package main

import (
	"os/signal"
	"syscall"

	//"crypto/x509"

	"io/ioutil"
	"log"
	"os"

	"gopkg.in/yaml.v2"

	"github.com/ssp97/mqtt_relay/config"
	"github.com/ssp97/mqtt_relay/mqtt"
)

// LoadConfig loads configuration from a YAML file
func LoadConfig(filename string) (*config.Config, error) {
	data, err := ioutil.ReadFile(filename)
	if err != nil {
		return nil, err
	}

	var cfg config.Config
	err = yaml.Unmarshal(data, &cfg)
	if err != nil {
		return nil, err
	}

	return &cfg, nil
}

func main() {

	sigs := make(chan os.Signal, 1)
	done := make(chan bool, 1)
	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
	go func() {
		<-sigs
		done <- true
	}()

	// Load configuration
	cfg, err := LoadConfig("userdata/config.yml")
	if err != nil {
		log.Fatalf("Failed to load config: %v", err)
	}

	// Set up logging
	logFile, err := os.OpenFile(cfg.LogFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
	if err != nil {
		log.Fatalf("Failed to open log file: %v", err)
	}
	defer logFile.Close()
	log.SetOutput(logFile)

	// Create a new MQTT server
	server := mqtt.MqttServerStart(cfg)

	<-done
	server.Log.Warn("caught signal, stopping...")
	_ = server.Close()
	server.Log.Info("main.go finished")

}