// 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 discovery

import (
	"v.io/v23/discovery"
)

type Uuid []byte

type EncryptionAlgorithm int32
type EncryptionKey []byte

const (
	NoEncryption   = EncryptionAlgorithm(0)
	TestEncryption = EncryptionAlgorithm(1)
	IbeEncryption  = EncryptionAlgorithm(2)
)

type AdStatus byte

const (
	AdReady          = AdStatus(0) // All information is available
	AdNotReady       = AdStatus(1) // Not all information is available for querying against it
	AdPartiallyReady = AdStatus(2) // All information except attachments is available
)

// AdInfo represents advertisement information for discovery.
type AdInfo struct {
	Ad discovery.Advertisement

	// Type of encryption applied to the advertisement so that it can
	// only be decoded by authorized principals.
	EncryptionAlgorithm EncryptionAlgorithm
	// If the advertisement is encrypted, then the data required to
	// decrypt it. The format of this data is a function of the algorithm.
	EncryptionKeys []EncryptionKey

	// Hash of the current advertisement. This does not include the fields below.
	Hash AdHash

	// Unix time in nanoseconds at which the advertisement was created.
	TimestampNs int64

	// The addresses (vanadium object names) that the advertisement directory service
	// is served on. See directory.vdl.
	DirAddrs []string

	// Status of the current advertisement. Valid for scanned advertisements.
	Status AdStatus

	// TODO(jhahn): Add proximity.
	// TODO(jhahn): Use proximity for Lost.
	Lost bool
}

// An AdHash is a hash of an advertisement.
type AdHash [8]byte