tkv

type Config struct {
	Logger         *slog.Logger
	BadgerLogLevel slog.Level
	Directory      string
	AppCtx         context.Context
}

type ErrCASFailed struct {
	Key string
}

type ErrDataCorruption struct {
	Key    string
	Reason string
}

type ErrInternal struct {
	Err error
}

type ErrInvalidState struct {
	Key    string
	Reason string
}

type ErrKeyExists struct {
	Key string
}

type ErrKeyNotFound struct {
	Key string
}

type TKV interface {
	TKVDataHandler
	TKVCacheHandler
	TKVBatchHandler

	Close() error

	GetDataDB() *badger.DB
	GetCache() *badger.DB
}

type TKVBatchEntry struct {
	Key   string
	Value string
}

type TKVBatchHandler interface {
	BatchSet(entries []TKVBatchEntry) error
	BatchDelete(keys []string) error
}

type TKVCacheHandler interface {
	CacheGet(key string) (string, error)
	CacheSet(key string, value string) error
	CacheDelete(key string) error

	CacheSetNX(key string, value string) error
	CacheCompareAndSwap(key string, oldValue, newValue string) error
	CacheIterate(prefix string, offset int, limit int, trimPrefix string) ([]string, error)
}

type TKVDataHandler interface {
	Get(key string) (string, error)
	Iterate(prefix string, offset int, limit int, trimPrefix string) ([]string, error)
	Set(key string, value string) error
	Delete(key string) error
	SetNX(key string, value string) error
	CompareAndSwap(key string, oldValue, newValue string) error

	BumpInteger(key string, delta int64) error
}