package writecache

import (
	"io/fs"
	"os"
	"path/filepath"
	"time"

	"go.etcd.io/bbolt"
)

// OpenDB opens BoltDB instance for write-cache. Opens in read-only mode if ro is true.
func OpenDB(p string, ro bool, openFile func(string, int, fs.FileMode) (*os.File, error), pageSize int) (*bbolt.DB, error) {
	return bbolt.Open(filepath.Join(p, dbName), os.ModePerm, &bbolt.Options{
		NoFreelistSync: true,
		ReadOnly:       ro,
		Timeout:        100 * time.Millisecond,
		OpenFile:       openFile,
		PageSize:       pageSize,
	})
}