package core

import "errors"

const (
	// DatastorePathDelimiter is a delimiter that should be used for path elements delimiter.
	DatastorePathDelimiter = "/"
	// ServiceNameDatastore is a service name for data storage implementation.
	ServiceNameDatastore = "datastore"
)

var (
	// ErrDatastore indicates that error appeared somewhere in data storage service.
	ErrDatastore = errors.New("datastore")
	// ErrDatastoreAppNotFound appears when requesting data for application which wasn't registered via API or loaded
	// from disk.
	ErrDatastoreAppNotFound = errors.New("application not found")
	// ErrDatastoreServiceIsInvalid appears when data storage implementation isn't conforming to interface.
	ErrDatastoreServiceIsInvalid = errors.New("invalid datastore implementation")
	// ErrDatastoreValueInvalid appears when trying to get value from datastore using incompatible getter (e.g.
	// when trying to get bool with GetString).
	ErrDatastoreValueInvalid = errors.New("requested value is invalid")
	// ErrDatastoreValueNotFound appears when trying to get value with path which isn't known.
	ErrDatastoreValueNotFound = errors.New("requested value not found")
)

// DataStore is an interface for data storage implementations.
type DataStore interface{}