/*
    *    Copyright 2009-2021 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
    *
    *       http://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.apache.ibatis.submitted.refcursor;
  
  import static org.junit.jupiter.api.Assertions.*;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.mapping.Environment;
  import org.apache.ibatis.session.Configuration;
  import org.apache.ibatis.session.ResultContext;
  import org.apache.ibatis.session.ResultHandler;
  import org.apache.ibatis.session.SqlSession;
  import org.apache.ibatis.session.SqlSessionFactory;
  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  import org.apache.ibatis.testcontainers.PgContainer;
  import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Tag;
  import org.junit.jupiter.api.Test;
  
  /**
   * @author Jeff Butler
   */
  @Tag("TestcontainersTests")
  class RefCursorTest {
  
    private static SqlSessionFactory sqlSessionFactory;
  
    @BeforeAll
    static void setUp() throws Exception {
      Configuration configuration = new Configuration();
      Environment environment = new Environment("development", new JdbcTransactionFactory(),
          PgContainer.getUnpooledDataSource());
      configuration.setEnvironment(environment);
      configuration.addMapper(OrdersMapper.class);
      sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
  
      BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
          "org/apache/ibatis/submitted/refcursor/CreateDB.sql");
    }
  
    @Test
    void testRefCursor1() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        OrdersMapper mapper = sqlSession.getMapper(OrdersMapper.class);
        Map<String, Object> parameter = new HashMap<>();
        parameter.put("orderId", 1);
        mapper.getOrder1(parameter);
  
        assertNotNull(parameter.get("order"));
        @SuppressWarnings("unchecked")
        List<Order> orders = (List<Order>) parameter.get("order");
        assertEquals(1, orders.size());
        Order order = orders.get(0);
        assertEquals(3, order.getDetailLines().size());
      }
    }
  
    @Test
    void testRefCursor2() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        OrdersMapper mapper = sqlSession.getMapper(OrdersMapper.class);
        Map<String, Object> parameter = new HashMap<>();
        parameter.put("orderId", 1);
        mapper.getOrder2(parameter);
  
        assertNotNull(parameter.get("order"));
        @SuppressWarnings("unchecked")
        List<Order> orders = (List<Order>) parameter.get("order");
        assertEquals(1, orders.size());
        Order order = orders.get(0);
        assertEquals(3, order.getDetailLines().size());
      }
    }
  
    @Test
    void shouldUseResultHandlerOnOutputParam() {
      class OrderResultHandler implements ResultHandler<Order> {
        private List<Order> orders = new ArrayList<>();
  
        @Override
       public void handleResult(ResultContext<? extends Order> resultContext) {
         Order order = resultContext.getResultObject();
         order.setCustomerName("Anonymous");
         orders.add(order);
       }
 
       List<Order> getResult() {
         return orders;
       }
     }
 
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       OrdersMapper mapper = sqlSession.getMapper(OrdersMapper.class);
       OrderResultHandler handler = new OrderResultHandler();
       Map<String, Object> parameter = new HashMap<>();
       parameter.put("orderId", 1);
       mapper.getOrder3(parameter, handler);
 
       assertNull(parameter.get("order"));
       assertEquals(3, parameter.get("detailCount"));
       assertEquals("Anonymous", handler.getResult().get(0).getCustomerName());
     }
   }
 
   @Test
   void shouldNullResultSetNotCauseNpe() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       OrdersMapper mapper = sqlSession.getMapper(OrdersMapper.class);
       Map<String, Object> parameter = new HashMap<>();
       parameter.put("orderId", 99);
       mapper.getOrder3(parameter, resultContext -> {
         // won't be used
       });
       assertEquals(0, parameter.get("detailCount"));
     }
   }
 }