mirror of
https://github.com/BlowaterNostr/blowater.git
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0c3fe3a405
update nostr.ts
150 lines
4.2 KiB
TypeScript
150 lines
4.2 KiB
TypeScript
import * as csp from "https://raw.githubusercontent.com/BlowaterNostr/csp/master/csp.ts";
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import { Database, NotFound } from "../database.ts";
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import {
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ConnectionPool,
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newSubID,
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} from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/relay.ts";
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import {
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PublicKey,
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publicKeyHexFromNpub,
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} from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/key.ts";
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import {
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groupBy,
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NostrAccountContext,
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NostrEvent,
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NostrKind,
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prepareNormalNostrEvent,
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} from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/nostr.ts";
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import { Tag } from "../nostr.ts";
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// nip01 meta data
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// https://github.com/nostr-protocol/nips/blob/master/05.md
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// get the profile from a public key
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export class UserMetaDataNotExist {
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constructor(
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public readonly publicKey: string,
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public readonly relay: string,
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) {}
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}
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export function profilesStream(
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publicKeys: Iterable<string>,
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pool: ConnectionPool,
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) {
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const chan = csp.chan<[NostrEvent, string]>();
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(async () => {
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const hexPublicKeys = Array.from(publicKeys).map((k) => publicKeyHexFromNpub(k));
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let subId = newSubID();
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let resp = await pool.newSub(
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subId,
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{
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authors: hexPublicKeys,
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kinds: [NostrKind.META_DATA],
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},
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);
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if (resp instanceof Error) {
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throw resp;
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}
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for await (let { res: nostrMessage, url: relayUrl } of resp) {
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if (nostrMessage.type === "EVENT" && nostrMessage.event.content) {
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await chan.put([
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nostrMessage.event,
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relayUrl,
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]);
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}
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}
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await chan.close(`pool sub has been clsoed`);
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})();
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return chan;
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}
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export async function saveProfile(
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profile: ProfileData,
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sender: NostrAccountContext,
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pool: ConnectionPool,
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) {
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const event = await prepareNormalNostrEvent(
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sender,
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NostrKind.META_DATA,
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[],
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JSON.stringify(profile),
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);
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pool.sendEvent(event);
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}
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export function getProfileEvent(db: Database, pubkey: string): ProfileEvent | undefined {
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const events = Array.from(db.filterEvents((e) => {
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return e.kind === NostrKind.META_DATA && e.pubkey === pubkey;
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}));
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if (events.length == 0) {
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return undefined;
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}
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events.sort((e1, e2) => e2.created_at - e1.created_at);
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const newest = events[0];
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return ProfileFromNostrEvent(newest);
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}
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export function getProfilesByName(db: Database, name: string): ProfileEvent[] {
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const events = Array.from(db.filterEvents((e) => {
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return e.kind === NostrKind.META_DATA;
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}));
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if (events.length == 0) {
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return [];
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}
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const profilesPerUser = groupBy(events, (e) => e.pubkey);
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const result = [];
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for (const events of profilesPerUser.values()) {
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events.sort((e1, e2) => e2.created_at - e1.created_at);
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const p = ProfileFromNostrEvent(events[0]);
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if (p.content.name && p.content.name?.toLocaleLowerCase().indexOf(name.toLowerCase()) != -1) {
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result.push(p);
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}
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}
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return result;
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}
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export function getProfiles(
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db: Database,
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pubkeys: Set<string>,
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): Map<string, /*pubkey*/ ProfileEvent | undefined> {
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const contacts: Map<string, ProfileEvent | undefined> = new Map();
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for (const key of pubkeys) {
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const event = getProfileEvent(db, key);
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contacts.set(key, event);
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}
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return contacts;
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}
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// aka user profile
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export interface ProfileData {
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name?: string;
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picture?: string;
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about?: string;
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website?: string;
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banner?: string;
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[key: string]: string | undefined;
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}
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export interface ProfileEvent {
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kind: NostrKind;
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id: string;
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sig: string;
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created_at: number;
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pubkey: string;
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tags: Tag[];
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content: ProfileData;
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}
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export function ProfileFromNostrEvent(event: NostrEvent): ProfileEvent {
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return {
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kind: event.kind,
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id: event.id,
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sig: event.sig,
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created_at: event.created_at,
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pubkey: event.pubkey,
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tags: event.tags,
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content: JSON.parse(event.content) as ProfileData, // possible to throw
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};
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}
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