// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package stream

import (
	"io"
	"v.io/v23/naming"
	"v.io/v23/security"

	"v.io/x/ref/runtime/internal/lib/upcqueue"
)

type XFlow interface {
	Flow

	// DisableEncryption disables encryption for the flow.  All bytes
	// written afterward will be sent in the clear. All calls after the
	// first have no effect.
	DisableEncryption()
}

type XManager interface {
	Listen(protocol, address string, principal security.Principal, blessings security.Blessings, opts ...ListenerOpt) (XListener, naming.Endpoint, error)
	Dial(remote naming.Endpoint, principal security.Principal, opts ...VCOpt) (XFlow, error)
	Shutdown()
	RoutingID() naming.RoutingID
}

type XConn interface {
	io.ReadWriteCloser

	// DisableEncryption disables encryption for the flow.  All bytes
	// written afterward will be sent in the clear. All calls after the
	// first have no effect.
	DisableEncryption()
}

type XListener interface {
	Accept() (XFlow, error)
	Close() error
}

// TODO(mattr): XVC doesn't need to be an interface, and shouldn't be in the
// model file.
type XVC interface {
	Connect(opts ...FlowOpt) (XFlow, error)
	ListenTo(q *upcqueue.T) error
	// Close closes the VC and all flows on it, allowing any pending writes in
	// flows to drain.
	Close(reason error) error
	Closed() chan struct{}
	VCDataCache() VCDataCache
}