50 lines
1.6 KiB
TypeScript
50 lines
1.6 KiB
TypeScript
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import {derived} from "svelte/store"
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import {first, now} from "@welshman/lib"
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import {APP_DATA, getTagValues} from "@welshman/util"
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import type {ManagementMethod} from "@welshman/util"
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import {publish} from "@welshman/net"
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import {deriveRelay, manageRelay} from "@welshman/app"
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import {deriveEventsForUrl} from "@app/repository"
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// NIP-78 app data published by the relay's self key. Each featured entry is a
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// ["content", <value>] tag (freeform text, intended to be a url or nevent).
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export const FEATURED_CONTENT_D = "flotilla/featured-content"
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export const deriveFeaturedContent = (url: string) =>
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derived(
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[deriveRelay(url), deriveEventsForUrl(url, [{kinds: [APP_DATA], "#d": [FEATURED_CONTENT_D]}])],
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([$relay, $events]) => {
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const self = $relay?.self || $relay?.pubkey
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const event = (self && $events.find(e => e.pubkey === self)) || first($events)
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return getTagValues("content", event?.tags ?? [])
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},
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)
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// Publish the featured content list by asking the relay to sign it with its self
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// key (the unofficial NIP-86 "signevent" method).
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export const setFeaturedContent = async (
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url: string,
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content: string[],
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): Promise<string | undefined> => {
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const template = {
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kind: APP_DATA,
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created_at: now(),
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content: "",
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tags: [
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["d", FEATURED_CONTENT_D],
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...content
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.map(value => value.trim())
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.filter(Boolean)
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.map(value => ["content", value]),
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],
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}
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const {error} = await manageRelay(url, {
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method: "signevent" as ManagementMethod,
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params: [template],
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})
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return error
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}
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