Add feeds tab

src/view/screens/Feeds.tsx

@@ -0,0 +1,125 @@
+import React from 'react'
+import {StyleSheet, View} from 'react-native'
+import {useFocusEffect} from '@react-navigation/native'
+import isEqual from 'lodash.isequal'
+import {withAuthRequired} from 'view/com/auth/withAuthRequired'
+import {FlatList} from 'view/com/util/Views'
+import {ViewHeader} from 'view/com/util/ViewHeader'
+import {LoadLatestBtn} from 'view/com/util/load-latest/LoadLatestBtn'
+import {FAB} from 'view/com/util/fab/FAB'
+import {Link} from 'view/com/util/Link'
+import {NativeStackScreenProps, FeedsTabNavigatorParams} from 'lib/routes/types'
+import {observer} from 'mobx-react-lite'
+import {PostsMultiFeedModel} from 'state/models/feeds/multi-feed'
+import {MultiFeed} from 'view/com/posts/MultiFeed'
+import {isDesktopWeb} from 'platform/detection'
+import {usePalette} from 'lib/hooks/usePalette'
+import {useStores} from 'state/index'
+import {useOnMainScroll} from 'lib/hooks/useOnMainScroll'
+import {ComposeIcon2, CogIcon} from 'lib/icons'
+import {s} from 'lib/styles'
+
+const HEADER_OFFSET = isDesktopWeb ? 0 : 40
+
+type Props = NativeStackScreenProps<FeedsTabNavigatorParams, 'Feeds'>
+export const FeedsScreen = withAuthRequired(
+  observer<Props>(({}: Props) => {
+    const pal = usePalette('default')
+    const store = useStores()
+    const flatListRef = React.useRef<FlatList>(null)
+    const multifeed = React.useMemo<PostsMultiFeedModel>(
+      () => new PostsMultiFeedModel(store),
+      [store],
+    )
+    const [onMainScroll, isScrolledDown, resetMainScroll] =
+      useOnMainScroll(store)
+
+    const onSoftReset = React.useCallback(() => {
+      flatListRef.current?.scrollToOffset({offset: 0})
+      resetMainScroll()
+    }, [flatListRef, resetMainScroll])
+
+    useFocusEffect(
+      React.useCallback(() => {
+        const softResetSub = store.onScreenSoftReset(onSoftReset)
+        const multifeedCleanup = multifeed.registerListeners()
+        const cleanup = () => {
+          softResetSub.remove()
+          multifeedCleanup()
+        }
+
+        store.shell.setMinimalShellMode(false)
+        return cleanup
+      }, [store, multifeed, onSoftReset]),
+    )
+
+    React.useEffect(() => {
+      if (
+        isEqual(
+          multifeed.feedInfos.map(f => f.uri),
+          store.me.savedFeeds.all.map(f => f.uri),
+        )
+      ) {
+        // no changes
+        return
+      }
+      multifeed.refresh()
+    }, [multifeed, store.me.savedFeeds.all])
+
+    const onPressCompose = React.useCallback(() => {
+      store.shell.openComposer({})
+    }, [store])
+
+    const renderHeaderBtn = React.useCallback(() => {
+      return (
+        <Link
+          href="/settings/saved-feeds"
+          hitSlop={10}
+          accessibilityRole="button"
+          accessibilityLabel="Edit Saved Feeds"
+          accessibilityHint="Opens screen to edit Saved Feeds">
+          <CogIcon size={22} strokeWidth={2} style={pal.textLight} />
+        </Link>
+      )
+    }, [pal])
+
+    return (
+      <View style={[pal.view, styles.container]}>
+        <MultiFeed
+          scrollElRef={flatListRef}
+          multifeed={multifeed}
+          onScroll={onMainScroll}
+          scrollEventThrottle={100}
+          headerOffset={HEADER_OFFSET}
+        />
+        <ViewHeader
+          title="My Feeds"
+          canGoBack={false}
+          hideOnScroll
+          renderButton={renderHeaderBtn}
+        />
+        {isScrolledDown ? (
+          <LoadLatestBtn
+            onPress={onSoftReset}
+            label="Scroll to top"
+            showIndicator={false}
+          />
+        ) : null}
+        <FAB
+          testID="composeFAB"
+          onPress={onPressCompose}
+          icon={<ComposeIcon2 strokeWidth={1.5} size={29} style={s.white} />}
+          accessibilityRole="button"
+          accessibilityLabel="Compose post"
+          accessibilityHint=""
+        />
+      </View>
+    )
+  }),
+)
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+  },
+})