/*
 * 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.
 */

package org.elasticsearch.index.mapper.source;

import org.apache.lucene.util.BytesRef;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.compress.CompressedXContent;
import org.elasticsearch.common.compress.CompressorFactory;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.mapper.DocumentMapper;
import org.elasticsearch.index.mapper.ParsedDocument;
import org.elasticsearch.test.ESSingleNodeTestCase;
import org.junit.Test;

import static org.hamcrest.Matchers.equalTo;

/**
 *
 */
public class CompressSourceMappingTests extends ESSingleNodeTestCase {
    Settings settings = Settings.builder().put(IndexMetaData.SETTING_VERSION_CREATED, Version.V_1_4_2.id).build();

    @Test
    public void testCompressDisabled() throws Exception {
        String mapping = XContentFactory.jsonBuilder().startObject().startObject("type")
                .startObject("_source").field("enabled",true).field("compress", false).endObject()
                .endObject().endObject().string();

        DocumentMapper documentMapper = createIndex("test", settings).mapperService().documentMapperParser().parse("type", new CompressedXContent(mapping));

        ParsedDocument doc = documentMapper.parse("test", "type", "1", XContentFactory.jsonBuilder().startObject()
                .field("field1", "value1")
                .field("field2", "value2")
                .endObject().bytes());
        BytesRef bytes = doc.rootDoc().getBinaryValue("_source");
        assertThat(CompressorFactory.isCompressed(new BytesArray(bytes)), equalTo(false));
    }

    @Test
    public void testCompressEnabled() throws Exception {
        String mapping = XContentFactory.jsonBuilder().startObject().startObject("type")
                .startObject("_source").field("enabled",true).field("compress", true).endObject()
                .endObject().endObject().string();

        DocumentMapper documentMapper = createIndex("test", settings).mapperService().documentMapperParser().parse("type", new CompressedXContent(mapping));

        ParsedDocument doc = documentMapper.parse("test", "type", "1", XContentFactory.jsonBuilder().startObject()
                .field("field1", "value1")
                .field("field2", "value2")
                .endObject().bytes());

        BytesRef bytes = doc.rootDoc().getBinaryValue("_source");
        assertThat(CompressorFactory.isCompressed(new BytesArray(bytes)), equalTo(true));
    }

    @Test
    public void testCompressThreshold() throws Exception {
        String mapping = XContentFactory.jsonBuilder().startObject().startObject("type")
                .startObject("_source").field("enabled",true).field("compress_threshold", "200b").endObject()
                .endObject().endObject().string();

        DocumentMapper documentMapper = createIndex("test", settings).mapperService().documentMapperParser().parse("type", new CompressedXContent(mapping));

        ParsedDocument doc = documentMapper.parse("test", "type", "1", XContentFactory.jsonBuilder().startObject()
                .field("field1", "value1")
                .endObject().bytes());

        BytesRef bytes = doc.rootDoc().getBinaryValue("_source");
        assertThat(CompressorFactory.isCompressed(new BytesArray(bytes)), equalTo(false));

        doc = documentMapper.parse("test", "type", "1", XContentFactory.jsonBuilder().startObject()
                .field("field1", "value1")
                .field("field2", "value2 xxxxxxxxxxxxxx yyyyyyyyyyyyyyyyyyy zzzzzzzzzzzzzzzzz")
                .field("field2", "value2 xxxxxxxxxxxxxx yyyyyyyyyyyyyyyyyyy zzzzzzzzzzzzzzzzz")
                .field("field2", "value2 xxxxxxxxxxxxxx yyyyyyyyyyyyyyyyyyy zzzzzzzzzzzzzzzzz")
                .field("field2", "value2 xxxxxxxxxxxxxx yyyyyyyyyyyyyyyyyyy zzzzzzzzzzzzzzzzz")
                .endObject().bytes());

        bytes = doc.rootDoc().getBinaryValue("_source");
        assertThat(CompressorFactory.isCompressed(new BytesArray(bytes)), equalTo(true));
    }
}