/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.health.node;

import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.health.HealthStatus;

import java.io.IOException;

/**
 * The health status of the disk space of this node along with the cause.
 */
public record DiskHealthInfo(HealthStatus healthStatus, @Nullable Cause cause) implements Writeable {

    public DiskHealthInfo(HealthStatus healthStatus) {
        this(healthStatus, null);
    }

    public DiskHealthInfo(StreamInput in) throws IOException {
        this(in.readEnum(HealthStatus.class), in.readOptionalEnum(Cause.class));
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        healthStatus.writeTo(out);
        out.writeOptionalEnum(cause);
    }

    public enum Cause {
        NODE_OVER_HIGH_THRESHOLD,
        NODE_OVER_THE_FLOOD_STAGE_THRESHOLD,
        FROZEN_NODE_OVER_FLOOD_STAGE_THRESHOLD,
        NODE_HAS_NO_DISK_STATS
    }
}