package link

import (
	"context"
	"fmt"
	"time"

	"github.com/nats-io/nats.go"
)

// TestDial dials a second connection to the bus as login with password, on the pinned certificate and the node's one inbox,
// and answers whether it authenticated (novox/hq ADR 0583 §3): the connection is closed at once, nothing is subscribed or said.
func TestDial(ctx context.Context, m Membership, login, password string, timeout time.Duration) error {
	config, err := PinnedConfig(m.Fingerprint)
	if err != nil {
		return err
	}
	conn, err := nats.Connect(natsURL(m.Broker),
		nats.Secure(config),
		nats.UserInfo(login, password),
		nats.CustomInboxPrefix("_INBOX.node."+m.Node),
		nats.Name("mesh-host/"+m.Node+"/test-dial"),
		nats.Timeout(timeout),
		nats.NoReconnect())
	if err != nil {
		return fmt.Errorf("cannot dial as %s: %w", login, err)
	}
	defer conn.Close()
	flush, cancel := context.WithTimeout(ctx, timeout)
	defer cancel()
	if err := conn.FlushWithContext(flush); err != nil {
		return fmt.Errorf("the bus did not answer as %s: %w", login, err)
	}
	return nil
}