/*
    *    Copyright 2006-2023 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.generator.codegen.mybatis3.xmlmapper.elements;
  
  import org.mybatis.generator.api.IntrospectedColumn;
  import org.mybatis.generator.api.dom.xml.Attribute;
  import org.mybatis.generator.api.dom.xml.TextElement;
  import org.mybatis.generator.api.dom.xml.XmlElement;
  import org.mybatis.generator.codegen.mybatis3.ListUtilities;
  import org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities;
  
  public class InsertSelectiveElementGenerator extends AbstractXmlElementGenerator {
  
      public InsertSelectiveElementGenerator() {
          super();
      }
  
      @Override
      public void addElements(XmlElement parentElement) {
          XmlElement answer = buildInitialInsert(introspectedTable.getInsertSelectiveStatementId(),
                  introspectedTable.getRules().calculateAllFieldsClass());
  
          StringBuilder sb = new StringBuilder();
  
          sb.append("insert into "); //$NON-NLS-1$
          sb.append(introspectedTable.getFullyQualifiedTableNameAtRuntime());
          answer.addElement(new TextElement(sb.toString()));
  
          XmlElement insertTrimElement = new XmlElement("trim"); //$NON-NLS-1$
          insertTrimElement.addAttribute(new Attribute("prefix", "(")); //$NON-NLS-1$ //$NON-NLS-2$
          insertTrimElement.addAttribute(new Attribute("suffix", ")")); //$NON-NLS-1$ //$NON-NLS-2$
          insertTrimElement.addAttribute(new Attribute("suffixOverrides", ",")); //$NON-NLS-1$ //$NON-NLS-2$
          answer.addElement(insertTrimElement);
  
          XmlElement valuesTrimElement = new XmlElement("trim"); //$NON-NLS-1$
          valuesTrimElement.addAttribute(new Attribute("prefix", "values (")); //$NON-NLS-1$ //$NON-NLS-2$
          valuesTrimElement.addAttribute(new Attribute("suffix", ")")); //$NON-NLS-1$ //$NON-NLS-2$
          valuesTrimElement.addAttribute(new Attribute("suffixOverrides", ",")); //$NON-NLS-1$ //$NON-NLS-2$
          answer.addElement(valuesTrimElement);
  
          for (IntrospectedColumn introspectedColumn :
                  ListUtilities.removeIdentityAndGeneratedAlwaysColumns(introspectedTable.getAllColumns())) {
  
              if (introspectedColumn.isSequenceColumn()
                      || introspectedColumn.getFullyQualifiedJavaType().isPrimitive()) {
                  // if it is a sequence column, it is not optional
                  // This is required for MyBatis3 because MyBatis3 parses
                  // and calculates the SQL before executing the selectKey
  
                  // if it is primitive, we cannot do a null check
                  sb.setLength(0);
                  sb.append(MyBatis3FormattingUtilities.getEscapedColumnName(introspectedColumn));
                  sb.append(',');
                  insertTrimElement.addElement(new TextElement(sb.toString()));
  
                  sb.setLength(0);
                  sb.append(MyBatis3FormattingUtilities.getParameterClause(introspectedColumn));
                  sb.append(',');
                  valuesTrimElement.addElement(new TextElement(sb.toString()));
  
                  continue;
              }
  
              sb.setLength(0);
              sb.append(introspectedColumn.getJavaProperty());
              sb.append(" != null"); //$NON-NLS-1$
              XmlElement insertNotNullElement = new XmlElement("if"); //$NON-NLS-1$
              insertNotNullElement.addAttribute(new Attribute(
                      "test", sb.toString())); //$NON-NLS-1$
  
              sb.setLength(0);
              sb.append(MyBatis3FormattingUtilities.getEscapedColumnName(introspectedColumn));
              sb.append(',');
              insertNotNullElement.addElement(new TextElement(sb.toString()));
              insertTrimElement.addElement(insertNotNullElement);
  
              sb.setLength(0);
              sb.append(introspectedColumn.getJavaProperty());
              sb.append(" != null"); //$NON-NLS-1$
              XmlElement valuesNotNullElement = new XmlElement("if"); //$NON-NLS-1$
              valuesNotNullElement.addAttribute(new Attribute("test", sb.toString())); //$NON-NLS-1$
  
              sb.setLength(0);
              sb.append(MyBatis3FormattingUtilities.getParameterClause(introspectedColumn));
              sb.append(',');
              valuesNotNullElement.addElement(new TextElement(sb.toString()));
             valuesTrimElement.addElement(valuesNotNullElement);
         }
 
         if (context.getPlugins().sqlMapInsertSelectiveElementGenerated(answer, introspectedTable)) {
             parentElement.addElement(answer);
         }
     }
 }