Feature: Empty state UI for LHN

.storybook/webpack.config.ts

@@ -54,6 +54,10 @@ const webpackConfig = ({config}: {config: Configuration}) => {
         ...custom.resolve.alias,
     };
 
+    // We can ignore the "module not installed" warning from lottie-react-native
+    // because we are not using the library for JSON format of Lottie animations.
+    config.ignoreWarnings = [{module: new RegExp('node_modules/lottie-react-native/lib/module/LottieView/index.web.js')}];
+
     // Necessary to overwrite the values in the existing DefinePlugin hardcoded to the Config staging values
     const definePluginIndex = config.plugins.findIndex((plugin) => plugin instanceof DefinePlugin);
     if (definePluginIndex !== -1 && config.plugins[definePluginIndex] instanceof DefinePlugin) {

src/components/BlockingViews/BlockingView.tsx

@@ -1,9 +1,12 @@
-import React from 'react';
-import type {ImageSourcePropType} from 'react-native';
+import React, {useMemo} from 'react';
+import type {ImageSourcePropType, StyleProp, ViewStyle, WebStyle} from 'react-native';
 import {View} from 'react-native';
 import type {SvgProps} from 'react-native-svg';
+import type {MergeExclusive} from 'type-fest';
 import AutoEmailLink from '@components/AutoEmailLink';
 import Icon from '@components/Icon';
+import Lottie from '@components/Lottie';
+import type DotLottieAnimation from '@components/LottieAnimations/types';
 import Text from '@components/Text';
 import TextLink from '@components/TextLink';
 import useLocalize from '@hooks/useLocalize';
@@ -12,13 +15,7 @@ import Navigation from '@libs/Navigation/Navigation';
 import variables from '@styles/variables';
 import type {TranslationPaths} from '@src/languages/types';
 
-type BlockingViewProps = {
-    /** Expensicon for the page */
-    icon: React.FC<SvgProps> | ImageSourcePropType;
-
-    /** Color for the icon (should be from theme) */
-    iconColor?: string;
-
+type BaseBlockingViewProps = {
     /** Title message below the icon */
     title: string;
 
@@ -31,20 +28,46 @@ type BlockingViewProps = {
     /** Whether we should show a link to navigate elsewhere */
     shouldShowLink?: boolean;
 
+    /** Function to call when pressing the navigation link */
+    onLinkPress?: () => void;
+
+    /** Whether we should embed the link with subtitle */
+    shouldEmbedLinkWithSubtitle?: boolean;
+
+    /** Render custom subtitle */
+    CustomSubtitle?: React.ReactElement;
+};
+
+type BlockingViewIconProps = {
+    /** Expensicon for the page */
+    icon: React.FC<SvgProps> | ImageSourcePropType;
+
     /** The custom icon width */
     iconWidth?: number;
 
     /** The custom icon height */
     iconHeight?: number;
 
-    /** Function to call when pressing the navigation link */
-    onLinkPress?: () => void;
+    /** Color for the icon (should be from theme) */
+    iconColor?: string;
+};
 
-    /** Whether we should embed the link with subtitle */
-    shouldEmbedLinkWithSubtitle?: boolean;
+type BlockingViewAnimationProps = {
+    /** Animation for the page */
+    animation: DotLottieAnimation;
+
+    /** Style for the animation */
+    animationStyles?: StyleProp<ViewStyle>;
+
+    /** Style for the animation on web */
+    animationWebStyle?: WebStyle;
 };
 
+// This page requires either an icon or an animation, but not both
+type BlockingViewProps = BaseBlockingViewProps & MergeExclusive<BlockingViewIconProps, BlockingViewAnimationProps>;
+
 function BlockingView({
+    animation,
     icon,
     iconColor,
     title,
@@ -55,11 +78,15 @@ function BlockingView({
     iconHeight = variables.iconSizeSuperLarge,
     onLinkPress = () => Navigation.dismissModal(),
     shouldEmbedLinkWithSubtitle = false,
+    animationStyles = [],
+    animationWebStyle = {},
+    CustomSubtitle,
 }: BlockingViewProps) {
     const styles = useThemeStyles();
     const {translate} = useLocalize();
-    function renderContent() {
-        return (
+
+    const subtitleText = useMemo(
+        () => (
             <>
                 <AutoEmailLink
                     style={[styles.textAlignCenter]}
@@ -74,25 +101,44 @@ function BlockingView({
                     </TextLink>
                 ) : null}
             </>
+        ),
+        [styles, subtitle, shouldShowLink, linkKey, onLinkPress, translate],
+    );
+
+    const subtitleContent = useMemo(() => {
+        if (CustomSubtitle) {
+            return CustomSubtitle;
+        }
+        return shouldEmbedLinkWithSubtitle ? (
+            <Text style={[styles.textAlignCenter]}>{subtitleText}</Text>
+        ) : (
+            <View style={[styles.alignItemsCenter, styles.justifyContentCenter]}>{subtitleText}</View>
         );
-    }
+    }, [styles, subtitleText, shouldEmbedLinkWithSubtitle, CustomSubtitle]);
 
     return (
         <View style={[styles.flex1, styles.alignItemsCenter, styles.justifyContentCenter, styles.ph10]}>
-            <Icon
-                src={icon}
-                fill={iconColor}
-                width={iconWidth}
-                height={iconHeight}
-            />
+            {animation && (
+                <Lottie
+                    source={animation}
+                    loop
+                    autoPlay
+                    style={animationStyles}
+                    webStyle={animationWebStyle}
+                />
+            )}
+            {icon && (
+                <Icon
+                    src={icon}
+                    fill={iconColor}
+                    width={iconWidth}
+                    height={iconHeight}
+                />
+            )}
             <View>
                 <Text style={[styles.notFoundTextHeader]}>{title}</Text>
 
-                {shouldEmbedLinkWithSubtitle ? (
-                    <Text style={[styles.textAlignCenter]}>{renderContent()}</Text>
-                ) : (
-                    <View style={[styles.alignItemsCenter, styles.justifyContentCenter]}>{renderContent()}</View>
-                )}
+                {subtitleContent}
             </View>
         </View>
     );

src/components/LHNOptionsList/LHNOptionsList.tsx

@@ -5,10 +5,18 @@ import type {ReactElement} from 'react';
 import React, {memo, useCallback, useContext, useEffect, useMemo, useRef} from 'react';
 import {StyleSheet, View} from 'react-native';
 import {withOnyx} from 'react-native-onyx';
+import BlockingView from '@components/BlockingViews/BlockingView';
+import Icon from '@components/Icon';
+import * as Expensicons from '@components/Icon/Expensicons';
+import LottieAnimations from '@components/LottieAnimations';
 import {ScrollOffsetContext} from '@components/ScrollOffsetContextProvider';
+import Text from '@components/Text';
+import useLocalize from '@hooks/useLocalize';
 import usePermissions from '@hooks/usePermissions';
 import usePrevious from '@hooks/usePrevious';
+import useTheme from '@hooks/useTheme';
 import useThemeStyles from '@hooks/useThemeStyles';
+import useWindowDimensions from '@hooks/useWindowDimensions';
 import * as ReportActionsUtils from '@libs/ReportActionsUtils';
 import variables from '@styles/variables';
 import CONST from '@src/CONST';
@@ -39,8 +47,12 @@ function LHNOptionsList({
     const flashListRef = useRef<FlashList<string>>(null);
     const route = useRoute();
 
+    const theme = useTheme();
     const styles = useThemeStyles();
     const {canUseViolations} = usePermissions();
+    const {translate} = useLocalize();
+    const {isSmallScreenWidth} = useWindowDimensions();
+    const shouldShowEmptyLHN = isSmallScreenWidth && data.length === 0;
 
     // When the first item renders we want to call the onFirstItemRendered callback.
     // At this point in time we know that the list is actually displaying items.
@@ -54,6 +66,40 @@ function LHNOptionsList({
         onFirstItemRendered();
     }, [onFirstItemRendered]);
 
+    const emptyLHNSubtitle = useMemo(
+        () => (
+            <View>
+                <Text
+                    color={theme.placeholderText}
+                    style={[styles.textAlignCenter]}
+                >
+                    {translate('common.emptyLHN.subtitleText1')}
+                    <Icon
+                        src={Expensicons.MagnifyingGlass}
+                        width={variables.emptyLHNIconWidth}
+                        height={variables.emptyLHNIconHeight}
+                        small
+                        inline
+                        fill={theme.icon}
+                        additionalStyles={styles.alignItemsCenter}
+                    />
+                    {translate('common.emptyLHN.subtitleText2')}
+                    <Icon
+                        src={Expensicons.Plus}
+                        width={variables.emptyLHNIconWidth}
+                        height={variables.emptyLHNIconHeight}
+                        small
+                        inline
+                        fill={theme.icon}
+                        additionalStyles={styles.alignItemsCenter}
+                    />
+                    {translate('common.emptyLHN.subtitleText3')}
+                </Text>
+            </View>
+        ),
+        [theme, styles.alignItemsCenter, styles.textAlignCenter, translate],
+    );
+
     /**
      * Function which renders a row in the list
      */
@@ -163,22 +209,33 @@ function LHNOptionsList({
     }, [route, flashListRef, getScrollOffset]);
 
     return (
-        <View style={style ?? styles.flex1}>
-            <FlashList
-                ref={flashListRef}
-                indicatorStyle="white"
-                keyboardShouldPersistTaps="always"
-                contentContainerStyle={StyleSheet.flatten(contentContainerStyles)}
-                data={data}
-                testID="lhn-options-list"
-                keyExtractor={keyExtractor}
-                renderItem={renderItem}
-                estimatedItemSize={optionMode === CONST.OPTION_MODE.COMPACT ? variables.optionRowHeightCompact : variables.optionRowHeight}
-                extraData={extraData}
-                showsVerticalScrollIndicator={false}
-                onLayout={onLayout}
-                onScroll={onScroll}
-            />
+        <View style={[style ?? styles.flex1, shouldShowEmptyLHN ? styles.emptyLHNWrapper : undefined]}>
+            {shouldShowEmptyLHN ? (
+                <BlockingView
+                    animation={LottieAnimations.Fireworks}
+                    animationStyles={styles.emptyLHNAnimation}
+                    animationWebStyle={styles.emptyLHNAnimation}
+                    title={translate('common.emptyLHN.title')}
+                    shouldShowLink={false}
+                    CustomSubtitle={emptyLHNSubtitle}
+                />
+            ) : (
+                <FlashList
+                    ref={flashListRef}
+                    indicatorStyle="white"
+                    keyboardShouldPersistTaps="always"
+                    contentContainerStyle={StyleSheet.flatten(contentContainerStyles)}
+                    data={data}
+                    testID="lhn-options-list"
+                    keyExtractor={keyExtractor}
+                    renderItem={renderItem}
+                    estimatedItemSize={optionMode === CONST.OPTION_MODE.COMPACT ? variables.optionRowHeightCompact : variables.optionRowHeight}
+                    extraData={extraData}
+                    showsVerticalScrollIndicator={false}
+                    onLayout={onLayout}
+                    onScroll={onScroll}
+                />
+            )}
         </View>
     );
 }

src/languages/en.ts

@@ -314,6 +314,12 @@ export default {
         member: 'Member',
         role: 'Role',
         currency: 'Currency',
+        emptyLHN: {
+            title: 'Woohoo! All caught up.',
+            subtitleText1: 'Find a chat using the',
+            subtitleText2: 'button above, or create something using the',
+            subtitleText3: 'button below.',
+        },
     },
     location: {
         useCurrent: 'Use current location',

src/languages/es.ts

@@ -304,6 +304,12 @@ export default {
         member: 'Miembro',
         role: 'Role',
         currency: 'Divisa',
+        emptyLHN: {
+            title: 'Woohoo! Todo al día.',
+            subtitleText1: 'Encuentra un chat usando el botón',
+            subtitleText2: 'o crea algo usando el botón',
+            subtitleText3: '.',
+        },
     },
     location: {
         useCurrent: 'Usar ubicación actual',

src/libs/SidebarUtils.ts

@@ -108,14 +108,6 @@ function getOrderedReportIDs(
         });
     });
 
-    if (reportsToDisplay.length === 0) {
-        // Display Concierge chat report when there is no report to be displayed
-        const conciergeChatReport = allReportsDictValues.find(ReportUtils.isConciergeChatReport);
-        if (conciergeChatReport) {
-            reportsToDisplay.push(conciergeChatReport);
-        }
-    }
-
     // The LHN is split into four distinct groups, and each group is sorted a little differently. The groups will ALWAYS be in this order:
     // 1. Pinned/GBR - Always sorted by reportDisplayName
     // 2. Drafts - Always sorted by reportDisplayName

src/styles/index.ts

@@ -3212,6 +3212,15 @@ const styles = (theme: ThemeColors) =>
             alignItems: 'center',
         },
 
+        emptyLHNWrapper: {
+            marginBottom: variables.bottomTabHeight,
+        },
+
+        emptyLHNAnimation: {
+            width: 180,
+            height: 180,
+        },
+
         locationErrorLinkText: {
             textAlignVertical: 'center',
             fontSize: variables.fontSizeLabel,

src/styles/variables.ts

@@ -125,6 +125,8 @@ export default {
     avatarChatSpacing: 12,
     chatInputSpacing: 52, // 40 + avatarChatSpacing
     borderTopWidth: 1,
+    emptyLHNIconWidth: 24, // iconSizeSmall + 4*2 horizontal margin
+    emptyLHNIconHeight: 16,
     emptyWorkspaceIconWidth: 84,
     emptyWorkspaceIconHeight: 84,
     modalTopIconWidth: 200,