/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF 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.apache.shardingsphere.data.pipeline.cdc.client.util;
  
  import com.google.protobuf.Any;
  import com.google.protobuf.BoolValue;
  import com.google.protobuf.BytesValue;
  import com.google.protobuf.DoubleValue;
  import com.google.protobuf.Empty;
  import com.google.protobuf.FloatValue;
  import com.google.protobuf.Int32Value;
  import com.google.protobuf.Int64Value;
  import com.google.protobuf.InvalidProtocolBufferException;
  import com.google.protobuf.StringValue;
  import com.google.protobuf.Struct;
  import com.google.protobuf.UInt32Value;
  import com.google.protobuf.UInt64Value;
  import com.google.protobuf.util.JsonFormat;
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import lombok.extern.slf4j.Slf4j;
  
  import java.sql.Timestamp;
  
  /**
   * Protobuf any value converter.
   */
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  @Slf4j
  public final class ProtobufAnyValueConverter {
      
      /**
       * Convert any to object.
       *
       * @param any any
       * @return object
       * @throws InvalidProtocolBufferException invalid protocol buffer exception
       * @throws UnsupportedOperationException unsupported operation exception
       */
      public static Object convertToObject(final Any any) throws InvalidProtocolBufferException {
          if (null == any || any.is(Empty.class)) {
              return null;
          }
          if (any.is(StringValue.class)) {
              return any.unpack(StringValue.class).getValue();
          }
          if (any.is(Int32Value.class)) {
              return any.unpack(Int32Value.class).getValue();
          }
          if (any.is(Int64Value.class)) {
              return any.unpack(Int64Value.class).getValue();
          }
          if (any.is(Int64Value.class)) {
              return any.unpack(Int64Value.class).getValue();
          }
          if (any.is(UInt32Value.class)) {
              return any.unpack(UInt64Value.class).getValue();
          }
          if (any.is(UInt64Value.class)) {
              return any.unpack(UInt64Value.class).getValue();
          }
          if (any.is(FloatValue.class)) {
              return any.unpack(FloatValue.class).getValue();
          }
          if (any.is(DoubleValue.class)) {
              return any.unpack(DoubleValue.class).getValue();
          }
          if (any.is(BoolValue.class)) {
              return any.unpack(BoolValue.class).getValue();
          }
          if (any.is(BytesValue.class)) {
              return any.unpack(BytesValue.class).getValue().toByteArray();
          }
          if (any.is(com.google.protobuf.Timestamp.class)) {
              return converProtobufTimestamp(any.unpack(com.google.protobuf.Timestamp.class));
          }
          if (any.is(Struct.class)) {
              return JsonFormat.printer().print(any.unpack(Struct.class));
          }
          // TODO can't use JsonFormat, might change the original value without error prompt. there need to cover more types,
          log.error("not support unpack value={}", any);
          throw new UnsupportedOperationException(String.format("not support unpack the type %s", any.getTypeUrl()));
      }
      
     private static Timestamp converProtobufTimestamp(final com.google.protobuf.Timestamp timestamp) {
         Timestamp result = new Timestamp(timestamp.getSeconds() * 1000);
         result.setNanos(timestamp.getNanos());
         return result;
     }
 }