package main

import (
	"bufio"
	"crypto/tls"
	"flag"
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/mattn/go-xmpp"
)

var (
	server        = flag.String("server", "talk.google.com:443", "server")
	username      = flag.String("username", "", "username")
	password      = flag.String("password", "", "password")
	status        = flag.String("status", "xa", "status")
	statusMessage = flag.String("status-msg", "I for one welcome our new codebot overlords.", "status message")
	notls         = flag.Bool("notls", false, "No TLS")
	debug         = flag.Bool("debug", false, "debug output")
	session       = flag.Bool("session", false, "use server session")
)

func serverName(host string) string {
	return strings.Split(host, ":")[0]
}

func main() {
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: example [options]\n")
		flag.PrintDefaults()
		os.Exit(2)
	}
	flag.Parse()
	if *username == "" || *password == "" {
		if *debug && *username == "" && *password == "" {
			fmt.Fprintf(os.Stderr, "no username or password were given; attempting ANONYMOUS auth\n")
		} else if *username != "" || *password != "" {
			flag.Usage()
		}
	}

	if !*notls {
		xmpp.DefaultConfig = tls.Config{
			ServerName:         serverName(*server),
			InsecureSkipVerify: false,
		}
	}

	var talk *xmpp.Client
	var err error
	options := xmpp.Options{
		Host:          *server,
		User:          *username,
		Password:      *password,
		NoTLS:         *notls,
		Debug:         *debug,
		Session:       *session,
		Status:        *status,
		StatusMessage: *statusMessage,
	}

	talk, err = options.NewClient()

	if err != nil {
		log.Fatal(err)
	}

	go func() {
		for {
			chat, err := talk.Recv()
			if err != nil {
				log.Fatal(err)
			}
			switch v := chat.(type) {
			case xmpp.Chat:
				fmt.Println(v.Remote, v.Text)
			case xmpp.Presence:
				fmt.Println(v.From, v.Show)
			}
		}
	}()
	for {
		in := bufio.NewReader(os.Stdin)
		line, err := in.ReadString('\n')
		if err != nil {
			continue
		}
		line = strings.TrimRight(line, "\n")

		tokens := strings.SplitN(line, " ", 2)
		if len(tokens) == 2 {
			talk.Send(xmpp.Chat{Remote: tokens[0], Type: "chat", Text: tokens[1]})
		}
	}
}