72 lines
2.3 KiB
TypeScript
72 lines
2.3 KiB
TypeScript
import { TaggedNostrEvent, EventKind, MetadataCache } from "@snort/system";
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import { MentionRegex } from "@/Const";
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import { defaultAvatar, tagFilterOfTextRepost, getDisplayName } from "@/SnortUtils";
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import { UserCache } from "@/Cache";
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import { LoginSession } from "@/Login";
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import { removeUndefined } from "@snort/shared";
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export interface NotificationRequest {
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title: string;
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body: string;
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icon: string;
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timestamp: number;
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}
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export async function makeNotification(ev: TaggedNostrEvent): Promise<NotificationRequest | null> {
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switch (ev.kind) {
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case EventKind.TextNote: {
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if (ev.tags.some(tagFilterOfTextRepost(ev))) {
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return null;
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}
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const pubkeys = new Set([ev.pubkey, ...ev.tags.filter(a => a[0] === "p").map(a => a[1])]);
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await UserCache.buffer([...pubkeys]);
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const allUsers = removeUndefined([...pubkeys].map(a => UserCache.getFromCache(a)));
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const fromUser = UserCache.getFromCache(ev.pubkey);
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const name = getDisplayName(fromUser, ev.pubkey);
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const avatarUrl = fromUser?.picture || defaultAvatar(ev.pubkey);
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return {
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title: `Reply from ${name}`,
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body: replaceTagsWithUser(ev, allUsers).substring(0, 50),
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icon: avatarUrl,
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timestamp: ev.created_at * 1000,
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};
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}
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}
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return null;
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}
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function replaceTagsWithUser(ev: TaggedNostrEvent, users: MetadataCache[]) {
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return ev.content
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.split(MentionRegex)
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.map(match => {
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const matchTag = match.match(/#\[(\d+)\]/);
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if (matchTag && matchTag.length === 2) {
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const idx = parseInt(matchTag[1]);
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const ref = ev.tags[idx];
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if (ref && ref[0] === "p" && ref.length > 1) {
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const u = users.find(a => a.pubkey === ref[1]);
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return `@${getDisplayName(u, ref[1])}`;
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}
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}
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return match;
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})
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.join();
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}
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export async function sendNotification(state: LoginSession, req: NotificationRequest) {
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const hasPermission = "Notification" in window && Notification.permission === "granted";
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const shouldShowNotification = hasPermission && req.timestamp > state.readNotifications;
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if (shouldShowNotification) {
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try {
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const worker = await navigator.serviceWorker.ready;
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worker.showNotification(req.title, {
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tag: "notification",
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vibrate: [500],
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...req,
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});
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} catch (error) {
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console.warn(error);
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}
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}
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}
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