# Installation Script for OpenEMS

This installation script automates the setup of OpenEMS on a server. It performs the following tasks:

1. **Host Configuration**: Prompts the user to enter the host name for the server. If no input is provided, it defaults to the current hostname.

2. **UI Default Setting**: Asks the user if they want to set the OpenEMS UI as the default for the server. If confirmed, it warns that this will override the default Nginx configuration.

3. **Package Installation**: Updates the package list and installs the required packages, including OpenJDK 17, Nginx, and Wget.

4. **OpenEMS Service Setup**: Downloads the OpenEMS system service configuration and sets up the necessary directories and files for OpenEMS.

5. **Nginx Configuration**: Sets up the Nginx server to serve the OpenEMS UI, including downloading the UI files and configuring the Nginx site.

6. **Service Management**: Reloads the systemd manager configuration, enables, and starts the OpenEMS service, and restarts Nginx to apply the new configuration.

### Installation Instructions

You can install OpenEMS by following these steps:

1. Download the installation script:
```bash
curl -O https://git.mumme-it.de/Mumme-IT/openems-build/src/branch/main/installation/install-openems.sh
```

2. Review the script contents (recommended for security):
```bash
less install-openems.sh
```

3. Make the script executable:
```bash
chmod +x install-openems.sh
```

4. Run the script with sudo:
```bash
sudo ./install-openems.sh
```