# Project Overview

This project is a web-based application for monitoring and logging data from a Siemens S7 PLC. It consists of a Python backend and a React frontend.

**Backend:**

*   **Framework:** Flask
*   **PLC Communication:** `python-snap7`
*   **Data Processing:** pandas, numpy
*   **Functionality:**
    *   Provides a REST API for interacting with the PLC.
    *   Streams data from the PLC in real-time.
    *   Logs data to CSV files with rotation and cleanup.
    *   Manages PLC and application configurations.
    *   Serves the React frontend.

**Frontend:**

*   **Framework:** React
*   **Build Tool:** Vite
*   **UI Library:** Chakra UI
*   **Charting:** Chart.js
*   **Internationalization:** i18next
*   **Functionality:**
    *   Provides a user interface for configuring the PLC connection and data logging.
    *   Displays real-time data from the PLC in charts.
    *   Allows browsing and visualizing historical data.

# Building and Running

**1. Install Dependencies:**

*   **Backend:** `pip install -r requirements.txt`
*   **Frontend:** `cd frontend && npm install`

**2. Build the Frontend:**

```bash
cd frontend && npm run build
```

**3. Run the Application:**

*   **Development:**
    1.  Start the backend: `python main.py`
    2.  Start the frontend dev server: `cd frontend && npm run dev`
*   **Production (standalone executable):**
    1.  Build the frontend as described above.
    2.  Clean previous builds: `rmdir /s /q build dist`
    3.  Run PyInstaller: `conda activate snap7v12; pyinstaller main.spec --clean`

The production build will create a single executable file in the `dist` directory.

# Development Conventions

*   The backend follows a modular structure with a `core` directory containing the main application logic.
*   The frontend is located in the `frontend` directory and follows standard React project conventions.
*   Configuration is managed through JSON files in the `config/data` directory.
*   The application uses a rotating logger system for the backend, with logs stored in the `.logs` directory.