Add notifications view

src/view/com/notifications/Feed.tsx

@@ -0,0 +1,50 @@
+import React from 'react'
+import {observer} from 'mobx-react-lite'
+import {Text, View, FlatList} from 'react-native'
+import {OnNavigateContent} from '../../routes/types'
+import {
+  NotificationsViewModel,
+  NotificationsViewItemModel,
+} from '../../../state/models/notifications-view'
+import {FeedItem} from './FeedItem'
+
+export const Feed = observer(function Feed({
+  view,
+  onNavigateContent,
+}: {
+  view: NotificationsViewModel
+  onNavigateContent: OnNavigateContent
+}) {
+  // TODO optimize renderItem or FeedItem, we're getting this notice from RN: -prf
+  //   VirtualizedList: You have a large list that is slow to update - make sure your
+  //   renderItem function renders components that follow React performance best practices
+  //   like PureComponent, shouldComponentUpdate, etc
+  const renderItem = ({item}: {item: NotificationsViewItemModel}) => (
+    <FeedItem item={item} onNavigateContent={onNavigateContent} />
+  )
+  const onRefresh = () => {
+    view.refresh().catch(err => console.error('Failed to refresh', err))
+  }
+  const onEndReached = () => {
+    view.loadMore().catch(err => console.error('Failed to load more', err))
+  }
+  return (
+    <View>
+      {view.isLoading && !view.isRefreshing && !view.hasContent && (
+        <Text>Loading...</Text>
+      )}
+      {view.hasError && <Text>{view.error}</Text>}
+      {view.hasContent && (
+        <FlatList
+          data={view.notifications}
+          keyExtractor={item => item._reactKey}
+          renderItem={renderItem}
+          refreshing={view.isRefreshing}
+          onRefresh={onRefresh}
+          onEndReached={onEndReached}
+        />
+      )}
+      {view.isEmpty && <Text>This feed is empty!</Text>}
+    </View>
+  )
+})