# Sequential Thinking with Chat Logging

This Gradio application now includes automatic chat logging for all thoughts and thinking processes.

## Chat Logging Features

### Local Logging (Always Enabled)

All thought records are automatically logged to a local JSONL file at `logs/chat_logs.jsonl`:

```json
{
  "session_id": "abc123xyz789...",
  "model_name": "sequential-thinking",
  "thought": "Let me break down this problem step by step...",
  "thought_number": 1,
  "total_thoughts": 5,
  "metadata": {
    "is_revision": false,
    "revises_thought": null,
    "branch_from_thought": null,
    "branch_id": null,
    "needs_more_thoughts": false,
    "next_thought_needed": true
  },
  "timestamp": "2024-01-15T10:30:00.123456"
}
```

#### Accessing Local Logs

Local logs are written asynchronously to `logs/chat_logs.jsonl`. Each line is a complete JSON object representing one thought entry.

### HuggingFace Dataset Upload (Optional)

If you have HuggingFace Hub credentials configured, logs are automatically uploaded periodically:

#### Configuration

Set these environment variables:

```bash
export HF_TOKEN=hf_xxxxxxxxxxxxx
export HF_DATASET_REPO=username/my-sequential-thinking-logs
```

#### Upload Behavior

- **Interval**: Every 5 minutes (configurable in `chat_logger.py`)
- **Format**: Timestamped files named `logs/chat_logs_YYYYMMDD_HHMMSS.jsonl`
- **Cleanup**: Local file is cleared after successful upload
- **Fallback**: If upload fails, logs remain locally and retry on next interval

#### Creating a HuggingFace Dataset

If the dataset doesn't exist, the logger creates it automatically on first upload (must be private).

## Running the App

### Standard Launch

```bash
python app.py
```

The app will:
1. Start the Gradio interface at `http://localhost:7860`
2. Begin logging all thoughts to `logs/chat_logs.jsonl`
3. Upload to HuggingFace (if configured) every 5 minutes
4. Flush remaining logs on shutdown

### Environment Variables

| Variable | Default | Description |
|----------|---------|-------------|
| `HF_TOKEN` | - | HuggingFace API token (optional) |
| `HF_DATASET_REPO` | - | HuggingFace dataset repo ID (optional) |
| `DISABLE_THOUGHT_LOGGING` | `false` | Suppress console output of thoughts |

### Disabling Console Output

```bash
DISABLE_THOUGHT_LOGGING=true python app.py
```

Logs will still be saved locally; only console printing is suppressed.

## MCP Server

The app also exposes an MCP (Model Context Protocol) endpoint:

**SSE Endpoint**: `http://localhost:7860/gradio_api/mcp/sse`

Configure in your MCP client:

```json
{
  "mcpServers": {
    "sequential-thinking": {
      "url": "http://localhost:7860/gradio_api/mcp/sse"
    }
  }
}
```

## Log Data Structure

Each logged thought contains:

- **session_id**: Unique identifier for the current thinking session
- **model_name**: Always `"sequential-thinking"` for this app
- **thought**: The actual thought text
- **thought_number**: Current step number
- **total_thoughts**: Estimated total steps
- **metadata**: Additional context including revision/branch info
- **timestamp**: ISO 8601 timestamp

## Sessions

A new session ID is generated:
- When the app starts
- When "Reset Session" is clicked in the UI

All thoughts in a session share the same `session_id`, making it easy to group related thinking processes.

## Data Privacy

- Local logs are stored in `logs/chat_logs.jsonl` on your machine
- Only uploaded to HuggingFace if credentials are configured
- Uploaded datasets are set to private by default
- Logs are cleared from local storage after successful HuggingFace upload

## Troubleshooting

### Logs Not Appearing

1. Check that `logs/` directory exists: `ls logs/`
2. Verify JSONL file: `tail -f logs/chat_logs.jsonl`
3. Check console for any error messages

### HuggingFace Upload Issues

1. Verify `HF_TOKEN` is valid: `huggingface-cli whoami`
2. Ensure `HF_DATASET_REPO` follows format: `username/repo-name`
3. Check internet connection
4. Logs will retry on next interval; check for error messages in console

### Performance

Logging runs in background threads and has minimal impact on performance:
- Queue-based async processing
- Non-blocking JSONL writes
- Periodic batch uploads to HuggingFace