Proxy Telegram bot user avatars

src/server.ts

@@ -4,7 +4,10 @@ import mercurius from 'mercurius';
 import { config } from './config.js';
 import { prisma } from './prisma.js';
 import { resolvers, schema } from './graphql/schema.js';
-import { handleTelegramBotWebhook } from './auth/telegram-bot-login.js';
+import {
+  fetchTelegramPhoto,
+  handleTelegramBotWebhook,
+} from './auth/telegram-bot-login.js';
 
 const app = Fastify({ logger: true });
 
@@ -33,6 +36,14 @@ app.post('/telegram/webhook', async (request, reply) => {
   return reply.send({ ok: true });
 });
 
+app.get('/telegram/photo/:fileId', async (request, reply) => {
+  const params = request.params as { fileId: string };
+  const photo = await fetchTelegramPhoto(params.fileId);
+  reply.header('content-type', photo.contentType);
+  reply.header('cache-control', 'public, max-age=86400');
+  return reply.send(photo.bytes);
+});
+
 app.addHook('onClose', async () => {
   await prisma.$disconnect();
 });