feat: model asset meta data and add dynamic assetData state

9 files changed, 121 insertions, 27 deletions

diff --git a/packages/instant/package.json b/packages/instant/package.json
index ff40ba2ea..35cc39d27 100644
--- a/packages/instant/package.json
+++ b/packages/instant/package.json
@@ -44,6 +44,7 @@
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/instant/README.md",
     "dependencies": {
         "@0xproject/asset-buyer": "^2.0.0",
+        "@0xproject/order-utils": "^1.0.7",
         "@0xproject/types": "^1.1.4",
         "@0xproject/typescript-typings": "^2.0.2",
         "@0xproject/utils": "^2.0.2",
diff --git a/packages/instant/src/components/amount_input.tsx b/packages/instant/src/components/amount_input.tsx
index a2113f143..5b81a3d68 100644
--- a/packages/instant/src/components/amount_input.tsx
+++ b/packages/instant/src/components/amount_input.tsx
@@ -10,10 +10,13 @@ export interface AmountInputProps {
     fontColor?: ColorOption;
     fontSize?: string;
     value?: BigNumber;
-    onChange?: (value?: BigNumber) => void;
+    onChange: (value?: BigNumber) => void;
 }
 
 export class AmountInput extends React.Component<AmountInputProps> {
+    public static defaultProps = {
+        onChange: _.noop.bind(_),
+    };
     public render(): React.ReactNode {
         const { fontColor, fontSize, value } = this.props;
         return (
@@ -40,8 +43,6 @@ export class AmountInput extends React.Component<AmountInputProps> {
                 return;
             }
         }
-        if (!_.isUndefined(this.props.onChange)) {
-            this.props.onChange(bigNumberValue);
-        }
+        this.props.onChange(bigNumberValue);
     };
 }
diff --git a/packages/instant/src/components/asset_amount_input.tsx b/packages/instant/src/components/asset_amount_input.tsx
new file mode 100644
index 000000000..915c66e1e
--- /dev/null
+++ b/packages/instant/src/components/asset_amount_input.tsx
@@ -0,0 +1,51 @@
+import { AssetProxyId } from '@0xproject/types';
+import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
+import * as React from 'react';
+
+import { assetMetaData } from '../data/asset_meta_data';
+import { ColorOption } from '../style/theme';
+
+import { AmountInput, AmountInputProps } from './amount_input';
+import { Container, Text } from './ui';
+
+export interface AssetAmountInputProps extends AmountInputProps {
+    assetData?: string;
+    onChange: (value?: BigNumber, assetData?: string) => void;
+}
+
+export class AssetAmountInput extends React.Component<AssetAmountInputProps> {
+    public static defaultProps = {
+        onChange: _.noop.bind(_),
+    };
+    public render(): React.ReactNode {
+        const { assetData, onChange, ...rest } = this.props;
+        return (
+            <Container>
+                <AmountInput {...rest} onChange={this._handleChange} />
+                <Container display="inline-block" marginLeft="10px">
+                    <Text fontSize={rest.fontSize} fontColor={ColorOption.white} textTransform="uppercase">
+                        {this._getLabel()}
+                    </Text>
+                </Container>
+            </Container>
+        );
+    }
+    private readonly _getLabel = (): string => {
+        const unknownLabel = '???';
+        if (_.isUndefined(this.props.assetData)) {
+            return unknownLabel;
+        }
+        const metaData = assetMetaData[this.props.assetData];
+        if (_.isUndefined(metaData)) {
+            return unknownLabel;
+        }
+        if (metaData.assetProxyId === AssetProxyId.ERC20) {
+            return metaData.symbol;
+        }
+        return unknownLabel;
+    };
+    private readonly _handleChange = (value?: BigNumber): void => {
+        this.props.onChange(value, this.props.assetData);
+    };
+}
diff --git a/packages/instant/src/components/instant_heading.tsx b/packages/instant/src/components/instant_heading.tsx
index 377bb20bf..492c1b2c0 100644
--- a/packages/instant/src/components/instant_heading.tsx
+++ b/packages/instant/src/components/instant_heading.tsx
@@ -43,14 +43,7 @@ export const InstantHeading: React.StatelessComponent<InstantHeadingProps> = pro
             </Text>
         </Container>
         <Flex direction="row" justify="space-between">
-            <Container>
-                <SelectedAssetAmountInput fontSize="45px" />
-                <Container display="inline-block" marginLeft="10px">
-                    <Text fontSize="45px" fontColor={ColorOption.white} textTransform="uppercase">
-                        zrx
-                    </Text>
-                </Container>
-            </Container>
+            <SelectedAssetAmountInput fontSize="45px" />
             <Flex direction="column" justify="space-between">
                 <Container marginBottom="5px">
                     <Text fontSize="16px" fontColor={ColorOption.white} fontWeight={500}>
diff --git a/packages/instant/src/constants.ts b/packages/instant/src/constants.ts
index 75afc474a..1fd321c5a 100644
--- a/packages/instant/src/constants.ts
+++ b/packages/instant/src/constants.ts
@@ -1,6 +1,6 @@
 import { BigNumber } from '@0xproject/utils';
 export const BIG_NUMBER_ZERO = new BigNumber(0);
 export const sraApiUrl = 'https://api.radarrelay.com/0x/v2/';
-export const zrxContractAddress = '0xe41d2489571d322189246dafa5ebde1f4699f498';
+export const zrxAssetData = '0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498';
 export const zrxDecimals = 18;
 export const ethDecimals = 18;
diff --git a/packages/instant/src/containers/selected_asset_amount_input.ts b/packages/instant/src/containers/selected_asset_amount_input.ts
index 9e3063ecc..f2ca96ae4 100644
--- a/packages/instant/src/containers/selected_asset_amount_input.ts
+++ b/packages/instant/src/containers/selected_asset_amount_input.ts
@@ -5,14 +5,14 @@ import * as React from 'react';
 import { connect } from 'react-redux';
 import { Dispatch } from 'redux';
 
-import { zrxContractAddress, zrxDecimals } from '../constants';
+import { zrxDecimals } from '../constants';
 import { Action, actions } from '../redux/actions';
 import { State } from '../redux/reducer';
 import { ColorOption } from '../style/theme';
 import { AsyncProcessState } from '../types';
 import { assetBuyer } from '../util/asset_buyer';
 
-import { AmountInput } from '../components/amount_input';
+import { AssetAmountInput } from '../components/asset_amount_input';
 
 export interface SelectedAssetAmountInputProps {
     fontColor?: ColorOption;
@@ -21,31 +21,40 @@ export interface SelectedAssetAmountInputProps {
 
 interface ConnectedState {
     value?: BigNumber;
+    assetData?: string;
 }
 
 interface ConnectedDispatch {
-    onChange?: (value?: BigNumber) => void;
+    onChange: (value?: BigNumber, assetData?: string) => void;
 }
 
 const mapStateToProps = (state: State, _ownProps: SelectedAssetAmountInputProps): ConnectedState => ({
     value: state.selectedAssetAmount,
+    assetData: state.selectedAssetData,
 });
 
-const updateBuyQuote = async (dispatch: Dispatch<Action>, assetAmount?: BigNumber): Promise<void> => {
-    if (_.isUndefined(assetAmount)) {
+const updateBuyQuoteAsync = async (
+    dispatch: Dispatch<Action>,
+    assetData?: string,
+    assetAmount?: BigNumber,
+): Promise<void> => {
+    if (_.isUndefined(assetAmount) || _.isUndefined(assetData)) {
         return;
     }
     // get a new buy quote.
     const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, zrxDecimals);
-    const newBuyQuote = await assetBuyer.getBuyQuoteForERC20TokenAddressAsync(zrxContractAddress, baseUnitValue);
+    const newBuyQuote = await assetBuyer.getBuyQuoteAsync(assetData, baseUnitValue);
     // invalidate the last buy quote.
     dispatch(actions.updateLatestBuyQuote(newBuyQuote));
 };
 
-const debouncedUpdateBuyQuote = _.debounce(updateBuyQuote, 200, { trailing: true });
+const debouncedUpdateBuyQuoteAsync = _.debounce(updateBuyQuoteAsync, 200, { trailing: true });
 
-const mapDispatchToProps = (dispatch: Dispatch<Action>): ConnectedDispatch => ({
-    onChange: async value => {
+const mapDispatchToProps = (
+    dispatch: Dispatch<Action>,
+    _ownProps: SelectedAssetAmountInputProps,
+): ConnectedDispatch => ({
+    onChange: (value, assetData) => {
         // Update the input
         dispatch(actions.updateSelectedAssetAmount(value));
         // invalidate the last buy quote.
@@ -53,11 +62,11 @@ const mapDispatchToProps = (dispatch: Dispatch<Action>): ConnectedDispatch => ({
         // reset our buy state
         dispatch(actions.updateSelectedAssetBuyState(AsyncProcessState.NONE));
         // tslint:disable-next-line:no-floating-promises
-        debouncedUpdateBuyQuote(dispatch, value);
+        debouncedUpdateBuyQuoteAsync(dispatch, assetData, value);
     },
 });
 
 export const SelectedAssetAmountInput: React.ComponentClass<SelectedAssetAmountInputProps> = connect(
     mapStateToProps,
     mapDispatchToProps,
-)(AmountInput);
+)(AssetAmountInput);
diff --git a/packages/instant/src/data/asset_meta_data.ts b/packages/instant/src/data/asset_meta_data.ts
new file mode 100644
index 000000000..e4d3e8f73
--- /dev/null
+++ b/packages/instant/src/data/asset_meta_data.ts
@@ -0,0 +1,15 @@
+import { AssetProxyId, ObjectMap } from '@0xproject/types';
+
+import { zrxAssetData } from '../constants';
+import { AssetMetaData } from '../types';
+
+// Map from assetData string to AssetMetaData object
+// TODO: import this from somewhere else.
+export const assetMetaData: ObjectMap<AssetMetaData> = {
+    [zrxAssetData]: {
+        assetProxyId: AssetProxyId.ERC20,
+        decimals: 18,
+        primaryColor: 'rgb(54, 50, 60)',
+        symbol: 'zrx',
+    },
+};
diff --git a/packages/instant/src/redux/reducer.ts b/packages/instant/src/redux/reducer.ts
index 56a4ee236..adecf2ab7 100644
--- a/packages/instant/src/redux/reducer.ts
+++ b/packages/instant/src/redux/reducer.ts
@@ -2,11 +2,13 @@ import { BuyQuote } from '@0xproject/asset-buyer';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
+import { zrxAssetData } from '../constants';
 import { AsyncProcessState } from '../types';
 
 import { Action, ActionTypes } from './actions';
 
 export interface State {
+    selectedAssetData?: string;
     selectedAssetAmount?: BigNumber;
     selectedAssetBuyState: AsyncProcessState;
     ethUsdPrice?: BigNumber;
@@ -14,9 +16,11 @@ export interface State {
 }
 
 export const INITIAL_STATE: State = {
-    ethUsdPrice: undefined,
-    selectedAssetBuyState: AsyncProcessState.NONE,
+    // TODO: Remove hardcoded zrxAssetData
+    selectedAssetData: zrxAssetData,
     selectedAssetAmount: undefined,
+    selectedAssetBuyState: AsyncProcessState.NONE,
+    ethUsdPrice: undefined,
     latestBuyQuote: undefined,
 };
 
diff --git a/packages/instant/src/types.ts b/packages/instant/src/types.ts
index ffa5d679e..bf3ee392f 100644
--- a/packages/instant/src/types.ts
+++ b/packages/instant/src/types.ts
@@ -1,4 +1,4 @@
-import { ObjectMap } from '@0xproject/types';
+import { AssetProxyId, ObjectMap } from '@0xproject/types';
 
 // Reusable
 export enum AsyncProcessState {
@@ -11,3 +11,23 @@ export enum AsyncProcessState {
 export type FunctionType = (...args: any[]) => any;
 export type ActionCreatorsMapObject = ObjectMap<FunctionType>;
 export type ActionsUnion<A extends ActionCreatorsMapObject> = ReturnType<A[keyof A]>;
+
+export interface ERC20AssetMetaData {
+    assetProxyId: AssetProxyId.ERC20;
+    decimals: number;
+    primaryColor?: string;
+    symbol: string;
+}
+
+export interface ERC721AssetMetaData {
+    assetProxyId: AssetProxyId.ERC721;
+    name: string;
+    primaryColor?: string;
+}
+
+export type AssetMetaData = ERC20AssetMetaData | ERC721AssetMetaData;
+
+export enum Network {
+    Kovan = 42,
+    Mainnet = 1,
+}