/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.access.db;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import ch.qos.logback.access.spi.IAccessEvent;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

import ch.qos.logback.access.dummy.DummyRequest;
import ch.qos.logback.access.dummy.DummyResponse;
import ch.qos.logback.access.dummy.DummyServerAdapter;
import ch.qos.logback.access.spi.AccessContext;
import ch.qos.logback.access.spi.AccessEvent;
import ch.qos.logback.core.db.DriverManagerConnectionSource;
import ch.qos.logback.core.util.StatusPrinter;

public class DBAppenderHSQLTest {
  static DBAppenderHSQLTestFixture DB_APPENDER_HSQL_TEST_FIXTURE;


  AccessContext context;
  DBAppender appender;
  DriverManagerConnectionSource connectionSource;

  int existingEventTableRowCount;
  Statement stmt;

  @BeforeClass
  static public void fixtureSetUp() throws SQLException {
    DB_APPENDER_HSQL_TEST_FIXTURE = new DBAppenderHSQLTestFixture();
    DB_APPENDER_HSQL_TEST_FIXTURE.setUp();
  }

  @AfterClass
  static public void fixtureTearDown() throws SQLException {
    DB_APPENDER_HSQL_TEST_FIXTURE.tearDown();
  }

  @Before
  public void setUp() throws SQLException {
    context = new AccessContext();
    context.setName("default");
    appender = new DBAppender();
    appender.setName("DB");
    appender.setContext(context);
    connectionSource = new DriverManagerConnectionSource();
    connectionSource.setContext(context);
    connectionSource.setDriverClass(DBAppenderHSQLTestFixture.DRIVER_CLASS);
    connectionSource.setUrl(DB_APPENDER_HSQL_TEST_FIXTURE.url);
    connectionSource.setUser(DB_APPENDER_HSQL_TEST_FIXTURE.user);
    connectionSource.setPassword(DB_APPENDER_HSQL_TEST_FIXTURE.password);
    connectionSource.start();
    appender.setConnectionSource(connectionSource);

    stmt = connectionSource.getConnection().createStatement();
    existingEventTableRowCount = existingEventTableRowCount(stmt);
  }

  @After
  public void tearDown() throws SQLException {
    context = null;
    appender = null;
    connectionSource = null;
    stmt.close();
  }

  int existingEventTableRowCount(Statement stmt) throws SQLException {
    ResultSet rs = stmt.executeQuery("SELECT count(*) FROM access_event");
    int result = -1;
    if (rs.next()) {
      result = rs.getInt(1);
    }
    rs.close();
    return result;
  }

  private void setInsertHeadersAndStart(boolean insert) {
    appender.setInsertHeaders(insert);
    appender.start();
  }


  @Test
  public void testAppendAccessEvent() throws SQLException {
    setInsertHeadersAndStart(false);

    IAccessEvent event = createAccessEvent();
    appender.append(event);

    Statement stmt = connectionSource.getConnection().createStatement();
    ResultSet rs = null;
    rs = stmt.executeQuery("SELECT * FROM access_event where EVENT_ID = " + existingEventTableRowCount);
    if (rs.next()) {
      assertEquals(event.getTimeStamp(), rs.getLong(1));
      assertEquals(event.getRequestURI(), rs.getString(2));
      assertEquals(event.getRequestURL(), rs.getString(3));
      assertEquals(event.getRemoteHost(), rs.getString(4));
      assertEquals(event.getRemoteUser(), rs.getString(5));
      assertEquals(event.getRemoteAddr(), rs.getString(6));
      assertEquals(event.getProtocol(), rs.getString(7));
      assertEquals(event.getMethod(), rs.getString(8));
      assertEquals(event.getServerName(), rs.getString(9));
      assertEquals(event.getRequestContent(), rs.getString(10));
    } else {
      fail("No row was inserted in the database");
    }
    rs.close();
    stmt.close();
  }


  @Test
  public void testCheckNoHeadersAreInserted() throws Exception {
    setInsertHeadersAndStart(false);

    IAccessEvent event = createAccessEvent();
    appender.append(event);
    StatusPrinter.print(context.getStatusManager());

    //Check that no headers were inserted
    Statement stmt = connectionSource.getConnection().createStatement();
    ResultSet rs = null;
    rs = stmt.executeQuery("SELECT * FROM access_event_header where EVENT_ID = " + existingEventTableRowCount);

    assertFalse(rs.next());
    rs.close();
    stmt.close();
  }

  @Test
  public void testAppendHeaders() throws SQLException {
    setInsertHeadersAndStart(true);

    IAccessEvent event = createAccessEvent();
    appender.append(event);

    Statement stmt = connectionSource.getConnection().createStatement();
    ResultSet rs = null;
    rs = stmt.executeQuery("SELECT * FROM access_event_header");
    String key;
    String value;
    if (!rs.next()) {
      fail("There should be results to this query");
    } else {
      key = rs.getString(2);
      value = rs.getString(3);
      assertNotNull(key);
      assertNotNull(value);
      assertEquals(event.getRequestHeader(key), value);
      rs.next();
      key = rs.getString(2);
      value = rs.getString(3);
      assertNotNull(key);
      assertNotNull(value);
      assertEquals(event.getRequestHeader(key), value);
    }
    if (rs.next()) {
      fail("There should be no more rows available");
    }

    rs.close();
    stmt.close();
  }

  @Test
  public void testAppendMultipleEvents() throws SQLException {
    setInsertHeadersAndStart(false);
    String uri = "testAppendMultipleEvents";
    for (int i = 0; i < 10; i++) {
      IAccessEvent event = createAccessEvent(uri);
      appender.append(event);
    }

    StatusPrinter.print(context);

    Statement stmt = connectionSource.getConnection().createStatement();
    ResultSet rs = null;
    rs = stmt.executeQuery("SELECT * FROM access_event where requestURI='" + uri + "'");
    int count = 0;
    while (rs.next()) {
      count++;
    }
    assertEquals(10, count);

    rs.close();
    stmt.close();
  }

  private IAccessEvent createAccessEvent() {
    return createAccessEvent("");
  }

  private IAccessEvent createAccessEvent(String uri) {
    DummyRequest request = new DummyRequest();
    request.setRequestUri(uri);
    DummyResponse response = new DummyResponse();
    DummyServerAdapter adapter = new DummyServerAdapter(request, response);

    return new AccessEvent(request, response, adapter);
  }
}
