Merge pull request #1272 from 0xProject/feature/instant/heap

[instant] Base heap integration

10 files changed, 336 insertions, 44 deletions

diff --git a/packages/instant/src/components/zero_ex_instant_provider.tsx b/packages/instant/src/components/zero_ex_instant_provider.tsx
index 8be53ee20..9435d8c7c 100644
--- a/packages/instant/src/components/zero_ex_instant_provider.tsx
+++ b/packages/instant/src/components/zero_ex_instant_provider.tsx
@@ -12,6 +12,7 @@ import { DEFAULT_STATE, DefaultState, State } from '../redux/reducer';
 import { store, Store } from '../redux/store';
 import { fonts } from '../style/fonts';
 import { AccountState, AffiliateInfo, AssetMetaData, Network, OrderSource } from '../types';
+import { analytics, disableAnalytics } from '../util/analytics';
 import { assetUtils } from '../util/asset';
 import { errorFlasher } from '../util/error_flasher';
 import { gasPriceEstimator } from '../util/gas_price_estimator';
@@ -36,6 +37,7 @@ export interface ZeroExInstantProviderOptionalProps {
     additionalAssetMetaDataMap: ObjectMap<AssetMetaData>;
     networkId: Network;
     affiliateInfo: AffiliateInfo;
+    shouldDisableAnalyticsTracking: boolean;
 }
 
 export class ZeroExInstantProvider extends React.Component<ZeroExInstantProviderProps> {
@@ -121,6 +123,18 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
         gasPriceEstimator.getGasInfoAsync();
         // tslint:disable-next-line:no-floating-promises
         this._flashErrorIfWrongNetwork();
+
+        // Analytics
+        disableAnalytics(this.props.shouldDisableAnalyticsTracking || false);
+        analytics.addEventProperties({
+            embeddedHost: window.location.host,
+            embeddedUrl: window.location.href,
+            networkId: state.network,
+            providerName: state.providerState.name,
+            gitSha: process.env.GIT_SHA,
+            npmVersion: process.env.NPM_PACKAGE_VERSION,
+        });
+        analytics.trackInstantOpened();
     }
     public componentWillUnmount(): void {
         if (this._accountUpdateHeartbeat) {
diff --git a/packages/instant/src/constants.ts b/packages/instant/src/constants.ts
index ad2d568fe..be6077ca9 100644
--- a/packages/instant/src/constants.ts
+++ b/packages/instant/src/constants.ts
@@ -16,6 +16,7 @@ export const BUY_QUOTE_UPDATE_INTERVAL_TIME_MS = ONE_SECOND_MS * 15;
 export const DEFAULT_GAS_PRICE = GWEI_IN_WEI.mul(6);
 export const DEFAULT_ESTIMATED_TRANSACTION_TIME_MS = ONE_MINUTE_MS * 2;
 export const ETH_GAS_STATION_API_BASE_URL = 'https://ethgasstation.info';
+export const HEAP_ANALYTICS_ID = process.env.HEAP_ANALYTICS_ID;
 export const COINBASE_API_BASE_URL = 'https://api.coinbase.com/v2';
 export const PROGRESS_STALL_AT_WIDTH = '95%';
 export const PROGRESS_FINISH_ANIMATION_TIME_MS = 200;
@@ -48,4 +49,5 @@ export const PROVIDER_TYPE_TO_NAME: { [key in ProviderType]: string } = {
     [ProviderType.Mist]: 'Mist',
     [ProviderType.CoinbaseWallet]: 'Coinbase Wallet',
     [ProviderType.Parity]: 'Parity',
+    [ProviderType.Fallback]: 'Fallback',
 };
diff --git a/packages/instant/src/index.umd.ts b/packages/instant/src/index.umd.ts
index 0274db30c..5010347b3 100644
--- a/packages/instant/src/index.umd.ts
+++ b/packages/instant/src/index.umd.ts
@@ -35,6 +35,9 @@ export const render = (props: ZeroExInstantOverlayProps, selector: string = DEFA
     if (!_.isUndefined(props.provider)) {
         assert.isWeb3Provider('props.provider', props.provider);
     }
+    if (!_.isUndefined(props.shouldDisableAnalyticsTracking)) {
+        assert.isBoolean('props.shouldDisableAnalyticsTracking', props.shouldDisableAnalyticsTracking);
+    }
     assert.isString('selector', selector);
     const appendToIfExists = document.querySelector(selector);
     assert.assert(!_.isNull(appendToIfExists), `Could not find div with selector: ${selector}`);
diff --git a/packages/instant/src/redux/analytics_middleware.ts b/packages/instant/src/redux/analytics_middleware.ts
new file mode 100644
index 000000000..f971dbd33
--- /dev/null
+++ b/packages/instant/src/redux/analytics_middleware.ts
@@ -0,0 +1,59 @@
+import { Web3Wrapper } from '@0x/web3-wrapper';
+import * as _ from 'lodash';
+import { Middleware } from 'redux';
+
+import { ETH_DECIMALS } from '../constants';
+import { Account, AccountState } from '../types';
+import { analytics } from '../util/analytics';
+
+import { Action, ActionTypes } from './actions';
+
+import { State } from './reducer';
+
+const shouldTriggerWalletReady = (prevAccount: Account, curAccount: Account): boolean => {
+    const didJustTurnReady = curAccount.state === AccountState.Ready && prevAccount.state !== AccountState.Ready;
+    if (didJustTurnReady) {
+        return true;
+    }
+
+    if (curAccount.state === AccountState.Ready && prevAccount.state === AccountState.Ready) {
+        // Account was ready, and is now ready again, but address has changed
+        return curAccount.address !== prevAccount.address;
+    }
+
+    return false;
+};
+
+export const analyticsMiddleware: Middleware = store => next => middlewareAction => {
+    const prevState = store.getState() as State;
+    const prevAccount = prevState.providerState.account;
+
+    const nextAction = next(middlewareAction) as Action;
+
+    const curState = store.getState() as State;
+    const curAccount = curState.providerState.account;
+
+    switch (nextAction.type) {
+        case ActionTypes.SET_ACCOUNT_STATE_READY:
+            if (curAccount.state === AccountState.Ready && shouldTriggerWalletReady(prevAccount, curAccount)) {
+                const ethAddress = curAccount.address;
+                analytics.addUserProperties({ ethAddress });
+                analytics.trackWalletReady();
+            }
+            break;
+        case ActionTypes.UPDATE_ACCOUNT_ETH_BALANCE:
+            if (
+                curAccount.state === AccountState.Ready &&
+                curAccount.ethBalanceInWei &&
+                !_.isEqual(curAccount, prevAccount)
+            ) {
+                const ethBalanceInUnitAmount = Web3Wrapper.toUnitAmount(
+                    curAccount.ethBalanceInWei,
+                    ETH_DECIMALS,
+                ).toString();
+                analytics.addUserProperties({ ethBalanceInUnitAmount });
+            }
+    }
+
+    return nextAction;
+};
diff --git a/packages/instant/src/redux/store.ts b/packages/instant/src/redux/store.ts
index 20710765d..11bba3876 100644
--- a/packages/instant/src/redux/store.ts
+++ b/packages/instant/src/redux/store.ts
@@ -1,7 +1,8 @@
 import * as _ from 'lodash';
-import { createStore, Store as ReduxStore } from 'redux';
-import { devToolsEnhancer } from 'redux-devtools-extension/developmentOnly';
+import { applyMiddleware, createStore, Store as ReduxStore } from 'redux';
+import { composeWithDevTools } from 'redux-devtools-extension/developmentOnly';
 
+import { analyticsMiddleware } from './analytics_middleware';
 import { createReducer, State } from './reducer';
 
 export type Store = ReduxStore<State>;
@@ -9,6 +10,6 @@ export type Store = ReduxStore<State>;
 export const store = {
     create: (initialState: State): Store => {
         const reducer = createReducer(initialState);
-        return createStore(reducer, initialState, devToolsEnhancer({}));
+        return createStore(reducer, initialState, composeWithDevTools(applyMiddleware(analyticsMiddleware)));
     },
 };
diff --git a/packages/instant/src/types.ts b/packages/instant/src/types.ts
index 2d4a8a850..999d50fed 100644
--- a/packages/instant/src/types.ts
+++ b/packages/instant/src/types.ts
@@ -165,4 +165,5 @@ export enum ProviderType {
     Mist = 'MIST',
     CoinbaseWallet = 'COINBASE_WALLET',
     Cipher = 'CIPHER',
+    Fallback = 'FALLBACK',
 }
diff --git a/packages/instant/src/util/analytics.ts b/packages/instant/src/util/analytics.ts
new file mode 100644
index 000000000..2ffaac1dd
--- /dev/null
+++ b/packages/instant/src/util/analytics.ts
@@ -0,0 +1,64 @@
+import { ObjectMap } from '@0x/types';
+
+import { heapUtil } from './heap';
+
+let isDisabled = false;
+export const disableAnalytics = (shouldDisableAnalytics: boolean) => {
+    isDisabled = shouldDisableAnalytics;
+};
+export const evaluateIfEnabled = (fnCall: () => void) => {
+    if (isDisabled) {
+        return;
+    }
+    fnCall();
+};
+
+enum EventNames {
+    INSTANT_OPENED = 'Instant - Opened',
+    WALLET_READY = 'Wallet - Ready',
+}
+const track = (eventName: EventNames, eventData: ObjectMap<string | number> = {}): void => {
+    evaluateIfEnabled(() => {
+        heapUtil.evaluateHeapCall(heap => heap.track(eventName, eventData));
+    });
+};
+function trackingEventFnWithoutPayload(eventName: EventNames): () => void {
+    return () => {
+        track(eventName);
+    };
+}
+// tslint:disable-next-line:no-unused-variable
+function trackingEventFnWithPayload<T extends ObjectMap<string | number>>(
+    eventName: EventNames,
+): (eventDataProperties: T) => void {
+    return (eventDataProperties: T) => {
+        track(eventName, eventDataProperties);
+    };
+}
+
+export interface AnalyticsUserOptions {
+    ethAddress?: string;
+    ethBalanceInUnitAmount?: string;
+}
+export interface AnalyticsEventOptions {
+    embeddedHost?: string;
+    embeddedUrl?: string;
+    networkId?: number;
+    providerName?: string;
+    gitSha?: string;
+    npmVersion?: string;
+}
+export const analytics = {
+    addUserProperties: (properties: AnalyticsUserOptions): void => {
+        evaluateIfEnabled(() => {
+            heapUtil.evaluateHeapCall(heap => heap.addUserProperties(properties));
+        });
+    },
+    addEventProperties: (properties: AnalyticsEventOptions): void => {
+        evaluateIfEnabled(() => {
+            heapUtil.evaluateHeapCall(heap => heap.addEventProperties(properties));
+        });
+    },
+    trackWalletReady: trackingEventFnWithoutPayload(EventNames.WALLET_READY),
+    trackInstantOpened: trackingEventFnWithoutPayload(EventNames.INSTANT_OPENED),
+};
diff --git a/packages/instant/src/util/heap.ts b/packages/instant/src/util/heap.ts
new file mode 100644
index 000000000..78ec3b3cc
--- /dev/null
+++ b/packages/instant/src/util/heap.ts
@@ -0,0 +1,113 @@
+import { ObjectMap } from '@0x/types';
+import { logUtils } from '@0x/utils';
+import * as _ from 'lodash';
+
+import { HEAP_ANALYTICS_ID } from '../constants';
+
+import { AnalyticsEventOptions, AnalyticsUserOptions } from './analytics';
+
+export interface HeapAnalytics {
+    loaded: boolean;
+    appid: string;
+    identify(id: string, idType: string): void;
+    track(eventName: string, eventProperties?: ObjectMap<string | number>): void;
+    resetIdentity(): void;
+    addUserProperties(properties: AnalyticsUserOptions): void;
+    addEventProperties(properties: AnalyticsEventOptions): void;
+    removeEventProperty(property: string): void;
+    clearEventProperties(): void;
+}
+interface ModifiedWindow {
+    heap?: HeapAnalytics;
+    zeroExInstantLoadedHeap?: boolean;
+}
+const getWindow = (): ModifiedWindow => {
+    return window as ModifiedWindow;
+};
+
+const setupZeroExInstantHeap = () => {
+    if (_.isUndefined(HEAP_ANALYTICS_ID)) {
+        return;
+    }
+
+    const curWindow = getWindow();
+    // Set property to specify that this is zeroEx's heap
+    curWindow.zeroExInstantLoadedHeap = true;
+
+    // Typescript-compatible version of https://docs.heapanalytics.com/docs/installation
+    /* tslint:disable */
+    ((window as any).heap = (window as any).heap || []),
+        ((window as any).heap.load = function(e: any, t: any) {
+            ((window as any).heap.appid = e), ((window as any).heap.config = t = t || {});
+            var r = t.forceSSL || 'https:' === (document.location as Location).protocol,
+                a = document.createElement('script');
+            (a.type = 'text/javascript'),
+                (a.async = !0),
+                (a.src = (r ? 'https:' : 'http:') + '//cdn.heapanalytics.com/js/heap-' + e + '.js');
+            var n = document.getElementsByTagName('script')[0];
+            (n.parentNode as Node).insertBefore(a, n);
+            for (
+                var o = function(e: any) {
+                        return function() {
+                            (window as any).heap.push([e].concat(Array.prototype.slice.call(arguments, 0)));
+                        };
+                    },
+                    p = [
+                        'addEventProperties',
+                        'addUserProperties',
+                        'clearEventProperties',
+                        'identify',
+                        'resetIdentity',
+                        'removeEventProperty',
+                        'setEventProperties',
+                        'track',
+                        'unsetEventProperty',
+                    ],
+                    c = 0;
+                c < p.length;
+                c++
+            )
+                (window as any).heap[p[c]] = o(p[c]);
+        });
+    (window as any).heap.load(HEAP_ANALYTICS_ID);
+    /* tslint:enable */
+
+    return curWindow.heap as HeapAnalytics;
+};
+
+export const heapUtil = {
+    getHeap: (): HeapAnalytics | undefined => {
+        const curWindow = getWindow();
+        const hasOtherExistingHeapIntegration = curWindow.heap && !curWindow.zeroExInstantLoadedHeap;
+        if (hasOtherExistingHeapIntegration) {
+            return undefined;
+        }
+
+        const zeroExInstantHeapIntegration = curWindow.zeroExInstantLoadedHeap && curWindow.heap;
+        if (zeroExInstantHeapIntegration) {
+            return zeroExInstantHeapIntegration;
+        }
+
+        return setupZeroExInstantHeap();
+    },
+    evaluateHeapCall: (heapFunctionCall: (heap: HeapAnalytics) => void): void => {
+        if (_.isUndefined(HEAP_ANALYTICS_ID)) {
+            return;
+        }
+
+        const curHeap = heapUtil.getHeap();
+        if (curHeap) {
+            try {
+                if (curHeap.appid !== HEAP_ANALYTICS_ID) {
+                    // Integrator has included heap after us and reset the app id
+                    return;
+                }
+                heapFunctionCall(curHeap);
+            } catch (e) {
+                // We never want analytics to crash our React component
+                // TODO(sk): error reporter here
+                logUtils.log('Analytics error', e);
+            }
+        }
+    },
+};
diff --git a/packages/instant/src/util/provider_state_factory.ts b/packages/instant/src/util/provider_state_factory.ts
index 452a71460..7c788dff2 100644
--- a/packages/instant/src/util/provider_state_factory.ts
+++ b/packages/instant/src/util/provider_state_factory.ts
@@ -56,7 +56,7 @@ export const providerStateFactory = {
     getInitialProviderStateFallback: (orderSource: OrderSource, network: Network): ProviderState => {
         const provider = providerFactory.getFallbackNoSigningProvider(network);
         const providerState: ProviderState = {
-            name: envUtil.getProviderName(provider),
+            name: 'Fallback',
             provider,
             web3Wrapper: new Web3Wrapper(provider),
             assetBuyer: assetBuyerFactory.getAssetBuyer(provider, orderSource, network),
diff --git a/packages/instant/webpack.config.js b/packages/instant/webpack.config.js
index fae303712..41276809c 100644
--- a/packages/instant/webpack.config.js
+++ b/packages/instant/webpack.config.js
@@ -1,46 +1,81 @@
-const path = require('path');
+const childProcess = require('child_process');
 const ip = require('ip');
+const path = require('path');
+const webpack = require('webpack');
+
 // The common js bundle (not this one) is built using tsc.
 // The umd bundle (this one) has a different entrypoint.
-const outputPath = process.env.WEBPACK_OUTPUT_PATH || 'umd';
-const config = {
-    entry: {
-        instant: './src/index.umd.ts',
-    },
-    output: {
-        filename: '[name].js',
-        path: path.resolve(__dirname, outputPath),
-        library: 'zeroExInstant',
-        libraryTarget: 'umd',
-    },
-    devtool: 'source-map',
-    resolve: {
-        extensions: ['.js', '.json', '.ts', '.tsx'],
-    },
-    module: {
-        rules: [
-            {
-                test: /\.(ts|tsx)$/,
-                loader: 'awesome-typescript-loader',
-            },
-            {
-                test: /\.svg$/,
-                loader: 'svg-react-loader',
-            },
+
+const GIT_SHA = childProcess
+    .execSync('git rev-parse HEAD')
+    .toString()
+    .trim();
+
+const HEAP_PRODUCTION_ENV_VAR_NAME = 'INSTANT_HEAP_ANALYTICS_ID_PRODUCTION';
+const HEAP_DEVELOPMENT_ENV_VAR_NAME = 'INSTANT_HEAP_ANALYTICS_ID_DEVELOPMENT';
+const getHeapAnalyticsId = modeName => {
+    if (modeName === 'production') {
+        return process.env[HEAP_PRODUCTION_ENV_VAR_NAME];
+    }
+
+    if (modeName === 'development') {
+        return process.env[HEAP_DEVELOPMENT_ENV_VAR_NAME];
+    }
+
+    return undefined;
+};
+
+module.exports = (env, argv) => {
+    const outputPath = process.env.WEBPACK_OUTPUT_PATH || 'umd';
+    const config = {
+        entry: {
+            instant: './src/index.umd.ts',
+        },
+        output: {
+            filename: '[name].js',
+            path: path.resolve(__dirname, outputPath),
+            library: 'zeroExInstant',
+            libraryTarget: 'umd',
+        },
+        plugins: [
+            new webpack.DefinePlugin({
+                'process.env': {
+                    GIT_SHA: JSON.stringify(GIT_SHA),
+                    HEAP_ANALYTICS_ID: getHeapAnalyticsId(argv.mode),
+                    NPM_PACKAGE_VERSION: JSON.stringify(process.env.npm_package_version),
+                },
+            }),
         ],
-    },
-    devServer: {
-        contentBase: path.join(__dirname, 'public'),
-        port: 5000,
-        host: '0.0.0.0',
-        after: () => {
-            if (config.devServer.host === '0.0.0.0') {
-                console.log(
-                    `webpack-dev-server can be accessed externally at: http://${ip.address()}:${config.devServer.port}`,
-                );
-            }
+        devtool: 'source-map',
+        resolve: {
+            extensions: ['.js', '.json', '.ts', '.tsx'],
         },
-    },
+        module: {
+            rules: [
+                {
+                    test: /\.(ts|tsx)$/,
+                    loader: 'awesome-typescript-loader',
+                },
+                {
+                    test: /\.svg$/,
+                    loader: 'svg-react-loader',
+                },
+            ],
+        },
+        devServer: {
+            contentBase: path.join(__dirname, 'public'),
+            port: 5000,
+            host: '0.0.0.0',
+            after: () => {
+                if (config.devServer.host === '0.0.0.0') {
+                    console.log(
+                        `webpack-dev-server can be accessed externally at: http://${ip.address()}:${
+                            config.devServer.port
+                        }`,
+                    );
+                }
+            },
+        },
+    };
+    return config;
 };
-
-module.exports = config;