# OTA Fleet Management - Backend API

This project hosts the ASP.NET Core Web API for the OTA Fleet Management System. It handles vehicle registration, group management, firmware uploads, and deployment orchestration.

## Tech Stack
*   **.NET 9 / ASP.NET Core**: High-performance web framework.
*   **Entity Framework Core**: ORM for data access.
*   **SQLite**: Lightweight database (configured for In-Memory for tests/demo, file-based for persistence).

## Key Features
*   **Vehicle Management**: Register vehicles, heartbeat tracking.
*   **Group Management**: Organize vehicles into logical groups (e.g., "Beta", "Production").
*   **Firmware Repository**: Upload and version firmware files.
*   **Deployment Logic**: Assign updates to specific vehicles or entire groups.
*   **Object Cycle Handling**: Configured to handle bidirectional relationships in JSON serialization.

## Getting Started

1.  **Run the API**:
    ```bash
    dotnet run
    ```
    The API listens on `http://localhost:5000` (HTTP) and `https://localhost:5001` (HTTPS) by default.

2.  **API Documentation**:
    Navigate to `http://localhost:5000/swagger` to view the Swagger UI and test endpoints.

## Project Structure
*   `Endpoints/`: Minimal API endpoint definitions.
*   `Data/`: EF Core DbContext and Entities.
*   `Properties/launchSettings.json`: Configuration for local development ports.