package app

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

	"git.espin.casa/albert/cml04-printer-robot/internal/logging"
	"git.espin.casa/albert/cml04-printer-robot/internal/service"
	"git.espin.casa/albert/logger"
)

func Run() error {
	// flags
	bindAddr := flag.String("addr", "localhost:3333", "API server address")
	logLevel := flag.String("level", "debug", "log level")
	// parse flags
	flag.Parse()
	// setup logger
	log := logger.New(os.Stdout, *logLevel)
	// create log fields
	logFields := logger.LogFields{
		"app_name":        "cml04-printer-robot",
		"debug_legel":     *logLevel,
		"l2_bind_address": *bindAddr,
	}
	// create main service
	svc := service.NewService(broker)
	// add logging capabilities to main service
	svc = logging.NewLoggingService(svc, log)

	// start banner
	log.Info("cml04 printer robot service started", logFields)
	// wait signal to finish
	signal := WaitSignal()

	log.Info("signal received", logger.LogFields{
		"signal": signal,
	})
	return nil
}

// WaitSignal catching exit signal
func WaitSignal() os.Signal {
	ch := make(chan os.Signal, 2)
	signal.Notify(
		ch,
		syscall.SIGINT,
		syscall.SIGQUIT,
		syscall.SIGTERM,
	)
	for {
		sig := <-ch
		switch sig {
		case syscall.SIGINT, syscall.SIGQUIT, syscall.SIGTERM:
			return sig
		}
	}
}