package main

import (
	"fmt"
	"os/signal"
	"syscall"

	"FRMS/internal/pkg/config"
	"FRMS/internal/pkg/logging"
	"FRMS/internal/pkg/server"
	"FRMS/internal/pkg/websocket"
	"os"

	"github.com/spf13/viper"
)

type coordinator interface {
	Start()
}

func NewCoordinator(config *viper.Viper, ch chan error) coordinator {
	return server.NewCentralCoordinator(config, ch)
}

func NewConfig(filename string) (*viper.Viper, error) {
	return config.LoadConfig(filename)
}

type ws interface {
	Start()
}

func NewWebSocket() ws {
	return websocket.New()
}

func main() {
	// lets get this bread
	gracefulShutdown := make(chan os.Signal, 1)
	signal.Notify(gracefulShutdown, syscall.SIGINT, syscall.SIGTERM)

	// config file
	conf, err := NewConfig("server")
	if err != nil {
		panic(err)
	}

	errCh := make(chan error)

	c := NewCoordinator(conf, errCh)
	go c.Start()
	fmt.Printf("Coordiantor started\n")
	logging.Debug(logging.DStart, "CCO %s started", conf.Get("name"))

	// starting websocket server
	// gated behind env for testing
	if conf.Get("WEBSOCKET") == "start" {
		w := NewWebSocket()
		go w.Start()
		fmt.Printf("Websocket started\n")
		logging.Debug(logging.DStart, "WS websocket started")
	}

	select {
	case err := <-errCh: // allows passing errors up for handling
		panic(err)
	case <-gracefulShutdown:
		// Shutdown via INT
		fmt.Printf("\nExiting...\n")
		logging.Debug(logging.DStop, "CON storing to %s", conf.ConfigFileUsed())
		if err := conf.WriteConfig(); err != nil {
			panic(err)
		}
		logging.Debug(logging.DStop, "CON stored successfully", conf.ConfigFileUsed())
		os.Exit(0)
	}
}