/*
 * Copyright 2014-2022 Aerospike, Inc.
 *
 * Portions may be licensed to Aerospike, Inc. under one or more contributor
 * license agreements.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package aerospike

import (
	"strconv"

	dynconfig "github.com/aerospike/aerospike-client-go/v8/config"
)

// ReadModeSC is the read policy in SC (strong consistency) mode namespaces.
// Determines SC read consistency options.
type ReadModeSC int

const (
	// ReadModeSCSession ensures this client will only see an increasing sequence of record versions.
	// Client only reads from master. This is the default.
	ReadModeSCSession ReadModeSC = iota

	// ReadModeSCLinearize ensures all clients will only see an increasing sequence of record versions.
	// Client only reads from master.
	ReadModeSCLinearize

	// ReadModeSCAllowReplica indicates that the client may read from master or any full (non-migrating) replica.
	// Increasing sequence of record versions is not guaranteed.
	ReadModeSCAllowReplica

	// ReadModeSCAllowUnavailable indicates that the client may read from master or any full (non-migrating) replica or from unavailable
	// partitions. Increasing sequence of record versions is not guaranteed.
	ReadModeSCAllowUnavailable
)

func mapReadModeSCToReadModeSC(readModeSC dynconfig.ReadModeSc) ReadModeSC {
	switch readModeSC {
	case dynconfig.SESSION:
		return ReadModeSCSession
	case dynconfig.LINEARIZE:
		return ReadModeSCLinearize
	case dynconfig.ALLOW_REPLICA:
		return ReadModeSCAllowReplica
	case dynconfig.ALLOW_UNAVAILABLE:
		return ReadModeSCAllowUnavailable
	default:
		panic("unknown ReadModeC value: " + strconv.Itoa(int(readModeSC)))
	}
}
