/*
 * 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.repositories;

import org.elasticsearch.common.UUIDs;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.test.AbstractWireSerializingTestCase;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.xcontent.ToXContent;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.XContentParser;
import org.elasticsearch.xcontent.json.JsonXContent;

import java.io.IOException;

/**
 * Tests for the {@link IndexId} class.
 */
public class IndexIdTests extends AbstractWireSerializingTestCase<IndexId> {

    @Override
    protected Writeable.Reader<IndexId> instanceReader() {
        return IndexId::new;
    }

    @Override
    protected IndexId createTestInstance() {
        return new IndexId(randomIdentifier(), UUIDs.randomBase64UUID());
    }

    @Override
    protected IndexId mutateInstance(IndexId instance) {
        return switch (randomInt(1)) {
            case 0 -> new IndexId(randomValueOtherThan(instance.getName(), ESTestCase::randomIdentifier), instance.getId());
            case 1 -> new IndexId(instance.getName(), randomValueOtherThan(instance.getId(), UUIDs::randomBase64UUID));
            default -> throw new RuntimeException("unreachable");
        };
    }

    public void testXContent() throws IOException {
        IndexId indexId = new IndexId(randomAlphaOfLength(8), UUIDs.randomBase64UUID());
        XContentBuilder builder = JsonXContent.contentBuilder();
        indexId.toXContent(builder, ToXContent.EMPTY_PARAMS);
        String name;
        String id;
        try (XContentParser parser = createParser(JsonXContent.jsonXContent, BytesReference.bytes(builder))) {
            assertEquals(XContentParser.Token.START_OBJECT, parser.nextToken());
            name = null;
            id = null;
            while (parser.nextToken() != XContentParser.Token.END_OBJECT) {
                final String currentFieldName = parser.currentName();
                parser.nextToken();
                if (currentFieldName.equals(IndexId.NAME)) {
                    name = parser.text();
                } else if (currentFieldName.equals(IndexId.ID)) {
                    id = parser.text();
                }
            }
        }
        assertNotNull(name);
        assertNotNull(id);
        assertEquals(indexId, new IndexId(name, id));
    }
}