1 files changed, 183 insertions, 0 deletions
diff --git a/src/state/queries/usePostThread/views.ts b/src/state/queries/usePostThread/views.ts
new file mode 100644
index 000000000..71acfc77b
--- /dev/null
+++ b/src/state/queries/usePostThread/views.ts
@@ -0,0 +1,183 @@
+import {
+  type $Typed,
+  type AppBskyFeedDefs,
+  type AppBskyFeedPost,
+  type AppBskyUnspeccedDefs,
+  type AppBskyUnspeccedGetPostThreadV2,
+  AtUri,
+  moderatePost,
+  type ModerationOpts,
+} from '@atproto/api'
+
+import {makeProfileLink} from '#/lib/routes/links'
+import {
+  type ApiThreadItem,
+  type ThreadItem,
+  type TraversalMetadata,
+} from '#/state/queries/usePostThread/types'
+
+export function threadPostNoUnauthenticated({
+  uri,
+  depth,
+  value,
+}: ApiThreadItem): Extract<ThreadItem, {type: 'threadPostNoUnauthenticated'}> {
+  return {
+    type: 'threadPostNoUnauthenticated',
+    key: uri,
+    uri,
+    depth,
+    value: value as AppBskyUnspeccedDefs.ThreadItemNoUnauthenticated,
+    // @ts-ignore populated by the traversal
+    ui: {},
+  }
+}
+
+export function threadPostNotFound({
+  uri,
+  depth,
+  value,
+}: ApiThreadItem): Extract<ThreadItem, {type: 'threadPostNotFound'}> {
+  return {
+    type: 'threadPostNotFound',
+    key: uri,
+    uri,
+    depth,
+    value: value as AppBskyUnspeccedDefs.ThreadItemNotFound,
+  }
+}
+
+export function threadPostBlocked({
+  uri,
+  depth,
+  value,
+}: ApiThreadItem): Extract<ThreadItem, {type: 'threadPostBlocked'}> {
+  return {
+    type: 'threadPostBlocked',
+    key: uri,
+    uri,
+    depth,
+    value: value as AppBskyUnspeccedDefs.ThreadItemBlocked,
+  }
+}
+
+export function threadPost({
+  uri,
+  depth,
+  value,
+  moderationOpts,
+  threadgateHiddenReplies,
+}: {
+  uri: string
+  depth: number
+  value: $Typed<AppBskyUnspeccedDefs.ThreadItemPost>
+  moderationOpts: ModerationOpts
+  threadgateHiddenReplies: Set<string>
+}): Extract<ThreadItem, {type: 'threadPost'}> {
+  const moderation = moderatePost(value.post, moderationOpts)
+  const modui = moderation.ui('contentList')
+  const blurred = modui.blur || modui.filter
+  const muted = (modui.blurs[0] || modui.filters[0])?.type === 'muted'
+  const hiddenByThreadgate = threadgateHiddenReplies.has(uri)
+  const isBlurred = hiddenByThreadgate || blurred || muted
+  return {
+    type: 'threadPost',
+    key: uri,
+    uri,
+    depth,
+    value: {
+      ...value,
+      /*
+       * Do not spread anything here, load bearing for post shadow strict
+       * equality reference checks.
+       */
+      post: value.post as Omit<AppBskyFeedDefs.PostView, 'record'> & {
+        record: AppBskyFeedPost.Record
+      },
+    },
+    isBlurred,
+    moderation,
+    // @ts-ignore populated by the traversal
+    ui: {},
+  }
+}
+
+export function readMore({
+  depth,
+  repliesUnhydrated,
+  skippedIndentIndices,
+  postData,
+}: TraversalMetadata): Extract<ThreadItem, {type: 'readMore'}> {
+  const urip = new AtUri(postData.uri)
+  const href = makeProfileLink(
+    {
+      did: urip.host,
+      handle: postData.authorHandle,
+    },
+    'post',
+    urip.rkey,
+  )
+  return {
+    type: 'readMore' as const,
+    key: `readMore:${postData.uri}`,
+    href,
+    moreReplies: repliesUnhydrated,
+    depth,
+    skippedIndentIndices,
+  }
+}
+
+export function readMoreUp({
+  postData,
+}: TraversalMetadata): Extract<ThreadItem, {type: 'readMoreUp'}> {
+  const urip = new AtUri(postData.uri)
+  const href = makeProfileLink(
+    {
+      did: urip.host,
+      handle: postData.authorHandle,
+    },
+    'post',
+    urip.rkey,
+  )
+  return {
+    type: 'readMoreUp' as const,
+    key: `readMoreUp:${postData.uri}`,
+    href,
+  }
+}
+
+export function skeleton({
+  key,
+  item,
+}: Omit<Extract<ThreadItem, {type: 'skeleton'}>, 'type'>): Extract<
+  ThreadItem,
+  {type: 'skeleton'}
+> {
+  return {
+    type: 'skeleton',
+    key,
+    item,
+  }
+}
+
+export function postViewToThreadPlaceholder(
+  post: AppBskyFeedDefs.PostView,
+): $Typed<
+  Omit<AppBskyUnspeccedGetPostThreadV2.ThreadItem, 'value'> & {
+    value: $Typed<AppBskyUnspeccedDefs.ThreadItemPost>
+  }
+> {
+  return {
+    $type: 'app.bsky.unspecced.getPostThreadV2#threadItem',
+    uri: post.uri,
+    depth: 0, // reset to 0 for highlighted post
+    value: {
+      $type: 'app.bsky.unspecced.defs#threadItemPost',
+      post,
+      opThread: false,
+      moreParents: false,
+      moreReplies: 0,
+      hiddenByThreadgate: false,
+      mutedByViewer: false,
+    },
+  }
+}