package picoserial

import (
	"fmt"

	"go.bug.st/serial"
	"go.bug.st/serial/enumerator"
)

func FindDevice() (string, error) {
	ports, err := enumerator.GetDetailedPortsList()
	if err != nil {
		return "", fmt.Errorf("enumerating ports: %w", err)
	}
	for _, p := range ports {
		if p.IsUSB {
			return p.Name, nil
		}
	}
	return "", nil
}

func SendByte(portName string, b byte) error {
	port, err := serial.Open(portName, &serial.Mode{BaudRate: 115200})
	if err != nil {
		return fmt.Errorf("opening %s: %w", portName, err)
	}
	defer port.Close()

	_, err = port.Write([]byte{b})
	if err != nil {
		return fmt.Errorf("writing to %s: %w", portName, err)
	}
	return nil
}