Add uninstaller

Signed-off-by: Tiago Garcia <tiago.rgarcia@ua.pt>

README.md

@@ -14,6 +14,12 @@ Run the installation script to install the application:
 curl -fsSL https://cdn.tiagorg.pt/gh-wh-handler/install.sh | sudo sh
 ```
 
+You can uninstall the application using the following command:
+
+```console
+curl -fsSL https://cdn.tiagorg.pt/gh-wh-handler/uninstall.sh | sudo sh
+```
+
 ### Run prebuilt binary
 
 Head over to the [Releases Page](https://github.com/TiagoRG/gh-wh-handler/releases) and download the desired binary.
@@ -55,6 +61,11 @@ cmake ..
 sudo make install
 ```
 
+If you want to uninstall the application, you can run the following command:
+```console
+sudo make uninstall
+```
+
 ## Usage
 
 The application is running on a systemd service, which is both enabled and started after installation.

installer/uninstall.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+# Check if the script is being run as root
+if [ "$(id -u)" -ne 0 ]; then
+    echo "This script must be run as root."
+    exit 1
+fi
+
+# Save the current directory
+CUR_DIR=$(pwd)
+
+# Get system architecture
+ARCH=$(uname -m)
+
+echo "Uninstalling gh-wh-handler..."
+
+# Stop and disable the service
+echo "Stopping and disabling service..."
+systemctl stop gh-wh-handler
+systemctl disable gh-wh-handler
+
+# Remove the service file
+echo "Removing service file..."
+rm /etc/systemd/system/gh-wh-handler.service
+
+# Reload systemd
+echo "Reloading systemd..."
+systemctl daemon-reload
+
+# Remove the symbolic link
+echo "Removing symbolic link..."
+rm /usr/bin/gh-wh-handler
+
+# Remove the logs directory and binary
+echo "Removing files..."
+rm -rf /services/gh-wh-handler/logs
+rm -f /services/gh-wh-handler/gh-wh-handler.${ARCH}
+
+# Change back to the original directory
+cd $CUR_DIR
+echo "Uninstallation complete."
+