package azkaban.test.database;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.io.FileUtils;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

import azkaban.database.AzkabanDatabaseSetup;
import azkaban.database.DataSourceUtils;
import azkaban.utils.Props;

public class AzkabanDatabaseSetupTest {
  @BeforeClass
  public static void setupDB() throws IOException, SQLException {
    File dbDir = new File("h2dbtest");
    if (dbDir.exists()) {
      FileUtils.deleteDirectory(dbDir);
    }

    dbDir.mkdir();

    clearUnitTestDB();
  }

  @AfterClass
  public static void teardownDB() {
  }

  @Test
  public void testH2Query() throws Exception {
    Props h2Props = getH2Props();
    AzkabanDatabaseSetup setup = new AzkabanDatabaseSetup(h2Props);

    // First time will create the tables
    setup.loadTableInfo();
    setup.printUpgradePlan();
    setup.updateDatabase(true, true);
    Assert.assertTrue(setup.needsUpdating());

    // Second time will update some tables. This is only for testing purpose and
    // obviously we
    // wouldn't set things up this way.
    setup.loadTableInfo();
    setup.printUpgradePlan();
    setup.updateDatabase(true, true);
    Assert.assertTrue(setup.needsUpdating());

    // Nothing to be done
    setup.loadTableInfo();
    setup.printUpgradePlan();
    Assert.assertFalse(setup.needsUpdating());
  }

  @Test
  public void testMySQLQuery() throws Exception {
    Props mysqlProps = getMySQLProps();
    AzkabanDatabaseSetup setup = new AzkabanDatabaseSetup(mysqlProps);

    // First time will create the tables
    setup.loadTableInfo();
    setup.printUpgradePlan();
    setup.updateDatabase(true, true);
    Assert.assertTrue(setup.needsUpdating());

    // Second time will update some tables. This is only for testing purpose and
    // obviously we
    // wouldn't set things up this way.
    setup.loadTableInfo();
    setup.printUpgradePlan();
    setup.updateDatabase(true, true);
    Assert.assertTrue(setup.needsUpdating());

    // Nothing to be done
    setup.loadTableInfo();
    setup.printUpgradePlan();
    Assert.assertFalse(setup.needsUpdating());
  }

  private static Props getH2Props() {
    Props props = new Props();
    props.put("database.type", "h2");
    props.put("h2.path", "h2dbtest/h2db");
    props.put("database.sql.scripts.dir", "unit/sql");

    return props;
  }

  private static Props getMySQLProps() {
    Props props = new Props();

    props.put("database.type", "mysql");
    props.put("mysql.port", "3306");
    props.put("mysql.host", "localhost");
    props.put("mysql.database", "azkabanunittest");
    props.put("mysql.user", "root");
    props.put("database.sql.scripts.dir", "unit/sql");
    props.put("mysql.password", "");
    props.put("mysql.numconnections", 10);

    return props;
  }

  private static void clearUnitTestDB() throws SQLException {
    Props props = new Props();

    props.put("database.type", "mysql");
    props.put("mysql.host", "localhost");
    props.put("mysql.port", "3306");
    props.put("mysql.database", "");
    props.put("mysql.user", "root");
    props.put("mysql.password", "");
    props.put("mysql.numconnections", 10);

    DataSource datasource = DataSourceUtils.getDataSource(props);
    QueryRunner runner = new QueryRunner(datasource);
    try {
      runner.update("drop database azkabanunittest");
    } catch (SQLException e) {
    }
    runner.update("create database azkabanunittest");
  }
}