/*
 * 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.action.admin.indices.mapping.get;

import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.cluster.metadata.MappingMetaData;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;

import java.io.IOException;

/**
 */
public class GetMappingsResponse extends ActionResponse {

    private ImmutableOpenMap<String, ImmutableOpenMap<String, MappingMetaData>> mappings = ImmutableOpenMap.of();

    GetMappingsResponse(ImmutableOpenMap<String, ImmutableOpenMap<String, MappingMetaData>> mappings) {
        this.mappings = mappings;
    }

    GetMappingsResponse() {
    }

    public ImmutableOpenMap<String, ImmutableOpenMap<String, MappingMetaData>> mappings() {
        return mappings;
    }

    public ImmutableOpenMap<String, ImmutableOpenMap<String, MappingMetaData>> getMappings() {
        return mappings();
    }

    @Override
    public void readFrom(StreamInput in) throws IOException {
        super.readFrom(in);
        int size = in.readVInt();
        ImmutableOpenMap.Builder<String, ImmutableOpenMap<String, MappingMetaData>> indexMapBuilder = ImmutableOpenMap.builder();
        for (int i = 0; i < size; i++) {
            String key = in.readString();
            int valueSize = in.readVInt();
            ImmutableOpenMap.Builder<String, MappingMetaData> typeMapBuilder = ImmutableOpenMap.builder();
            for (int j = 0; j < valueSize; j++) {
                typeMapBuilder.put(in.readString(), MappingMetaData.readFrom(in));
            }
            indexMapBuilder.put(key, typeMapBuilder.build());
        }
        mappings = indexMapBuilder.build();
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        super.writeTo(out);
        out.writeVInt(mappings.size());
        for (ObjectObjectCursor<String, ImmutableOpenMap<String, MappingMetaData>> indexEntry : mappings) {
            out.writeString(indexEntry.key);
            out.writeVInt(indexEntry.value.size());
            for (ObjectObjectCursor<String, MappingMetaData> typeEntry : indexEntry.value) {
                out.writeString(typeEntry.key);
                MappingMetaData.writeTo(typeEntry.value, out);
            }
        }
    }
}
