<p align="center">
  <img src="public/logo.png" alt="PinchChat" width="120" />
</p>

<h1 align="center">PinchChat</h1>

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**A sleek, dark-themed webchat UI for [OpenClaw](https://github.com/openclaw/openclaw) — monitor sessions, stream responses, and inspect tool calls in real-time.**

> 🎬 **[See the live demo →](https://marlburrow.github.io/pinchchat/)** — interactive preview of the UI with tool call visualization, streaming, and more.

<p align="center">
  <img src="public/screenshot.png" alt="PinchChat Screenshot" width="800" />
</p>

## ✨ Features

- 🔧 **Tool call visualization** — see what your agent is doing in real-time: colored badges, visible parameters, expandable results. The killer feature missing from every other chat UI.
- 💬 **GPT-like interface** — sessions in a sidebar, switch between conversations. Familiar if you've used ChatGPT or Claude.
- 📋 **Multi-session navigation** — browse all active sessions including cron jobs, sub-agents, and background tasks
- ⚡ **Live streaming** — watch the agent think and write token by token
- 📊 **Token usage tracking** — progress bars per session so you know how much context is left
- 🖼️ **Inline images** — generated or read images render directly in chat with lightbox preview
- 🎯 **Chat-focused** — no settings menus or config panels cluttering the screen. Just the conversation.
- 🎨 **Themes** — Dark, Light, and OLED Black modes with 6 accent colors. Persisted per-browser.
- 🧠 **Thinking/reasoning display** — see the agent's reasoning process in collapsible blocks with elapsed time
- 🔍 **Message search** — Ctrl+F to search and navigate through conversation history
- 📐 **Split view** — open 2 sessions side by side with a resizable divider
- ✍️ **Syntax-highlighted input** — real-time markdown coloring as you type (code blocks, bold, links)
- 🔀 **Drag & drop reorder** — organize sessions in the sidebar by dragging, order persists across reloads
- 📋 **Raw JSON viewer** — inspect full gateway message payloads for debugging
- 🗂️ **Channel icons** — Discord, Telegram, cron, and other session types shown with distinct icons
- 📤 **Export conversations** — download any session as a formatted Markdown file
- 🌐 **i18n** — English and French built-in, easy to extend
- 🔔 **Notification sounds** — subtle audio chime for new messages (toggleable)
- ⌨️ **Keyboard shortcuts** — navigate sessions, toggle sidebar, search, and more without touching the mouse
- 📱 **PWA support** — installable as a progressive web app with offline caching and auto-updates
- ♿ **Accessible** — skip-to-chat link, focus-visible outlines, semantic HTML, `prefers-reduced-motion` support, ARIA live regions

## 🚀 Quick Start

### Docker (recommended)

```bash
docker run -p 3000:80 ghcr.io/marlburrow/pinchchat:latest
```

Open `http://localhost:3000` and enter your OpenClaw gateway URL + token on the login screen.

Or use Docker Compose:

```bash
curl -O https://raw.githubusercontent.com/MarlBurroW/pinchchat/main/docker-compose.yml
docker compose up -d
```

### From source

**Prerequisites:** Node.js 20+, an OpenClaw gateway running and accessible.

```bash
git clone https://github.com/MarlBurroW/pinchchat.git
cd pinchchat
npm install
cp .env.example .env
npm run dev
```

Optionally edit `.env` to pre-fill the gateway URL:

```env
VITE_GATEWAY_WS_URL=ws://localhost:18789
VITE_LOCALE=en          # or "fr" for French UI
```

### Production build

```bash
npm run build
npx vite preview
```

Or serve the `dist/` folder with nginx, Caddy, or any static file server.

## ⚙️ Configuration

All configuration is optional — credentials are entered at runtime via the login screen.

| Variable | Description | Default |
|---|---|---|
| `VITE_GATEWAY_WS_URL` | Pre-fill the gateway URL on the login screen | `ws://<hostname>:18789` |
| `VITE_LOCALE` | UI language (`en` or `fr`) | `en` |

> **Note:** The gateway token is entered at runtime and stored in `localStorage` — it is never baked into the build.

## 🎨 Customization

PinchChat stores all preferences in `localStorage` — no server-side config needed.

### Themes

Click the palette icon in the header to switch between:

| Theme | Description |
|-------|-------------|
| **Dark** (default) | Zinc-based dark theme, easy on the eyes |
| **Light** | Clean light mode with white backgrounds |
| **OLED** | Pure black backgrounds for OLED screens |
| **System** | Follows your OS dark/light preference |

### Accent Colors

Six accent colors are available: **Cyan** (default), **Violet**, **Emerald**, **Amber**, **Rose**, and **Blue**. The accent tints buttons, links, progress bars, and user message bubbles.

### Other Preferences

These settings persist across sessions:

- **Sidebar width** — drag the right edge to resize
- **Session order** — drag & drop to reorder; pinned sessions stay on top
- **Syntax highlighting** — toggle the `</>` button in the input area
- **Split view** — open two sessions side by side (icon in header)
- **Language** — switch between English and French via the globe icon
- **Message drafts** — input text is preserved per-session when switching

## 🏗 Architecture

```mermaid
graph TD
    subgraph Browser["🌐 PinchChat (Browser)"]
        Login["LoginScreen<br/><i>credentials</i>"]
        App["App.tsx<br/><i>router</i>"]
        UI["Chat + Sidebar<br/><i>main UI</i>"]
        Hook["useGateway<br/><i>WebSocket state machine</i><br/>auth · sessions · messages"]

        Login --> App --> UI
        App & UI --> Hook
    end

    Hook <-->|"WebSocket (JSON frames)"| Gateway["🔌 OpenClaw Gateway<br/><code>ws://host:18789</code>"]
    Gateway <-->|API| LLM["🤖 LLM Provider<br/><i>Anthropic, OpenAI, etc.</i>"]
```

### Key Components

| File | Role |
|---|---|
| `src/hooks/useGateway.ts` | WebSocket connection, auth, message streaming, session management |
| `src/components/LoginScreen.tsx` | Runtime credential entry (stored in `localStorage`) |
| `src/components/Chat.tsx` | Message list with auto-scroll and streaming display |
| `src/components/ChatInput.tsx` | Input with file upload, paste, drag & drop, image compression |
| `src/components/ChatMessage.tsx` | Markdown rendering, tool calls, thinking blocks |
| `src/components/Sidebar.tsx` | Session list with token usage bars and activity indicators |
| `src/components/Header.tsx` | Connection status, token progress bar, logout |
| `src/lib/i18n.ts` | Lightweight i18n (English + French) |
| `src/lib/gateway.ts` | WebSocket protocol helpers and message types |

### Data Flow

1. **Login** — User enters gateway URL + token → stored in `localStorage`
2. **Connect** — `useGateway` opens a WebSocket and authenticates with the token
3. **Sessions** — Gateway pushes session list; user selects one in the sidebar
4. **Messages** — Messages stream in via WebSocket frames; the hook assembles partial chunks into complete messages
5. **Send** — User input (+ optional file attachments) is sent as a JSON frame over the WebSocket

> 📖 For a deeper dive into the codebase structure, see [ARCHITECTURE.md](ARCHITECTURE.md).

## 🌐 Adding a Language

PinchChat uses a zero-dependency i18n system. Adding a new language takes ~5 minutes:

1. **Open `src/lib/i18n.ts`** and duplicate the `en` object with your locale code:

```ts
const de: typeof en = {
  'login.title': 'PinchChat',
  'login.subtitle': 'Verbinde dich mit deinem OpenClaw-Gateway',
  // ... translate all keys
};
```

2. **Register it** in the `messages` record (same file):

```ts
const messages: Record<string, typeof en> = { en, fr, de };
```

3. **Add a label** for the language selector:

```ts
export const localeLabels: Record<string, string> = {
  en: 'EN',
  fr: 'FR',
  de: 'DE',
};
```

4. **Done.** The language selector, `VITE_LOCALE`, and browser auto-detection all pick it up automatically.

> **Tip:** TypeScript enforces that your new locale object has the same keys as `en` — missing translations won't compile.

## ⌨️ Keyboard Shortcuts

Press **?** anywhere to open the shortcuts panel.

| Shortcut | Action |
|---|---|
| `Enter` | Send message |
| `Shift + Enter` | New line |
| `Esc` | Stop generation / close sidebar |
| `Ctrl/⌘ + F` | Search messages in current session |
| `Ctrl/⌘ + K` | Focus session search |
| `Alt + ↑` / `Alt + ↓` | Switch between sessions |
| `?` | Show shortcuts help |

## ❓ Troubleshooting

### Connection fails / "WebSocket error"

- Make sure your OpenClaw gateway is running and reachable from the browser
- Check the gateway URL format: `ws://host:18789` (or `wss://` if behind TLS)
- If PinchChat is served over HTTPS, the gateway **must** also use `wss://` — browsers block mixed content
- Verify the gateway token is correct (copy-paste from your OpenClaw config)

### Blank screen after login

- Open your browser's developer console (F12) and check for errors
- Ensure the gateway is running a compatible version of OpenClaw (v0.24+)
- Try clearing `localStorage` (Application tab → Storage → Clear site data) and logging in again

### Messages don't appear / sessions empty

- The WebSocket may have disconnected silently — check the connection indicator in the header
- If the gateway was restarted, PinchChat reconnects automatically, but you may need to refresh once
- Verify the token has access to the sessions you expect

### Docker: "port already in use"

```bash
# Check what's using port 3000
lsof -i :3000
# Use a different port
docker run -p 8080:80 ghcr.io/marlburrow/pinchchat:latest
```

### Images not displaying

- Inline images require the gateway to send media as base64 data URLs or accessible HTTP URLs
- If images show as broken, the gateway may be behind a reverse proxy that strips large payloads — check proxy buffer settings

### Debugging

PinchChat includes built-in debugging tools:

**WebSocket debug logging** — open the browser console (F12) and run:

```js
localStorage.setItem('pinchchat:debug', '1');
```

Reload the page. All WebSocket frames (sent and received) will be logged to the console with a `[GW]` prefix. Set to `'0'` to disable.

**Raw JSON viewer** — click the `{ }` toggle on any message to see the full gateway payload as formatted JSON. Useful for understanding the protocol or reporting bugs.

**Metadata inspector** — hover over any message and click the ℹ️ icon to see message metadata (timestamp, ID, channel, sender info).

### Build errors from source

```bash
# Ensure Node.js 20+
node --version
# Clean install
rm -rf node_modules package-lock.json
npm install
npm run build
```

## 🔀 Reverse Proxy

PinchChat is a static SPA — serve it behind any reverse proxy. The only special requirement is WebSocket support for the OpenClaw gateway connection.

> **Note:** PinchChat itself only serves static files (HTML/JS/CSS). The WebSocket connection goes directly from the **browser** to your OpenClaw gateway, not through PinchChat's server. You only need to proxy WebSocket if you're also putting the gateway behind the same reverse proxy.

### Nginx

```nginx
server {
    listen 443 ssl;
    server_name chat.example.com;

    # PinchChat static files
    location / {
        proxy_pass http://127.0.0.1:3000;
        # Or serve directly from the build output:
        # root /path/to/pinchchat/dist;
        # try_files $uri $uri/ /index.html;
    }
}

# Optional: proxy the OpenClaw gateway too
server {
    listen 443 ssl;
    server_name gw.example.com;

    location / {
        proxy_pass http://127.0.0.1:18789;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 86400s;  # Keep WebSocket alive
    }
}
```

### Caddy

```caddyfile
chat.example.com {
    reverse_proxy 127.0.0.1:3000
}

# Optional: proxy the gateway
gw.example.com {
    reverse_proxy 127.0.0.1:18789
}
```

Caddy handles WebSocket upgrades and TLS automatically.

### Traefik (Docker labels)

```yaml
services:
  pinchchat:
    image: ghcr.io/marlburrow/pinchchat:latest
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.pinchchat.rule=Host(`chat.example.com`)"
      - "traefik.http.routers.pinchchat.tls.certresolver=letsencrypt"
      - "traefik.http.services.pinchchat.loadbalancer.server.port=80"
```

### Traefik (Kubernetes IngressRoute)

```yaml
apiVersion: traefik.io/v1alpha1
kind: IngressRoute
metadata:
  name: pinchchat
spec:
  entryPoints: [websecure]
  routes:
    - match: Host(`chat.example.com`)
      kind: Rule
      services:
        - name: pinchchat
          port: 80
  tls:
    certResolver: letsencrypt
```

### Important notes

- **HTTPS + WSS**: If PinchChat is served over HTTPS, the gateway URL must use `wss://` — browsers block mixed content (`https` page → `ws://` connection)
- **Timeouts**: Set generous read timeouts for the gateway proxy (WebSocket connections are long-lived). Nginx defaults to 60s which will drop the connection.
- **Buffering**: If images aren't loading, increase proxy buffer sizes (`proxy_buffer_size`, `proxy_buffers` in Nginx)
- **Health checks**: The PinchChat container responds to `GET /` with the SPA — use it as a health check endpoint

## 🛠 Tech Stack

- [React](https://react.dev/) 19
- [Vite](https://vite.dev/) 7
- [Tailwind CSS](https://tailwindcss.com/) v4
- [Radix UI](https://www.radix-ui.com/) primitives
- [highlight.js](https://highlightjs.org/) via rehype-highlight
- [Lucide React](https://lucide.dev/) icons
- [react-markdown](https://github.com/remarkjs/react-markdown) with GFM

## 📄 License

[MIT](LICENSE) © Nicolas Varrot

## 📋 Changelog

See [CHANGELOG.md](CHANGELOG.md) for a detailed history of changes.

## 🔒 Security

See [SECURITY.md](SECURITY.md) for the security policy and how to report vulnerabilities.

## 🤝 Contributing

Contributions are welcome! See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.

## 🔗 Links

- [OpenClaw](https://github.com/openclaw/openclaw) — the AI agent platform PinchChat connects to
