/*
    *    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 examples.paging;
  
  import static examples.animal.data.AnimalDataDynamicSqlSupport.id;
  import static org.assertj.core.api.Assertions.assertThat;
  
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.sql.Connection;
  import java.sql.DriverManager;
  import java.util.List;
  
  import org.apache.ibatis.datasource.unpooled.UnpooledDataSource;
  import org.apache.ibatis.jdbc.ScriptRunner;
  import org.apache.ibatis.mapping.Environment;
  import org.apache.ibatis.session.Configuration;
  import org.apache.ibatis.session.SqlSession;
  import org.apache.ibatis.session.SqlSessionFactory;
  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import examples.animal.data.AnimalData;
  
  class LimitAndOffsetTest {
  
      private static final String JDBC_URL = "jdbc:hsqldb:mem:aname";
      private static final String JDBC_DRIVER = "org.hsqldb.jdbcDriver";
  
      private SqlSessionFactory sqlSessionFactory;
  
      @BeforeEach
      void setup() throws Exception {
          Class.forName(JDBC_DRIVER);
          try (InputStream is = getClass().getResourceAsStream("/examples/animal/data/CreateAnimalData.sql")) {
              assert is != null;
              try (Connection connection = DriverManager.getConnection(JDBC_URL, "sa", "");
                   InputStreamReader isr = new InputStreamReader(is)) {
                  ScriptRunner sr = new ScriptRunner(connection);
                  sr.setLogWriter(null);
                  sr.runScript(isr);
              }
          }
  
          UnpooledDataSource ds = new UnpooledDataSource(JDBC_DRIVER, JDBC_URL, "sa", "");
          Environment environment = new Environment("test", new JdbcTransactionFactory(), ds);
          Configuration config = new Configuration(environment);
          config.addMapper(LimitAndOffsetMapper.class);
          sqlSessionFactory = new SqlSessionFactoryBuilder().build(config);
      }
  
      @Test
      void testLimitAndOffset() {
          try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
              LimitAndOffsetMapper mapper = sqlSession.getMapper(LimitAndOffsetMapper.class);
  
              List<AnimalData> rows = mapper.selectWithLimitAndOffset(5, 3)
                      .orderBy(id)
                      .build()
                      .execute();
  
              assertThat(rows).hasSize(5);
              assertThat(rows.get(0).id()).isEqualTo(4);
          }
      }
  
      @Test
      void testLimitAndOffsetDistinct() {
          try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
              LimitAndOffsetMapper mapper = sqlSession.getMapper(LimitAndOffsetMapper.class);
  
              List<AnimalData> rows = mapper.selectDistinctWithLimitAndOffset(5, 3)
                      .orderBy(id)
                      .build()
                      .execute();
  
              assertThat(rows).hasSize(5);
              assertThat(rows.get(0).id()).isEqualTo(4);
          }
      }
  }