91 lines
5.6 KiB
Markdown
91 lines
5.6 KiB
Markdown
---
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summary: "Telegram bot support status, capabilities, and configuration"
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read_when:
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- Working on Telegram features or webhooks
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---
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# Telegram (Bot API)
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Updated: 2025-12-07
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Status: ready for bot-mode use with grammY (long-polling by default; webhook supported when configured). Text + media send, mention-gated group replies with per-group overrides, and optional proxy support are implemented.
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## Goals
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- Let you talk to Clawdis via a Telegram bot in DMs and groups.
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- Share the same `main` session used by WhatsApp/WebChat; groups stay isolated as `telegram:group:<chatId>`.
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- Keep transport routing deterministic: replies always go back to the surface they arrived on.
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## How it will work (Bot API)
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1) Create a bot with @BotFather and grab the token.
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2) Configure Clawdis with `TELEGRAM_BOT_TOKEN` (or `telegram.botToken` in `~/.clawdis/clawdis.json`).
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3) Run the gateway; it auto-starts Telegram only when a `telegram` config section exists **and** a bot token is set (unless `telegram.enabled = false`).
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- If you prefer env vars, still add `telegram: { enabled: true }` to `~/.clawdis/clawdis.json` and set `TELEGRAM_BOT_TOKEN`.
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- **Long-polling** is the default.
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- **Webhook mode** is enabled by setting `telegram.webhookUrl` (optionally `telegram.webhookSecret` / `telegram.webhookPath`).
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- The webhook listener currently binds to `0.0.0.0:8787` and serves `POST /telegram-webhook` by default.
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- If you need a different public port/host, set `telegram.webhookUrl` to the externally reachable URL and use a reverse proxy to forward to `:8787`.
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4) Direct chats: user sends the first message; all subsequent turns land in the shared `main` session (default, no extra config).
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5) Groups: add the bot, disable privacy mode (or make it admin) so it can read messages; group threads stay on `telegram:group:<chatId>` and require mention/command by default (override via `telegram.groups`).
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6) Optional allowlist: use `telegram.allowFrom` for direct chats by chat id (`123456789` or `telegram:123456789`).
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## Capabilities & limits (Bot API)
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- Sees only messages sent after it’s added to a chat; no pre-history access.
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- Cannot DM users first; they must initiate. Channels are receive-only unless the bot is an admin poster.
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- File size caps follow Telegram Bot API (up to 2 GB for documents; smaller for some media types).
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- Typing indicators (`sendChatAction`) supported; native replies are **off by default** and enabled via `telegram.replyToMode` + reply tags.
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## Planned implementation details
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- Library: grammY is the only client for send + gateway (fetch fallback removed); grammY throttler is enabled by default to stay under Bot API limits.
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- Inbound normalization: maps Bot API updates to `MsgContext` with `Surface: "telegram"`, `ChatType: direct|group`, `SenderName`, `MediaPath`/`MediaType` when attachments arrive, `Timestamp`, and reply-to metadata (`ReplyToId`, `ReplyToBody`, `ReplyToSender`) when the user replies; reply context is appended to `Body` as a `[Replying to ...]` block (includes `id:` when available); groups require @bot mention by default (override per chat in config).
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- Outbound: text and media (photo/video/audio/document) with optional caption; chunked to limits. Typing cue sent best-effort.
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- Config: `TELEGRAM_BOT_TOKEN` env or `telegram.botToken` required; `telegram.groups`, `telegram.allowFrom`, `telegram.mediaMaxMb`, `telegram.replyToMode`, `telegram.proxy`, `telegram.webhookSecret`, `telegram.webhookUrl`, `telegram.webhookPath` supported.
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- Mention gating precedence (most specific wins): `telegram.groups.<chatId>.requireMention` → `telegram.groups."*".requireMention` → default `true`.
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Example config:
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```json5
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{
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telegram: {
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enabled: true,
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botToken: "123:abc",
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replyToMode: "off",
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groups: {
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"*": { requireMention: true },
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"123456789": { requireMention: false } // group chat id
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},
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allowFrom: ["123456789"], // direct chat ids allowed (or "*")
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mediaMaxMb: 5,
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proxy: "socks5://localhost:9050",
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webhookSecret: "mysecret",
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webhookPath: "/telegram-webhook",
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webhookUrl: "https://yourdomain.com/telegram-webhook"
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}
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}
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```
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- Tests: grammY-based paths in `src/telegram/*.test.ts` cover DM + group gating; add more media and webhook cases as needed.
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## Group etiquette
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- Keep privacy mode off if you expect the bot to read all messages; with privacy on, it only sees commands/mentions.
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- Make the bot an admin if you need it to send in restricted groups or channels.
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- Mention the bot (`@yourbot`) or use commands to trigger; per-group overrides live in `telegram.groups` if you want always-on behavior.
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## Reply tags
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To request a threaded reply, the model can include one tag in its output:
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- `[[reply_to_current]]` — reply to the triggering Telegram message.
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- `[[reply_to:<id>]]` — reply to a specific message id from context.
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Current message ids are appended to prompts as `[message_id: …]`; reply context includes `id:` when available.
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Behavior is controlled by `telegram.replyToMode`:
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- `off`: ignore tags.
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- `first`: only the first outbound chunk/attachment is a reply.
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- `all`: every outbound chunk/attachment is a reply.
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## Roadmap
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- ✅ Design and defaults (this doc)
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- ✅ grammY long-poll gateway + text/media send
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- ✅ Proxy + webhook helpers (setWebhook/deleteWebhook, health endpoint, optional public URL)
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- ⏳ Add more grammY coverage (webhook payloads, media edge cases)
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## Safety & ops
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- Treat the bot token as a secret (equivalent to account control); prefer `TELEGRAM_BOT_TOKEN` or a locked-down config file (`chmod 600 ~/.clawdis/clawdis.json`).
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- Respect Telegram rate limits (429s); grammY throttling is enabled by default.
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- Use a test bot for development to avoid hitting production chats.
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