package main

import (
	"github.com/xujiajun/nutsdb"
)

func DbClean() error {
	err := db.Update(
		func(tx *nutsdb.Tx) error {
			return db.Merge()
		})
	return err
}

func DbSave(bucket, key string, val []byte) error {
	err := db.Update(
		func(tx *nutsdb.Tx) error {
			keyBytes := []byte(key)
			return tx.Put(bucket, keyBytes, val, 0)
		})
	return err
}

func DbRead(bucket, key string) ([]byte, error) {
	var val []byte
	err := db.View(
		func(tx *nutsdb.Tx) error {
			key := []byte("name1")
			e, err := tx.Get(bucket, key)
			if err != nil {
				return err
			}
			val = make([]byte, e.Size())
			copy(val, e.Value)
			return err
		})
	return val, err
}

func DbDelete(bucket, key string, val []byte) error {
	err := db.Update(
		func(tx *nutsdb.Tx) error {
			keyBytes := []byte(key)
			return tx.Delete(bucket, keyBytes)
		})
	return err
}