1 files changed, 30 insertions, 1 deletions
diff --git a/src/components/dms/util.ts b/src/components/dms/util.ts
index 7315f5fc9..2bcc9c3bd 100644
--- a/src/components/dms/util.ts
+++ b/src/components/dms/util.ts
@@ -1,4 +1,7 @@
-import * as bsky from '#/types/bsky'
+import {type ChatBskyConvoDefs} from '@atproto/api'
+
+import {EMOJI_REACTION_LIMIT} from '#/lib/constants'
+import type * as bsky from '#/types/bsky'
 
 export function canBeMessaged(profile: bsky.profile.AnyProfileView) {
   switch (profile.associated?.chat?.allowIncoming) {
@@ -25,3 +28,29 @@ export function localDateString(date: Date) {
   // not padding with 0s because it's not necessary, it's just used for comparison
   return `${yyyy}-${mm}-${dd}`
 }
+
+export function hasAlreadyReacted(
+  message: ChatBskyConvoDefs.MessageView,
+  myDid: string | undefined,
+  emoji: string,
+): boolean {
+  if (!message.reactions) {
+    return false
+  }
+  return !!message.reactions.find(
+    reaction => reaction.value === emoji && reaction.sender.did === myDid,
+  )
+}
+
+export function hasReachedReactionLimit(
+  message: ChatBskyConvoDefs.MessageView,
+  myDid: string | undefined,
+): boolean {
+  if (!message.reactions) {
+    return false
+  }
+  const myReactions = message.reactions.filter(
+    reaction => reaction.sender.did === myDid,
+  )
+  return myReactions.length >= EMOJI_REACTION_LIMIT
+}