feat: optimize page view after session start

package.json

@@ -18,9 +18,7 @@
     "format": "npx prettier --check 'src/**/*.{js,ts}'",
     "lint": "npx eslint src",
     "test": "npm run prebuild && npx jest -w 1 --coverage",
-    "clean": "rimraf lib-esm lib dist",
-    "pack": "npm run build && npm pack",
-    "publish": "npm run pack && npm publish"
+    "clean": "rimraf lib-esm lib dist"
   },
   "repository": {
     "type": "git",

src/browser/BrowserInfo.ts

@@ -1,4 +1,5 @@
 import { Logger } from '@aws-amplify/core';
+import { StorageUtil } from '../util/StorageUtil';
 
 /**
  *  Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
@@ -84,7 +85,7 @@ export class BrowserInfo {
 			const performanceEntries = performance.getEntriesByType('navigation');
 			if (performanceEntries && performanceEntries.length > 0) {
 				const type = (performanceEntries[0] as any)['type'];
-				return type === 'reload';
+				return type === 'reload' && StorageUtil.getPreviousPageUrl() !== '';
 			}
 		} else {
 			logger.warn('unsupported web environment for performance');

src/tracker/PageViewTracker.ts

@@ -25,17 +25,20 @@ export class PageViewTracker extends BaseTracker {
 	searchKeywords = Event.Constants.KEYWORDS;
 	lastEngageTime = 0;
 	lastScreenStartTimestamp = 0;
+	isFirstTime = true;
 
 	init() {
 		const configuredSearchKeywords = this.provider.configuration.searchKeyWords;
 		Object.assign(this.searchKeywords, configuredSearchKeywords);
 		this.onPageChange = this.onPageChange.bind(this);
-		if (this.context.configuration.pageType === PageType.SPA) {
-			this.trackPageViewForSPA();
-		} else {
+		if (this.isMultiPageApp()) {
 			if (!BrowserInfo.isFromReload()) {
 				this.onPageChange();
+			} else {
+				this.isFirstTime = false;
 			}
+		} else {
+			this.trackPageViewForSPA();
 		}
 	}
 
@@ -45,6 +48,8 @@ export class PageViewTracker extends BaseTracker {
 		window.addEventListener('popstate', this.onPageChange);
 		if (!BrowserInfo.isFromReload()) {
 			this.onPageChange();
+		} else {
+			this.isFirstTime = false;
 		}
 	}
 
@@ -55,18 +60,27 @@ export class PageViewTracker extends BaseTracker {
 			const currentPageUrl = BrowserInfo.getCurrentPageUrl();
 			const currentPageTitle = BrowserInfo.getCurrentPageTitle();
 			if (
+				this.isFirstTime ||
+				this.isMultiPageApp() ||
 				previousPageUrl !== currentPageUrl ||
 				previousPageTitle !== currentPageTitle
 			) {
 				this.provider.scrollTracker?.enterNewPage();
-				if (previousPageUrl !== '') {
+				if (
+					!this.isMultiPageApp() &&
+					!this.isFirstTime &&
+					previousPageUrl !== ''
+				) {
 					this.recordUserEngagement();
 				}
 				this.trackPageView(previousPageUrl, previousPageTitle);
 				this.trackSearchEvents();
 
 				StorageUtil.savePreviousPageUrl(currentPageUrl);
 				StorageUtil.savePreviousPageTitle(currentPageTitle);
+				if (this.isFirstTime) {
+					this.isFirstTime = false;
+				}
 			}
 		}
 	}
@@ -128,6 +142,10 @@ export class PageViewTracker extends BaseTracker {
 		return new Date().getTime() - this.lastScreenStartTimestamp;
 	}
 
+	isMultiPageApp() {
+		return this.context.configuration.pageType === PageType.multiPageApp;
+	}
+
 	trackSearchEvents() {
 		if (!this.context.configuration.isTrackSearchEvents) return;
 		const searchStr = window.location.search;

src/tracker/SessionTracker.ts

@@ -52,7 +52,6 @@ export class SessionTracker extends BaseTracker {
 
 	handleInit() {
 		this.session = Session.getCurrentSession(this.context);
-		StorageUtil.clearPageInfo();
 		if (StorageUtil.getIsFirstOpen()) {
 			this.provider.record({
 				name: Event.PresetEvent.FIRST_OPEN,
@@ -69,7 +68,11 @@ export class SessionTracker extends BaseTracker {
 		this.session = Session.getCurrentSession(this.context);
 		if (this.session.isNewSession()) {
 			pageViewTracker.setIsEntrances();
+			StorageUtil.clearPageInfo();
 			this.provider.record({ name: Event.PresetEvent.SESSION_START });
+			if(!isFirstTime){
+				pageViewTracker.onPageChange();
+			}
 		}
 		if (!this.provider.configuration.isTrackAppStartEvents) return;
 		if (isFirstTime && this.isFromCurrentHost()) return;
@@ -89,6 +92,7 @@ export class SessionTracker extends BaseTracker {
 	onPageHide() {
 		logger.debug('page hide');
 		this.storeSession();
+		StorageUtil.checkClickstreamId();
 		const isImmediate = !(this.isWindowClosing && BrowserInfo.isFirefox());
 		this.recordUserEngagement(isImmediate);
 		this.recordAppEnd(isImmediate);

src/util/StorageUtil.ts

@@ -39,28 +39,39 @@ export class StorageUtil {
 	static readonly previousPageStartTimeKey =
 		this.prefix + 'previousPageStartTimeKey';
 	static readonly userIdMappingKey = this.prefix + 'userIdMappingKey';
+	private static deviceId = '';
+	private static userUniqueId = '';
 
 	static getDeviceId(): string {
-		let deviceId = localStorage.getItem(StorageUtil.deviceIdKey) ?? '';
-		if (deviceId === '') {
+		if (StorageUtil.deviceId !== '') {
+			return StorageUtil.deviceId;
+		}
+		let deviceId = localStorage.getItem(StorageUtil.deviceIdKey);
+		if (deviceId === null) {
 			deviceId = uuidV4();
 			localStorage.setItem(StorageUtil.deviceIdKey, deviceId);
 		}
+		StorageUtil.deviceId = deviceId;
 		return deviceId;
 	}
 
 	static setCurrentUserUniqueId(userUniqueId: string) {
+		StorageUtil.userUniqueId = userUniqueId;
 		localStorage.setItem(StorageUtil.userUniqueIdKey, userUniqueId);
 	}
 
 	static getCurrentUserUniqueId(): string {
-		let userUniqueId = localStorage.getItem(StorageUtil.userUniqueIdKey) ?? '';
-		if (userUniqueId === '') {
+		if (StorageUtil.userUniqueId !== '') {
+			return StorageUtil.userUniqueId;
+		}
+		let userUniqueId = localStorage.getItem(StorageUtil.userUniqueIdKey);
+		if (userUniqueId === null) {
 			userUniqueId = uuidV4();
 			StorageUtil.setCurrentUserUniqueId(userUniqueId);
 			localStorage.setItem(StorageUtil.userUniqueIdKey, userUniqueId);
 			StorageUtil.saveUserFirstTouchTimestamp();
 		}
+		StorageUtil.userUniqueId = userUniqueId;
 		return userUniqueId;
 	}
 
@@ -293,4 +304,40 @@ export class StorageUtil {
 			timestamp.toString()
 		);
 	}
+
+	static checkDeviceId() {
+		const currentDeviceId = localStorage.getItem(StorageUtil.deviceIdKey) ?? '';
+		if (StorageUtil.deviceId !== '' && currentDeviceId === '') {
+			localStorage.setItem(StorageUtil.deviceIdKey, StorageUtil.deviceId);
+		}
+	}
+
+	static checkUserUniqueId() {
+		const currentUserUniqueId =
+			localStorage.getItem(StorageUtil.userUniqueIdKey) ?? '';
+		if (StorageUtil.userUniqueId !== '' && currentUserUniqueId === '') {
+			localStorage.setItem(
+				StorageUtil.userUniqueIdKey,
+				StorageUtil.userUniqueId
+			);
+		}
+	}
+
+	static checkIsFirstOpen() {
+		if (StorageUtil.getIsFirstOpen()) {
+			StorageUtil.saveIsFirstOpenToFalse();
+		}
+	}
+
+	static checkClickstreamId() {
+		StorageUtil.checkDeviceId();
+		StorageUtil.checkUserUniqueId();
+		StorageUtil.checkIsFirstOpen();
+	}
+
+	static clearAll() {
+		localStorage.clear();
+		(StorageUtil as any).deviceid = '';
+		(StorageUtil as any).userUniqueId = '';
+	}
 }

test/ClickstreamAnalytics.test.ts

@@ -18,7 +18,7 @@ import { StorageUtil } from '../src/util/StorageUtil';
 
 describe('ClickstreamAnalytics test', () => {
 	beforeEach(() => {
-		localStorage.clear();
+		StorageUtil.clearAll();
 		const mockSendRequestSuccess = jest.fn().mockResolvedValue(true);
 		jest
 			.spyOn(NetRequest, 'sendRequest')

test/browser/BrowserInfo.test.ts

@@ -13,13 +13,15 @@
 import { setPerformanceEntries } from './BrowserUtil';
 import { MockObserver } from './MockObserver';
 import { BrowserInfo } from '../../src/browser';
+import { StorageUtil } from '../../src/util/StorageUtil';
 
 describe('BrowserInfo test', () => {
 	afterEach(() => {
 		jest.clearAllMocks();
 		jest.resetAllMocks();
 	});
 	test('test create BrowserInfo', () => {
+		StorageUtil.clearAllEvents()
 		const referrer = 'https://example.com/collect';
 		Object.defineProperty(window.document, 'referrer', {
 			writable: true,
@@ -109,6 +111,7 @@ describe('BrowserInfo test', () => {
 	test('test web page not from reload', () => {
 		(global as any).PerformanceObserver = MockObserver;
 		setPerformanceEntries(true, true);
+		StorageUtil.savePreviousPageUrl("http://localhost:8080")
 		expect(BrowserInfo.isFromReload()).toBeTruthy();
 	});
 });

test/provider/BatchModeTimer.test.ts

@@ -13,12 +13,13 @@
 import { SendMode } from '../../src';
 import { NetRequest } from '../../src/network/NetRequest';
 import { ClickstreamProvider } from '../../src/provider';
+import { StorageUtil } from '../../src/util/StorageUtil';
 import { setUpBrowserPerformance } from '../browser/BrowserUtil';
 
 describe('ClickstreamProvider timer test', () => {
 	let provider: ClickstreamProvider;
 	beforeEach(() => {
-		localStorage.clear();
+		StorageUtil.clearAll();
 		setUpBrowserPerformance();
 		provider = new ClickstreamProvider();
 		const mockSendRequest = jest.fn().mockResolvedValue(true);

test/provider/ClickstreamProvider.test.ts

@@ -32,7 +32,7 @@ describe('ClickstreamProvider test', () => {
 	let mockRecordProfileSet: any;
 
 	beforeEach(async () => {
-		localStorage.clear();
+		StorageUtil.clearAll();
 		setUpBrowserPerformance();
 		const mockSendRequest = jest.fn().mockResolvedValue(true);
 		jest.spyOn(NetRequest, 'sendRequest').mockImplementation(mockSendRequest);

test/provider/EventRecorder.test.ts

@@ -26,7 +26,7 @@ describe('EventRecorder test', () => {
 	let eventRecorder: EventRecorder;
 	let context: ClickstreamContext;
 	beforeEach(() => {
-		localStorage.clear();
+		StorageUtil.clearAll()
 		context = new ClickstreamContext(new BrowserInfo(), {
 			appId: 'testApp',
 			endpoint: 'https://localhost:8080/collect',

test/tracker/ClickTracker.test.ts

@@ -20,6 +20,7 @@ import {
 } from '../../src/provider';
 import { Session, SessionTracker } from '../../src/tracker';
 import { ClickTracker } from '../../src/tracker/ClickTracker';
+import { StorageUtil } from "../../src/util/StorageUtil";
 
 describe('ClickTracker test', () => {
 	let provider: ClickstreamProvider;
@@ -28,7 +29,7 @@ describe('ClickTracker test', () => {
 	let recordMethodMock: any;
 
 	beforeEach(() => {
-		localStorage.clear();
+		StorageUtil.clearAll()
 		provider = new ClickstreamProvider();
 		Object.assign(provider.configuration, {
 			appId: 'testAppId',

test/tracker/PageLoadTracker.test.ts

@@ -21,6 +21,7 @@ import { Session, SessionTracker } from '../../src/tracker';
 import { PageLoadTracker } from '../../src/tracker/PageLoadTracker';
 import { setPerformanceEntries } from '../browser/BrowserUtil';
 import { MockObserver } from '../browser/MockObserver';
+import { StorageUtil } from "../../src/util/StorageUtil";
 
 describe('PageLoadTracker test', () => {
 	let provider: ClickstreamProvider;
@@ -29,7 +30,7 @@ describe('PageLoadTracker test', () => {
 	let recordMethodMock: any;
 
 	beforeEach(() => {
-		localStorage.clear();
+		StorageUtil.clearAll()
 		provider = new ClickstreamProvider();
 		Object.assign(provider.configuration, {
 			appId: 'testAppId',

test/tracker/PageViewTracker.test.ts

@@ -28,8 +28,8 @@ import {
 import { PageViewTracker, Session, SessionTracker } from '../../src/tracker';
 import { MethodEmbed } from '../../src/util/MethodEmbed';
 import { StorageUtil } from '../../src/util/StorageUtil';
-import { setPerformanceEntries } from "../browser/BrowserUtil";
-import { MockObserver } from "../browser/MockObserver";
+import { setPerformanceEntries } from '../browser/BrowserUtil';
+import { MockObserver } from '../browser/MockObserver';
 
 global.TextEncoder = TextEncoder;
 global.TextDecoder = TextDecoder;
@@ -46,7 +46,7 @@ describe('PageViewTracker test', () => {
 	let dom: any;
 
 	beforeEach(() => {
-		localStorage.clear();
+		StorageUtil.clearAll();
 		provider = new ClickstreamProvider();
 
 		Object.assign(provider.configuration, {
@@ -76,7 +76,7 @@ describe('PageViewTracker test', () => {
 			value: 'index',
 		});
 		(global as any).PerformanceObserver = MockObserver;
-		setPerformanceEntries()
+		setPerformanceEntries();
 	});
 
 	afterEach(() => {
@@ -95,6 +95,33 @@ describe('PageViewTracker test', () => {
 		expect(pageAppearMock).toBeCalled();
 	});
 
+	test('test multiPageApp do not record page view when browser reload', () => {
+		const pageAppearMock = jest.spyOn(pageViewTracker, 'onPageChange');
+		pageViewTracker.setUp();
+		expect(pageAppearMock).toBeCalled();
+		(global as any).PerformanceObserver = MockObserver;
+		setPerformanceEntries(true, true);
+		pageViewTracker.setUp();
+		expect(pageAppearMock).toBeCalledTimes(1);
+	});
+
+	test('test isFirstTime to be false when browser reload in SPA mode', () => {
+		(global as any).PerformanceObserver = MockObserver;
+		StorageUtil.savePreviousPageUrl('https://example.com/pageA');
+		setPerformanceEntries(true, true);
+		pageViewTracker.setUp();
+		expect(pageViewTracker.isFirstTime).toBeFalsy();
+	});
+
+	test('test isFirstTime to be false when browser reload in multiPageApp mode', () => {
+		(context.configuration as any).pageType = PageType.multiPageApp;
+		StorageUtil.savePreviousPageUrl('https://example.com/pageA');
+		(global as any).PerformanceObserver = MockObserver;
+		setPerformanceEntries(true, true);
+		pageViewTracker.setUp();
+		expect(pageViewTracker.isFirstTime).toBeFalsy();
+	});
+
 	test('test environment is not supported', () => {
 		const addEventListener = (global as any).window.addEventListener;
 		(global as any).window.addEventListener = undefined;
@@ -120,6 +147,22 @@ describe('PageViewTracker test', () => {
 		expect(pageAppearMock).toBeCalledTimes(1);
 	});
 
+	test('reload browser will not record page view in SPA mode', async () => {
+		(context.configuration as any).pageType = PageType.SPA;
+		const pageAppearMock = jest.spyOn(pageViewTracker, 'onPageChange');
+		pageViewTracker.setUp();
+		expect(recordEventMethodMock).toBeCalledWith(
+			expect.objectContaining({
+				event_type: Event.PresetEvent.PAGE_VIEW,
+			})
+		);
+		expect(pageAppearMock).toBeCalledTimes(1);
+		(global as any).PerformanceObserver = MockObserver;
+		setPerformanceEntries(true, true);
+		pageViewTracker.setUp();
+		expect(pageAppearMock).toBeCalledTimes(1);
+	});
+
 	test('test two different page view with userEngagement', async () => {
 		pageViewTracker.setUp();
 		jest.spyOn(pageViewTracker, 'getLastEngageTime').mockReturnValue(1100);