Improve room join/leave

2024-09-11 12:19:45 -07:00
parent e9cbfec76d
commit e0eb37cd04
10 changed files with 108 additions and 41 deletions
@@ -69,10 +69,6 @@ export const deriveEvent = (idOrAddress: string, hints: string[] = []) => {
  )
 }

-// Topics
-
-export const topicsByUrl = withGetter(writable(new Map<string, string[]>()))
-
 // Membership

 export type Membership = {
@@ -185,6 +181,20 @@ export const {
  },
 })

+// Topics
+
+export const topicsByUrl = derived(chats, $chats => {
+  const $topicsByUrl = new Map<string, string[]>()
+
+  for (const chat of $chats) {
+    if (chat.topic) {
+      pushToMapKey($topicsByUrl, chat.url, chat.topic)
+    }
+  }
+
+  return $topicsByUrl
+})
+
 // User stuff

 export const userProfile = derived([pubkey, profilesByPubkey], ([$pubkey, $profilesByPubkey]) => {