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install_service.sh

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+#!/bin/bash
+# install_service.sh
+# This script must be run with sudo on the target machine.
+# It installs the Wilcon Agent as a systemd service.
+
+set -e # Exit immediately if a command exits with a non-zero status.
+
+echo "--- Wilcon Agent Service Installer ---"
+
+# Check if running as root
+if [ "$EUID" -ne 0 ]; then
+    echo "Please run this script with sudo: sudo ./install_service.sh"
+    exit 1
+fi
+
+# --- Configuration ---
+AGENT_USER="agent_user"
+SERVICE_NAME="wilcon-agent"
+BACKEND_SCRIPT="wilcon.py"
+FRONTEND_FILE="index.html"
+
+# Determine the script's own directory to find project files
+# This makes the script location-independent.
+INSTALL_PATH=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)
+echo "Installation path detected: $INSTALL_PATH"
+
+# Determine the primary IP address of the machine for configuration
+# This is needed for CORS and the frontend API URL.
+TARGET_IP=$(hostname -I | awk '{print $1}')
+if [ -z "$TARGET_IP" ]; then
+    echo "Error: Could not determine the IP address of this machine."
+    exit 1
+fi
+echo "Machine IP address detected: $TARGET_IP"
+BACKEND_PORT="8080" # This should match the port in wilcon.py
+
+LOG_DIR="/var/log/wilcon-agent"
+
+# --- Installation Steps ---
+
+# 1. Create log directory
+echo "   Creating log directory at $LOG_DIR..."
+mkdir -p "$LOG_DIR"
+
+# 2. Create a non-login system user to run the service
+if ! id -u "$AGENT_USER" >/dev/null 2>&1; then
+    echo "   Creating system user '$AGENT_USER'..."
+    useradd -r -s /bin/false "$AGENT_USER"
+else
+    echo "   System user '$AGENT_USER' already exists."
+fi
+
+# Set ownership of the log directory now that the user is guaranteed to exist
+chown "${AGENT_USER}:${AGENT_USER}" "$LOG_DIR"
+
+# 3. Check for Python and install if necessary
+echo "   Checking for Python 3.10..."
+# On Debian/Ubuntu, python3-venv is a separate package needed for creating virtual environments.
+# We check for both the python command and the venv package.
+if ! command -v python3.10 &>/dev/null || ! dpkg -s python3.10-venv &>/dev/null; then
+    echo "   Python 3.10 and/or python3.10-venv not found. Attempting to install..."
+    apt update && apt install -y python3.10 python3.10-venv
+    if [ $? -ne 0 ]; then
+        echo "   Error: Failed to install Python 3.10 and/or python3.10-venv. Please install them manually."
+        exit 1
+    fi
+fi
+
+# 4. Create virtual environment and install dependencies
+echo "   Creating Python virtual environment in $INSTALL_PATH/venv..."
+echo "   Ensuring clean state for virtual environment..."
+rm -rf "$INSTALL_PATH/venv"
+python3.10 -m venv "$INSTALL_PATH/venv"
+
+echo "   Installing Python dependencies..."
+# Activate venv and install
+"$INSTALL_PATH/venv/bin/pip" install -r "$INSTALL_PATH/requirements.txt"
+if [ $? -ne 0 ]; then
+    echo "   Error: Failed to install Python dependencies. Check requirements.txt."
+    exit 1
+fi
+
+# 5. Configure application files
+echo "   Configuring frontend API URL in $FRONTEND_FILE..."
+sed -i "s|const API_BASE_URL = \".*\";|const API_BASE_URL = \"http://${TARGET_IP}:${BACKEND_PORT}\";|" "$INSTALL_PATH/$FRONTEND_FILE"
+
+echo "   Modifying $BACKEND_SCRIPT for network access..."
+# This sed command inserts the new origin after the line containing "http://127.0.0.1:8080","
+sed -i "/\"http:\/\/127.0.0.1:8080\",/a \ \ \ \ \"http://${TARGET_IP}:${BACKEND_PORT}\"," "$INSTALL_PATH/$BACKEND_SCRIPT"
+
+# 6. Set final ownership for the application directory
+echo "   Setting final ownership for '$AGENT_USER'..."
+chown -R "${AGENT_USER}:${AGENT_USER}" "$INSTALL_PATH"
+
+# 7. Create systemd service file
+echo "   Creating systemd service file..."
+SERVICE_FILE_PATH="/etc/systemd/system/${SERVICE_NAME}.service"
+tee "$SERVICE_FILE_PATH" >/dev/null <<EOF_SERVICE
+[Unit]
+Description=Wilcon Client Dashboard Agent
+After=network.target
+
+[Service]
+User=${AGENT_USER}
+Group=${AGENT_USER}
+WorkingDirectory=${INSTALL_PATH}
+ExecStart=${INSTALL_PATH}/venv/bin/uvicorn wilcon:app --host 0.0.0.0 --port 8080
+Restart=always
+Environment="LOG_DIR=${LOG_DIR}"
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF_SERVICE
+
+# 8. Reload systemd, enable and start the service
+echo "   Reloading systemd, enabling and starting service..."
+systemctl daemon-reload
+systemctl enable "$SERVICE_NAME.service"
+systemctl restart "$SERVICE_NAME.service"
+echo "   Service status:"
+systemctl status "$SERVICE_NAME.service" --no-pager
+
+echo ""
+echo "--- Installation Complete! ---"
+echo "The Wilcon Client Dashboard is now running as a service."
+echo "You can access the dashboard from any browser on your network at:"
+echo "  => http://$TARGET_IP:$BACKEND_PORT/$FRONTEND_FILE"
+echo ""
+echo "To manage the service, you can use these commands:"
+echo "  sudo systemctl status $SERVICE_NAME"
+echo "  sudo systemctl stop $SERVICE_NAME"
+echo "  sudo systemctl start $SERVICE_NAME"
+echo "  sudo journalctl -u $SERVICE_NAME -f  (to view logs)"