# hapi-hub

Telegram bot + HTTP API + realtime updates for hapi hub.

## What it does

- Telegram bot for notifications and the Mini App entrypoint.
- HTTP API for sessions, messages, permissions, machines, and files.
- Server-Sent Events stream for live updates in the web app.
- Socket.IO channel for CLI connections.
- Serves the web app from `web/dist` or embedded assets in the single binary.
- Persists state in SQLite.

## Configuration

See `src/configuration.ts` for all options.

### Required

- `CLI_API_TOKEN` - Base shared secret used by CLI and web login. Clients append `:<namespace>` for isolation. Auto-generated on first run if not set.

### Optional (Telegram)

- `TELEGRAM_BOT_TOKEN` - Token from @BotFather.
- `HAPI_PUBLIC_URL` - Public HTTPS URL for Telegram Mini App access. Also used to derive default CORS origins for the web app.

### Optional (Voice)

- `ELEVENLABS_API_KEY` - ElevenLabs API key for voice assistant.
- `ELEVENLABS_AGENT_ID` - Custom ElevenLabs agent ID (auto-created if not set).
- `OPENAI_API_KEY` - OpenAI dictation (`gpt-transcribe` / `gpt-live-transcribe`).
- `DEEPGRAM_API_KEY` - Deepgram dictation (`nova-3`, standard and realtime).
- `GROQ_API_KEY` - Groq dictation (`whisper-large-v3`).
- `TRANSCRIPTION_BASE_URL` and `TRANSCRIPTION_MODEL` - OpenAI-compatible/local transcription endpoint and model.
- `TRANSCRIPTION_API_KEY` - Optional bearer token for the OpenAI-compatible endpoint.

### Optional

- `HAPI_LISTEN_HOST` - HTTP bind address (default: 127.0.0.1).
- `HAPI_LISTEN_PORT` - HTTP port (default: 3006).
- `CORS_ORIGINS` - Comma-separated origins, or `*`.
- `HAPI_HOME` - Data directory (default: ~/.hapi).
- `DB_PATH` - SQLite database path (default: HAPI_HOME/hapi.db).
- `TELEGRAM_NOTIFICATION` - Enable/disable Telegram notifications (default: true).
- `HAPI_RELAY_API` - Relay API domain (default: relay.hapi.run).
- `HAPI_RELAY_AUTH` - Explicit relay auth key. By default the hub obtains and persists an individually revocable key from the relay. A persisted key rejected with HTTP 403 is discarded and reissued once; an explicitly configured environment key must be updated manually.
- `HAPI_RELAY_FORCE_TCP` - Force TCP relay mode (true/1).
- `VAPID_SUBJECT` - Contact email/URL for Web Push.

## Running

Binary (single executable):

```bash
export TELEGRAM_BOT_TOKEN="..."
export CLI_API_TOKEN="shared-secret"
export HAPI_PUBLIC_URL="https://your-domain.example"

hapi hub
```

`hapi server` remains supported as an alias.

If you only need web + CLI, you can omit TELEGRAM_BOT_TOKEN.
To enable Telegram, set TELEGRAM_BOT_TOKEN and HAPI_PUBLIC_URL, start the hub, open `/app`
in the bot chat, and bind the Mini App with `CLI_API_TOKEN:<namespace>` when prompted.

From source:

```bash
bun install
bun run dev:hub
```

## HTTP API

See `src/web/routes/` for all endpoints.

### Authentication (`src/web/routes/auth.ts`)

- `POST /api/auth` - Get JWT token (Telegram initData or `CLI_API_TOKEN[:namespace]`).
- `POST /api/bind` - Bind a Telegram account using initData + `CLI_API_TOKEN:<namespace>`.

### Sessions (`src/web/routes/sessions.ts`)

- `GET /api/sessions` - List all sessions.
- `GET /api/sessions/:id` - Get session details.
- `POST /api/sessions/:id/abort` - Abort session.
- `POST /api/sessions/:id/switch` - Switch session to remote mode.
- `POST /api/sessions/:id/resume` - Resume inactive session.
- `POST /api/sessions/:id/upload` - Upload file (base64, max 50MB).
- `POST /api/sessions/:id/upload/delete` - Delete uploaded file.
- `POST /api/sessions/:id/archive` - Archive active session.
- `PATCH /api/sessions/:id` - Rename session.
- `DELETE /api/sessions/:id` - Delete inactive session.
- `GET /api/sessions/:id/slash-commands` - List slash commands.
- `GET /api/sessions/:id/skills` - List skills.
- `POST /api/sessions/:id/permission-mode` - Set permission mode.
- `POST /api/sessions/:id/model` - Set model preference.
- `POST /api/sessions/:id/effort` - Set Claude effort preference.

### Messages (`src/web/routes/messages.ts`)

- `GET /api/sessions/:id/messages` - Get messages (paginated).
- `POST /api/sessions/:id/messages` - Send message.

### Permissions (`src/web/routes/permissions.ts`)

- `POST /api/sessions/:id/permissions/:requestId/approve` - Approve permission.
- `POST /api/sessions/:id/permissions/:requestId/deny` - Deny permission.

### Machines (`src/web/routes/machines.ts`)

- `GET /api/machines` - List online machines.
- `POST /api/machines/:id/spawn` - Spawn new session on machine.
- `POST /api/machines/:id/paths/exists` - Check if path exists.

### Usage (`src/web/routes/usage.ts`)

- `GET /api/usage/summary` - Get cache-aware token usage for the owner namespace (`range=7d|30d|all`).

### Git/Files (`src/web/routes/git.ts`)

- `GET /api/sessions/:id/git-status` - Git status.
- `GET /api/sessions/:id/git-diff-numstat` - Diff summary.
- `GET /api/sessions/:id/git-diff-file` - File-specific diff.
- `GET /api/sessions/:id/file` - Read file content.
- `GET /api/sessions/:id/files` - File search with ripgrep.

### Events (`src/web/routes/events.ts`)

- `GET /api/events` - SSE stream for live updates.
- `POST /api/visibility` - Report client visibility state.

### Voice (`src/web/routes/voice.ts`)

- `POST /api/voice/token` - Get ElevenLabs conversation token.
- `GET /api/voice/transcription/providers` - List configured providers and supported modes.
- `POST /api/voice/transcription` - Transcribe a bounded recording.
- `POST /api/voice/transcription/realtime-token` - Mint a short-lived OpenAI, ElevenLabs, or Deepgram credential.

### Push Notifications (`src/web/routes/push.ts`)

- `GET /api/push/vapid-public-key` - Get VAPID public key.
- `POST /api/push/subscribe` - Subscribe to push notifications.
- `DELETE /api/push/subscribe` - Unsubscribe.

### CLI (`src/web/routes/cli.ts`)

- `POST /cli/sessions` - Create/load session.
- `GET /cli/sessions/:id` - Get session by ID.
- `POST /cli/machines` - Create/load machine.
- `GET /cli/machines/:id` - Get machine by ID.

## Socket.IO

See `src/socket/handlers/cli.ts` for event handlers.

Namespace: `/cli`

### Client events (CLI to hub)

- `message` - Send message to session.
- `update-metadata` - Update session metadata.
- `update-state` - Update agent state.
- `session-alive` - Keep session active.
- `session-ready` - Cursor ACP `session/load` (or `newSession`) succeeded; hub defers merge/dedup until this arrives on reopen.
- `session-end` - Mark session ended.
- `machine-alive` - Keep machine online.
- `rpc-register` - Register RPC handler.
- `rpc-unregister` - Unregister RPC handler.

### Terminal events (web to hub)

- `terminal:create` - Open terminal for session.
- `terminal:write` - Send input.
- `terminal:resize` - Resize dimensions.
- `terminal:close` - Close terminal.

### Hub events (hub to clients)

- `update` - Broadcast session/message updates.
- `rpc-request` - Incoming RPC call.

See `src/socket/rpcRegistry.ts` for RPC routing.

## Telegram Bot

See `src/telegram/bot.ts` for bot implementation.

### Commands

- `/start` - Welcome message with Mini App link.
- `/app` - Open Mini App.

### Features

- Permission request notifications with approve/deny buttons.
- Session ready notifications.
- Deep links to Mini App sessions.

See `src/telegram/callbacks.ts` for button handlers.

## Core Logic

See `src/sync/syncEngine.ts` for the main session/message manager:

- In-memory session cache with versioning.
- Message pagination and retrieval.
- Permission approval/denial.
- RPC method routing via Socket.IO.
- Event publishing to SSE and Telegram.
- Git operations and file search.
- Activity tracking and timeouts.

## Storage

See `src/store/index.ts` for SQLite persistence:

- Sessions with metadata and agent state.
- Messages with pagination support.
- Machines with runner state.
- Todo extraction from messages.
- Users table for Telegram bindings (includes namespace).

Message content is stored via `src/store/contentCodec.ts`: oversized strings
inside agent messages (giant tool output) are head+tail truncated at ingest,
and payloads ≥256 chars are zstd-compressed (TEXT = plaintext JSON, BLOB =
zstd). User prompts are never truncated — queued rows are delivered to the CLI
verbatim.

Maintenance scripts (run with the hub stopped before swapping files):

- `scripts/compact-db.ts` — retroactively truncate + compress + VACUUM an
  existing DB into a new file (the source is only opened read-only).
- `scripts/cleanup-sessions.ts` — bulk-delete sessions by message count, path
  glob, or first-message pattern.

## Source structure

- `src/web/` - HTTP service and routes.
- `src/socket/` - Socket.IO setup and handlers.
- `src/socket/handlers/cli/` - Modular CLI handlers.
- `src/telegram/` - Telegram bot.
- `src/sync/` - Core session/message logic.
- `src/store/` - SQLite persistence.
- `src/sse/` - Server-Sent Events.
- `src/config/` - Configuration loading and generation.
- `src/notifications/` - Push and Telegram notifications.
- `src/visibility/` - Client visibility tracking.

## Security model

Access is controlled by:
- Telegram initData verification plus bound Telegram users (bound via `CLI_API_TOKEN:<namespace>`).
- `CLI_API_TOKEN` base secret for CLI and browser access (namespace is appended by clients).

Transport security depends on HTTPS in front of the hub.

## Build for deployment

From the repo root:

```bash
bun run build:hub
bun run build:web
```

The hub build output is `hub/dist/index.js`, and the web assets are in `web/dist`.

## Networking notes

- Telegram Mini Apps require HTTPS and a public URL. If the hub has no public IP, use Cloudflare Tunnel or Tailscale and set `HAPI_PUBLIC_URL` to the HTTPS endpoint.
- If the web app is hosted on a different origin, set `CORS_ORIGINS` (or `HAPI_PUBLIC_URL`) to include that static host origin.

## Standalone web hosting

The web UI can be hosted separately from the hub (for example on GitHub Pages or Cloudflare Pages):

1. Build and deploy `web/dist` from the repo root.
2. Set `CORS_ORIGINS` (or `HAPI_PUBLIC_URL`) to the static host origin.
3. Open the static site, click the Hub button on the login screen, and enter the hapi hub origin.

Leaving the hub override empty preserves the default same-origin behavior when the hub serves the web assets directly.