/*
    *    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.where.render;
  
  import static org.mybatis.dynamic.sql.util.StringUtilities.spaceBefore;
  
  import java.util.Objects;
  
  import org.jspecify.annotations.Nullable;
  import org.mybatis.dynamic.sql.util.FragmentAndParameters;
  
  public class RenderedCriterion {
      private final @Nullable String connector;
      private final FragmentAndParameters fragmentAndParameters;
  
      private RenderedCriterion(Builder builder) {
          connector = builder.connector;
          fragmentAndParameters = Objects.requireNonNull(builder.fragmentAndParameters);
      }
  
      public FragmentAndParameters fragmentAndParameters() {
          return fragmentAndParameters;
      }
  
      public FragmentAndParameters fragmentAndParametersWithConnector() {
          if (connector == null) {
              return fragmentAndParameters;
          } else {
              return prependFragment(fragmentAndParameters, connector);
          }
      }
  
      public RenderedCriterion withConnector(String connector) {
          return new RenderedCriterion.Builder()
                  .withFragmentAndParameters(fragmentAndParameters)
                  .withConnector(connector)
                  .build();
      }
  
      private FragmentAndParameters prependFragment(FragmentAndParameters fragmentAndParameters, String connector) {
          return fragmentAndParameters.mapFragment(s -> connector + spaceBefore(s));
      }
  
      public static class Builder {
          private @Nullable String connector;
          private @Nullable FragmentAndParameters fragmentAndParameters;
  
          public Builder withConnector(String connector) {
              this.connector = connector;
              return this;
          }
  
          public Builder withFragmentAndParameters(FragmentAndParameters fragmentAndParameters) {
              this.fragmentAndParameters = fragmentAndParameters;
              return this;
          }
  
          public RenderedCriterion build() {
              return new RenderedCriterion(this);
          }
      }
  }