package main

import (
	"flag"
	"fmt"
	"os"
)

// Version of the program
const VERSION = "1.0.0"

// Config holds all command-line arguments
type Args struct {
	Version bool
	Debug   bool
	Help    bool
}

// ParseArgs parses the command-line arguments into a Args struct
func ParseArgs() Args {
	var versionShortFlag bool
	var versionLongFlag bool
	var debugShortFlag bool
	var debugLongFlag bool
	var helpShortFlag bool
	var helpLongFlag bool

	flag.BoolVar(&versionShortFlag, "v", false, "Print version information")
	flag.BoolVar(&versionLongFlag, "version", false, "Print version information")
	flag.BoolVar(&debugShortFlag, "d", false, "Enable debug mode")
	flag.BoolVar(&debugLongFlag, "debug", false, "Enable debug mode")
	flag.BoolVar(&helpShortFlag, "h", false, "Show help")
	flag.BoolVar(&helpLongFlag, "help", false, "Show help")
	flag.Parse()

	return Args{
		Version: versionShortFlag || versionLongFlag,
		Debug:   debugShortFlag || debugLongFlag,
		Help:    helpShortFlag || helpLongFlag,
	}
}

// init is called before main. Use it to set up your app
func init() {
}

func main() {
	args := ParseArgs()

	// Handle version flag
	if args.Version {
		fmt.Println(VERSION)
		os.Exit(0)
	}

	// Handle help
	if args.Help {
		fmt.Println("Usage: mycli [options]")
		flag.PrintDefaults()
		os.Exit(0)
	}

	fmt.Println("Hello, World!")
	if args.Debug {
		fmt.Println("Debug mode is on!")
	}
}