/*
 * 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.action.admin.cluster.snapshots.features;

import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.xcontent.ToXContentObject;
import org.elasticsearch.xcontent.XContentBuilder;

import java.io.IOException;
import java.util.List;
import java.util.Objects;

public class GetSnapshottableFeaturesResponse extends ActionResponse implements ToXContentObject {

    private final List<SnapshottableFeature> snapshottableFeatures;

    public GetSnapshottableFeaturesResponse(List<SnapshottableFeature> features) {
        this.snapshottableFeatures = List.copyOf(features);
    }

    public GetSnapshottableFeaturesResponse(StreamInput in) throws IOException {
        snapshottableFeatures = in.readCollectionAsImmutableList(SnapshottableFeature::new);
    }

    public List<SnapshottableFeature> getSnapshottableFeatures() {
        return snapshottableFeatures;
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        out.writeCollection(snapshottableFeatures);
    }

    @Override
    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
        builder.startObject();
        {
            builder.startArray("features");
            for (SnapshottableFeature feature : snapshottableFeatures) {
                builder.value(feature);
            }
            builder.endArray();
        }
        builder.endObject();
        return builder;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if ((o instanceof GetSnapshottableFeaturesResponse) == false) return false;
        GetSnapshottableFeaturesResponse that = (GetSnapshottableFeaturesResponse) o;
        return snapshottableFeatures.equals(that.snapshottableFeatures);
    }

    @Override
    public int hashCode() {
        return Objects.hash(snapshottableFeatures);
    }

    public static class SnapshottableFeature implements Writeable, ToXContentObject {

        private final String featureName;
        private final String description;

        public SnapshottableFeature(String featureName, String description) {
            this.featureName = featureName;
            this.description = description;
        }

        public SnapshottableFeature(StreamInput in) throws IOException {
            featureName = in.readString();
            description = in.readString();
        }

        public String getFeatureName() {
            return featureName;
        }

        public String getDescription() {
            return description;
        }

        @Override
        public void writeTo(StreamOutput out) throws IOException {
            out.writeString(featureName);
            out.writeString(description);
        }

        @Override
        public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
            builder.startObject();
            builder.field("name", featureName);
            builder.field("description", description);
            builder.endObject();
            return builder;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if ((o instanceof SnapshottableFeature) == false) return false;
            SnapshottableFeature feature = (SnapshottableFeature) o;
            return Objects.equals(getFeatureName(), feature.getFeatureName());
        }

        @Override
        public int hashCode() {
            return Objects.hash(getFeatureName());
        }
    }
}