#!/bin/bash

# Function to detect OS
get_os() {
    case "$(uname -s)" in
        Linux*)     echo "linux";;
        Darwin*)    echo "darwin";;
        CYGWIN*|MINGW*|MSYS*|MINGW*) echo "windows";;
        *)          echo "unknown";;
    esac
}

# Function to detect CPU architecture
get_arch() {
    case "$(uname -m)" in
        x86_64|amd64)   echo "amd64";;
        arm64|aarch64)  echo "arm64";;
        *)              echo "Unsupported architecture: $(uname -m)"; exit 1;;
    esac
}

# Function to change file permissions using native OS commands
change_permissions() {
    local file_path="$1"
    local permissions="$2"

    case "$OS" in
        linux|darwin)
            # Use chmod for Linux and macOS
            chmod $permissions "$file_path"
            ;;
        windows)
            # For Windows, we'll skip changing permissions
            echo "Skipping permission change on Windows for $file_path"
            ;;
        *)
            echo "Unsupported OS for changing permissions"
            return 1
            ;;
    esac
}

# Function to get IP on Linux and macOS
get_ip_unix() {
    if command -v ip >/dev/null 2>&1; then
        ip addr show | grep "inet " | grep -v 127.0.0.1 | awk '{print $2}' | cut -d "/" -f 1 | head -n 1
    elif command -v ifconfig >/dev/null 2>&1; then
        ifconfig | grep "inet " | grep -v 127.0.0.1 | awk '{print $2}' | head -n 1
    else
        echo "Unable to find IP address. Neither 'ip' nor 'ifconfig' command found."
        exit 1
    fi
}

# Function to get IP on Windows
get_ip_windows() {
    ipconfig | grep -i "IPv4 Address" | awk '{print $NF}' | head -n 1
}

# Detect the operating system and call the appropriate function
get_ip() {
  case "$(uname -s)" in
      Linux*|Darwin*)
          echo $(get_ip_unix)
          ;;
      CYGWIN*|MINGW32*|MSYS*|MINGW*)
          echo $(get_ip_windows)
          ;;
      *)
          echo "Unsupported operating system"
          exit 1
          ;;
  esac
}