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/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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.
 */
/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.client.indices;

import org.opensearch.core.xcontent.XContentParser;

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

public class GetIndexTemplatesResponse {

    @Override
    public String toString() {
        List thisList = new ArrayList<>(this.indexTemplates);
        thisList.sort(Comparator.comparing(IndexTemplateMetadata::name));
        return "GetIndexTemplatesResponse [indexTemplates=" + thisList + "]";
    }

    private final List indexTemplates;

    GetIndexTemplatesResponse() {
        indexTemplates = new ArrayList<>();
    }

    GetIndexTemplatesResponse(List indexTemplates) {
        this.indexTemplates = indexTemplates;
    }

    public List getIndexTemplates() {
        return indexTemplates;
    }

    public static GetIndexTemplatesResponse fromXContent(XContentParser parser) throws IOException {
        final List templates = new ArrayList<>();
        for (XContentParser.Token token = parser.nextToken(); token != XContentParser.Token.END_OBJECT; token = parser.nextToken()) {
            if (token == XContentParser.Token.FIELD_NAME) {
                final IndexTemplateMetadata templateMetadata = IndexTemplateMetadata.Builder.fromXContent(parser, parser.currentName());
                templates.add(templateMetadata);
            }
        }
        return new GetIndexTemplatesResponse(templates);
    }

    @Override
    public int hashCode() {
        List sortedList = new ArrayList<>(this.indexTemplates);
        sortedList.sort(Comparator.comparing(IndexTemplateMetadata::name));
        return Objects.hash(sortedList);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null) return false;
        if (getClass() != obj.getClass()) return false;
        // To compare results we need to make sure the templates are listed in the same order
        GetIndexTemplatesResponse other = (GetIndexTemplatesResponse) obj;
        List thisList = new ArrayList<>(this.indexTemplates);
        List otherList = new ArrayList<>(other.indexTemplates);
        thisList.sort(Comparator.comparing(IndexTemplateMetadata::name));
        otherList.sort(Comparator.comparing(IndexTemplateMetadata::name));
        return Objects.equals(thisList, otherList);
    }

}