package logging

import "github.com/lucas-clemente/quic-go/internal/protocol"

// PacketType is the packet type of a QUIC packet
type PacketType = protocol.PacketType

const (
	// PacketTypeInitial is the packet type of an Initial packet
	PacketTypeInitial PacketType = iota
	// PacketTypeHandshake is the packet type of a Handshake packet
	PacketTypeHandshake
	// PacketTypeRetry is the packet type of a Retry packet
	PacketTypeRetry
	// PacketType0RTT is the packet type of a 0-RTT packet
	PacketType0RTT
	// PacketTypeVersionNegotiation is the packet type of a Version Negotiation packet
	PacketTypeVersionNegotiation
	// PacketType1RTT is a 1-RTT packet
	PacketType1RTT
	// PacketTypeStatelessReset is a stateless reset
	PacketTypeStatelessReset
	// PacketTypeNotDetermined is the packet type when it could not be determined
	PacketTypeNotDetermined
)

type PacketLossReason uint8

const (
	// PacketLossReorderingThreshold: when a packet is deemed lost due to reordering threshold
	PacketLossReorderingThreshold PacketLossReason = iota
	// PacketLossTimeThreshold: when a packet is deemed lost due to time threshold
	PacketLossTimeThreshold
)

type PacketDropReason uint8

const (
	// PacketDropKeyUnavailable is used when a packet is dropped because keys are unavailable
	PacketDropKeyUnavailable PacketDropReason = iota
	// PacketDropUnknownConnectionID is used when a packet is dropped because the connection ID is unknown
	PacketDropUnknownConnectionID
	// PacketDropHeaderParseError is used when a packet is dropped because header parsing failed
	PacketDropHeaderParseError
	// PacketDropPayloadDecryptError is used when a packet is dropped because decrypting the payload failed
	PacketDropPayloadDecryptError
	// PacketDropProtocolViolation is used when a packet is dropped due to a protocol violation
	PacketDropProtocolViolation
	// PacketDropDOSPrevention is used when a packet is dropped to mitigate a DoS attack
	PacketDropDOSPrevention
	// PacketDropUnsupportedVersion is used when a packet is dropped because the version is not supported
	PacketDropUnsupportedVersion
	// PacketDropUnexpectedPacket is used when an unexpected packet is received
	PacketDropUnexpectedPacket
	// PacketDropUnexpectedSourceConnectionID is used when a packet with an unexpected source connection ID is received
	PacketDropUnexpectedSourceConnectionID
	// PacketDropUnexpectedVersion is used when a packet with an unexpected version is received
	PacketDropUnexpectedVersion
	// PacketDropDuplicate is used when a duplicate packet is received
	PacketDropDuplicate
)

// TimerType is the type of the loss detection timer
type TimerType uint8

const (
	// TimerTypeACK is the timer type for the early retransmit timer
	TimerTypeACK TimerType = iota
	// TimerTypePTO is the timer type for the PTO retransmit timer
	TimerTypePTO
)

// TimeoutReason is the reason why a session is closed
type TimeoutReason uint8

const (
	// TimeoutReasonHandshake is used when the session is closed due to a handshake timeout
	// This reason is not defined in the qlog draft, but very useful for debugging.
	TimeoutReasonHandshake TimeoutReason = iota
	// TimeoutReasonIdle is used when the session is closed due to an idle timeout
	// This reason is not defined in the qlog draft, but very useful for debugging.
	TimeoutReasonIdle
)

type CongestionState uint8

const (
	// CongestionStateSlowStart is the slow start phase of Reno / Cubic
	CongestionStateSlowStart CongestionState = iota
	// CongestionStateCongestionAvoidance is the slow start phase of Reno / Cubic
	CongestionStateCongestionAvoidance
	// CongestionStateCongestionAvoidance is the recovery phase of Reno / Cubic
	CongestionStateRecovery
	// CongestionStateApplicationLimited means that the congestion controller is application limited
	CongestionStateApplicationLimited
)