/*
    *    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.nestedresulthandler;
  
  import java.io.Reader;
  import java.util.List;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.exceptions.PersistenceException;
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.session.SqlSession;
  import org.apache.ibatis.session.SqlSessionFactory;
  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  class NestedResultHandlerTest {
    private static SqlSessionFactory sqlSessionFactory;
  
    @BeforeAll
    static void setUp() throws Exception {
      // create a SqlSessionFactory
      try (Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/nestedresulthandler/mybatis-config.xml")) {
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
      }
  
      // populate in-memory database
      BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
          "org/apache/ibatis/submitted/nestedresulthandler/CreateDB.sql");
    }
  
    @Test
    void testGetPerson() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Mapper mapper = sqlSession.getMapper(Mapper.class);
  
        List<Person> persons = mapper.getPersons();
  
        Person person = persons.get(0);
        Assertions.assertEquals("grandma", person.getName());
        Assertions.assertTrue(person.owns("book"));
        Assertions.assertTrue(person.owns("tv"));
        Assertions.assertEquals(2, person.getItems().size());
  
        person = persons.get(1);
        Assertions.assertEquals("sister", person.getName());
        Assertions.assertTrue(person.owns("phone"));
        Assertions.assertTrue(person.owns("shoes"));
        Assertions.assertEquals(2, person.getItems().size());
  
        person = persons.get(2);
        Assertions.assertEquals("brother", person.getName());
        Assertions.assertTrue(person.owns("car"));
        Assertions.assertEquals(1, person.getItems().size());
      }
    }
  
    @Test
    // issue #542
    void testGetPersonWithHandler() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        sqlSession.select("getPersons", context -> {
          Person person = (Person) context.getResultObject();
          if ("grandma".equals(person.getName())) {
            Assertions.assertEquals(2, person.getItems().size());
          }
        });
      }
    }
  
    @Test
    void testUnorderedGetPersonWithHandler() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        Assertions.assertThrows(PersistenceException.class, () -> sqlSession.select("getPersonsWithItemsOrdered", context -> {
          Person person = (Person) context.getResultObject();
          if ("grandma".equals(person.getName())) {
            person.getItems().size();
          }
        }));
      }
    }
  
    /**
     * Fix bug caused by issue #542, see new issue #22 on github If we order by a
     * nested result map attribute we can miss some records and end up with
    * duplicates instead.
    */
   @Test
   void testGetPersonOrderedByItem() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       Mapper mapper = sqlSession.getMapper(Mapper.class);
 
       List<Person> persons = mapper.getPersonsWithItemsOrdered();
 
       Person person = persons.get(0);
       Assertions.assertEquals("grandma", person.getName());
       Assertions.assertTrue(person.owns("book"));
       Assertions.assertTrue(person.owns("tv"));
       Assertions.assertEquals(2, person.getItems().size());
 
       person = persons.get(1);
       Assertions.assertEquals("brother", person.getName());
       Assertions.assertTrue(person.owns("car"));
       Assertions.assertEquals(1, person.getItems().size());
 
       person = persons.get(2);
       Assertions.assertEquals("sister", person.getName());
       Assertions.assertTrue(person.owns("phone"));
       Assertions.assertTrue(person.owns("shoes"));
       Assertions.assertEquals(2, person.getItems().size());
     }
   }
 
   @Test // reopen issue 39? (not a bug?)
   void testGetPersonItemPairs() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       Mapper mapper = sqlSession.getMapper(Mapper.class);
       List<PersonItemPair> pairs = mapper.getPersonItemPairs();
 
       Assertions.assertNotNull(pairs);
       // System.out.println( new StringBuilder().append("selected pairs: ").append(pairs) );
 
       Assertions.assertEquals(5, pairs.size());
       Assertions.assertNotNull(pairs.get(0).getPerson());
       Assertions.assertEquals(pairs.get(0).getPerson().getId(), Integer.valueOf(1));
       Assertions.assertNotNull(pairs.get(0).getItem());
       Assertions.assertEquals(pairs.get(0).getItem().getId(), Integer.valueOf(1));
     }
   }
 
 }