const (
	// LocalScope indicates to store the KV object in local datastore such as boltdb
	LocalScope = "local"
	// GlobalScope indicates to store the KV object in global datastore such as consul/etcd/zookeeper
	GlobalScope = "global"
)

const (
	// NetworkKeyPrefix is the prefix for network key in the kv store
	NetworkKeyPrefix = "network"
	// EndpointKeyPrefix is the prefix for endpoint key in the kv store
	EndpointKeyPrefix = "endpoint"
)

var (
	ErrKeyModified = store.ErrKeyModified
	ErrKeyNotFound = store.ErrKeyNotFound
)

var (
	// ErrNotImplmented exported
	ErrNotImplmented = errors.New("Functionality not implemented")
)

type DataStore interface {
	// GetObject gets data from datastore and unmarshals to the specified object
	GetObject(key string, o KVObject) error
	// PutObject adds a new Record based on an object into the datastore
	PutObject(kvObject KVObject) error
	// PutObjectAtomic provides an atomic add and update operation for a Record
	PutObjectAtomic(kvObject KVObject) error
	// DeleteObject deletes a record
	DeleteObject(kvObject KVObject) error
	// DeleteObjectAtomic performs an atomic delete operation
	DeleteObjectAtomic(kvObject KVObject) error
	// DeleteTree deletes a record
	DeleteTree(kvObject KVObject) error
	// Watchable returns whether the store is watchable are not
	Watchable() bool
	// Watch for changes on a KVObject
	Watch(kvObject KVObject, stopCh <-chan struct{}) (<-chan KVObject, error)
	// RestartWatch retriggers stopped Watches
	RestartWatch()
	// Active returns if the store is active
	Active() bool
	// List returns of a list of KVObjects belonging to the parent
	// key. The caller must pass a KVObject of the same type as
	// the objects that need to be listed
	List(string, KVObject) ([]KVObject, error)
	// Scope returns the scope of the store
	Scope() string
	// KVStore returns access to the KV Store
	KVStore() store.Store
	// Close closes the data store
	Close()
}

type KVConstructor interface {
	// New returns a new object which is created based on the
	// source object
	New() KVObject
	// CopyTo deep copies the contents of the implementing object
	// to the passed destination object
	CopyTo(KVObject) error
}

type KVObject interface {
	// Key method lets an object to provide the Key to be used in KV Store
	Key() []string
	// KeyPrefix method lets an object to return immediate parent key that can be used for tree walk
	KeyPrefix() []string
	// Value method lets an object to marshal its content to be stored in the KV store
	Value() []byte
	// SetValue is used by the datastore to set the object's value when loaded from the data store.
	SetValue([]byte) error
	// Index method returns the latest DB Index as seen by the object
	Index() uint64
	// SetIndex method allows the datastore to store the latest DB Index into the object
	SetIndex(uint64)
	// True if the object exists in the datastore, false if it hasn't been stored yet.
	// When SetIndex() is called, the object has been stored.
	Exists() bool
	// DataScope indicates the storage scope of the KV object
	DataScope() string
	// Skip provides a way for a KV Object to avoid persisting it in the KV Store
	Skip() bool
}

type MockData struct {
	Data  []byte
	Index uint64
}

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

type ScopeCfg struct {
	Client ScopeClientCfg
}

type ScopeClientCfg struct {
	Provider string
	Address  string
	Config   *store.Config
}