package main

import (
	"flag"
	"fmt"
	"os"
	"text/template"

	"gopkg.in/mcuadros/go-syslog.v2"
)

func main() {
	socketFile := flag.String("socket", "/dev/log", "socket file")
	stdoutTpl := flag.String("stdoutTpl", "[{{.timestamp}}] {{.content}}", "stdout line template, variables are: timestamp, content, facility, hostname, priority, severity, tag")

	flag.Parse()

	stdoutTemplate := template.Must(template.New("stdout").Parse(*stdoutTpl + "\n"))

	channel := make(syslog.LogPartsChannel)
	handler := syslog.NewChannelHandler(channel)

	server := syslog.NewServer()
	// server.SetFormat(syslog.RFC5424)
	server.SetFormat(syslog.Automatic)
	server.SetHandler(handler)
	//err := server.ListenUDP("0.0.0.0:514")
	if _, err := os.Stat(*socketFile); err == nil {
		os.Remove(*socketFile)
	}
	err := server.ListenUnixgram(*socketFile)

	if err != nil {
		panic(err)
	}
	err = server.Boot()
	if err != nil {
		panic(err)
	}

	go func(channel syslog.LogPartsChannel) {
		for logParts := range channel {
			stdoutTemplate.Execute(os.Stdout, logParts)
			fmt.Println(logParts)
		}
	}(channel)

	server.Wait()
}