/**
    * Copyright 2005-2015 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.testtools.selenium;
  
  import com.saucelabs.common.SauceOnDemandAuthentication;
  import com.saucelabs.common.SauceOnDemandSessionIdProvider;
  import com.saucelabs.junit.SauceOnDemandTestWatcher;
  import com.saucelabs.saucerest.SauceREST;
  import org.junit.Assert;
  import org.openqa.selenium.Platform;
  import org.openqa.selenium.WebDriver;
  import org.openqa.selenium.ie.InternetExplorerDriver;
  import org.openqa.selenium.remote.DesiredCapabilities;
  import org.openqa.selenium.remote.RemoteWebDriver;
  
  import java.io.BufferedWriter;
  import java.io.File;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.net.URL;
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * <p>
   * Helper class for {@link org.openqa.selenium.remote.RemoteWebDriver} when writing Selenium tests making use of Saucelabs
   * or <a href="http://saucelabs.com/ondemand">Sauce OnDemand</a>.
   * </p><p>
   * Saucelabs properties need to be set as JVM arguments.  See the SAUCE_ Constants defined below.  Required <b>saucelabs</b>
   * parameters are: {@see #REMOTE_DRIVER_SAUCELABS_PROPERTY} (master use saucelabs flag), {@see #SAUCE_USER_PROPERTY},
   * {@see #SAUCE_KEY_PROPERTY}, {@see #SAUCE_VERSION_PROPERTY}.
   * </p><p>
   * An example:
   * <pre>{@code
   * -Dremote.public.url=env14.rice.kuali.org -Dremote.driver.saucelabs -Dsaucelabs.user=YOUR-SAUCELABS-USER
   * -Dsaucelabs.key=YOUR-SAUCELABS-KEY -Dsaucelabs.browser.version=31 -Dsaucelabs.platform=Linux -Dsaucelabs.browser=ff
   * -Dremote.public.user=admin -Drice.version=48058
   * }</pre>
   * </p><p>
   * To make use of SauceLabsWebDriverHelper, call its {@see #setUp} with the Test Class and Test Name and retrieve the configured
   * WebDriver using {@see #getDriver}  You'll also need to call {@see #getSessionId} which you'll pass into the {@see #tearDown}
   * (along with the tests passed state).
   * </p><p>
   * In your test setUp:
   * </p><p>
   * <pre>
   * {@code
   * SauceLabsWebDriverHelper saucelabs = new SauceLabsWebDriverHelper();
   * saucelabs.setUp(className, testName);
   * driver = saucelabs.getDriver();
   * }
   * </pre>
   * </p><p>
   * In your test tearDown:
   * <pre>
   * {@code
   * SauceLabsWebDriverHelper.tearDown(passed, sessionId);
   * }
   * </pre>
   * </p><p>
   * Also includes the <a href="">Sauce JUnit</a> helper classes, which will use the Sauce REST API to mark the
   * Sauce Job as passed/failed.
   * </p><p>
   * In order to use {@link SauceOnDemandTestWatcher} the {@link SauceOnDemandSessionIdProvider} interface is implemented.
   * </p>
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class SauceLabsWebDriverHelper implements SauceOnDemandSessionIdProvider {
  
      /**
       * <p>
       * Use Saucelabs flag, <b>required</b>.
       * </p><p>
       * For ease of disabling saucelabs without having to remove other saucelabs property settings, if not present saucelabs
       * will not be used.
       * </p><p>
       * -Dremote.driver.saucelabs
       * </p>
       */
      public static final String REMOTE_DRIVER_SAUCELABS_PROPERTY = "remote.driver.saucelabs";
  
      /**
       * <p>
       * Saucelabs browser, default is Firefox.
       * </p><p>
       * See <a href="https://saucelabs.com/docs/platforms">Saucelabs Resources</a>
      * <ul>
      * <li>ff = Firefox</li>
      * <li>ie = Internet Explorer</li>
      * <li>chrome = Google Chrome</li>
      * <li>opera = Opera</li>
      * <li>android = Android</li>
      * <li>safari = Safari</li>
      * <li>ipad = IPad</li>
      * <li>iphone = IPhone</li>
      * </ul></p><p>
      * -Dsaucelabs.browser=
      * <p>
      */
     public static final String SAUCE_BROWSER_PROPERTY = "saucelabs.browser";
 
     /**
      * <p>
      * Suacelabs build displayed as saucelabs build, default is unknown.
      * </p><p>
      * -Drice.version=
      * </p>
      */
     public static final String SAUCE_BUILD_PROPERTY = "rice.version";
 
     /**
      * <p>
      * Create a unix shell script to download saucelab resources, default is false.
      * </p><p>
      * Note - saucelabs history only goes back so far, if you run enough tests the resources will no longer
      * be available for downloading.
      * </p><p>
      * -Dsaucelabs.download.script=false
      * </p>
      */
     public static final String SAUCE_DOWNLOAD_SCRIPT_PROPERTY = "saucelabs.download.scripts";
 
     /**
      * <p>
      * Saucelabs idle timeout in seconds, default is 180.
      * </p><p>
      * -Dsaucelabs.idle.timeout.seconds=
      * </p>
      */
     public static final String SAUCE_IDLE_TIMEOUT_SECONDS_PROPERTY = "saucelabs.idle.timeout.seconds";
 
     /**
      * <p>
      * Saucelabs key, <b>required</b>.
      * </p><p>
      * -Dsaucelabs.key=
      * </p>
      */
     public static final String SAUCE_KEY_PROPERTY = "saucelabs.key";
 
     /**
      * <p>
      * Saucelabs max duration in seconds, default is 480.
      * </p><p>
      * -Dsaucelabs.max.duration.seconds=
      * </p>
      */
     public static final String SAUCE_MAX_DURATION_SECONDS_PROPERTY = "saucelabs.max.duration.seconds";
 
     /**
      * <p>
      * Saucelabs platform (OS) replace spaces with underscores, default is Linux.
      * </p><p>
      * See <a href="https://saucelabs.com/docs/platforms">Saucelabs Resources</a>
      * </p><p>
      * -Dsaucelabs.platform=
      * </p>
      */
     public static final String SAUCE_PLATFORM_PROPERTY = "saucelabs.platform";
 
     /**
      * <p>
      * Saucelabs ignore security domains in IE, which can introduce flakiness, default is true.
      * </p><p>
      * See <a href="http://code.google.com/p/selenium/wiki/FrequentlyAskedQuestions#Q:_The_does_not_work_well_on_Vista._How_do_I_get_it_to_work_as_e">InternetExplorerDriver FAQ</a>
      * </p><p>
      * -Dsaucelabs.ie.ignore.domains=false
      * </p>
      */
     public static final String SAUCE_IE_INTRODUCE_FLAKINESS_BY_IGNORING_SECURITY_DOMAINS_PROPERTY = "saucelabs.ie.ignore.domains";
 
     /**
      * <p>
      * Saucelabs popup disable setting, default is false (not disabled).
      * </p><p>
      * See <a href="https://saucelabs.com/docs/additional-config#disable-popup-handler">DISABLE POPUP HANDLER</a>
      * </p><p>
      * -Dsaucelabs.pop.disable=
      * </p>
      */
     public static final String SAUCE_POPUP_PROPERTY = "saucelabs.pop.disable";
 
     /**
      * <p>
      * Saucelabs share setting, default is public restricted.
      * </p><p>
      * See <a href="https://saucelabs.com/docs/additional-config#sharing">Job Sharing</a>.  Valid values are: public, public restricted, team, share, and private.
      * </p><p>
      * -Dsaucelabs.share=
      * </p>
      */
     public static final String SAUCE_SHARE_PROPERTY = "saucelabs.share";
 
     /**
      * <p>
      * Saucelabs user, <b>required</b>.
      * </p><p>
      * -Dsaucelabs.user=
      * </p>
      */
     public static final String SAUCE_USER_PROPERTY = "saucelabs.user";
 
     /**
      * <p>
      * Saucelabs browser Version, <b>required</b>.
      * </p><p>
      * See <a href="https://saucelabs.com/docs/platforms">Saucelabs Resources</a> 0 or null is current version of <b>Chrome</b>.
      * If using a browser other than Chrome this must be set else an Exception will be thrown.
      * </p><p>
      * -Dsaucelabs.version=
      * </p>
      */
     public static final String SAUCE_VERSION_PROPERTY = "saucelabs.browser.version";
 
     /**
      * <p>
      * Saucelabs REST API delay in milliseconds, default is 5000.
      * </p><p>
      * -Dsaucelabs.rest.api.delay.ms=
      * </p>
      */
     public static final String SAUCE_REST_API_DELAY_MS = "saucelabs.rest.api.delay.ms";
 
     /**
      * <p>
      * Constructs a {@link SauceOnDemandAuthentication} instance using the supplied user name/access key.
      * </p><p>
      * To use the authentication supplied by environment variables or from an external file, use the no-arg
      * {@link SauceOnDemandAuthentication} constructor.
      * </p><p>
      * {@see #SAUCE_USER_PROPERTY} {@see #SAUCE_KEY_PROPERTY}
      * </p>
      */
     public SauceOnDemandAuthentication authentication = new SauceOnDemandAuthentication(System.getProperty(SAUCE_USER_PROPERTY), System.getProperty(SAUCE_KEY_PROPERTY));
 
     private WebDriver driver;
 
     private String sessionId;
 
     /**
      * <p>
      * Saucelabs setUp.
      * </p><p>
      * Creates a {@link org.openqa.selenium.remote.RemoteWebDriver} instance with the DesiredCapabilities as configured
      * using the JVM arguments described as SAUCE_ Constants in this class.  After setUp the WebDriver can be accessed via
      * {@see #getDriver}.  You'll also need {@see #getSessionId} for when you call {@see #tearDown}
      * </p>
      *
      * @param className class name of the test being setup as a String
      * @param testName test name of the test being setup as a String
      * @throws Exception
      */
     public void setUp(String className, String testName) throws Exception {
         if (System.getProperty(REMOTE_DRIVER_SAUCELABS_PROPERTY) == null) { // dup guard so WebDriverUtils doesn't have to be used.
             return;
         }
 
         if (System.getProperty(SAUCE_USER_PROPERTY) == null || System.getProperty(SAUCE_KEY_PROPERTY) == null) {
             Assert.fail("-D" + SAUCE_USER_PROPERTY + " and -D" + SAUCE_KEY_PROPERTY + " must be set to saucelabs user and access key.");
         }
 
         DesiredCapabilities capabilities = null;
         if ("ff".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY))) {
             capabilities = DesiredCapabilities.firefox();
         } else if ("ie".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.internetExplorer();
             capabilities.setCapability(InternetExplorerDriver.INTRODUCE_FLAKINESS_BY_IGNORING_SECURITY_DOMAINS,
                 System.getProperty(SAUCE_IE_INTRODUCE_FLAKINESS_BY_IGNORING_SECURITY_DOMAINS_PROPERTY, "true"));
         } else if ("chrome".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.chrome();
         } else if ("opera".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.opera();
         } else if ("android".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.android();
         } else if ("safari".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.safari();
         } else if ("ipad".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.ipad();
         } else if ("iphone".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY)))  {
             capabilities = DesiredCapabilities.iphone();
         } else {
             capabilities = DesiredCapabilities.firefox();
         }
 
         String version = System.getProperty(SAUCE_VERSION_PROPERTY);
         if (version == null || "0".equals(version)) { // Blank or 0 leaves version blank for use with chrome
 
             if (!"chrome".equalsIgnoreCase(System.getProperty(SAUCE_BROWSER_PROPERTY))) {
                 throw new RuntimeException("Blank or 0 version for a browser not chrome " + System.getProperty(SAUCE_BROWSER_PROPERTY));
             }
 
             capabilities.setCapability("version", ""); // saucelabs requires blank for chrome (latest version)
         } else {
             capabilities.setCapability("version", version); // saucelabs requires blank for chrome (latest version)
         }
 
         capabilities.setCapability("platform", System.getProperty(SAUCE_PLATFORM_PROPERTY, Platform.UNIX.toString()).replaceAll("_", " "));
         capabilities.setCapability("idle-timeout", Integer.parseInt(System.getProperty(SAUCE_IDLE_TIMEOUT_SECONDS_PROPERTY, "180")));
         capabilities.setCapability("max-duration", Integer.parseInt(System.getProperty(SAUCE_MAX_DURATION_SECONDS_PROPERTY, "600")));
         capabilities.setCapability("name",  className + "." + testName + "-" + AutomatedFunctionalTestUtils.DTS);
         capabilities.setCapability("disable-popup-handler", System.getProperty(SAUCE_POPUP_PROPERTY, "false"));
         capabilities.setCapability("public", System.getProperty(SAUCE_SHARE_PROPERTY, "public restricted"));
 
         System.out.println("Requesting Saucelabs RemoteWebDriver with DesiredCapabilities of " + capabilities.toString());
 
         this.driver = new RemoteWebDriver(
                 new URL("http://" + authentication.getUsername() + ":" + authentication.getAccessKey() + "@ondemand.saucelabs.com:80/wd/hub"),
                 capabilities);
         this.sessionId = ((RemoteWebDriver)driver).getSessionId().toString();
 
         System.out.println("SauceLabs job can be viewed at https://saucelabs.com/jobs/" + this.sessionId);
     }
 
     private void downloadResults(String className, String testName) {
         if ("true".equals(System.getProperty(SAUCE_DOWNLOAD_SCRIPT_PROPERTY, "false"))) {
             try {
                 String dir = determineSaveDir(className, testName);
                 String resources = "mkdir " + dir + " ; cd " + dir + " ; \n"
                         + curlSaveResourceString(className, testName, "selenium-server.log") + " ; \n"
                         + curlSaveResourceString(className, testName, "video.flv") + " ; \n"
                         //                    + wgetnSaveResourceString(className, testName) + " ; \n"
                         + "cd ../\n";
                 System.out.println(resources);
                 writeFile("SauceLabsResources" + dir + ".sh", resources);
 
 //                downloadResource(dir, "selenium-server.log");
 //                downloadResource(dir, "video.flv");
             } catch (Exception e) {
                 System.out.println("Exception while writing SauceLabsResources.sh " + e.getMessage());
                 System.out.println(curlSaveResourceString(className, testName, "selenium-server.log"));
                 System.out.println(curlSaveResourceString(className, testName, "video.flv"));
                 //          System.out.println(curlSaveResourceString(className, testName, "XXXXscreenshot.png (where XXXX is a number between 0000 and 9999)")); // TODO
             }
         }
     }
 
     /* the curl command works, this doesn't, what's wrong?
     private void downloadResource(String dir, String resource) throws IOException {
         File file = new File(dir + resource);
         if(!file.exists()) {
             file.createNewFile();
         }
         FileOutputStream fileOutputStream = new FileOutputStream(file);
         CloseableHttpClient httpclient = HttpClients.custom().build();
         try {
             String userCredentials = "username:password";
             String basicAuth = "Basic " + new String(new Base64().encode(userCredentials.getBytes()));
             HttpGet httpget = new HttpGet(resourceUrl(resource));
             httpget.setHeader("Authorization", basicAuth);
             httpget.setHeader("Content-Type", "text/html");
             CloseableHttpResponse response = httpclient.execute(httpget);
             try {
                 fileOutputStream.write(EntityUtils.toByteArray(response.getEntity()));
                 fileOutputStream.close();
             } finally {
                 response.close();
             }
         } finally {
             httpclient.close();
         }
     }
     */
 
     /**
      * <p>
      * Saucelabs tearDown, flag the tests as passed or failed.
      * </p><p>
      * Uses the SauceREST API to register a test as passed or failed.  {@see #SAUCE_REST_API_DELAY_MS}
      * </p>
      *
      * @param passed true if passed, falsed if failed, as a boolean
      * @param sessionId saucelabs test session id, as a String
      * @throws Exception
      */
     public void tearDown(boolean passed, String sessionId, String className, String testName) throws Exception {
         if (sessionId != null && System.getProperty(REMOTE_DRIVER_SAUCELABS_PROPERTY) != null) { // dup guard so WebDriverUtils doesn't have to be used
             SauceREST client = new SauceREST(System.getProperty(SauceLabsWebDriverHelper.SAUCE_USER_PROPERTY),
                     System.getProperty(SauceLabsWebDriverHelper.SAUCE_KEY_PROPERTY));
             /* Using a map of udpates:
             * (http://saucelabs.com/docs/sauce-ondemand#alternative-annotation-methods)
             */
             Map<String, Object> updates = new HashMap<String, Object>();
             updates.put("passed", passed);
             updates.put("build", System.getProperty(SAUCE_BUILD_PROPERTY, "unknown"));
             client.updateJobInfo(sessionId, updates);
 
             if (passed) {
                 client.jobPassed(sessionId);
             } else {
                 client.jobFailed(sessionId);
             }
 
             // give the client message a chance to get processed on saucelabs side
             Thread.sleep(Integer.parseInt(System.getProperty(SAUCE_REST_API_DELAY_MS, "5000")));
 
             downloadResults(className, testName);
         }
     }
 
     private String curlSaveResourceString(String className, String testName, String resource) {
         return "curl -o " + deriveResourceBaseNames(className, testName, resource) + " -u " + authentication
                 .getUsername() + ":" + authentication.getAccessKey() + " " + resourceUrl(resource);
     }
 
     private String resourceUrl(String resource) {
         return "http://saucelabs.com/rest/" + authentication.getUsername() + "/jobs/" + sessionId + "/results/" + resource;
     }
 
     private String deriveResourceBaseNames(String className, String testName, String resource) {
         return className + "." + testName + "-"
                 + System.getProperty(SAUCE_PLATFORM_PROPERTY, Platform.UNIX.toString()) + "-"
                 + System.getProperty(SAUCE_BROWSER_PROPERTY) + "-"
                 + System.getProperty(SAUCE_VERSION_PROPERTY) + "-"
                 + System.getProperty(WebDriverUtils.REMOTE_PUBLIC_USER_PROPERTY, "admin") + "-"
                 + System.getProperty(SAUCE_BUILD_PROPERTY, "unknown_build") + "-"
                 + AutomatedFunctionalTestUtils.DTS + "-"
                 + resource;
     }
 
     /**
      * <p>
      * Returns the (RemoteWebDriver) driver.
      * </p>
      *
      * @return WebDriver
      */
     public WebDriver getDriver() {
         return driver;
     }
 
     @Override
     public String getSessionId() {
         return sessionId;
     }
 
     // Seems like sceenshot downloading has changed, this doesn't work anymore
     private String wgetnSaveResourceString(String className, String testName) {
         String dir = determineSaveDir(className, testName);
         // http://www.jwz.org/hacks/wgetn
         return "wgetn https://saucelabs.com/" + sessionId + "/%04dscreenshot.png 0 50";
     }
 
     private String determineSaveDir(String className, String testName) {
         String dir = deriveResourceBaseNames(className, testName, "");
         dir = dir.substring(0, dir.length() -1);
         return dir;
     }
 
     private void writeFile(String fileName, String content) throws IOException {
         File file = new File(fileName);
 
         if (!file.exists()) {
             file.createNewFile();
         }
 
         FileWriter fw = new FileWriter(file.getAbsoluteFile());
         BufferedWriter bw = new BufferedWriter(fw);
         bw.write(content);
         bw.flush();
         bw.close();
     }
 }