Revert "[🐴] Embed backwards compat (#4302)" (#4338)

This reverts commit f868821cfc.

src/components/dms/MessageItemEmbed.tsx

@@ -2,7 +2,6 @@ import React from 'react'
 import {View} from 'react-native'
 import {AppBskyEmbedRecord} from '@atproto/api'
 
-import {isNative} from '#/platform/detection'
 import {PostEmbeds} from '#/view/com/util/post-embeds'
 import {atoms as a, useTheme} from '#/alf'
 
@@ -14,8 +13,7 @@ let MessageItemEmbed = ({
   const t = useTheme()
 
   return (
-    <View
-      style={[a.my_xs, t.atoms.bg, a.rounded_md, isNative && {flexBasis: 0}]}>
+    <View style={[a.my_xs, t.atoms.bg, a.rounded_md, {flexBasis: 0}]}>
       <PostEmbeds embed={embed} />
     </View>
   )

src/screens/Messages/Conversation/MessagesList.tsx

@@ -13,9 +13,13 @@ import {
 } from 'react-native-reanimated'
 import {ReanimatedScrollEvent} from 'react-native-reanimated/lib/typescript/reanimated2/hook/commonTypes'
 import {useSafeAreaInsets} from 'react-native-safe-area-context'
-import {AppBskyEmbedRecord, RichText} from '@atproto/api'
+import {AppBskyEmbedRecord, AppBskyRichtextFacet, RichText} from '@atproto/api'
 
 import {shortenLinks, stripInvalidMentions} from '#/lib/strings/rich-text-manip'
+import {
+  convertBskyAppUrlIfNeeded,
+  isBskyPostUrl,
+} from '#/lib/strings/url-helpers'
 import {logger} from '#/logger'
 import {isNative} from '#/platform/detection'
 import {isConvoActive, useConvoActive} from '#/state/messages/convo'
@@ -289,6 +293,45 @@ export function MessagesList({
                 cid: post.cid,
               },
             }
+
+            // look for the embed uri in the facets, so we can remove it from the text
+            const postLinkFacet = rt.facets?.find(facet => {
+              return facet.features.find(feature => {
+                if (AppBskyRichtextFacet.isLink(feature)) {
+                  if (isBskyPostUrl(feature.uri)) {
+                    const url = convertBskyAppUrlIfNeeded(feature.uri)
+                    const [_0, _1, _2, rkey] = url.split('/').filter(Boolean)
+
+                    // this might have a handle instead of a DID
+                    // so just compare the rkey - not particularly dangerous
+                    return post.uri.endsWith(rkey)
+                  }
+                }
+                return false
+              })
+            })
+
+            if (postLinkFacet) {
+              // remove the post link from the text
+              rt.delete(
+                postLinkFacet.index.byteStart,
+                postLinkFacet.index.byteEnd,
+              )
+
+              // re-trim the text, now that we've removed the post link
+              //
+              // if the post link is at the start of the text, we don't want to leave a leading space
+              // so trim on both sides
+              if (postLinkFacet.index.byteStart === 0) {
+                rt = new RichText({text: rt.text.trim()}, {cleanNewlines: true})
+              } else {
+                // otherwise just trim the end
+                rt = new RichText(
+                  {text: rt.text.trimEnd()},
+                  {cleanNewlines: true},
+                )
+              }
+            }
           }
         } catch (error) {
           logger.error('Failed to get post as quote for DM', {error})