/*
 * 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 static org.junit.Assert.fail;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Types;
import org.apache.iotdb.db.utils.EnvironmentUtils;
import org.apache.iotdb.jdbc.Config;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

public class IoTDBQueryDemoIT {

  private static String[] sqls = new String[]{
      "set storage group to root.ln",
      "create timeseries root.ln.wf01.wt01.status with datatype=BOOLEAN,encoding=PLAIN",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465600000,true)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465660000,true)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465720000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465780000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465840000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465900000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509465960000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509466020000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509466080000,false)",
      "insert into root.ln.wf01.wt01(timestamp,status) values(1509466140000,false)",
      "create timeseries root.ln.wf01.wt01.temperature with datatype=FLOAT,encoding=RLE",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465600000,25.957603)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465660000,24.359503)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465720000,20.092794)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465780000,20.182663)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465840000,21.125198)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465900000,22.720892)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509465960000,20.71)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509466020000,21.451046)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509466080000,22.57987)",
      "insert into root.ln.wf01.wt01(timestamp,temperature) values(1509466140000,20.98177)",
      "create timeseries root.ln.wf02.wt02.hardware with datatype=TEXT,encoding=PLAIN",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465600000,\"v2\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465660000,\"v2\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465720000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465780000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465840000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465900000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509465960000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509466020000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509466080000,\"v1\")",
      "insert into root.ln.wf02.wt02(timestamp,hardware) values(1509466140000,\"v1\")",
      "create timeseries root.ln.wf02.wt02.status with datatype=BOOLEAN,encoding=PLAIN",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465600000,true)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465660000,true)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465720000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465780000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465840000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465900000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509465960000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509466020000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509466080000,false)",
      "insert into root.ln.wf02.wt02(timestamp,status) values(1509466140000,false)",
      "set storage group to root.sgcc",
      "create timeseries root.sgcc.wf03.wt01.status with datatype=BOOLEAN,encoding=PLAIN",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465600000,true)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465660000,true)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465720000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465780000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465840000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465900000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509465960000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509466020000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509466080000,false)",
      "insert into root.sgcc.wf03.wt01(timestamp,status) values(1509466140000,false)",
      "create timeseries root.sgcc.wf03.wt01.temperature with datatype=FLOAT,encoding=RLE",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465600000,25.957603)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465660000,24.359503)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465720000,20.092794)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465780000,20.182663)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465840000,21.125198)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465900000,22.720892)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509465960000,20.71)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509466020000,21.451046)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509466080000,22.57987)",
      "insert into root.sgcc.wf03.wt01(timestamp,temperature) values(1509466140000,20.98177)",
  };

  @BeforeClass
  public static void setUp() throws Exception {
    EnvironmentUtils.closeStatMonitor();
    EnvironmentUtils.envSetUp();

    importData();
  }

  @AfterClass
  public static void tearDown() throws Exception {
    EnvironmentUtils.cleanEnv();
  }

  private static void importData() throws ClassNotFoundException, SQLException {
    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()) {

      for (String sql : sqls) {
        statement.execute(sql);
      }
    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }

  @Test
  public void selectTest() throws ClassNotFoundException {
    String[] retArray = new String[]{
        "1509465600000,true,25.96,v2,true,true,25.96,",
        "1509465660000,true,24.36,v2,true,true,24.36,",
        "1509465720000,false,20.09,v1,false,false,20.09,",
        "1509465780000,false,20.18,v1,false,false,20.18,",
        "1509465840000,false,21.13,v1,false,false,21.13,",
        "1509465900000,false,22.72,v1,false,false,22.72,",
        "1509465960000,false,20.71,v1,false,false,20.71,",
        "1509466020000,false,21.45,v1,false,false,21.45,",
        "1509466080000,false,22.58,v1,false,false,22.58,",
        "1509466140000,false,20.98,v1,false,false,20.98,",
    };

    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()) {
      boolean hasResultSet = statement.execute(
          "select * from root where time>10");
      Assert.assertTrue(hasResultSet);

      try (ResultSet resultSet = statement.getResultSet()) {
        ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
        StringBuilder header = new StringBuilder();
        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
          header.append(resultSetMetaData.getColumnName(i)).append(",");
        }
        Assert.assertEquals(
            "Time,root.ln.wf01.wt01.status,root.ln.wf01.wt01.temperature,"
                + "root.ln.wf02.wt02.hardware,root.ln.wf02.wt02.status,root.sgcc.wf03.wt01.status,"
                + "root.sgcc.wf03.wt01.temperature,", header.toString());
        Assert.assertEquals(Types.TIMESTAMP, resultSetMetaData.getColumnType(1));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(2));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(3));
        Assert.assertEquals(Types.VARCHAR, resultSetMetaData.getColumnType(4));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(5));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(6));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(7));

        int cnt = 0;
        while (resultSet.next()) {
          StringBuilder builder = new StringBuilder();
          for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
            builder.append(resultSet.getString(i)).append(",");
          }
          Assert.assertEquals(retArray[cnt], builder.toString());
          cnt++;
        }
        Assert.assertEquals(10, cnt);
      }
    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }

  @Test
  public void LimitTest() throws ClassNotFoundException {
    String[] retArray = new String[]{
        "1509465780000,false,20.18,v1,false,false,20.18,",
        "1509465840000,false,21.13,v1,false,false,21.13,",
        "1509465900000,false,22.72,v1,false,false,22.72,",
        "1509465960000,false,20.71,v1,false,false,20.71,",
        "1509466020000,false,21.45,v1,false,false,21.45,",
    };

    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()) {

      // test 1: fetchSize < limitNumber
      statement.setFetchSize(4);
      Assert.assertEquals(4, statement.getFetchSize());
      boolean hasResultSet = statement.execute("select * from root where time>10 limit 5 offset 3");
      Assert.assertTrue(hasResultSet);
      try (ResultSet resultSet = statement.getResultSet()) {
        ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
        StringBuilder header = new StringBuilder();
        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
          header.append(resultSetMetaData.getColumnName(i)).append(",");
        }
        Assert.assertEquals(
            "Time,root.ln.wf01.wt01.status,root.ln.wf01.wt01.temperature,"
                + "root.ln.wf02.wt02.hardware,root.ln.wf02.wt02.status,root.sgcc.wf03.wt01.status,"
                + "root.sgcc.wf03.wt01.temperature,", header.toString());
        Assert.assertEquals(Types.TIMESTAMP, resultSetMetaData.getColumnType(1));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(2));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(3));
        Assert.assertEquals(Types.VARCHAR, resultSetMetaData.getColumnType(4));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(5));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(6));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(7));

        int cnt = 0;
        while (resultSet.next()) {
          StringBuilder builder = new StringBuilder();
          for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
            builder.append(resultSet.getString(i)).append(",");
          }
          Assert.assertEquals(retArray[cnt], builder.toString());
          cnt++;
        }
        Assert.assertEquals(5, cnt);
      }

      // test 1: fetchSize > limitNumber
      statement.setFetchSize(10000);
      Assert.assertEquals(10000, statement.getFetchSize());
      hasResultSet = statement.execute("select * from root where time>10 limit 5 offset 3");
      Assert.assertTrue(hasResultSet);
      try (ResultSet resultSet = statement.getResultSet()) {
        ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
        StringBuilder header = new StringBuilder();
        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
          header.append(resultSetMetaData.getColumnName(i)).append(",");
        }
        Assert.assertEquals(
            "Time,root.ln.wf01.wt01.status,root.ln.wf01.wt01.temperature,"
                + "root.ln.wf02.wt02.hardware,root.ln.wf02.wt02.status,root.sgcc.wf03.wt01.status,"
                + "root.sgcc.wf03.wt01.temperature,", header.toString());
        Assert.assertEquals(Types.TIMESTAMP, resultSetMetaData.getColumnType(1));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(2));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(3));
        Assert.assertEquals(Types.VARCHAR, resultSetMetaData.getColumnType(4));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(5));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(6));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(7));

        int cnt = 0;
        while (resultSet.next()) {
          StringBuilder builder = new StringBuilder();
          for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
            builder.append(resultSet.getString(i)).append(",");
          }
          Assert.assertEquals(retArray[cnt], builder.toString());
          cnt++;
        }
        Assert.assertEquals(5, cnt);
      }
    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }

  @Test
  public void InTest() throws ClassNotFoundException {
    String[] retArray = new String[]{
        "1509465780000,false,20.18,v1,false,false,20.18,",
        "1509465840000,false,21.13,v1,false,false,21.13,",
        "1509465900000,false,22.72,v1,false,false,22.72,",
        "1509465960000,false,20.71,v1,false,false,20.71,",
        "1509466020000,false,21.45,v1,false,false,21.45,",
    };

    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()) {

      // test 1: fetchSize < limitNumber
      statement.setFetchSize(4);
      Assert.assertEquals(4, statement.getFetchSize());
      boolean hasResultSet = statement.execute("select * from root where time in (1509465780000, 1509465840000, 1509465900000, 1509465960000, 1509466020000)");
      Assert.assertTrue(hasResultSet);
      try (ResultSet resultSet = statement.getResultSet()) {
        ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
        StringBuilder header = new StringBuilder();
        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
          header.append(resultSetMetaData.getColumnName(i)).append(",");
        }
        Assert.assertEquals(
            "Time,root.ln.wf01.wt01.status,root.ln.wf01.wt01.temperature,"
                + "root.ln.wf02.wt02.hardware,root.ln.wf02.wt02.status,root.sgcc.wf03.wt01.status,"
                + "root.sgcc.wf03.wt01.temperature,", header.toString());
        Assert.assertEquals(Types.TIMESTAMP, resultSetMetaData.getColumnType(1));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(2));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(3));
        Assert.assertEquals(Types.VARCHAR, resultSetMetaData.getColumnType(4));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(5));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(6));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(7));

        int cnt = 0;
        while (resultSet.next()) {
          StringBuilder builder = new StringBuilder();
          for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
            builder.append(resultSet.getString(i)).append(",");
          }
          Assert.assertEquals(retArray[cnt], builder.toString());
          cnt++;
        }
        Assert.assertEquals(5, cnt);
      }

      retArray = new String[]{
          "1509465600000,true,25.96,v2,true,true,25.96,",
          "1509465660000,true,24.36,v2,true,true,24.36,",
          "1509465720000,false,20.09,v1,false,false,20.09,",
          "1509466080000,false,22.58,v1,false,false,22.58,",
          "1509466140000,false,20.98,v1,false,false,20.98,",
      };
      hasResultSet = statement.execute("select * from root where time not in (1509465780000, 1509465840000, 1509465900000, 1509465960000, 1509466020000)");
      Assert.assertTrue(hasResultSet);
      try (ResultSet resultSet = statement.getResultSet()) {
        ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
        StringBuilder header = new StringBuilder();
        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
          header.append(resultSetMetaData.getColumnName(i)).append(",");
        }
        Assert.assertEquals(
            "Time,root.ln.wf01.wt01.status,root.ln.wf01.wt01.temperature,"
                + "root.ln.wf02.wt02.hardware,root.ln.wf02.wt02.status,root.sgcc.wf03.wt01.status,"
                + "root.sgcc.wf03.wt01.temperature,", header.toString());
        Assert.assertEquals(Types.TIMESTAMP, resultSetMetaData.getColumnType(1));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(2));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(3));
        Assert.assertEquals(Types.VARCHAR, resultSetMetaData.getColumnType(4));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(5));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(6));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(7));

        int cnt = 0;
        while (resultSet.next()) {
          StringBuilder builder = new StringBuilder();
          for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
            builder.append(resultSet.getString(i)).append(",");
          }
          Assert.assertEquals(retArray[cnt], builder.toString());
          cnt++;
        }
        Assert.assertEquals(5, cnt);
      }

      retArray = new String[]{
          "1509465780000,false,20.18,v1,false,false,20.18,",
          "1509465960000,false,20.71,v1,false,false,20.71,",
          "1509466080000,false,22.58,v1,false,false,22.58,",
      };
      hasResultSet = statement.execute("select * from root where ln.wf01.wt01.temperature in (20.18, 20.71, 22.58)");
      Assert.assertTrue(hasResultSet);
      try (ResultSet resultSet = statement.getResultSet()) {
        ResultSetMetaData resultSetMetaData = resultSet.getMetaData();
        StringBuilder header = new StringBuilder();
        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
          header.append(resultSetMetaData.getColumnName(i)).append(",");
        }
        Assert.assertEquals(
            "Time,root.ln.wf01.wt01.status,root.ln.wf01.wt01.temperature,"
                + "root.ln.wf02.wt02.hardware,root.ln.wf02.wt02.status,root.sgcc.wf03.wt01.status,"
                + "root.sgcc.wf03.wt01.temperature,", header.toString());
        Assert.assertEquals(Types.TIMESTAMP, resultSetMetaData.getColumnType(1));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(2));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(3));
        Assert.assertEquals(Types.VARCHAR, resultSetMetaData.getColumnType(4));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(5));
        Assert.assertEquals(Types.BOOLEAN, resultSetMetaData.getColumnType(6));
        Assert.assertEquals(Types.FLOAT, resultSetMetaData.getColumnType(7));

        int cnt = 0;
        while (resultSet.next()) {
          StringBuilder builder = new StringBuilder();
          for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {
            builder.append(resultSet.getString(i)).append(",");
          }
          Assert.assertEquals(retArray[cnt], builder.toString());
          cnt++;
        }
        Assert.assertEquals(3, cnt);
      }
    } catch (Exception e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }


}
