From 41d7b9d4e5d0e10cdac708d9c9cd4838e47240ec Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Fri, 9 Oct 2026 10:36:39 -0700
Subject: Translation: posts in another language are shown in yours —
 "Translated from Spanish · Show original" under the words, automatic by
 default for posts the language guess calls foreign (Settings → Nostr →
 Translation switches it off and leaves a Translate link instead), and ⋯ →
 Translate for any post. The browser's on-device Translator does it when the
 language pair is already installed (desktop Chrome); otherwise the
 registrar's new POST /translate (names/translate.js): a cached, 4-at-a-time
 front for a LibreTranslate container on cs (names/compose-libretranslate.yml,
 v1.9.6, 32 languages; none for sw/mr/ta/te, so those readers get no offer).
 Links, nostr: mentions, :emoji:, #tags and long codes are never sent to the
 model — only the prose between them, batched in one call
 (src/translate-split.js, shared). Translations are remembered
 (coinos-translations, 300). tools/translate-test.js
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Vps2H27rhbG9ZqseGfMrc3
---
 names/server.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'names/server.js')

diff --git a/names/server.js b/names/server.js
index 6cd82a1..463ab8e 100644
--- a/names/server.js
+++ b/names/server.js
@@ -28,6 +28,7 @@ import { mnemonicToSeedSync } from '@scure/bip39';
 import { lnBackend } from '../bridge/ln.js';
 import { ArkManager } from '../src/ark/manager.js';
 import { fetchPreview } from './preview.js';
+import { translate, languages } from './translate.js';
 import { decodeAddress } from '../src/ark/proto.js';
 import { decodeNoffer } from '../src/noffer.js';
 import { decodeBolt11 } from '../src/ark/lightning.js';
@@ -1036,6 +1037,22 @@ Bun.serve({
       });
     }
 
+    // A post in another language, in the reader's (LibreTranslate behind a
+    // cache — see translate.js). POST { text, target, source? } →
+    // { text, source }; GET /translate/languages lists what it can do.
+    if (url.pathname === '/translate/languages' && req.method === 'GET') {
+      try { return new Response(JSON.stringify(await languages()), { headers: { 'content-type': 'application/json', 'access-control-allow-origin': '*', 'cache-control': 'public, max-age=3600' } }); }
+      catch { return json({ error: 'translation unavailable' }, 503); }
+    }
+    if (url.pathname === '/translate' && req.method === 'POST') {
+      if (!rateOk(ip, 60)) return json({ error: 'rate limited' }, 429);
+      let body = null;
+      try { body = await req.json(); } catch {}
+      if (!body || typeof body.text !== 'string' || typeof body.target !== 'string') return json({ error: 'bad request' }, 400);
+      try { return json(await translate(body.text, body.target, body.source)); }
+      catch (e) { return json({ error: e.message || 'translation failed' }, e.status || 503); }
+    }
+
     if (url.pathname === '/health') {
       return json({
         ok: true, domain: DOMAIN, names: Object.keys(state.names).length,
-- 
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