/*
    * 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.core.ingest.position.type.pk;
  
  import com.google.common.base.Preconditions;
  import com.google.common.base.Splitter;
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import org.apache.shardingsphere.data.pipeline.core.ingest.position.IngestPosition;
  import org.apache.shardingsphere.data.pipeline.core.ingest.position.type.pk.type.IntegerPrimaryKeyIngestPosition;
  import org.apache.shardingsphere.data.pipeline.core.ingest.position.type.pk.type.StringPrimaryKeyIngestPosition;
  import org.apache.shardingsphere.data.pipeline.core.ingest.position.type.pk.type.UnsupportedKeyIngestPosition;
  
  import java.util.List;
  
  /**
   * Primary key ingest position factory.
   */
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public final class PrimaryKeyIngestPositionFactory {
      
      /**
       * Create new instance by string data.
       *
       * @param data string data
       * @return primary key position
       * @throws IllegalArgumentException illegal argument exception
       */
      public static IngestPosition newInstance(final String data) {
          List<String> parts = Splitter.on(',').splitToList(data);
          Preconditions.checkArgument(3 == parts.size(), "Unknown primary key position: " + data);
          Preconditions.checkArgument(1 == parts.get(0).length(), "Invalid primary key position type: " + parts.get(0));
          char type = parts.get(0).charAt(0);
          String beginValue = parts.get(1);
          String endValue = parts.get(2);
          switch (type) {
              case 'i':
                  return new IntegerPrimaryKeyIngestPosition(Long.parseLong(beginValue), Long.parseLong(endValue));
              case 's':
                  return new StringPrimaryKeyIngestPosition(beginValue, endValue);
              case 'u':
                  return new UnsupportedKeyIngestPosition();
              default:
                  throw new IllegalArgumentException("Unknown primary key position type: " + type);
          }
      }
      
      /**
       * New instance by begin value and end value.
       *
       * @param beginValue begin value
       * @param endValue end value
       * @return ingest position
       */
      public static IngestPosition newInstance(final Object beginValue, final Object endValue) {
          if (beginValue instanceof Number) {
              return new IntegerPrimaryKeyIngestPosition(((Number) beginValue).longValue(), null != endValue ? ((Number) endValue).longValue() : Long.MAX_VALUE);
          }
          if (beginValue instanceof CharSequence) {
              return new StringPrimaryKeyIngestPosition(beginValue.toString(), null != endValue ? endValue.toString() : null);
          }
          // TODO support more types, e.g. byte[] (MySQL varbinary)
          return new UnsupportedKeyIngestPosition();
      }
  }