package main

import (
	"flag"
	"os"
	"os/signal"
	"syscall"

	"dev.sum7.eu/genofire/golang-lib/file"
	"github.com/bdlm/log"
	"gosrc.io/xmpp"
	"gosrc.io/xmpp/stanza"

	"dev.sum7.eu/ccchb/ccchatbot/mqtt"
	"dev.sum7.eu/ccchb/ccchatbot/runtime"
)

var config = Config{}

func main() {
	configFile := "config.toml"
	flag.StringVar(&configFile, "config", configFile, "path of configuration file")
	flag.Parse()

	if err := file.ReadTOML(configFile, &config); err != nil {
		log.WithField("tip", "maybe call me with: ccchatbot --config /etc/ccchatbot.conf").Panicf("error on read config: %s", err)
	}

	log.SetLevel(config.LogLevel)

	var mqttService *mqtt.Service
	if config.MQTT != nil {
		mqttService = mqtt.Connect(config.MQTT)
	}

	router := xmpp.NewRouter()
	router.HandleFunc("presence", handlePresence)
	router.HandleFunc("message", func(s xmpp.Sender, p stanza.Packet) {
		msg, ok := p.(stanza.Message)
		if !ok {
			log.Errorf("ignoring wrong routed packet: %T", p)
			return
		}
		if ok := config.Schalter.HandleBotMessage(s, msg); ok {
			return
		}
		if mqttService != nil {
			if ok := mqttService.HandleBotMessage(s, msg); ok {
				return
			}
		}
		log.Debugf("no bot has handle message of %s: %s", msg.From, msg.Body)
	})

	var err error
	client, err := xmpp.NewClient(xmpp.Config{
		Address:  config.XMPP.Host,
		Jid:      config.XMPP.JID,
		Password: config.XMPP.Password,
	}, router)

	config.Schalter.ChangeEvent = append(config.Schalter.ChangeEvent, config.Schalter.XMPPChangeEvent(client))
	if mqttService != nil {
		config.Schalter.ChangeEvent = append(config.Schalter.ChangeEvent, mqttService.HandleSchalterStateChange)
	}
	if err != nil {
		log.Panicf("error on startup xmpp client: %s", err)
	}

	cm := xmpp.NewStreamManager(client, func(s xmpp.Sender) {
		config.Schalter.Start(s)
	})
	go func() {
		err := cm.Run()
		log.Panic("closed connection:", err)
	}()

	// Wait for system signal
	sigs := make(chan os.Signal, 1)
	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
	sig := <-sigs

	if mqttService != nil {
		mqttService.Close()
	}

	config.Schalter.Close()

	runtime.LeaveAllMUCs(client)

	log.Infof("closed by receiving: %s", sig)
}