KeiSeiKit-1.0/_primitives/_rust/kei-telegram-webhook
Parfii-bot 26dc8c85f7 feat(kei-buddy): AskLanguage i18n + real proposeTopicSources + voice handling
Three follow-up atomics on top of the contacts/topics/sync wave.

## 1. AskLanguage state + ru/en localisation (default en)

New state `AskLanguage` inserted between `Intro` and `AskName`. Intro now
sends a bilingual greeting + language picker. AskLanguage parses
en/english/1/ru/русский/2/etc → persona_patch{"language":"<code>"} →
transitions to AskName with that language's prompt.

All later prompts (AskName / AskTone / AskInterests / AskHobbies /
TopicSpecifics / TopicNowLater / TopicResearch / AskSchedule / Ready)
read persona.language via Lang::from_persona and dispatch through
Strings::* helpers — two language tables, no fallthrough.

Back-compat migration: existing chats without `language` key (like the
user currently in topic_now_later) get an implicit "ru" patch on next
turn so their Russian onboarding continues without regression.

New files: strings.rs (164), machine_lang.rs (145).
Modified: state.rs (+AskLanguage variant), machine.rs (Intro→AskLanguage,
AskLanguage arm, migration guard), machine_helpers.rs, machine_tests.rs.

5 new tests (intro_to_ask_language, ask_language_en, ask_language_ru,
ask_language_invalid, migration_sets_ru_when_language_missing).

## 2. Real proposeTopicSources — removed TODO(phase2) stub

machine_lang.rs::step_topic_research now calls
extractor.extract(prompt, topic_title) with a {name, url, why} schema.
Parses JSON, formats numbered source list, transitions to TopicSources.

Failure paths (LLM error, empty array): graceful fallback prompt asking
user to suggest their own — still transitions to TopicSources so flow
doesn't deadlock.

3 new tests in machine_tests_topic_research.rs:
topic_research_yes_proposes_sources,
topic_research_yes_empty_sources_still_advances,
topic_research_no_skips_topic_sources.

## 3. Voice-message handling (Telegram voice/audio → STT → text pipeline)

kei-telegram-webhook: added Voice/Audio sub-structs on Message and
WebhookEvent::Voice variant. classify() detects message.voice OR
message.audio. 2 new tests in event.rs.

kei-buddy/src/voice.rs (178 LOC):
VoiceHandler { bot_token, stt: Arc<dyn SttBackend>, http }
transcribe_file(file_id, mime_type) does:
  1. GET https://api.telegram.org/bot{token}/getFile?file_id=...
  2. GET https://api.telegram.org/file/bot{token}/{file_path}
  3. SttRequest { audio_bytes, mime_type, language: None } → backend.transcribe
  4. Returns transcript text.
2 wiremock tests (download chain + 500 error mapping).

serve.rs adds voice: Option<Arc<VoiceHandler>> to BuddyContext;
on_event Voice arm: whitelist check → transcribe → handle_text (same
pipeline as if user typed). Voice unavailable: warn + ignore.

serve_runner.rs builds VoiceHandler from KEI_BUDDY_STT_BACKEND env.

kei-stt added as optional dep gated by serve feature. Default backend
whisper-local (no extra build deps).

TTS reply path deferred (next atomic).

## Verify

  * cargo check --workspace: PASS
  * cargo test -p kei-buddy --lib: 55 passed / 0 failed (was 41 → 50 → 53 → 55)
  * cargo test -p kei-telegram-webhook --lib: 7 passed (was 5, +2 voice)
  * cargo build -p kei-buddy --release: PASS (23.7s)

NOT deployed yet — three new things to roll out next:
  * новые миграции (нет — БД без изменений)
  * новые env: KEI_BUDDY_STT_BACKEND (optional)
  * установка faster-whisper / piper-tts на сервер для STT
    (без него Voice event просто warn-логируется и игнорируется)
2026-05-12 17:49:06 +08:00
..
src feat(kei-buddy): AskLanguage i18n + real proposeTopicSources + voice handling 2026-05-12 17:49:06 +08:00
Cargo.toml feat(kei-telegram-webhook): inbound Telegram webhook handler 2026-05-12 13:33:31 +08:00
README.md feat(kei-telegram-webhook): inbound Telegram webhook handler 2026-05-12 13:33:31 +08:00

kei-telegram-webhook

Inbound Telegram Bot API webhook handler.
Sibling to kei-notify-telegram (outbound). This crate is the inbound half.

Purpose

Parse Telegram Update payloads arriving via HTTPS POST into typed WebhookEvent values. Secret-token verification included.

Architecture

The crate exposes a single axum handler function and the parsed types. It does not own an axum::Server — that is the consumer's job. Mount handle_webhook into your existing Router.

Usage

use axum::{routing::post, Router};
use kei_telegram_webhook::handle_webhook;

#[derive(Clone)]
struct AppState { token: String }

#[async_trait::async_trait]
impl kei_telegram_webhook::WebhookContext for AppState {
    fn secret_token(&self) -> &str { &self.token }
    async fn on_event(&self, event: kei_telegram_webhook::WebhookEvent) {
        println!("{event:?}");
    }
}

let state = AppState { token: "MY_SECRET".into() };
let app = Router::new()
    .route("/telegram/webhook", post(handle_webhook::<AppState>))
    .with_state(state);
// pass `app` to your axum::serve call

Status

Alpha — handler logic and unit tests pass; real Telegram POST integration verified by the consumer (KeiBuddy).