driver

type AlarmConfig struct {
	Name                    string
	Namespace               string
	MetricName              string
	Dimensions              map[string]string
	ComparisonOperator      string // "GreaterThanThreshold", "LessThanThreshold", etc.
	Threshold               float64
	Period                  int
	EvaluationPeriods       int
	Stat                    string
	AlarmActions            []string // channel IDs to notify on ALARM
	OKActions               []string // channel IDs to notify on OK
	InsufficientDataActions []string // channel IDs to notify on INSUFFICIENT_DATA
}

type AlarmHistoryEntry struct {
	AlarmName string
	Timestamp time.Time
	OldState  string
	NewState  string
	Reason    string
}

type AlarmInfo struct {
	Name               string
	Namespace          string
	MetricName         string
	State              string // "OK", "ALARM", "INSUFFICIENT_DATA"
	ComparisonOperator string
	Threshold          float64
}

type GetMetricInput struct {
	Namespace  string
	MetricName string
	Dimensions map[string]string
	StartTime  time.Time
	EndTime    time.Time
	Period     int    // seconds
	Stat       string // "Average", "Sum", "Minimum", "Maximum", "SampleCount"
}

type MetricDataResult struct {
	Timestamps []time.Time
	Values     []float64
}

type MetricDatum struct {
	Namespace  string
	MetricName string
	Value      float64
	Unit       string
	Dimensions map[string]string
	Timestamp  time.Time
}

type Monitoring interface {
	PutMetricData(ctx context.Context, data []MetricDatum) error
	GetMetricData(ctx context.Context, input GetMetricInput) (*MetricDataResult, error)
	ListMetrics(ctx context.Context, namespace string) ([]string, error)

	CreateAlarm(ctx context.Context, config AlarmConfig) error
	DeleteAlarm(ctx context.Context, name string) error
	DescribeAlarms(ctx context.Context, names []string) ([]AlarmInfo, error)
	SetAlarmState(ctx context.Context, name, state, reason string) error

	// Notification Channels
	CreateNotificationChannel(ctx context.Context, config NotificationChannelConfig) (*NotificationChannelInfo, error)
	DeleteNotificationChannel(ctx context.Context, id string) error
	GetNotificationChannel(ctx context.Context, id string) (*NotificationChannelInfo, error)
	ListNotificationChannels(ctx context.Context) ([]NotificationChannelInfo, error)

	// Alarm History
	GetAlarmHistory(ctx context.Context, alarmName string, limit int) ([]AlarmHistoryEntry, error)
}

type NotificationChannelConfig struct {
	Name     string
	Type     string // "email", "webhook", "queue", "function"
	Endpoint string
	Tags     map[string]string
}

type NotificationChannelInfo struct {
	ID       string
	Name     string
	Type     string
	Endpoint string
	Tags     map[string]string
}