#!/bin/bash

# Installation script for VizionStreamer systemd service

set -e

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

SERVICE_NAME="vizionstreamer.service"
SERVICE_FILE="$(pwd)/vizionstreamer.service"
SYSTEMD_DIR="/etc/systemd/system"

echo -e "${GREEN}=== VizionStreamer Service Installation ===${NC}\n"

# Check if running as root
if [ "$EUID" -ne 0 ]; then
    echo -e "${RED}Error: This script must be run as root (use sudo)${NC}"
    exit 1
fi

# Check if service file exists
if [ ! -f "$SERVICE_FILE" ]; then
    echo -e "${RED}Error: Service file not found: $SERVICE_FILE${NC}"
    exit 1
fi

# Check if vizionStreamer executable exists
if [ ! -f "/home/maik/CLionProjects/vizionStreamer/build/vizionStreamer" ]; then
    echo -e "${YELLOW}Warning: vizionStreamer executable not found!${NC}"
    echo "Please build the project first: cmake --build build"
    read -p "Continue anyway? (y/N) " -n 1 -r
    echo
    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
        exit 1
    fi
fi

# Stop service if already running
if systemctl is-active --quiet $SERVICE_NAME; then
    echo "Stopping existing service..."
    systemctl stop $SERVICE_NAME
fi

# Copy service file
echo "Installing service file to $SYSTEMD_DIR..."
cp "$SERVICE_FILE" "$SYSTEMD_DIR/"

# Reload systemd
echo "Reloading systemd daemon..."
systemctl daemon-reload

# Enable service
echo "Enabling service to start on boot..."
systemctl enable $SERVICE_NAME

# Start service
echo "Starting service..."
systemctl start $SERVICE_NAME

# Show status
echo -e "\n${GREEN}Installation complete!${NC}\n"
systemctl status $SERVICE_NAME --no-pager

echo -e "\n${GREEN}=== Useful Commands ===${NC}"
echo "  Start:   sudo systemctl start $SERVICE_NAME"
echo "  Stop:    sudo systemctl stop $SERVICE_NAME"
echo "  Restart: sudo systemctl restart $SERVICE_NAME"
echo "  Status:  sudo systemctl status $SERVICE_NAME"
echo "  Logs:    sudo journalctl -u $SERVICE_NAME -f"
echo "  Disable: sudo systemctl disable $SERVICE_NAME"