Add notifications view

src/view/com/post/PostText.tsx

@@ -0,0 +1,53 @@
+import React, {useState, useEffect} from 'react'
+import {observer} from 'mobx-react-lite'
+import {ActivityIndicator, Text, View} from 'react-native'
+import {PostModel} from '../../../state/models/post'
+import {useStores} from '../../../state'
+
+export const PostText = observer(function PostText({
+  uri,
+  style,
+}: {
+  uri: string
+  style?: StyleProp
+}) {
+  const store = useStores()
+  const [model, setModel] = useState<PostModel | undefined>()
+
+  useEffect(() => {
+    if (model?.uri === uri) {
+      return // no change needed? or trigger refresh?
+    }
+    const newModel = new PostModel(store, uri)
+    setModel(newModel)
+    newModel.setup().catch(err => console.error('Failed to fetch post', err))
+  }, [uri, model?.uri, store])
+
+  // loading
+  // =
+  if (!model || model.isLoading || model.uri !== uri) {
+    return (
+      <View>
+        <ActivityIndicator />
+      </View>
+    )
+  }
+
+  // error
+  // =
+  if (model.hasError) {
+    return (
+      <View>
+        <Text style={style}>{model.error}</Text>
+      </View>
+    )
+  }
+
+  // loaded
+  // =
+  return (
+    <View>
+      <Text style={style}>{model.text}</Text>
+    </View>
+  )
+})