Post UI updates (Profile Preview on mobile) (#990)

* Update postmeta to put the timestamp on the right side on mobile

* Drop the two-line PostMeta mode

* Add ProfilePreview modal

* Tune PostMeta to give the best behavior possible for a given platform

* Remove old showFollowBtn attributes

* Fix style issue

* Switch the follow button in the profile header to use the inverted color for consistency with the rest of the app

* Fix lint

* Fix darkmode

* Tune the profile preview footer

* Better analytics choice

src/view/com/modals/ProfilePreview.tsx

@@ -0,0 +1,89 @@
+import React, {useState, useEffect, useCallback} from 'react'
+import {StyleSheet, View} from 'react-native'
+import {observer} from 'mobx-react-lite'
+import {useNavigation, StackActions} from '@react-navigation/native'
+import {Text} from '../util/text/Text'
+import {useStores} from 'state/index'
+import {ProfileModel} from 'state/models/content/profile'
+import {usePalette} from 'lib/hooks/usePalette'
+import {useAnalytics} from 'lib/analytics/analytics'
+import {ProfileHeader} from '../profile/ProfileHeader'
+import {Button} from '../util/forms/Button'
+import {NavigationProp} from 'lib/routes/types'
+
+export const snapPoints = [560]
+
+export const Component = observer(({did}: {did: string}) => {
+  const store = useStores()
+  const pal = usePalette('default')
+  const palInverted = usePalette('inverted')
+  const navigation = useNavigation<NavigationProp>()
+  const [model] = useState(new ProfileModel(store, {actor: did}))
+  const {screen} = useAnalytics()
+
+  useEffect(() => {
+    screen('Profile:Preview')
+    model.setup()
+  }, [model, screen])
+
+  const onPressViewProfile = useCallback(() => {
+    navigation.dispatch(StackActions.push('Profile', {name: model.handle}))
+    store.shell.closeModal()
+  }, [navigation, store, model])
+
+  return (
+    <View style={pal.view}>
+      <View style={styles.headerWrapper}>
+        <ProfileHeader view={model} hideBackButton onRefreshAll={() => {}} />
+      </View>
+      <View style={[styles.buttonsContainer, pal.view]}>
+        <View style={styles.buttons}>
+          <Button
+            type="inverted"
+            style={[styles.button, styles.buttonWide]}
+            onPress={onPressViewProfile}
+            accessibilityLabel="View profile"
+            accessibilityHint="">
+            <Text type="button-lg" style={palInverted.text}>
+              View Profile
+            </Text>
+          </Button>
+          <Button
+            type="default"
+            style={styles.button}
+            onPress={() => store.shell.closeModal()}
+            accessibilityLabel="Close this preview"
+            accessibilityHint="">
+            <Text type="button-lg" style={pal.text}>
+              Close
+            </Text>
+          </Button>
+        </View>
+      </View>
+    </View>
+  )
+})
+
+const styles = StyleSheet.create({
+  headerWrapper: {
+    height: 440,
+  },
+  buttonsContainer: {
+    height: 120,
+  },
+  buttons: {
+    flexDirection: 'row',
+    gap: 8,
+    paddingHorizontal: 14,
+    paddingTop: 16,
+  },
+  button: {
+    flex: 2,
+    flexDirection: 'row',
+    justifyContent: 'center',
+    paddingVertical: 12,
+  },
+  buttonWide: {
+    flex: 3,
+  },
+})