Handle no pinned feeds

src/lib/constants.ts

@@ -1,4 +1,6 @@
 import {Insets, Platform} from 'react-native'
+import {AppBskyActorDefs} from '@atproto/api'
+import {TID} from '@atproto/common-web'
 
 export const LOCAL_DEV_SERVICE =
   Platform.OS === 'android' ? 'http://10.0.2.2:2583' : 'http://localhost:2583'
@@ -92,3 +94,18 @@ export const BSKY_FEED_OWNER_DIDS = [
 
 export const DISCOVER_FEED_URI =
   'at://did:plc:z72i7hdynmk6r22z27h6tvur/app.bsky.feed.generator/whats-hot'
+
+export const RECOMMENDED_SAVED_FEEDS: AppBskyActorDefs.SavedFeed[] = [
+  {
+    id: TID.nextStr(),
+    type: 'feed',
+    value: DISCOVER_FEED_URI,
+    pinned: true,
+  },
+  {
+    id: TID.nextStr(),
+    type: 'timeline',
+    value: 'home',
+    pinned: true,
+  },
+]

src/screens/Home/NoFeedsPinned.tsx

@@ -0,0 +1,89 @@
+import React from 'react'
+import {useWindowDimensions, View} from 'react-native'
+import {msg, Trans} from '@lingui/macro'
+import {useLingui} from '@lingui/react'
+
+import {RECOMMENDED_SAVED_FEEDS} from '#/lib/constants'
+import {useSetSaveFeedsMutation} from '#/state/queries/preferences'
+import {useWebMediaQueries} from 'lib/hooks/useWebMediaQueries'
+import {CenteredView} from '#/view/com/util/Views'
+import {atoms as a} from '#/alf'
+import {Button, ButtonIcon, ButtonText} from '#/components/Button'
+import {ListSparkle_Stroke2_Corner0_Rounded as ListSparkle} from '#/components/icons/ListSparkle'
+import {PlusLarge_Stroke2_Corner0_Rounded as Plus} from '#/components/icons/Plus'
+import {Link} from '#/components/Link'
+import {Text} from '#/components/Typography'
+
+export function useHeaderOffset() {
+  const {isDesktop, isTablet} = useWebMediaQueries()
+  const {fontScale} = useWindowDimensions()
+  if (isDesktop || isTablet) {
+    return 0
+  }
+  const navBarHeight = 42
+  const tabBarPad = 10 + 10 + 3 // padding + border
+  const normalLineHeight = 1.2
+  const tabBarText = 16 * normalLineHeight * fontScale
+  return navBarHeight + tabBarPad + tabBarText
+}
+
+export function NoFeedsPinned() {
+  const {_} = useLingui()
+  const headerOffset = useHeaderOffset()
+  const {isPending, mutateAsync: setSavedFeeds} = useSetSaveFeedsMutation()
+
+  const addRecommendedFeeds = React.useCallback(async () => {
+    await setSavedFeeds(RECOMMENDED_SAVED_FEEDS)
+  }, [setSavedFeeds])
+
+  return (
+    <CenteredView sideBorders style={[a.h_full_vh]}>
+      <View
+        style={[
+          a.align_center,
+          a.h_full_vh,
+          a.py_3xl,
+          a.px_xl,
+          {
+            paddingTop: headerOffset + a.py_3xl.paddingTop,
+          },
+        ]}>
+        <View style={[a.align_center, a.gap_sm, a.pb_xl]}>
+          <Text style={[a.text_xl, a.font_bold]}>
+            <Trans>Whoops!</Trans>
+          </Text>
+          <Text
+            style={[a.text_md, a.text_center, a.leading_snug, {maxWidth: 340}]}>
+            <Trans>
+              Looks like you unpinned all your feeds. But don't worry, you can
+              add some below 😄
+            </Trans>
+          </Text>
+        </View>
+
+        <View style={[a.flex_row, a.gap_md, a.justify_center, a.flex_wrap]}>
+          <Button
+            disabled={isPending}
+            label={_(msg`Apply default recommended feeds`)}
+            size="medium"
+            variant="solid"
+            color="primary"
+            onPress={addRecommendedFeeds}>
+            <ButtonIcon icon={Plus} position="left" />
+            <ButtonText>{_(msg`Add recommended feeds`)}</ButtonText>
+          </Button>
+
+          <Link
+            label={_(msg`Browse other feeds`)}
+            to="/feeds"
+            size="medium"
+            variant="solid"
+            color="secondary">
+            <ButtonIcon icon={ListSparkle} position="left" />
+            <ButtonText>{_(msg`Browse other feeds`)}</ButtonText>
+          </Link>
+        </View>
+      </View>
+    </CenteredView>
+  )
+}

src/view/screens/Home.tsx

@@ -21,6 +21,7 @@ import {Pager, PagerRef, RenderTabBarFnProps} from 'view/com/pager/Pager'
 import {CustomFeedEmptyState} from 'view/com/posts/CustomFeedEmptyState'
 import {FollowingEmptyState} from 'view/com/posts/FollowingEmptyState'
 import {FollowingEndOfFeed} from 'view/com/posts/FollowingEndOfFeed'
+import {NoFeedsPinned} from '#/screens/Home/NoFeedsPinned'
 import {HomeHeader} from '../com/home/HomeHeader'
 
 type Props = NativeStackScreenProps<HomeTabNavigatorParams, 'Home'>
@@ -110,12 +111,14 @@ function HomeScreenReady({
 
   useFocusEffect(
     useNonReactiveCallback(() => {
-      logEvent('home:feedDisplayed', {
-        index: selectedIndex,
-        feedType: selectedFeed.split('|')[0],
-        feedUrl: selectedFeed,
-        reason: 'focus',
-      })
+      if (selectedFeed) {
+        logEvent('home:feedDisplayed', {
+          index: selectedIndex,
+          feedType: selectedFeed.split('|')[0],
+          feedUrl: selectedFeed,
+          reason: 'focus',
+        })
+      }
     }),
   )
 
@@ -147,12 +150,15 @@ function HomeScreenReady({
   const onPageSelecting = React.useCallback(
     (index: number, reason: LogEvents['home:feedDisplayed']['reason']) => {
       const feed = allFeeds[index]
-      logEvent('home:feedDisplayed', {
-        index,
-        feedType: feed.split('|')[0],
-        feedUrl: feed,
-        reason,
-      })
+
+      if (feed) {
+        logEvent('home:feedDisplayed', {
+          index,
+          feedType: feed.split('|')[0],
+          feedUrl: feed,
+          reason,
+        })
+      }
     },
     [allFeeds],
   )
@@ -212,35 +218,39 @@ function HomeScreenReady({
       onPageSelected={onPageSelected}
       onPageScrollStateChanged={onPageScrollStateChanged}
       renderTabBar={renderTabBar}>
-      {allFeeds.map(feed => {
-        if (feed === 'home' || feed === 'following') {
+      {allFeeds.length ? (
+        allFeeds.map(feed => {
+          if (feed === 'home' || feed === 'following') {
+            return (
+              <FeedPage
+                key={feed}
+                testID="followingFeedPage"
+                isPageFocused={selectedFeed === feed}
+                feed={feed}
+                feedParams={homeFeedParams}
+                renderEmptyState={renderFollowingEmptyState}
+                renderEndOfFeed={FollowingEndOfFeed}
+              />
+            )
+          }
+          const savedFeedConfig = preferences.savedFeeds.find(f => {
+            return feed.includes(f.value)
+          })
+
           return (
             <FeedPage
               key={feed}
-              testID="followingFeedPage"
+              testID="customFeedPage"
               isPageFocused={selectedFeed === feed}
               feed={feed}
-              feedParams={homeFeedParams}
-              renderEmptyState={renderFollowingEmptyState}
-              renderEndOfFeed={FollowingEndOfFeed}
+              renderEmptyState={renderCustomFeedEmptyState}
+              savedFeedConfig={savedFeedConfig}
             />
           )
-        }
-        const savedFeedConfig = preferences.savedFeeds.find(f => {
-          return feed.includes(f.value)
         })
-
-        return (
-          <FeedPage
-            key={feed}
-            testID="customFeedPage"
-            isPageFocused={selectedFeed === feed}
-            feed={feed}
-            renderEmptyState={renderCustomFeedEmptyState}
-            savedFeedConfig={savedFeedConfig}
-          />
-        )
-      })}
+      ) : (
+        <NoFeedsPinned />
+      )}
     </Pager>
   ) : (
     <Pager