/*
    *    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.runtime.kotlin.elements;
  
  import java.util.List;
  
  import org.mybatis.generator.api.IntrospectedColumn;
  import org.mybatis.generator.api.dom.kotlin.FullyQualifiedKotlinType;
  import org.mybatis.generator.api.dom.kotlin.KotlinArg;
  import org.mybatis.generator.api.dom.kotlin.KotlinFile;
  import org.mybatis.generator.api.dom.kotlin.KotlinFunction;
  import org.mybatis.generator.codegen.mybatis3.ListUtilities;
  import org.mybatis.generator.runtime.dynamic.sql.elements.Utils;
  
  public class InsertMultipleMethodGenerator extends AbstractKotlinFunctionGenerator {
      private final FullyQualifiedKotlinType recordType;
      private final String mapperName;
      private final String supportObjectImport;
  
      private InsertMultipleMethodGenerator(Builder builder) {
          super(builder);
          recordType = builder.recordType;
          mapperName = builder.mapperName;
          supportObjectImport = builder.supportObjectImport;
      }
  
      @Override
      public KotlinFunctionAndImports generateMethodAndImports() {
          if (!Utils.generateMultipleRowInsert(introspectedTable)) {
              return null;
          }
  
          // Kotlin type inference gets lost if we don't name the helper method something different from the
          // regular mapper method
          String functionImport;
          String functionShortName;
          if (Utils.canRetrieveMultiRowGeneratedKeys(introspectedTable)) {
              functionImport =
                      "org.mybatis.dynamic.sql.util.kotlin.mybatis3.insertMultipleWithGeneratedKeys"; //$NON-NLS-1$
              functionShortName = "insertMultipleWithGeneratedKeys"; //$NON-NLS-1$
          } else {
              functionImport = "org.mybatis.dynamic.sql.util.kotlin.mybatis3.insertMultiple"; //$NON-NLS-1$
              functionShortName = "insertMultiple"; //$NON-NLS-1$
          }
  
          KotlinFunctionAndImports functionAndImports = KotlinFunctionAndImports.withFunction(
                  KotlinFunction.newOneLineFunction(mapperName + ".insertMultiple") //$NON-NLS-1$
                  .withArgument(KotlinArg.newArg("records") //$NON-NLS-1$
                          .withDataType("Collection<" //$NON-NLS-1$
                                  + recordType.getShortNameWithTypeArguments()
                                  + ">") //$NON-NLS-1$
                          .build())
                  .build())
                  .withImport(functionImport)
                  .withImports(recordType.getImportList())
                  .build();
  
          addFunctionComment(functionAndImports);
  
          KotlinFunction function = functionAndImports.getFunction();
  
          function.addCodeLine(functionShortName + "(this::insertMultiple" //$NON-NLS-1$
                  + ", records, " + tableFieldName //$NON-NLS-1$
                  + ") {"); //$NON-NLS-1$
  
          List<IntrospectedColumn> columns =
                  ListUtilities.removeIdentityAndGeneratedAlwaysColumns(introspectedTable.getAllColumns());
          for (IntrospectedColumn column : columns) {
              AbstractKotlinFunctionGenerator.FieldNameAndImport fieldNameAndImport =
                      AbstractKotlinFunctionGenerator.calculateFieldNameAndImport(tableFieldName,
                              supportObjectImport, column);
              functionAndImports.getImports().add(fieldNameAndImport.importString());
  
              function.addCodeLine("    map(" + fieldNameAndImport.fieldName() //$NON-NLS-1$
                      + ") toProperty \"" + column.getJavaProperty() //$NON-NLS-1$
                      + "\""); //$NON-NLS-1$
          }
  
          function.addCodeLine("}"); //$NON-NLS-1$
  
          return functionAndImports;
      }
  
      @Override
      public boolean callPlugins(KotlinFunction kotlinFunction, KotlinFile kotlinFile) {
          return context.getPlugins().clientInsertMultipleMethodGenerated(kotlinFunction, kotlinFile, introspectedTable);
     }
 
     public static class Builder extends BaseBuilder<Builder> {
         private FullyQualifiedKotlinType recordType;
         private String mapperName;
         private String supportObjectImport;
 
         public Builder withRecordType(FullyQualifiedKotlinType recordType) {
             this.recordType = recordType;
             return this;
         }
 
         public Builder withMapperName(String mapperName) {
             this.mapperName = mapperName;
             return this;
         }
 
         public Builder withSupportObjectImport(String supportObjectImport) {
             this.supportObjectImport = supportObjectImport;
             return this;
         }
 
         @Override
         public Builder getThis() {
             return this;
         }
 
         public InsertMultipleMethodGenerator build() {
             return new InsertMultipleMethodGenerator(this);
         }
     }
 }