ch

type ActiveWindow struct {
	WindowStart         time.Time
	WindowEnd           time.Time
	SignalCount         uint64
	DistinctSignalCount uint64
}

type AggSignal struct {
	// SignalType describes the type of values in the aggregation:
	// float, string, or approximate location.
	SignalType FieldType
	// SignalIndex is an identifier for the aggregation within its
	// SignalType.
	//
	// For float and string aggregations this is simply an index
	// into the corresponding argument array.
	//
	// For approximate location (SignalType = AppLocType = 3), we
	// imagine expanding each element of the slice
	// model.AllFloatAggregation into two: first the latitude and then
	// the longitude. So, for example, SignalType = 3 and
	// SignalIndex = 4 means we want approximate latitude (4 % 2 = 0)
	// for the index 2 (4 / 2 = 2) float aggregation.
	//
	// We could get away with a single number, since we know how many
	// arguments of each type there are, but it appears to us that this
	// would make adding new types riskier.
	SignalIndex uint16
	// Timestamp is the timestamp for the bucket, the leftmost point.
	Timestamp time.Time
	// ValueNumber is the value for this row if it is of float or
	// approximate location type.
	ValueNumber float64
	// ValueNumber is the value for this row if it is of float or
	// approximate location type.
	ValueString   string
	ValueLocation vss.Location
}

type AliasHandleMapper struct {
	// contains filtered or unexported fields
}

type CUSUMWindow struct {
	WindowStart         time.Time
	WindowEnd           time.Time
	SignalCount         uint64
	DistinctSignalCount uint64
	CUSUMStat           float64 // Cumulative sum statistic
	IsActive            bool    // Whether CUSUM exceeded threshold
}

type ChangePointDetector struct {
	// contains filtered or unexported fields
}

type FieldType uint8

type FrequencyDetector struct {
	// contains filtered or unexported fields
}

type IgnitionDetector struct {
	// contains filtered or unexported fields
}

type Segment struct {
	TokenID            uint32
	StartTime          time.Time
	EndTime            *time.Time
	DurationSeconds    int32
	IsOngoing          bool
	StartedBeforeRange bool
}

type SegmentDetector interface {
	// DetectSegments identifies vehicle usage segments using mechanism-specific logic
	DetectSegments(
		ctx context.Context,
		tokenID uint32,
		from, to time.Time,
		config *model.SegmentConfig,
	) ([]*Segment, error)

	// GetMechanismName returns the name of this detection mechanism
	GetMechanismName() string
}

type Service struct {
	// contains filtered or unexported fields
}

type StateChange struct {
	Timestamp time.Time
	State     float64
	PrevState float64
}