/*
    *    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.batch_keys;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.io.Reader;
  import java.sql.Connection;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.ResultSetMetaData;
  import java.sql.Statement;
  import java.util.List;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.session.ExecutorType;
  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.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  class BatchKeysTest {
  
    private SqlSessionFactory sqlSessionFactory;
  
    @BeforeEach
    void setUp() throws Exception {
      try (Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/batch_keys/Config.xml")) {
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
      }
  
      BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
              "org/apache/ibatis/submitted/batch_keys/CreateDB.sql");
    }
  
    public void testJdbc3Support() throws Exception {
      try (Connection conn = sqlSessionFactory.getConfiguration().getEnvironment().getDataSource().getConnection();
           PreparedStatement stmt = conn.prepareStatement("insert into users2 values(null, 'Pocoyo')", Statement.RETURN_GENERATED_KEYS)) {
        stmt.addBatch();
        stmt.executeBatch();
        try (ResultSet rs = stmt.getGeneratedKeys()) {
          if (rs.next()) {
            ResultSetMetaData rsmd = rs.getMetaData();
            int colCount = rsmd.getColumnCount();
            do {
              for (int i = 1; i <= colCount; i++) {
                String key = rs.getString(i);
                System.out.println("key " + i + " is " + key);
              }
            } while (rs.next());
          } else {
            System.out.println("There are no generated keys.");
          }
        }
      }
    }
  
    @Test
    void testInsert() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH)) {
        User user1 = new User(null, "Pocoyo");
        sqlSession.insert("insert", user1);
        User user2 = new User(null, "Valentina");
        sqlSession.insert("insert", user2);
        sqlSession.flushStatements();
        assertEquals(Integer.valueOf(50), user1.getId());
        assertEquals(Integer.valueOf(50), user2.getId());
        sqlSession.commit();
      }
      try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
        List<User> users = sqlSession.selectList("select");
        Assertions.assertEquals( 2, users.size());
      }
    }
  
    @Test
    void testInsertJdbc3() {
      try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH)) {
        User user1 = new User(null, "Pocoyo");
        sqlSession.insert("insertIdentity", user1);
        User user2 = new User(null, "Valentina");
        sqlSession.insert("insertIdentity", user2);
        sqlSession.flushStatements();
       assertEquals(Integer.valueOf(0), user1.getId());
       assertEquals(Integer.valueOf(1), user2.getId());
       sqlSession.commit();
     }
 
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       List<User> users = sqlSession.selectList("selectIdentity");
       Assertions.assertEquals(2, users.size());
     }
   }
 
   @Test
   void testInsertWithMapper() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH)) {
       Mapper userMapper = sqlSession.getMapper(Mapper.class);
       User user1 = new User(null, "Pocoyo");
       userMapper.insert(user1);
       User user2 = new User(null, "Valentina");
       userMapper.insert(user2);
       sqlSession.flushStatements();
       assertEquals(Integer.valueOf(50), user1.getId());
       assertEquals(Integer.valueOf(50), user2.getId());
       sqlSession.commit();
     }
 
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       List<User> users = sqlSession.selectList("select");
       Assertions.assertEquals(2, users.size());
     }
   }
 
   @Test
   void testInsertMapperJdbc3() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH)) {
       Mapper userMapper = sqlSession.getMapper(Mapper.class);
       User user1 = new User(null, "Pocoyo");
       userMapper.insertIdentity(user1);
       User user2 = new User(null, "Valentina");
       userMapper.insertIdentity(user2);
       sqlSession.flushStatements();
       assertEquals(Integer.valueOf(0), user1.getId());
       assertEquals(Integer.valueOf(1), user2.getId());
       sqlSession.commit();
     }
 
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       List<User> users = sqlSession.selectList("selectIdentity");
       Assertions.assertEquals(2, users.size());
     }
   }
 
   @Test
   void testInsertMapperNoBatchJdbc3() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       Mapper userMapper = sqlSession.getMapper(Mapper.class);
       User user1 = new User(null, "Pocoyo");
       userMapper.insertIdentity(user1);
       assertEquals(Integer.valueOf(0), user1.getId());
       sqlSession.commit();
     }
 
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       List<User> users = sqlSession.selectList("selectIdentity");
       Assertions.assertEquals(1, users.size());
     }
   }
 
 }