# State Machine Copilot

Transform complex conversational flows into manageable state machines. This AI-powered car sales application demonstrates how to build sophisticated multi-stage interactions with contextual awareness and state transitions.

[Click here for a running example](https://copilotkit.ai/examples/state-machine-copilot)

<div align="center">
  <img src="./assets/preview.png" alt="State Machine Copilot for Car Sales"/>

  <a href="https://copilotkit.ai" target="_blank">
    <img src="https://img.shields.io/badge/Built%20with-CopilotKit-6963ff" alt="Built with CopilotKit"/>
  </a>
  <a href="https://nextjs.org" target="_blank">
    <img src="https://img.shields.io/badge/Built%20with-Next.js%2014-black" alt="Built with Next.js"/>
  </a>
  <a href="https://reactflow.dev/" target="_blank">
    <img src="https://img.shields.io/badge/Visualized%20with-React%20Flow-ff0072" alt="Visualized with React Flow"/>
  </a>
</div>

## 🚗 Overview

This application simulates a car dealership experience where an AI assistant guides users through a multi-stage process:

1. **Contact Information** - Collecting customer details
2. **Car Selection** - Helping users build their dream car
3. **Financing Options** - Offering payment alternatives
4. **Payment Processing** - Handling financing or direct payment
5. **Order Confirmation** - Finalizing the purchase

The example showcases how to implement complex conversational flows using a state machine pattern with CopilotKit.

## 🛠️ Getting Started

### Prerequisites

- Node.js 18+
- npm, yarn, or pnpm

### Installation

1. Clone the repository:

   ```bash
   git clone https://github.com/CopilotKit/CopilotKit.git
   cd CopilotKit/examples/copilot-state-machine
   ```

2. Install dependencies:

   ```bash
   pnpm install
   ```

   <details>
     <summary><b>Using other package managers</b></summary>
     
     ```bash
     # Using yarn
     yarn install
     
     # Using npm
     npm install
     ```
   </details>

3. Create a `.env` file in the project root and add your [Copilot Cloud Public API Key](https://cloud.copilotkit.ai):

   ```
   NEXT_PUBLIC_CPK_PUBLIC_API_KEY=your_api_key_here
   ```

4. Start the development server:

   ```bash
   pnpm dev
   ```

   <details>
     <summary><b>Using other package managers</b></summary>
     
     ```bash
     # Using yarn
     yarn dev
     
     # Using npm
     npm run dev
     ```
   </details>

5. Open [http://localhost:3000](http://localhost:3000) in your browser to see the application.

## 🧩 How It Works

This demo uses several key CopilotKit features to implement a state machine pattern:

### State Machine Architecture

The application is structured around 6 distinct stages, each with its own hook in the `stages` directory:

1. [getContactInfo](./src/lib/stages/use-stage-get-contact-info.tsx) - Collecting customer information
2. [buildCar](./src/lib/stages/use-stage-build-car.tsx) - Configuring car options
3. [sellFinancing](./src/lib/stages/use-stage-sell-financing.tsx) - Presenting financing options
4. [getFinancingInfo](./src/lib/stages/use-stage-get-financing-info.tsx) - Collecting financing details
5. [getPaymentInfo](./src/lib/stages/use-stage-get-payment-info.tsx) - Processing payment information
6. [confirmOrder](./src/lib/stages/use-stage-confirm-order.tsx) - Finalizing the order

Each stage hook encapsulates stage-specific CopilotKit configuration and prompts.

### Global State Management

The [use-global-state.tsx](./src/lib/stages/use-global-state.tsx) hook manages the application's global state, while the [car-sales-chat.tsx](./src/components/car-sales-chat.tsx) component ties all stages together.

### State Visualization

A [React Flow](https://reactflow.dev/) powered visualizer ([state-visualizer.tsx](./src/components/state-visualizer.tsx)) displays the current state and possible transitions, updating in real-time as the conversation progresses.

### CopilotKit Integration

Each stage uses CopilotKit's hooks to provide context-aware AI assistance:

```tsx
// Example from use-stage-build-car.tsx
useCopilotAction({
  name: "updateCarConfiguration",
  description: "Update the car configuration based on user preferences",
  parameters: [
    {
      name: "model",
      type: "string",
      required: true,
      description: "The car model selected by the user",
    },
    // Other parameters...
  ],
  handler: async (action) => {
    // Update state with the new configuration
  },
});
```

## 📚 Learn More

Ready to build your own AI-powered state machine? Check out these resources:

- [CopilotKit Documentation](https://docs.copilotkit.ai) - Comprehensive guides and API references
- [CopilotKit Cloud](https://cloud.copilotkit.ai/) - Deploy your copilots with our managed cloud solution
- [React Flow Documentation](https://reactflow.dev/docs/introduction/) - Learn more about building interactive node-based UIs

## 🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.
