/*
    * 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.sql.parser.sql.common.value.identifier;
  
  import com.google.common.base.Strings;
  import lombok.EqualsAndHashCode;
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import lombok.ToString;
  import org.apache.shardingsphere.infra.database.core.metadata.database.enums.QuoteCharacter;
  import org.apache.shardingsphere.sql.parser.sql.common.util.SQLUtils;
  import org.apache.shardingsphere.sql.parser.sql.common.value.ValueASTNode;
  
  /**
   * Identifier value.
   */
  @RequiredArgsConstructor
  @Getter
  @EqualsAndHashCode
  @ToString
  public final class IdentifierValue implements ValueASTNode<String> {
      
      private final String value;
      
      private final QuoteCharacter quoteCharacter;
      
      public IdentifierValue(final String text) {
          this(SQLUtils.getExactlyValue(text), QuoteCharacter.getQuoteCharacter(text));
      }
      
      public IdentifierValue(final String text, final String reservedCharacters) {
          this(SQLUtils.getExactlyValue(text, reservedCharacters), QuoteCharacter.getQuoteCharacter(text));
      }
      
      /**
       * Get value with quote characters, i.e. `table1` or `field1`
       *
       * @return value with quote characters
       */
      public String getValueWithQuoteCharacters() {
          return null == value ? "" : quoteCharacter.wrap(value);
      }
      
      /**
       * Get quoted content.
       *
       * @param text text
       * @return quote content
       */
      public static String getQuotedContent(final String text) {
          if (Strings.isNullOrEmpty(text)) {
              return text;
          }
          QuoteCharacter quoteCharacter = QuoteCharacter.getQuoteCharacter(text);
          if (QuoteCharacter.NONE == quoteCharacter) {
              return text.trim();
          }
          return text.substring(1, text.length() - 1);
      }
  }