/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.iotdb.db.integration;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import org.apache.iotdb.db.engine.version.SimpleFileVersionController;
import org.apache.iotdb.db.service.IoTDB;
import org.apache.iotdb.db.utils.EnvironmentUtils;
import org.apache.iotdb.jdbc.Config;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class IoTDBVersionIT {

  private IoTDB deamon;

  @Before
  public void setUp() throws Exception {
    deamon = IoTDB.getInstance();
    deamon.active();
    EnvironmentUtils.envSetUp();
  }

  @After
  public void tearDown() throws Exception {
    deamon.stop();
    EnvironmentUtils.cleanEnv();
  }

  @Test
  public void testVersionPersist() throws SQLException, ClassNotFoundException {
    Class.forName(Config.JDBC_DRIVER_NAME);
    try(Connection connection = DriverManager
        .getConnection(Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/",
            "root", "root")){
      Statement statement = connection.createStatement();

      statement.execute("SET STORAGE GROUP TO root.versionTest1");
      statement.execute("SET STORAGE GROUP TO root.versionTest2");
      statement.execute("CREATE TIMESERIES root.versionTest1.s0"
          + " WITH DATATYPE=INT32,ENCODING=PLAIN");
      statement.execute("CREATE TIMESERIES root.versionTest2.s0"
          + " WITH DATATYPE=INT32,ENCODING=PLAIN");

      // insert and flush enough times to make the version file persist
      for (int i = 0; i < 2 * SimpleFileVersionController.getSaveInterval(); i ++) {
        for (int j = 1; j <= 100; j ++) {
          statement.execute(String
              .format("INSERT INTO root.versionTest1(timestamp, s0) VALUES (%d, %d)", i*100+j, j));
        }
        statement.execute("FLUSH");
        for (int j = 1; j <= 100; j ++) {
          statement.execute(String
              .format("INSERT INTO root.versionTest2(timestamp, s0) VALUES (%d, %d)", i*100+j, j));
        }
        statement.execute("FLUSH");
//        statement.execute("MERGE");
      }

      statement.close();
    }
  }
}
