2023-07-11 09:49:58 +00:00
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import { Database_Contextual_View } from "../database.ts";
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2023-08-29 22:46:42 +00:00
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import { ConnectionPool } from "../lib/nostr-ts/relay.ts";
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2023-08-28 17:58:05 +00:00
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import { PublicKey } from "../lib/nostr-ts/key.ts";
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2023-09-06 21:04:25 +00:00
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import { groupBy, NostrAccountContext, NostrKind } from "../lib/nostr-ts/nostr.ts";
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2023-07-16 15:04:23 +00:00
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import { Parsed_Event, Profile_Nostr_Event } from "../nostr.ts";
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2023-09-06 21:04:25 +00:00
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import { prepareNormalNostrEvent } from "../lib/nostr-ts/event.ts";
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2023-10-01 20:59:07 +00:00
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import { semaphore } from "https://raw.githubusercontent.com/BlowaterNostr/csp/master/csp.ts";
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2023-08-28 20:34:41 +00:00
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2023-10-01 20:59:07 +00:00
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export class ProfileSyncer {
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readonly userSet = new Set<string>();
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2023-10-01 20:59:07 +00:00
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private readonly lock = semaphore(1);
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2023-06-30 14:05:57 +00:00
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constructor(
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2023-08-28 20:34:41 +00:00
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private readonly database: Database_Contextual_View,
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private readonly pool: ConnectionPool,
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2023-09-27 19:49:23 +00:00
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) {
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}
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2023-08-28 20:34:41 +00:00
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async add(...users: string[]) {
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const size = this.userSet.size;
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for (const user of users) {
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this.userSet.add(user);
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}
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if (this.userSet.size == size) {
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return;
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}
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2023-10-01 20:59:07 +00:00
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const resp = await this.lock(async () => {
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await this.pool.closeSub(ProfileSyncer.name);
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const resp = await this.pool.newSub(ProfileSyncer.name, {
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authors: Array.from(this.userSet),
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kinds: [NostrKind.META_DATA],
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});
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return resp;
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2023-09-27 19:49:23 +00:00
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});
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if (resp instanceof Error) {
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2023-10-01 20:59:07 +00:00
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console.log(resp);
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2023-08-29 22:46:42 +00:00
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return;
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}
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for await (let { res: nostrMessage, url: relayUrl } of resp.chan) {
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if (nostrMessage.type === "EVENT" && nostrMessage.event.content) {
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this.database.addEvent(nostrMessage.event);
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}
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2023-06-30 14:05:57 +00:00
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}
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}
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2023-06-30 14:05:57 +00:00
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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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2023-07-14 10:59:25 +00:00
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export function getProfileEvent(
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db: Database_Contextual_View,
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pubkey: PublicKey,
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): Profile_Nostr_Event | undefined {
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const events: Profile_Nostr_Event[] = [];
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for (const e of db.events) {
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if (e.kind === NostrKind.META_DATA && e.pubkey === pubkey.hex) {
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events.push(e);
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}
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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 newest;
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}
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export function getProfilesByName(db: Database_Contextual_View, name: string): Profile_Nostr_Event[] {
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const events: Profile_Nostr_Event[] = [];
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for (const e of db.events) {
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if (e.kind === NostrKind.META_DATA) {
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events.push(e);
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}
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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 = events[0];
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if (p.profile.name && p.profile.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_Contextual_View,
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pubkeys: Set<string>,
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): Map<string, /*pubkey*/ Profile_Nostr_Event | undefined> {
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const contacts: Map<string, Profile_Nostr_Event | undefined> = new Map();
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for (const key of pubkeys) {
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const event = getProfileEvent(db, PublicKey.FromHex(key) as PublicKey);
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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 function ProfileFromNostrEvent(
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event: Parsed_Event<NostrKind.META_DATA>,
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) {
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const profileData = parseProfileData(event.content);
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if (profileData instanceof Error) {
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return profileData;
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2023-07-07 08:31:06 +00:00
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}
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const e: Profile_Nostr_Event = {
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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: event.content,
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parsedTags: event.parsedTags,
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profile: profileData,
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publicKey: event.publicKey,
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};
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return e;
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}
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export function parseProfileData(content: string) {
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try {
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return JSON.parse(content) as ProfileData;
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} catch (e) {
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return e as Error;
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}
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2023-06-30 14:05:57 +00:00
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}
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