,
+    mapDispatchToProps,
+)(BuyButton);

packages/instant/src/containers/selected_asset_instant_heading.ts

@@ -0,0 +1,26 @@
+import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
+import * as React from 'react';
+import { connect } from 'react-redux';
+
+import { State } from '../redux/reducer';
+
+import { InstantHeading } from '../components/instant_heading';
+
+export interface InstantHeadingProps {}
+
+interface ConnectedState {
+    selectedAssetAmount?: BigNumber;
+    totalEthBaseAmount?: BigNumber;
+    ethUsdPrice?: BigNumber;
+}
+
+const mapStateToProps = (state: State, _ownProps: InstantHeadingProps): ConnectedState => ({
+    selectedAssetAmount: state.selectedAssetAmount,
+    totalEthBaseAmount: _.get(state, 'latestBuyQuote.worstCaseQuoteInfo.totalEthAmount'),
+    ethUsdPrice: state.ethUsdPrice,
+});
+
+export const SelectedAssetInstantHeading: React.ComponentClass<InstantHeadingProps> = connect(mapStateToProps)(
+    InstantHeading,
+);

packages/instant/src/redux/async_data.ts

@@ -0,0 +1,22 @@
+import { BigNumber } from '@0xproject/utils';
+
+import { ActionTypes } from '../types';
+import { coinbaseApi } from '../util/coinbase_api';
+
+import { store } from './store';
+
+export const asyncData = {
+    fetchAndDispatchToStore: async () => {
+        let ethUsdPriceStr = '0';
+        try {
+            ethUsdPriceStr = await coinbaseApi.getEthUsdPrice();
+        } catch (e) {
+            // ignore
+        } finally {
+            store.dispatch({
+                type: ActionTypes.UPDATE_ETH_USD_PRICE,
+                data: new BigNumber(ethUsdPriceStr),
+            });
+        }
+    },
+};

packages/instant/src/redux/reducer.ts

@@ -1,16 +1,21 @@
+import { BuyQuote } from '@0xproject/asset-buyer';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
-import { Action, ActionTypes } from '../types';
+import { Action, ActionTypes, AsyncProcessState } from '../types';
 
 export interface State {
-    ethUsdPrice?: string;
     selectedAssetAmount?: BigNumber;
+    selectedAssetBuyState: AsyncProcessState;
+    ethUsdPrice?: BigNumber;
+    latestBuyQuote?: BuyQuote;
 }
 
 export const INITIAL_STATE: State = {
     ethUsdPrice: undefined,
+    selectedAssetBuyState: AsyncProcessState.NONE,
     selectedAssetAmount: undefined,
+    latestBuyQuote: undefined,
 };
 
 export const reducer = (state: State = INITIAL_STATE, action: Action): State => {
@@ -25,6 +30,16 @@ export const reducer = (state: State = INITIAL_STATE, action: Action): State =>
                 ...state,
                 selectedAssetAmount: action.data,
             };
+        case ActionTypes.UPDATE_LATEST_BUY_QUOTE:
+            return {
+                ...state,
+                latestBuyQuote: action.data,
+            };
+        case ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE:
+            return {
+                ...state,
+                selectedAssetBuyState: action.data,
+            };
         default:
             return state;
     }

packages/instant/src/types.ts

@@ -1,6 +1,16 @@
+// Reusable
+export enum AsyncProcessState {
+    NONE,
+    PENDING,
+    SUCCESS,
+    FAILURE,
+}
+
 export enum ActionTypes {
     UPDATE_ETH_USD_PRICE,
     UPDATE_SELECTED_ASSET_AMOUNT,
+    UPDATE_SELECTED_ASSET_BUY_STATE,
+    UPDATE_LATEST_BUY_QUOTE,
 }
 
 export interface Action {

packages/instant/src/util/asset_buyer.ts

@@ -0,0 +1,11 @@
+import { AssetBuyer } from '@0xproject/asset-buyer';
+
+import { sraApiUrl } from '../constants';
+
+import { getProvider } from './provider';
+
+const provider = getProvider();
+
+export const assetBuyer = AssetBuyer.getAssetBuyerForStandardRelayerAPIUrl(provider, sraApiUrl, {
+    expiryBufferSeconds: 300,
+});

packages/instant/src/util/coinbase_api.ts

@@ -0,0 +1,8 @@
+const baseEndpoint = 'https://api.coinbase.com/v2';
+export const coinbaseApi = {
+    getEthUsdPrice: async (): Promise<string> => {
+        const res = await fetch(`${baseEndpoint}/prices/ETH-USD/buy`);
+        const resJson = await res.json();
+        return resJson.data.amount;
+    },
+};

packages/instant/src/util/provider.ts

@@ -0,0 +1,12 @@
+import { Provider } from 'ethereum-types';
+
+export const getProvider = (): Provider => {
+    const injectedWeb3 = (window as any).web3 || undefined;
+    try {
+        // Use MetaMask/Mist provider
+        return injectedWeb3.currentProvider;
+    } catch (err) {
+        // Throws when user doesn't have MetaMask/Mist running
+        throw new Error(`No injected web3 found: ${err}`);
+    }
+};

packages/instant/src/util/web3_wrapper.ts

@@ -0,0 +1,5 @@
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+
+import { getProvider } from './provider';
+
+export const web3Wrapper = new Web3Wrapper(getProvider());