/*
    *    Copyright 2015-2022 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.scripting.freemarker;
  
  import java.io.Reader;
  import java.sql.Connection;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.jdbc.ScriptRunner;
  import org.apache.ibatis.mapping.Environment;
  import org.apache.ibatis.mapping.SqlSource;
  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.TransactionFactory;
  import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
  import org.hsqldb.jdbc.JDBCDataSource;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  import freemarker.template.SimpleScalar;
  import freemarker.template.Template;
  import freemarker.template.Version;
  
  /**
   * @author elwood
   */
  class CustomizedDataContextTest {
    private static SqlSessionFactory sqlSessionFactory;
  
    @BeforeAll
    static void setUp() throws Exception {
      Class.forName("org.hsqldb.jdbcDriver");
  
      JDBCDataSource dataSource = new JDBCDataSource();
      dataSource.setUrl("jdbc:hsqldb:mem:db4");
      dataSource.setUser("sa");
      dataSource.setPassword("");
  
      try (Connection conn = dataSource.getConnection()) {
        try (Reader reader = Resources.getResourceAsReader("org/mybatis/scripting/freemarker/create-db.sql")) {
          ScriptRunner runner = new ScriptRunner(conn);
          runner.setLogWriter(null);
          runner.setErrorLogWriter(null);
          runner.runScript(reader);
          conn.commit();
        }
      }
  
      TransactionFactory transactionFactory = new JdbcTransactionFactory();
      Environment environment = new Environment("development", transactionFactory, dataSource);
  
      // You can call configuration.setDefaultScriptingLanguage(FreeMarkerLanguageDriver.class)
      // after this to use FreeMarker driver by default.
      Configuration configuration = new Configuration(environment);
  
      configuration.addMapper(CustomizedDataContextMapper.class);
      sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
    }
  
    public static class CustomSqlSource extends FreeMarkerSqlSource {
      CustomSqlSource(Template template, Configuration configuration, Version version) {
        super(template, configuration, version);
      }
  
      @Override
      @SuppressWarnings("unchecked")
      protected Object preProcessDataContext(Object dataContext, boolean isMap) {
        dataContext = super.preProcessDataContext(dataContext, isMap);
        if (isMap) {
          ((Map<String, Object>) dataContext).put("MY_NAME", new SimpleScalar("Barney"));
        } else {
          ((ParamObjectAdapter) dataContext).putAdditionalParam("MY_NAME", new SimpleScalar("Barney"));
        }
        return dataContext;
      }
    }
  
    public static class CustomFreeMarkerLanguageDriver extends FreeMarkerLanguageDriver {
      @Override
      protected SqlSource createSqlSource(Template template, Configuration configuration) {
        return new CustomSqlSource(template, configuration, freemarkerCfg.getIncompatibleImprovements());
     }
   }
 
   @Test
   void test() {
     try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
       CustomizedDataContextMapper mapper = sqlSession.getMapper(CustomizedDataContextMapper.class);
       List<Name> names = mapper.find();
       Assertions.assertEquals(1, names.size());
     }
   }
 }