/*
    *    Copyright 2016-2026 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.select.caseexpression;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.jspecify.annotations.Nullable;
  import org.mybatis.dynamic.sql.AndOrCriteriaGroup;
  import org.mybatis.dynamic.sql.BasicColumn;
  import org.mybatis.dynamic.sql.BindableColumn;
  import org.mybatis.dynamic.sql.ColumnAndConditionCriterion;
  import org.mybatis.dynamic.sql.CriteriaGroup;
  import org.mybatis.dynamic.sql.RenderableCondition;
  import org.mybatis.dynamic.sql.SqlCriterion;
  import org.mybatis.dynamic.sql.dsl.BooleanOperations;
  
  public class SearchedCaseDSL implements ElseDSL<SearchedCaseDSL.SearchedCaseEnder> {
      private final List<SearchedCaseWhenCondition> whenConditions = new ArrayList<>();
      private @Nullable BasicColumn elseValue;
  
      public <T> WhenDSL when(BindableColumn<T> column, RenderableCondition<T> condition,
                              AndOrCriteriaGroup... subCriteria) {
          return when(column, condition, Arrays.asList(subCriteria));
      }
  
      public <T> WhenDSL when(BindableColumn<T> column, RenderableCondition<T> condition,
                              List<AndOrCriteriaGroup> subCriteria) {
          SqlCriterion sqlCriterion = ColumnAndConditionCriterion.withColumn(column)
                  .withCondition(condition)
                  .withSubCriteria(subCriteria)
                  .build();
  
          return initialize(sqlCriterion);
      }
  
      public WhenDSL when(SqlCriterion initialCriterion, AndOrCriteriaGroup... subCriteria) {
          return when(initialCriterion, Arrays.asList(subCriteria));
      }
  
      public WhenDSL when(SqlCriterion initialCriterion, List<AndOrCriteriaGroup> subCriteria) {
          SqlCriterion sqlCriterion = new CriteriaGroup.Builder()
                  .withInitialCriterion(initialCriterion)
                  .withSubCriteria(subCriteria)
                  .build();
  
          return initialize(sqlCriterion);
      }
  
      private WhenDSL initialize(SqlCriterion sqlCriterion) {
          return new WhenDSL(sqlCriterion);
      }
  
      @SuppressWarnings("java:S100")
      @Override
      public SearchedCaseEnder else_(BasicColumn column) {
          elseValue = column;
          return new SearchedCaseEnder();
      }
  
      public SearchedCaseModel end() {
          return new SearchedCaseModel.Builder()
                  .withElseValue(elseValue)
                  .withWhenConditions(whenConditions)
                  .build();
      }
  
      public class WhenDSL implements BooleanOperations<WhenDSL>, ThenDSL<SearchedCaseDSL> {
          protected final SqlCriterion initialCriterion;
          protected final List<AndOrCriteriaGroup> subCriteria = new ArrayList<>();
  
          private WhenDSL(SqlCriterion sqlCriterion) {
              initialCriterion = sqlCriterion;
          }
  
          @Override
          public SearchedCaseDSL then(BasicColumn column) {
              whenConditions.add(new SearchedCaseWhenCondition.Builder()
                      .withInitialCriterion(initialCriterion)
                      .withSubCriteria(subCriteria)
                      .withThenValue(column)
                      .build());
              return SearchedCaseDSL.this;
          }
  
         @Override
         public WhenDSL addSubCriterion(AndOrCriteriaGroup subCriterion) {
             subCriteria.add(subCriterion);
             return this;
         }
     }
 
     public class SearchedCaseEnder {
         public SearchedCaseModel end() {
             return SearchedCaseDSL.this.end();
         }
     }
 
     public static SearchedCaseDSL searchedCase() {
         return new SearchedCaseDSL();
     }
 }