/*
    *    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;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Objects;
  import java.util.stream.Stream;
  
  import org.jspecify.annotations.Nullable;
  import org.mybatis.dynamic.sql.SqlTable;
  import org.mybatis.dynamic.sql.insert.render.InsertRenderer;
  import org.mybatis.dynamic.sql.insert.render.InsertStatementProvider;
  import org.mybatis.dynamic.sql.render.RenderingStrategy;
  import org.mybatis.dynamic.sql.util.AbstractColumnMapping;
  import org.mybatis.dynamic.sql.util.Validator;
  
  public class InsertModel<T> {
      private final SqlTable table;
      private final T row;
      private final List<AbstractColumnMapping> columnMappings;
  
      private InsertModel(Builder<T> builder) {
          table = Objects.requireNonNull(builder.table);
          row = Objects.requireNonNull(builder.row);
          columnMappings = Objects.requireNonNull(builder.columnMappings);
          Validator.assertNotEmpty(columnMappings, "ERROR.7"); //$NON-NLS-1$
      }
  
      public Stream<AbstractColumnMapping> columnMappings() {
          return columnMappings.stream();
      }
  
      public T row() {
          return row;
      }
  
      public SqlTable table() {
          return table;
      }
  
      public InsertStatementProvider<T> render(RenderingStrategy renderingStrategy) {
          return InsertRenderer.withInsertModel(this)
                  .withRenderingStrategy(renderingStrategy)
                  .build()
                  .render();
      }
  
      public static <T> Builder<T> withRow(T row) {
          return new Builder<T>().withRow(row);
      }
  
      public static class Builder<T> {
          private @Nullable SqlTable table;
          private @Nullable T row;
          private final List<AbstractColumnMapping> columnMappings = new ArrayList<>();
  
          public Builder<T> withTable(SqlTable table) {
              this.table = table;
              return this;
          }
  
          public Builder<T> withRow(T row) {
              this.row = row;
              return this;
          }
  
          public Builder<T> withColumnMappings(List<? extends AbstractColumnMapping> columnMappings) {
              this.columnMappings.addAll(columnMappings);
              return this;
          }
  
          public InsertModel<T> build() {
              return new InsertModel<>(this);
          }
      }
  }