Alex Gleason
c1ec7a25ed
Replaceable and addressable event headers now distinguish between first publish and subsequent updates using the published_at tag: - published_at == created_at → 'created' verb (e.g. 'created an emoji pack') - published_at != created_at → 'updated' verb (e.g. 'updated an emoji pack') - no published_at → 'shared' fallback for backward compatibility
18 lines
844 B
TypeScript
18 lines
844 B
TypeScript
import type { NostrEvent } from "@nostrify/nostrify";
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/**
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* Derive an action verb for replaceable/addressable events based on the `published_at` tag.
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* - If `published_at` exists and equals `created_at` → first publish ("created")
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* - If `published_at` exists and differs from `created_at` → subsequent update ("updated")
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* - If `published_at` is absent → fallback verb ("shared")
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*/
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export function publishedAtAction(
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event: NostrEvent | undefined,
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{ created: createdVerb, updated: updatedVerb, fallback: fallbackVerb }: { created: string; updated: string; fallback: string },
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): string {
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if (!event) return fallbackVerb;
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const publishedAt = event.tags.find(([name]) => name === "published_at")?.[1];
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if (!publishedAt) return fallbackVerb;
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return publishedAt === String(event.created_at) ? createdVerb : updatedVerb;
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}
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