79 lines
2.1 KiB
TypeScript
79 lines
2.1 KiB
TypeScript
import { createServer } from "node:http";
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import { webhookCallback } from "grammy";
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import { formatErrorMessage } from "../infra/errors.js";
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import type { RuntimeEnv } from "../runtime.js";
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import { defaultRuntime } from "../runtime.js";
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import { createTelegramBot } from "./bot.js";
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export async function startTelegramWebhook(opts: {
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token: string;
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path?: string;
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port?: number;
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host?: string;
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secret?: string;
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runtime?: RuntimeEnv;
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fetch?: typeof fetch;
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abortSignal?: AbortSignal;
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healthPath?: string;
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publicUrl?: string;
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}) {
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const path = opts.path ?? "/telegram-webhook";
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const healthPath = opts.healthPath ?? "/healthz";
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const port = opts.port ?? 8787;
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const host = opts.host ?? "0.0.0.0";
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const runtime = opts.runtime ?? defaultRuntime;
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const bot = createTelegramBot({
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token: opts.token,
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runtime,
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proxyFetch: opts.fetch,
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});
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const handler = webhookCallback(bot, "http", {
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secretToken: opts.secret,
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});
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const server = createServer((req, res) => {
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if (req.url === healthPath) {
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res.writeHead(200);
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res.end("ok");
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return;
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}
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if (req.url !== path || req.method !== "POST") {
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res.writeHead(404);
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res.end();
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return;
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}
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const handled = handler(req, res);
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if (handled && typeof (handled as Promise<void>).catch === "function") {
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void (handled as Promise<void>).catch((err) => {
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runtime.log?.(
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`Telegram webhook handler failed: ${formatErrorMessage(err)}`,
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);
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if (!res.headersSent) res.writeHead(500);
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res.end();
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});
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}
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});
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const publicUrl =
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opts.publicUrl ??
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`http://${host === "0.0.0.0" ? "localhost" : host}:${port}${path}`;
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await bot.api.setWebhook(publicUrl, {
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secret_token: opts.secret,
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});
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await new Promise<void>((resolve) => server.listen(port, host, resolve));
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runtime.log?.(`Telegram webhook listening on ${publicUrl}`);
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const shutdown = () => {
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server.close();
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void bot.stop();
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};
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if (opts.abortSignal) {
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opts.abortSignal.addEventListener("abort", shutdown, { once: true });
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}
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return { server, bot, stop: shutdown };
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}
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