type EventClient interface {
	// Events gets a list of all events
	Events(ctx context.Context) ([]models.Event, error)
	// Event gets an event by its id
	Event(ctx context.Context, id string) (models.Event, error)
	// EventCount returns the total count of events
	EventCount(ctx context.Context) (int, error)
	// EventCountForDevice returns the total event count for the specified device
	EventCountForDevice(ctx context.Context, deviceId string) (int, error)
	// EventsForDevice returns events up to a specified number that were generated by a given device
	EventsForDevice(ctx context.Context, deviceID string, limit int) ([]models.Event, error)
	// EventsForInterval returns events generated within a specific time period
	EventsForInterval(ctx context.Context, start int, end int, limit int) ([]models.Event, error)
	// EventsForDeviceAndValueDescriptor returns events for the specified device and value descriptor
	EventsForDeviceAndValueDescriptor(ctx context.Context, deviceId string, vd string, limit int) ([]models.Event, error)
	// Add will post a new event
	Add(ctx context.Context, event *models.Event) (string, error)
	// AddBytes posts a new event using an array of bytes, supporting encoding of the event by the caller.
	AddBytes(ctx context.Context, event []byte) (string, error)
	// DeleteForDevice will delete events by the specified device name
	DeleteForDevice(ctx context.Context, deviceID string) error
	// DeleteOld deletes events according to their age
	DeleteOld(ctx context.Context, age int) error
	// Delete will delete an event by its id
	Delete(ctx context.Context, id string) error
	// MarkPushed designates an event as having been successfully exported
	MarkPushed(ctx context.Context, id string) error
	// MarkPushedByChecksum designates an event as having been successfully exported using a checksum for the respective event.
	MarkPushedByChecksum(ctx context.Context, checksum string) error
	// MarshalEvent will perform JSON or CBOR encoding of the supplied Event. If one or more Readings on the Event
	// has a populated BinaryValue, the marshaling will be CBOR. Default is JSON.
	MarshalEvent(e models.Event) ([]byte, error)
}

type ReadingClient interface {
	// Readings returns a list of all readings
	Readings(ctx context.Context) ([]models.Reading, error)
	// ReadingCount returns a count of the total readings
	ReadingCount(ctx context.Context) (int, error)
	// Reading returns a reading by its id
	Reading(ctx context.Context, id string) (models.Reading, error)
	// ReadingsForDevice returns readings up to a specified limit for a given device
	ReadingsForDevice(ctx context.Context, deviceId string, limit int) ([]models.Reading, error)
	// ReadingsForNameAndDevice returns readings up to a specified limit for a given device and value descriptor name
	ReadingsForNameAndDevice(ctx context.Context, name string, deviceId string, limit int) ([]models.Reading, error)
	// ReadingsForName returns readings up to a specified limit for a given value descriptor name
	ReadingsForName(ctx context.Context, name string, limit int) ([]models.Reading, error)
	// ReadingsForUOMLabel returns readings up to a specified limit for a given UOM label
	ReadingsForUOMLabel(ctx context.Context, uomLabel string, limit int) ([]models.Reading, error)
	// ReadingsForLabel returns readings up to a specified limit for a given label
	ReadingsForLabel(ctx context.Context, label string, limit int) ([]models.Reading, error)
	// ReadingsForType returns readings up to a specified limit of a given type
	ReadingsForType(ctx context.Context, readingType string, limit int) ([]models.Reading, error)
	// ReadingsForInterval returns readings up to a specified limit generated within a specific time period
	ReadingsForInterval(ctx context.Context, start int, end int, limit int) ([]models.Reading, error)
	// Add a new reading
	Add(ctx context.Context, reading *models.Reading) (string, error)
	// Delete eliminates a reading by its id
	Delete(ctx context.Context, id string) error
}

type ValueDescriptorClient interface {
	// ValueDescriptors returns a list of all value descriptors
	ValueDescriptors(ctx context.Context) ([]models.ValueDescriptor, error)
	// ValueDescriptor returns the value descriptor for the specified id
	ValueDescriptor(ctx context.Context, id string) (models.ValueDescriptor, error)
	// ValueDescriptorForName returns the value descriptor for the specified name
	ValueDescriptorForName(ctx context.Context, name string) (models.ValueDescriptor, error)
	// ValueDescriptorsByLabel returns the value descriptors for the specified label
	ValueDescriptorsByLabel(ctx context.Context, label string) ([]models.ValueDescriptor, error)
	// ValueDescriptorsForDevice returns the value descriptors associated with readings from the specified device (by id)
	ValueDescriptorsForDevice(ctx context.Context, deviceId string) ([]models.ValueDescriptor, error)
	// ValueDescriptorsForDeviceByName returns the value descriptors associated with readings from the specified device (by name)
	ValueDescriptorsForDeviceByName(ctx context.Context, deviceName string) ([]models.ValueDescriptor, error)
	// ValueDescriptorsByUomLabel returns the value descriptors for the specified uomLabel
	ValueDescriptorsByUomLabel(ctx context.Context, uomLabel string) ([]models.ValueDescriptor, error)
	// ValueDescriptorsUsage return a map describing which ValueDescriptors are currently in use. The key is the
	// ValueDescriptor name and the value is a bool specifying if the ValueDescriptor is in use.
	ValueDescriptorsUsage(ctx context.Context, names []string) (map[string]bool, error)
	// Adds the specified value descriptor
	Add(ctx context.Context, vdr *models.ValueDescriptor) (string, error)
	// Updates the specified value descriptor
	Update(ctx context.Context, vdr *models.ValueDescriptor) error
	// Delete eliminates a value descriptor (specified by id)
	Delete(ctx context.Context, id string) error
	// Delete eliminates a value descriptor (specified by name)
	DeleteByName(ctx context.Context, name string) error
}