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Dedup kind 3 follower notifications by pubkey

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Kind 3 events are replaceable — the same follower generates a new
event ID on every contact list update. Dedup by pubkey on load and
merge to prevent the notifications list from filling with repeats.
This commit is contained in:
Jure
2026-03-29 23:38:14 +02:00
parent fa2eb42bf9
commit 5e8e548c42
1 changed files with 26 additions and 5 deletions
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31
src/stores/notifications.ts
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@@ -49,6 +49,24 @@ function migrateLegacyReadIds(): Set<string> {
return new Set();
}
/** Dedup kind 3 (follower) events — keep only the newest per pubkey. */
function dedupFollowers(events: NDKEvent[]): NDKEvent[] {
const seenFollowers = new Map<string, NDKEvent>();
const result: NDKEvent[] = [];
for (const e of events) {
if (e.kind === 3) {
const existing = seenFollowers.get(e.pubkey);
if (!existing || (e.created_at ?? 0) > (existing.created_at ?? 0)) {
seenFollowers.set(e.pubkey, e);
}
} else {
result.push(e);
}
}
result.push(...seenFollowers.values());
return result;
}
export const useNotificationsStore = create<NotificationsState>((set, get) => ({
notifications: [],
unreadCount: 0,
@@ -83,9 +101,12 @@ export const useNotificationsStore = create<NotificationsState>((set, get) => ({
} catch { /* skip malformed */ }
}
const unreadCount = events.filter((e) => !readIds.has(e.id!)).length;
debug.log("notif:db loaded", events.length, "notifications,", unreadCount, "unread");
set({ notifications: events, readIds, unreadCount, loading: false });
// Dedup kind 3 (follower) events by pubkey — keep only newest per person
const dedupedEvents = dedupFollowers(events);
const unreadCount = dedupedEvents.filter((e) => !readIds.has(e.id!)).length;
debug.log("notif:db loaded", dedupedEvents.length, "notifications,", unreadCount, "unread");
set({ notifications: dedupedEvents, readIds, unreadCount, loading: false });
// Clear legacy localStorage read IDs now that DB is the source of truth
localStorage.removeItem(LEGACY_READ_KEY);
@@ -130,8 +151,8 @@ export const useNotificationsStore = create<NotificationsState>((set, get) => ({
debug.log("notif:db saved", newEvents.length, "new mentions");
}
// Combine, sort, cap
const merged = [...existing, ...newEvents]
// Combine, dedup followers, sort, cap
const merged = dedupFollowers([...existing, ...newEvents])
.sort((a, b) => (b.created_at ?? 0) - (a.created_at ?? 0))
.slice(0, MAX_NOTIFICATIONS);