package congestion

import (
	"context"
	"fmt"
	"time"
)

type None struct{}

func NewNone() None {
	return None{}
}

func (c None) String() string {
	return fmt.Sprintf("{None}")
}

func (c None) ReceivedPacket(uint32, uint32, uint32) {}
func (c None) NextNack() uint32                      { return 0 }
func (c None) NextAck() uint32                       { return 0 }
func (c None) AwaitEarlyUpdate(ctx context.Context, _ time.Duration) (uint32, error) {
	<-ctx.Done()
	return 0, ctx.Err()
}
func (c None) Sequence(context.Context) (uint32, error) { return 0, nil }