package reach

import (
	"sync"

	"forge.cadoles.com/Pyxis/golang-socketio"
	"github.com/pkg/errors"
)

const (
	// EventProbe  -
	EventProbe = "probe"
)

// Probe -
func (c *Client) Probe() error {

	var wg sync.WaitGroup

	wg.Add(1)

	c.conn.On(EventProbe, func(h *gosocketio.Channel) {
		wg.Done()
		c.conn.On(EventProbe, nil)
	})

	c.logf("sending '%s' event", EventProbe)
	if err := c.conn.Emit(EventProbe, nil); err != nil {
		return errors.Wrapf(err, "error while emitting '%s' event", EventProbe)
	}
	c.logf("'%s' event sent", EventProbe)

	wg.Wait()

	return nil

}