var (
	ErrBatchAlreadySent               = errors.New("clickhouse: batch has already been sent")
	ErrAcquireConnTimeout             = errors.New("clickhouse: acquire conn timeout. you can increase the number of max open conn or the dial timeout")
	ErrUnsupportedServerRevision      = errors.New("clickhouse: unsupported server revision")
	ErrBindMixedNamedAndNumericParams = errors.New("clickhouse [bind]: mixed named and numeric parameters")
)

var CompressionLZ4 compress.Method = compress.LZ4

type Auth struct {
	Database string
	Username string
	Password string
}

type Compression struct {
	Method compress.Method
}

type Conn = driver.Conn

type ConnOpenStrategy uint8

const (
	ConnOpenInOrder ConnOpenStrategy = iota
	ConnOpenRoundRobin
)

type Exception = proto.Exception

type Log struct {
	Time      time.Time
	TimeMicro uint32
	Hostname  string
	QueryID   string
	ThreadID  uint64
	Priority  int8
	Source    string
	Text      string
}

type OpError struct {
	Op         string
	ColumnName string
	Err        error
}

type Options struct {
	TLS              *tls.Config
	Addr             []string
	Auth             Auth
	DialContext      func(ctx context.Context, addr string) (net.Conn, error)
	Debug            bool
	Settings         Settings
	Compression      *Compression
	DialTimeout      time.Duration // default 1 second
	MaxOpenConns     int           // default MaxIdleConns + 5
	MaxIdleConns     int           // default 5
	ConnMaxLifetime  time.Duration // default 1 hour
	ConnOpenStrategy ConnOpenStrategy
}

type ProfileEvent struct {
	Hostname    string
	CurrentTime time.Time
	ThreadID    uint64
	Type        string
	Name        string
	Value       int64
}

type ProfileInfo = proto.ProfileInfo

type Progress = proto.Progress

type QueryOption func(*QueryOptions) error

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

type ServerVersion = proto.ServerHandshake

type Settings map[string]interface{}