package mdbc

import "go.mongodb.org/mongo-driver/mongo/readpref"

type ReadPref uint8

const (
	PrimaryMode ReadPref = iota + 1
	PrimaryPreferredMode
	SecondaryMode
	SecondaryPreferredMode
	NearestMode
)

func readPref(pref ReadPref) *readpref.ReadPref {
	switch pref {
	case PrimaryMode:
		return readpref.Primary()
	case PrimaryPreferredMode:
		return readpref.PrimaryPreferred()
	case SecondaryMode:
		return readpref.Secondary()
	case SecondaryPreferredMode:
		return readpref.SecondaryPreferred()
	case NearestMode:
		return readpref.Nearest()
	default:
		return readpref.Primary()
	}
}