package main

import (
	"embed"
	"io/fs"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"

	"imuslab.com/remdeskvm/remdeskd/mod/remdeshid"
)

const development = true

var (
	remdesHIDController *remdeshid.Controller
)

/* Web Server Static Files */
//go:embed www
var embeddedFiles embed.FS
var webfs http.FileSystem

func init() {
	// Initiate the web server static files
	if development {
		webfs = http.Dir("./www")
	} else {
		// Embed the ./www folder and trim the prefix
		subFS, err := fs.Sub(embeddedFiles, "www")
		if err != nil {
			log.Fatal(err)
		}
		webfs = http.FS(subFS)
	}

	// Initiate the HID controller
	remdesHIDController = remdeshid.NewHIDController(&remdeshid.Config{
		PortName: "COM4",
		BaudRate: 115200,
	})

}

func main() {
	//Start the HID controller
	err := remdesHIDController.Connect()
	if err != nil {
		log.Fatal(err)
	}

	// Handle program exit to close the HID controller
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
	go func() {
		<-c
		log.Println("Shutting down...")
		remdesHIDController.Close()
		os.Exit(0)
	}()

	// Start the web server
	http.HandleFunc("/hid", remdesHIDController.HIDWebSocketHandler)
	http.Handle("/", http.FileServer(webfs))
	addr := ":8080"
	log.Printf("Serving on http://localhost%s\n", addr)
	log.Fatal(http.ListenAndServe(addr, nil))

}