mirror of
https://github.com/BlowaterNostr/blowater.git
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293 lines
12 KiB
TypeScript
293 lines
12 KiB
TypeScript
import { Database_Contextual_View } from "../database.ts";
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import { ProfileEvent, ProfileFromNostrEvent, profilesStream } from "../features/profile.ts";
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import { Channel } from "https://raw.githubusercontent.com/BlowaterNostr/csp/master/csp.ts";
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import { ContactGroup } from "./contact-list.tsx";
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import { PublicKey } from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/key.ts";
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import {
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NostrAccountContext,
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NostrEvent,
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NostrKind,
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} from "https://raw.githubusercontent.com/BlowaterNostr/nostr.ts/main/nostr.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 { CustomAppData, getTags } from "../nostr.ts";
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import { assertEquals } from "https://deno.land/std@0.176.0/testing/asserts.ts";
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export interface UserInfo {
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pubkey: PublicKey;
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profile: ProfileEvent | undefined; // todo: maybe change it to ProfileEvent
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newestEventSendByMe: NostrEvent | undefined;
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newestEventReceivedByMe: NostrEvent | undefined;
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pinEvent: {
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readonly created_at: number;
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readonly content: CustomAppData;
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} | undefined;
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}
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export class ProfilesSyncer {
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readonly userSet = new Set<string>();
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private chan = new Channel<string[]>();
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constructor(
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private readonly database: Database_Contextual_View,
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private readonly pool: ConnectionPool,
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) {
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(async () => {
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let stream = profilesStream(this.userSet, pool);
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let socialPosts = socialPostsStream(this.userSet, pool);
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database.syncEvents((e) => e.kind == NostrKind.META_DATA, stream);
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database.syncEvents((e) => e.kind == NostrKind.TEXT_NOTE, socialPosts);
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for await (const users of this.chan) {
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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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console.log("adding", users);
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await stream.close();
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await socialPosts.close();
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stream = profilesStream(this.userSet, pool);
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socialPosts = socialPostsStream(this.userSet, pool);
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database.syncEvents((e) => e.kind == NostrKind.META_DATA, stream);
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database.syncEvents((e) => e.kind == NostrKind.TEXT_NOTE, socialPosts);
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}
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}
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})();
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}
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async add(...users: string[]) {
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const err = await this.chan.put(users);
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if (err instanceof Error) {
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throw err; // impossible
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}
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}
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}
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function socialPostsStream(pubkeys: Iterable<string>, pool: ConnectionPool) {
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const chan = new Channel<[NostrEvent, string]>();
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let subId = newSubID();
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(async () => {
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let resp = await pool.newSub(
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subId,
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{
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authors: Array.from(pubkeys),
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kinds: [NostrKind.TEXT_NOTE],
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limit: 200,
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},
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);
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if (resp instanceof Error) {
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await chan.close(resp.message);
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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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const event = nostrMessage.event;
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await chan.put([
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event,
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relayUrl,
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]);
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}
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}
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console.log("closed");
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})();
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return chan;
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}
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export function getAllUsersInformation(
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database: Database_Contextual_View,
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ctx: NostrAccountContext,
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): Map<string, UserInfo> {
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const t = Date.now();
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const res = new Map<string, UserInfo>();
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{
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for (const event of database.filterEvents((_) => true)) {
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switch (event.kind) {
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case NostrKind.META_DATA:
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{
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const userInfo = res.get(event.pubkey);
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const profileEvent = ProfileFromNostrEvent(event);
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if (userInfo) {
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if (userInfo.profile) {
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if (profileEvent.created_at > userInfo.profile?.created_at) {
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userInfo.profile = profileEvent;
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}
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} else {
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userInfo.profile = profileEvent;
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}
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} else {
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const newUserInfo: UserInfo = {
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pinEvent: undefined,
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pubkey: PublicKey.FromHex(event.pubkey) as PublicKey,
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newestEventReceivedByMe: undefined,
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newestEventSendByMe: undefined,
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profile: undefined,
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};
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newUserInfo.profile = profileEvent;
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res.set(event.pubkey, newUserInfo);
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}
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}
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break;
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case NostrKind.TEXT_NOTE:
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break;
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case NostrKind.RECOMMED_SERVER:
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break;
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case NostrKind.CONTACTS:
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break;
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case NostrKind.DIRECT_MESSAGE:
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{
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let whoAm_I_TalkingTo = "";
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if (event.pubkey == ctx.publicKey.hex) {
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// I am the sender
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whoAm_I_TalkingTo = getTags(event).p[0];
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} else if (getTags(event).p[0] == ctx.publicKey.hex) {
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// I am the receiver
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whoAm_I_TalkingTo = event.pubkey;
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} else {
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// I am neither. Possible because other user has used this device before
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break;
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}
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const userInfo = res.get(whoAm_I_TalkingTo);
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if (userInfo) {
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if (whoAm_I_TalkingTo == ctx.publicKey.hex) {
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// talking to myself
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if (userInfo.newestEventSendByMe) {
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if (event.created_at > userInfo.newestEventSendByMe?.created_at) {
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userInfo.newestEventSendByMe = event;
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userInfo.newestEventReceivedByMe = event;
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}
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} else {
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userInfo.newestEventSendByMe = event;
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userInfo.newestEventReceivedByMe = event;
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}
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} else {
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if (ctx.publicKey.hex == event.pubkey) {
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// I am the sender
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if (userInfo.newestEventSendByMe) {
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if (event.created_at > userInfo.newestEventSendByMe.created_at) {
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userInfo.newestEventSendByMe = event;
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}
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} else {
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userInfo.newestEventSendByMe = event;
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}
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} else {
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// I am the receiver
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if (userInfo.newestEventReceivedByMe) {
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if (event.created_at > userInfo.newestEventReceivedByMe.created_at) {
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userInfo.newestEventReceivedByMe = event;
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}
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} else {
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userInfo.newestEventReceivedByMe = event;
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}
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}
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}
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} else {
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const newUserInfo: UserInfo = {
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pubkey: PublicKey.FromHex(whoAm_I_TalkingTo) as PublicKey,
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pinEvent: undefined,
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newestEventReceivedByMe: undefined,
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newestEventSendByMe: undefined,
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profile: undefined,
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};
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if (whoAm_I_TalkingTo == ctx.publicKey.hex) {
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// talking to myself
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newUserInfo.newestEventSendByMe = event;
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newUserInfo.newestEventReceivedByMe = event;
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} else {
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if (ctx.publicKey.hex == event.pubkey) {
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// I am the sender
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newUserInfo.newestEventSendByMe = event;
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} else {
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// I am the receiver
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newUserInfo.newestEventReceivedByMe = event;
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}
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}
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res.set(whoAm_I_TalkingTo, newUserInfo);
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}
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}
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break;
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case NostrKind.DELETE:
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break;
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case NostrKind.CustomAppData: {
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if (event.kind == NostrKind.CustomAppData) {
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event;
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}
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const obj: CustomAppData = JSON.parse(event.decryptedContent);
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if (obj.type == "PinContact" || obj.type == "UnpinContact") {
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const userInfo = res.get(obj.pubkey);
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if (userInfo) {
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if (userInfo.pinEvent) {
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if (event.created_at > userInfo.pinEvent.created_at) {
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userInfo.pinEvent = {
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content: obj,
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created_at: event.created_at,
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};
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}
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} else {
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userInfo.pinEvent = {
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content: obj,
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created_at: event.created_at,
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};
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}
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} else {
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res.set(obj.pubkey, {
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pubkey: PublicKey.FromHex(obj.pubkey) as PublicKey, // todo: could throw
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pinEvent: {
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content: obj,
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created_at: event.created_at,
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},
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newestEventReceivedByMe: undefined,
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newestEventSendByMe: undefined,
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profile: undefined,
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});
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}
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}
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}
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}
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}
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}
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// todo: should write a unit test for it instead of runtime assertion
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for (const [pubkey, userInfo] of res) {
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assertEquals(pubkey, userInfo.pubkey.hex);
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if (userInfo.profile) {
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assertEquals(pubkey, userInfo.profile.pubkey);
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}
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}
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console.log("getAllUsersInformation", Date.now() - t);
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return res;
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}
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export const sortUserInfo = (a: UserInfo, b: UserInfo) => {
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return sortScore(b) - sortScore(a);
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};
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function sortScore(contact: UserInfo) {
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let score = 0;
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if (contact.newestEventSendByMe !== undefined) {
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score += contact.newestEventSendByMe.created_at;
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}
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if (contact.newestEventReceivedByMe !== undefined) {
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score += contact.newestEventReceivedByMe.created_at;
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}
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return score;
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}
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export function getGroupOf(pubkey: PublicKey, allUserInfo: Map<string, UserInfo>): ContactGroup {
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const contact = allUserInfo.get(pubkey.hex);
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if (contact == undefined) {
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return "Strangers";
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}
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console.log(contact);
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if (
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contact.newestEventReceivedByMe == undefined || contact.newestEventSendByMe == undefined
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) {
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return "Strangers";
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} else {
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return "Contacts";
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}
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}
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