/*
    *    Copyright 2016-2025 the original author or authors.
    *
    *    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
    *
    *       https://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.mybatis.dynamic.sql.insert.render;
  
  import java.util.Optional;
  
  import org.mybatis.dynamic.sql.SqlColumn;
  import org.mybatis.dynamic.sql.render.RenderingStrategy;
  import org.mybatis.dynamic.sql.util.ConstantMapping;
  import org.mybatis.dynamic.sql.util.InsertMappingVisitor;
  import org.mybatis.dynamic.sql.util.NullMapping;
  import org.mybatis.dynamic.sql.util.PropertyMapping;
  import org.mybatis.dynamic.sql.util.PropertyWhenPresentMapping;
  import org.mybatis.dynamic.sql.util.RowMapping;
  import org.mybatis.dynamic.sql.util.StringConstantMapping;
  import org.mybatis.dynamic.sql.util.StringUtilities;
  
  public class ValuePhraseVisitor extends InsertMappingVisitor<Optional<FieldAndValueAndParameters>> {
  
      protected final RenderingStrategy renderingStrategy;
  
      public ValuePhraseVisitor(RenderingStrategy renderingStrategy) {
          this.renderingStrategy = renderingStrategy;
      }
  
      @Override
      public Optional<FieldAndValueAndParameters> visit(NullMapping mapping) {
          return FieldAndValueAndParameters.withFieldName(mapping.columnName())
                  .withValuePhrase("null") //$NON-NLS-1$
                  .buildOptional();
      }
  
      @Override
      public Optional<FieldAndValueAndParameters> visit(ConstantMapping mapping) {
          return FieldAndValueAndParameters.withFieldName(mapping.columnName())
                  .withValuePhrase(mapping.constant())
                  .buildOptional();
      }
  
      @Override
      public Optional<FieldAndValueAndParameters> visit(StringConstantMapping mapping) {
          return FieldAndValueAndParameters.withFieldName(mapping.columnName())
                  .withValuePhrase(StringUtilities.formatConstantForSQL(mapping.constant()))
                  .buildOptional();
      }
  
      @Override
      public Optional<FieldAndValueAndParameters> visit(PropertyMapping mapping) {
          return FieldAndValueAndParameters.withFieldName(mapping.columnName())
                  .withValuePhrase(calculateJdbcPlaceholder(mapping.column(), mapping.property()))
                  .buildOptional();
      }
  
      @Override
      public Optional<FieldAndValueAndParameters> visit(PropertyWhenPresentMapping mapping) {
          if (mapping.shouldRender()) {
              return visit((PropertyMapping) mapping);
          } else {
              return Optional.empty();
          }
      }
  
      @Override
      public Optional<FieldAndValueAndParameters> visit(RowMapping mapping) {
          return FieldAndValueAndParameters.withFieldName(mapping.columnName())
                  .withValuePhrase(calculateJdbcPlaceholder(mapping.column()))
                  .buildOptional();
      }
  
      private String calculateJdbcPlaceholder(SqlColumn<?> column) {
          return column.renderingStrategy().orElse(renderingStrategy)
                  .getRecordBasedInsertBinding(column, "row"); //$NON-NLS-1$
      }
  
      private String calculateJdbcPlaceholder(SqlColumn<?> column, String parameterName) {
          return column.renderingStrategy().orElse(renderingStrategy)
                  .getRecordBasedInsertBinding(column, "row", parameterName); //$NON-NLS-1$
      }
  }