package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"os/user"
	"path/filepath"
)

const help = `unnamed-project: WIP

Options:
	-n    node identifier (default: your system username)
	-p    path to share files (default: current working directory)
	-w    port for web server (default: 1312)
	-s    port for file server (default: 5555)
	-d    debug logging
	-h    output help
`

var nodeIDFlag string
var pathFlag string
var webPortFlag int
var filePortFlag int
var debugFlag bool
var helpFlag bool

func main() {
	systemUser, err := user.Current()
	if err != nil {
		log.Fatalln(err)
	}

	cwdAbsPath, err := filepath.Abs(".")
	if err != nil {
		log.Fatalln(err)
	}

	handleCliFlags(systemUser.Name, cwdAbsPath)

	if helpFlag {
		fmt.Printf(help)
		os.Exit(0)
	}

	conf := &config{
		nodeID:    nodeIDFlag,
		webPort:   webPortFlag,
		filePort:  filePortFlag,
		sharePath: pathFlag,
		debug:     debugFlag,
	}

	fmt.Println(conf)

}

func handleCliFlags(username, sharePath string) {
	flag.StringVar(&nodeIDFlag, "n", username, "node identifier")
	flag.StringVar(&pathFlag, "p", sharePath, "path to share files")
	flag.IntVar(&webPortFlag, "w", 1312, "port for web server")
	flag.IntVar(&filePortFlag, "s", 5555, "port for file server")
	flag.BoolVar(&debugFlag, "d", false, "debug logging")
	flag.BoolVar(&helpFlag, "h", false, "output help")
	flag.Parse()
}

type config struct {
	nodeID    string
	webPort   int
	filePort  int
	sharePath string
	debug     bool
}