407 lines
13 KiB
TypeScript
407 lines
13 KiB
TypeScript
import { useSelector } from "react-redux";
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import { TaggedRawEvent } from "@snort/nostr";
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import { EventKind, Tag, Event as NEvent, System, RelaySettings } from "@snort/nostr";
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import { RootState } from "State/Store";
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import { HexKey, RawEvent, u256, UserMetadata, Lists } from "@snort/nostr";
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import { bech32ToHex, unwrap } from "Util";
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import { DefaultRelays, HashtagRegex } from "Const";
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declare global {
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interface Window {
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nostr: {
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getPublicKey: () => Promise<HexKey>;
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signEvent: (event: RawEvent) => Promise<RawEvent>;
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getRelays: () => Promise<Record<string, { read: boolean; write: boolean }>>;
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nip04: {
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encrypt: (pubkey: HexKey, content: string) => Promise<string>;
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decrypt: (pubkey: HexKey, content: string) => Promise<string>;
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};
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};
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}
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}
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export default function useEventPublisher() {
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const pubKey = useSelector<RootState, HexKey | undefined>(s => s.login.publicKey);
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const privKey = useSelector<RootState, HexKey | undefined>(s => s.login.privateKey);
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const follows = useSelector<RootState, HexKey[]>(s => s.login.follows);
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const relays = useSelector((s: RootState) => s.login.relays);
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const hasNip07 = "nostr" in window;
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async function signEvent(ev: NEvent): Promise<NEvent> {
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if (hasNip07 && !privKey) {
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ev.Id = await ev.CreateId();
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const tmpEv = (await barrierNip07(() => window.nostr.signEvent(ev.ToObject()))) as RawEvent;
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return new NEvent(tmpEv as TaggedRawEvent);
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} else if (privKey) {
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await ev.Sign(privKey);
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} else {
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console.warn("Count not sign event, no private keys available");
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}
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return ev;
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}
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function processContent(ev: NEvent, msg: string) {
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const replaceNpub = (match: string) => {
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const npub = match.slice(1);
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try {
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const hex = bech32ToHex(npub);
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const idx = ev.Tags.length;
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ev.Tags.push(new Tag(["p", hex], idx));
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return `#[${idx}]`;
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} catch (error) {
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return match;
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}
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};
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const replaceNoteId = (match: string) => {
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try {
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const hex = bech32ToHex(match);
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const idx = ev.Tags.length;
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ev.Tags.push(new Tag(["e", hex, "", "mention"], idx));
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return `#[${idx}]`;
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} catch (error) {
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return match;
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}
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};
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const replaceHashtag = (match: string) => {
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const tag = match.slice(1);
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const idx = ev.Tags.length;
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ev.Tags.push(new Tag(["t", tag.toLowerCase()], idx));
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return match;
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};
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const content = msg
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.replace(/@npub[a-z0-9]+/g, replaceNpub)
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.replace(/note[a-z0-9]+/g, replaceNoteId)
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.replace(HashtagRegex, replaceHashtag);
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ev.Content = content;
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}
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return {
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nip42Auth: async (challenge: string, relay: string) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.Auth;
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ev.Content = "";
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ev.Tags.push(new Tag(["relay", relay], 0));
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ev.Tags.push(new Tag(["challenge", challenge], 1));
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return await signEvent(ev);
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}
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},
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broadcast: (ev: NEvent | undefined) => {
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if (ev) {
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console.debug("Sending event: ", ev);
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System.BroadcastEvent(ev);
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}
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},
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/**
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* Write event to DefaultRelays, this is important for profiles / relay lists to prevent bugs
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* If a user removes all the DefaultRelays from their relay list and saves that relay list,
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* When they open the site again we wont see that updated relay list and so it will appear to reset back to the previous state
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*/
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broadcastForBootstrap: (ev: NEvent | undefined) => {
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if (ev) {
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for (const [k] of DefaultRelays) {
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System.WriteOnceToRelay(k, ev);
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}
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}
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},
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/**
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* Write event to all given relays.
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*/
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broadcastAll: (ev: NEvent | undefined, relays: string[]) => {
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if (ev) {
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for (const k of relays) {
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System.WriteOnceToRelay(k, ev);
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}
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}
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},
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muted: async (keys: HexKey[], priv: HexKey[]) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.PubkeyLists;
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ev.Tags.push(new Tag(["d", Lists.Muted], ev.Tags.length));
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keys.forEach(p => {
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ev.Tags.push(new Tag(["p", p], ev.Tags.length));
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});
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let content = "";
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if (priv.length > 0) {
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const ps = priv.map(p => ["p", p]);
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const plaintext = JSON.stringify(ps);
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if (hasNip07 && !privKey) {
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content = await barrierNip07(() => window.nostr.nip04.encrypt(pubKey, plaintext));
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} else if (privKey) {
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content = await ev.EncryptData(plaintext, pubKey, privKey);
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}
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}
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ev.Content = content;
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return await signEvent(ev);
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}
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},
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pinned: async (notes: HexKey[]) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.NoteLists;
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ev.Tags.push(new Tag(["d", Lists.Pinned], ev.Tags.length));
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notes.forEach(n => {
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ev.Tags.push(new Tag(["e", n], ev.Tags.length));
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});
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ev.Content = "";
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return await signEvent(ev);
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}
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},
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bookmarked: async (notes: HexKey[]) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.NoteLists;
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ev.Tags.push(new Tag(["d", Lists.Bookmarked], ev.Tags.length));
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notes.forEach(n => {
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ev.Tags.push(new Tag(["e", n], ev.Tags.length));
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});
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ev.Content = "";
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return await signEvent(ev);
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}
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},
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tags: async (tags: string[]) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.TagLists;
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ev.Tags.push(new Tag(["d", Lists.Followed], ev.Tags.length));
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tags.forEach(t => {
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ev.Tags.push(new Tag(["t", t], ev.Tags.length));
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});
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ev.Content = "";
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return await signEvent(ev);
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}
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},
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metadata: async (obj: UserMetadata) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.SetMetadata;
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ev.Content = JSON.stringify(obj);
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return await signEvent(ev);
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}
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},
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note: async (msg: string) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.TextNote;
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processContent(ev, msg);
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return await signEvent(ev);
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}
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},
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zap: async (author: HexKey, note?: HexKey, msg?: string) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.ZapRequest;
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if (note) {
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ev.Tags.push(new Tag(["e", note], ev.Tags.length));
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}
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ev.Tags.push(new Tag(["p", author], ev.Tags.length));
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const relayTag = ["relays", ...Object.keys(relays).slice(0, 10)];
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ev.Tags.push(new Tag(relayTag, ev.Tags.length));
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processContent(ev, msg || "");
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return await signEvent(ev);
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}
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},
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/**
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* Reply to a note
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*/
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reply: async (replyTo: NEvent, msg: string) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.TextNote;
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const thread = replyTo.Thread;
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if (thread) {
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if (thread.Root || thread.ReplyTo) {
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ev.Tags.push(new Tag(["e", thread.Root?.Event ?? thread.ReplyTo?.Event ?? "", "", "root"], ev.Tags.length));
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}
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ev.Tags.push(new Tag(["e", replyTo.Id, "", "reply"], ev.Tags.length));
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// dont tag self in replies
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if (replyTo.PubKey !== pubKey) {
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ev.Tags.push(new Tag(["p", replyTo.PubKey], ev.Tags.length));
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}
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for (const pk of thread.PubKeys) {
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if (pk === pubKey) {
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continue; // dont tag self in replies
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}
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ev.Tags.push(new Tag(["p", pk], ev.Tags.length));
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}
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} else {
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ev.Tags.push(new Tag(["e", replyTo.Id, "", "reply"], 0));
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// dont tag self in replies
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if (replyTo.PubKey !== pubKey) {
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ev.Tags.push(new Tag(["p", replyTo.PubKey], ev.Tags.length));
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}
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}
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processContent(ev, msg);
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return await signEvent(ev);
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}
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},
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react: async (evRef: NEvent, content = "+") => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.Reaction;
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ev.Content = content;
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ev.Tags.push(new Tag(["e", evRef.Id], 0));
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ev.Tags.push(new Tag(["p", evRef.PubKey], 1));
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return await signEvent(ev);
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}
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},
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saveRelays: async () => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.ContactList;
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ev.Content = JSON.stringify(relays);
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for (const pk of follows) {
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ev.Tags.push(new Tag(["p", pk], ev.Tags.length));
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}
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return await signEvent(ev);
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}
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},
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saveRelaysSettings: async () => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.Relays;
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ev.Content = "";
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for (const [url, settings] of Object.entries(relays)) {
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const rTag = ["r", url];
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if (settings.read && !settings.write) {
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rTag.push("read");
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}
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if (settings.write && !settings.read) {
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rTag.push("write");
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}
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ev.Tags.push(new Tag(rTag, ev.Tags.length));
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}
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return await signEvent(ev);
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}
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},
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addFollow: async (pkAdd: HexKey | HexKey[], newRelays?: Record<string, RelaySettings>) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.ContactList;
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ev.Content = JSON.stringify(newRelays ?? relays);
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const temp = new Set(follows);
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if (Array.isArray(pkAdd)) {
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pkAdd.forEach(a => temp.add(a));
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} else {
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temp.add(pkAdd);
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}
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for (const pk of temp) {
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if (pk.length !== 64) {
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continue;
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}
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ev.Tags.push(new Tag(["p", pk], ev.Tags.length));
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}
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return await signEvent(ev);
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}
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},
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removeFollow: async (pkRemove: HexKey) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.ContactList;
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ev.Content = JSON.stringify(relays);
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for (const pk of follows) {
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if (pk === pkRemove || pk.length !== 64) {
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continue;
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}
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ev.Tags.push(new Tag(["p", pk], ev.Tags.length));
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}
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return await signEvent(ev);
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}
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},
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/**
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* Delete an event (NIP-09)
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*/
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delete: async (id: u256) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.Deletion;
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ev.Content = "";
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ev.Tags.push(new Tag(["e", id], 0));
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return await signEvent(ev);
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}
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},
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/**
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* Repost a note (NIP-18)
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*/
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repost: async (note: NEvent) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.Repost;
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ev.Content = JSON.stringify(note.Original);
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ev.Tags.push(new Tag(["e", note.Id], 0));
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ev.Tags.push(new Tag(["p", note.PubKey], 1));
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return await signEvent(ev);
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}
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},
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decryptDm: async (note: NEvent): Promise<string | undefined> => {
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if (pubKey) {
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if (note.PubKey !== pubKey && !note.Tags.some(a => a.PubKey === pubKey)) {
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return "<CANT DECRYPT>";
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}
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try {
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const otherPubKey =
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note.PubKey === pubKey ? unwrap(note.Tags.filter(a => a.Key === "p")[0].PubKey) : note.PubKey;
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if (hasNip07 && !privKey) {
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return await barrierNip07(() => window.nostr.nip04.decrypt(otherPubKey, note.Content));
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} else if (privKey) {
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await note.DecryptDm(privKey, otherPubKey);
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return note.Content;
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}
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} catch (e) {
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console.error("Decryption failed", e);
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return "<DECRYPTION FAILED>";
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}
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}
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},
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sendDm: async (content: string, to: HexKey) => {
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if (pubKey) {
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const ev = NEvent.ForPubKey(pubKey);
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ev.Kind = EventKind.DirectMessage;
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ev.Content = content;
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ev.Tags.push(new Tag(["p", to], 0));
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try {
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if (hasNip07 && !privKey) {
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const cx: string = await barrierNip07(() => window.nostr.nip04.encrypt(to, content));
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ev.Content = cx;
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return await signEvent(ev);
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} else if (privKey) {
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await ev.EncryptDmForPubkey(to, privKey);
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return await signEvent(ev);
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}
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} catch (e) {
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console.error("Encryption failed", e);
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}
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}
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},
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};
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}
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let isNip07Busy = false;
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const delay = (t: number) => {
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return new Promise(resolve => {
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setTimeout(resolve, t);
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});
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};
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export const barrierNip07 = async <T>(then: () => Promise<T>): Promise<T> => {
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while (isNip07Busy) {
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await delay(10);
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}
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isNip07Busy = true;
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try {
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return await then();
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} finally {
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isNip07Busy = false;
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}
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};
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