1 files changed, 152 insertions, 0 deletions
diff --git a/bskyembed/src/util/parse-embed.ts b/bskyembed/src/util/parse-embed.ts
new file mode 100644
index 000000000..97c3dc33e
--- /dev/null
+++ b/bskyembed/src/util/parse-embed.ts
@@ -0,0 +1,152 @@
+/**
+ * This file is a copy of what exists in the social-app
+ */
+
+import {
+  AppBskyEmbedExternal,
+  AppBskyEmbedImages,
+  AppBskyEmbedRecord,
+  AppBskyEmbedRecordWithMedia,
+  AppBskyEmbedVideo,
+  AppBskyFeedDefs,
+  AppBskyGraphDefs,
+  AppBskyLabelerDefs,
+} from '@atproto/api'
+
+export type Embed =
+  | {
+      type: 'post'
+      view: AppBskyEmbedRecord.ViewRecord
+    }
+  | {
+      type: 'post_not_found'
+      view: AppBskyEmbedRecord.ViewNotFound
+    }
+  | {
+      type: 'post_blocked'
+      view: AppBskyEmbedRecord.ViewBlocked
+    }
+  | {
+      type: 'post_detached'
+      view: AppBskyEmbedRecord.ViewDetached
+    }
+  | {
+      type: 'feed'
+      view: AppBskyFeedDefs.GeneratorView
+    }
+  | {
+      type: 'list'
+      view: AppBskyGraphDefs.ListView
+    }
+  | {
+      type: 'labeler'
+      view: AppBskyLabelerDefs.LabelerView
+    }
+  | {
+      type: 'starter_pack'
+      view: AppBskyGraphDefs.StarterPackViewBasic
+    }
+  | {
+      type: 'images'
+      view: AppBskyEmbedImages.View
+    }
+  | {
+      type: 'link'
+      view: AppBskyEmbedExternal.View
+    }
+  | {
+      type: 'video'
+      view: AppBskyEmbedVideo.View
+    }
+  | {
+      type: 'post_with_media'
+      view: Embed
+      media: Embed
+    }
+  | {
+      type: 'unknown'
+      view: null
+    }
+
+export type EmbedType<T extends Embed['type']> = Extract<Embed, {type: T}>
+
+export function parseEmbedRecordView({record}: AppBskyEmbedRecord.View): Embed {
+  if (AppBskyEmbedRecord.isViewRecord(record)) {
+    return {
+      type: 'post',
+      view: record,
+    }
+  } else if (AppBskyEmbedRecord.isViewNotFound(record)) {
+    return {
+      type: 'post_not_found',
+      view: record,
+    }
+  } else if (AppBskyEmbedRecord.isViewBlocked(record)) {
+    return {
+      type: 'post_blocked',
+      view: record,
+    }
+  } else if (AppBskyEmbedRecord.isViewDetached(record)) {
+    return {
+      type: 'post_detached',
+      view: record,
+    }
+  } else if (AppBskyFeedDefs.isGeneratorView(record)) {
+    return {
+      type: 'feed',
+      view: record,
+    }
+  } else if (AppBskyGraphDefs.isListView(record)) {
+    return {
+      type: 'list',
+      view: record,
+    }
+  } else if (AppBskyLabelerDefs.isLabelerView(record)) {
+    return {
+      type: 'labeler',
+      view: record,
+    }
+  } else if (AppBskyGraphDefs.isStarterPackViewBasic(record)) {
+    return {
+      type: 'starter_pack',
+      view: record,
+    }
+  } else {
+    return {
+      type: 'unknown',
+      view: null,
+    }
+  }
+}
+
+export function parseEmbed(embed: AppBskyFeedDefs.PostView['embed']): Embed {
+  if (AppBskyEmbedImages.isView(embed)) {
+    return {
+      type: 'images',
+      view: embed,
+    }
+  } else if (AppBskyEmbedExternal.isView(embed)) {
+    return {
+      type: 'link',
+      view: embed,
+    }
+  } else if (AppBskyEmbedVideo.isView(embed)) {
+    return {
+      type: 'video',
+      view: embed,
+    }
+  } else if (AppBskyEmbedRecord.isView(embed)) {
+    return parseEmbedRecordView(embed)
+  } else if (AppBskyEmbedRecordWithMedia.isView(embed)) {
+    return {
+      type: 'post_with_media',
+      view: parseEmbedRecordView(embed.record),
+      media: parseEmbed(embed.media),
+    }
+  } else {
+    return {
+      type: 'unknown',
+      view: null,
+    }
+  }
+}