#!/bin/bash
# Installation script for home-pump service on Raspberry Pi/Ubuntu

set -e

echo "Home Pump Service Installation Script"
echo "======================================"

# Check if running as root
if [ "$EUID" -ne 0 ]; then 
    echo "Please run as root (use sudo)"
    exit 1
fi

# Configuration
PROJECT_DIR="/home/pi/home-pump"
SERVICE_FILE="scripts/home-pump.service"
JAR_FILE="target/home-pump-1.0.0.jar"

# Check if project directory exists
if [ ! -d "$PROJECT_DIR" ]; then
    echo "Error: Project directory $PROJECT_DIR not found"
    echo "Please adjust PROJECT_DIR in this script or create the directory"
    exit 1
fi

cd "$PROJECT_DIR"

# Check if JAR file exists
if [ ! -f "$JAR_FILE" ]; then
    echo "Error: JAR file not found at $JAR_FILE"
    echo "Please build the project first using: mvn clean package"
    exit 1
fi

# Install systemd service
echo "Installing systemd service..."
cp "$SERVICE_FILE" /etc/systemd/system/home-pump.service
systemctl daemon-reload
echo "✓ Systemd service installed"

# Enable service to start on boot
systemctl enable home-pump.service
echo "✓ Service enabled to start on boot"

# Start the service
systemctl start home-pump.service
echo "✓ Service started"

# Wait a bit and check status
sleep 3
if systemctl is-active --quiet home-pump.service; then
    echo ""
    echo "✓✓✓ Installation completed successfully! ✓✓✓"
    echo ""
    echo "Service status:"
    systemctl status home-pump.service --no-pager -l
    echo ""
    echo "How it works:"
    echo "  - Application monitors health internally"
    echo "  - On consecutive failures (default 3), app exits with error code"
    echo "  - Systemd automatically restarts the service (Restart=on-failure)"
    echo "  - No external monitoring script needed"
    echo ""
    echo "Useful commands:"
    echo "  - View logs:           journalctl -u home-pump.service -f"
    echo "  - Check status:        systemctl status home-pump.service"
    echo "  - Restart service:     sudo systemctl restart home-pump.service"
    echo "  - Stop service:        sudo systemctl stop home-pump.service"
    echo "  - Health check:        curl http://localhost:8080/health"
else
    echo ""
    echo "⚠ Warning: Service installed but not running properly"
    echo "Check logs with: journalctl -u home-pump.service -n 50"
fi