#!/bin/bash

# Network Packet Capture - Installation Script
# This script installs system dependencies and Node.js packages

set -e

echo "=================================="
echo "Network Packet Capture - Installer"
echo "=================================="
echo ""

# Check if running as root
if [ "$EUID" -eq 0 ]; then
  SUDO=""
else
  SUDO="sudo"
fi

# Detect OS
if [ -f /etc/os-release ]; then
  . /etc/os-release
  OS=$ID
else
  OS=$(uname -s)
fi

echo "Detected OS: $OS"
echo ""

# Install system dependencies
echo "Installing system dependencies..."
case $OS in
  ubuntu|debian|linuxmint)
    echo "Installing libpcap-dev and build-essential..."
    $SUDO apt-get update
    $SUDO apt-get install -y libpcap-dev build-essential
    ;;
  fedora|rhel|centos)
    echo "Installing libpcap-devel and development tools..."
    $SUDO yum install -y libpcap-devel gcc-c++ make
    ;;
  arch|manjaro)
    echo "Installing libpcap and base-devel..."
    $SUDO pacman -S --noconfirm libpcap base-devel
    ;;
  Darwin)
    echo "Installing Xcode Command Line Tools..."
    xcode-select --install || echo "Xcode tools already installed"
    ;;
  *)
    echo "Warning: Unknown OS. Please install libpcap development libraries manually."
    echo "For Debian/Ubuntu: sudo apt-get install libpcap-dev build-essential"
    echo "For RHEL/CentOS: sudo yum install libpcap-devel gcc-c++ make"
    exit 1
    ;;
esac

echo ""
echo "System dependencies installed successfully!"
echo ""

# Install Node.js dependencies
echo "Installing Node.js dependencies..."
npm install

echo ""
echo "=================================="
echo "Installation completed successfully!"
echo "=================================="
echo ""
echo "Next steps:"
echo "1. Configure your settings: cp .env.example .env && nano .env"
echo "2. Make sure Elasticsearch is running"
echo "3. Run the capture: sudo npm start"
echo ""