82 lines
2.1 KiB
JavaScript
82 lines
2.1 KiB
JavaScript
import 'websocket-polyfill'
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import { extract } from '@extractus/feed-extractor'
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import NDK, { NDKEvent, NDKPrivateKeySigner } from '@nostr-dev-kit/ndk'
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import bech32 from 'bech32-buffer'
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const toHexString = nsec => {
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let buffer = bech32.decode(nsec).data
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return buffer.reduce((s, byte) => {
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let hex = byte.toString(16);
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if (hex.length === 1) hex = '0' + hex;
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return s + hex;
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}, '');
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}
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export const handler = async (event) => {
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const region = process.env.AWS_REGION || "us-east-1"
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const feed = event.feedUrl
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const privkey = toHexString(event.nostrNsec)
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const since = event.since
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if (feed === "") {
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console.error("feedUrl was not set.")
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return {
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statusCode: 400,
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body: "feedUrl must be provided in payload."
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}
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}
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let response = {
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totalItems: 0,
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successes: 0,
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errors: []
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}
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const ndk = new NDK({
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signer: new NDKPrivateKeySigner(privkey),
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explicitRelayUrls: [
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"wss://nostr.mom",
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"wss://nostr.snort.social",
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"wss://nostr.lol"
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]
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})
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const user = await ndk.signer.user()
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await ndk.connect(6000).catch(err => {
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console.error(err)
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response.errors.push ("failed to connect to relay", err)
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})
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let rss = await extract(feed)
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.catch(err => {
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console.error(err.error);
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return response
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})
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let filtered = rss.entries.filter(item => Date.parse(item.published) >= Date.parse(since))
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response.totalItems = filtered.length
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for (let item of filtered) {
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let ndkEvent = new NDKEvent(ndk, {
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kind: 1,
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pubkey: user.hexpubkey,
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content: item.title,
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created_at: Math.floor(Date.now() / 1000),
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})
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try {
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const published = await ndkEvent.publish()
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if (published) {
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response.successes++
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}
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} catch(e) {
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console.error(e)
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response.errors.push(e)
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}
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}
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return response
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}
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