backendtypes

var (
	// ErrInvalidPageToken indicates the page token is invalid.
	// Raised by the adapter layer to let the server layer know that the
	// page token did not meet the expected encoding in the database layer.
	ErrInvalidPageToken = errors.New("invalid page token")

	// ErrUserMaxSavedSearches indicates the user has reached the maximum
	// number of allowed saved searches.
	ErrUserMaxSavedSearches = errors.New("user has reached the maximum number of allowed saved searches")

	// ErrUserMaxBookmarks indicates the user has reached the maximum
	// number of allowed bookmarks.
	ErrUserMaxBookmarks = errors.New("user has reached the maximum number of allowed bookmarks")

	// ErrUserMaxSubscriptions indicates the user has reached the maximum
	// number of allowed subscriptions.
	ErrUserMaxSubscriptions = errors.New("user has reached the maximum number of allowed subscriptions")

	// ErrUserMaxNotificationChannels indicates the user has reached the maximum
	// number of allowed notification channels.
	ErrUserMaxNotificationChannels = errors.New("user has reached the maximum number of allowed notification channels")

	// ErrUserNotAuthorizedForAction indicates the user is not authorized to execute the requested action.
	ErrUserNotAuthorizedForAction = errors.New("user not authorized to execute action")

	// ErrEntityDoesNotExist indicates the entity does not exist.
	ErrEntityDoesNotExist = errors.New("entity does not exist")

	// ErrJSONMarshal indicates a failure when marshalling data from a generic interface{} for conversion.
	// This typically happens during the data conversion from a database type to a JSON byte slice.
	ErrJSONMarshal = errors.New("failed to marshal data for JSON conversion")

	// ErrJSONUnmarshal indicates a failure when unmarshalling JSON data into a target struct.
	// This suggests a mismatch between the data stored in the database and the expected data contract.
	ErrJSONUnmarshal = errors.New("failed to unmarshal JSON data")

	// ErrEmptyJSONValue is a sentinel error indicating that the JSON value from the database
	// was valid but empty (e.g., an empty array or object). This allows callers to distinguish
	// between a missing value and an explicitly empty one.
	ErrEmptyJSONValue = errors.New("JSON value is empty")

	// ErrSavedSearchMaxDepthExceeded indicates that the saved search expansion exceeded the maximum depth.
	ErrSavedSearchMaxDepthExceeded = errors.New("saved search expansion exceeded maximum depth")

	// ErrSavedSearchCycleDetected indicates a cycle was detected in saved search expansion.
	ErrSavedSearchCycleDetected = errors.New("cycle detected in saved search expansion")

	// ErrSavedSearchNotFound indicates the saved search was not found.
	ErrSavedSearchNotFound = errors.New("saved search not found")

	// ErrHotlistNotFound indicates the hotlist was not found.
	ErrHotlistNotFound = errors.New("hotlist not found")

	// ErrQueryConsistsEntirelyOfSavedSearch indicates the query consists entirely of a saved search.
	ErrQueryConsistsEntirelyOfSavedSearch = errors.New(
		"query cannot consist entirely of a single saved search or hotlist",
	)
)