package main

import (
	"net"
	"net/http"

	"github.com/alecthomas/kong"
	"github.com/rs/zerolog"
)

type CLI struct {
	File string `arg:"" name:"file" short:"f" help:"Path to CSV redirects file." type:"path"`
	Host string `name:"host" help:"HTTP listen host." default:"${host}"`
	Port string `name:"port" short:"p" help:"HTTP listen port." default:"${port}"`
}

type HttpServer struct {
	CLI *CLI
	Log zerolog.Logger
}

func (srv *HttpServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
	statusCode := 404
	srv.Log.Trace().Int("result", statusCode).Msg(req.URL.Path)
	w.WriteHeader(statusCode)
}

func main() {
	vars := kong.Vars{
		"host": "localhost",
		"port": "4000",
	}

	cli := &CLI{}
	kong.Parse(cli, vars)

	srv := &HttpServer{
		CLI: cli,
		Log: zerolog.New(zerolog.NewConsoleWriter()).With().Timestamp().Logger(),
	}

	addr := net.JoinHostPort(cli.Host, cli.Port)
	errc := make(chan error)
	go func() {
		errc <- http.ListenAndServe(addr, srv)
	}()

	srv.Log.Info().Msgf("Listening at %s", addr)
	err := <-errc
	panic(err)
}