147 lines
4.3 KiB
TypeScript
147 lines
4.3 KiB
TypeScript
import webpush from "web-push";
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import { CouchDBChangesStream } from "@hereconnect/couchdb-changes-stream";
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import { qrDb, messagesDbUrl, webPushSubscriptionsDb } from "./dbs";
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import { setupVapidDetails } from "./setupVapidDetails";
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import type { MessageDocument } from "@hereconnect/types";
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import { ServiceSeqTracker } from "./serviceSeqTracker";
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import { startHealthServer } from "./health-server";
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const abortController = new AbortController();
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startHealthServer(abortController);
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function limitStringLengthWithEllipsis(str: string, maxLength: number): string {
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return str.length > maxLength ? str.substring(0, maxLength) + "…" : str;
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}
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const start = async () => {
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await setupVapidDetails();
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const serviceSeqTracker = await ServiceSeqTracker.Init(
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"_local/service:message-delivery-method-web-push",
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);
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const changesStream = new CouchDBChangesStream<MessageDocument>(
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messagesDbUrl,
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{
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abortController,
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since: serviceSeqTracker.lastSeq,
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feed: "continuous",
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include_docs: true,
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heartbeat: 1000,
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filter: "_selector",
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selector: {
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type: "message",
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},
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},
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);
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// Gracefully handle SIGINT
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process.on("SIGINT", async () => {
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changesStream?.stop();
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process.stdout.write("\n");
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process.exit(2);
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});
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console.info("Service started from sequence", serviceSeqTracker.lastSeq);
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for await (const change of changesStream) {
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const { seq, doc: msgDoc } = change;
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if (!msgDoc) {
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console.error("Change missing document:", change);
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continue;
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}
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serviceSeqTracker.checkNextSeq(seq);
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try {
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if (msgDoc.from === "guest") {
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// send message to owner
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const qrDoc = await qrDb.get(`qr_code:${msgDoc.qr_code_uri}`);
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if (qrDoc.messageDeliveryMethod !== "webPush") {
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console.log(`Skip !webPush`);
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continue;
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}
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const { rows } = await webPushSubscriptionsDb.allDocs({
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startkey: `web_push_subscription:${qrDoc.user_uuid}:`,
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endkey: `web_push_subscription:${qrDoc.user_uuid}:\uffff`,
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include_docs: true,
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});
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if (rows.length === 0) {
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console.log("NO SUBSCRIPTIONS");
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} else {
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console.log(`sending to ${rows.length} devices`);
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}
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for (const row of rows) {
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try {
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const subscription = row.doc!.subscription;
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const topic = `chat-${msgDoc.qr_code_uri}-${msgDoc.chat}`;
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const timestamp = new Date(msgDoc.created_at).getTime();
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const tag = `${topic}-${(timestamp - new Date(qrDoc.created_at).getTime()).toString(36)}`;
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const title = limitStringLengthWithEllipsis(
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`${qrDoc.name}: новое сообщение`,
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53,
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);
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const body = limitStringLengthWithEllipsis(msgDoc.body, 470);
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const options: NotificationOptions & { timestamp: number } = {
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icon: "/images/qr-code-logo-200x200.jpg",
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body,
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tag,
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requireInteraction: true,
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timestamp,
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data: {
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url: `/manage/${msgDoc.qr_code_uri}/chat/${msgDoc.chat}`,
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payload: { tag },
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},
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} as const;
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await webpush.sendNotification(
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subscription,
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JSON.stringify({
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type: "notification",
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notification: {
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title,
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options,
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},
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}),
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{
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urgency: "high",
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topic,
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},
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);
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} catch (error) {
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console.error(
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`Error sending notification to ${row.id} - ${JSON.stringify(error)}`,
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);
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}
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}
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} else if (msgDoc.from === "owner") {
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console.log("FROM OWNER");
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} else {
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continue;
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}
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console.log(
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`Processed change: ${JSON.stringify({ _id: change.id, ref: msgDoc._rev, seq: change.seq })}`,
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);
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} catch (error) {
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console.error(
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`Failed processing: ${JSON.stringify(error)} change: ${JSON.stringify({ id: msgDoc._id, rev: msgDoc._rev, seq: seq })}`,
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);
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} finally {
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await serviceSeqTracker.saveSeq(seq);
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}
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}
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};
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start().catch((error) => {
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console.error("error", error);
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process.exit(1);
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});
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