const (

	// MaxMessageJSONSize is the overhead size of Message when it is
	// serialized as JSON assuming that each traffic map is populated.
	MaxMessageJSONSize = len(messageJSON)

	// MaxConnectionCountsJSONSize is the maximum size of a ConnectionCounts
	// when it is serialized as JSON, assuming no superfluous whitespace.
	// It does not include the trailing comma that often appears when
	// this object is nested within an array.
	// It assumes that netip.Addr never has IPv6 zones.
	MaxConnectionCountsJSONSize = len(maxJSONConnCounts)

	// MaxConnectionCountsCBORSize is the maximum size of a ConnectionCounts
	// when it is serialized as CBOR.
	// It assumes that netip.Addr never has IPv6 zones.
	MaxConnectionCountsCBORSize = len(maxCBORConnCounts)
)

type Connection struct {
	Proto ipproto.Proto  `json:"proto,omitzero,omitempty" cbor:"0,keyasint,omitempty"`
	Src   netip.AddrPort `json:"src,omitzero,omitempty"   cbor:"1,keyasint,omitempty"`
	Dst   netip.AddrPort `json:"dst,omitzero,omitempty"   cbor:"2,keyasint,omitempty"`
}

type ConnectionCounts struct {
	Connection
	Counts
}

type Counts struct {
	TxPackets uint64 `json:"txPkts,omitzero,omitempty"  cbor:"12,keyasint,omitempty"`
	TxBytes   uint64 `json:"txBytes,omitzero,omitempty" cbor:"13,keyasint,omitempty"`
	RxPackets uint64 `json:"rxPkts,omitzero,omitempty"  cbor:"14,keyasint,omitempty"`
	RxBytes   uint64 `json:"rxBytes,omitzero,omitempty" cbor:"15,keyasint,omitempty"`
}

type Message struct {
	NodeID tailcfg.StableNodeID `json:"nodeId" cbor:"0,keyasint"` // e.g., "n123456CNTRL"

	Start time.Time `json:"start" cbor:"12,keyasint"` // inclusive
	End   time.Time `json:"end"   cbor:"13,keyasint"` // inclusive

	VirtualTraffic  []ConnectionCounts `json:"virtualTraffic,omitempty"  cbor:"14,keyasint,omitempty"`
	SubnetTraffic   []ConnectionCounts `json:"subnetTraffic,omitempty"   cbor:"15,keyasint,omitempty"`
	ExitTraffic     []ConnectionCounts `json:"exitTraffic,omitempty"     cbor:"16,keyasint,omitempty"`
	PhysicalTraffic []ConnectionCounts `json:"physicalTraffic,omitempty" cbor:"17,keyasint,omitempty"`
}