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/*
 * Copyright (c) 2019 Uber Technologies, Inc. ([email protected])
 *
 * Licensed 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 com.uber.hoodie.common.table.timeline.dto;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.uber.hoodie.common.model.HoodieFileGroup;
import com.uber.hoodie.common.table.HoodieTableMetaClient;
import java.util.List;
import java.util.stream.Collectors;

@JsonIgnoreProperties(ignoreUnknown = true)
public class FileGroupDTO {

  @JsonProperty("partition")
  String partition;

  @JsonProperty("fileId")
  String id;

  @JsonProperty("slices")
  List slices;

  @JsonProperty("timeline")
  TimelineDTO timeline;

  public static FileGroupDTO fromFileGroup(HoodieFileGroup fileGroup) {
    FileGroupDTO dto = new FileGroupDTO();
    dto.partition = fileGroup.getPartitionPath();
    dto.id = fileGroup.getFileGroupId().getFileId();
    dto.slices = fileGroup.getAllRawFileSlices().map(FileSliceDTO::fromFileSlice).collect(Collectors.toList());
    dto.timeline = TimelineDTO.fromTimeline(fileGroup.getTimeline());
    return dto;
  }

  public static HoodieFileGroup toFileGroup(FileGroupDTO dto, HoodieTableMetaClient metaClient) {
    HoodieFileGroup fileGroup = new HoodieFileGroup(dto.partition, dto.id,
        TimelineDTO.toTimeline(dto.timeline, metaClient));
    dto.slices.stream().map(FileSliceDTO::toFileSlice).forEach(fileSlice -> fileGroup.addFileSlice(fileSlice));
    return fileGroup;
  }
}