package manager

import (
	"bufio"
	"encoding/json"
	"log"

	"github.com/jacobsa/go-serial/serial"
)

type _manager struct {
	devices      map[string]*_device
	SyncListener EventHandler
	RecvListener EventHandler
}

func (m *_manager) onAdd(iface string) {
	err := ChangePermission(iface)
	if err != nil {
		panic(err)
	}

	// Set up options.
	options := serial.OpenOptions{
		PortName:        iface,
		BaudRate:        9600,
		DataBits:        8,
		StopBits:        1,
		MinimumReadSize: 16,
	}

	// Open the port.
	go func() {
		port, err := serial.Open(options)
		if err != nil {
			log.Fatalf("serial.Open: %v", err)
		}

		reader := bufio.NewReader(port)

		for {
			port.Write([]byte("Introduce\n"))

			b, _, err := reader.ReadLine()
			if err != nil {
				return
			}

			var obj map[string]interface{}
			err = json.Unmarshal(b, &obj)
			if err != nil {
				continue
			}

			uuid, ok := obj["uuid"]
			if ok {
				m.devices[iface] = &_device{
					UUID:      uuid.(string),
					IfaceName: iface,
					Iface:     port,
				}
				break
			}
		}
	}()

}

func (m *_manager) onSync(e Event) {

}

func (m *_manager) onRecv(e Event) {

}