/*
    * Copyright (c) 2002-2025 Gargoyle Software Inc.
    *
    * Licensed 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
    * https://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.htmlunit.libraries;
  
  import java.net.URL;
  import java.time.Duration;
  
  import org.eclipse.jetty.server.Server;
  import org.htmlunit.WebDriverTestCase;
  import org.htmlunit.WebServerTestCase;
  import org.htmlunit.junit.BrowserRunner;
  import org.htmlunit.junit.annotation.Alerts;
  import org.htmlunit.junit.annotation.NotYetImplemented;
  import org.junit.AfterClass;
  import org.junit.Assert;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.openqa.selenium.By;
  import org.openqa.selenium.WebDriver;
  import org.openqa.selenium.WebElement;
  
  /**
   * Tests for html2canvas.
   *
   * @author Ronald Brill
   */
  @RunWith(BrowserRunner.class)
  public class Html2CanvasTest extends WebDriverTestCase {
  
      /** The server. */
      protected static Server SERVER_;
  
      /**
       * @throws Exception if an error occurs
       */
      @BeforeClass
      public static void startSesrver() throws Exception {
          SERVER_ = WebServerTestCase.createWebServer("src/test/resources/libraries/html2canvas/", null);
      }
  
      /**
       * @throws Exception if an error occurs
       */
      @AfterClass
      public static void stopServer() throws Exception {
          if (SERVER_ != null) {
              SERVER_.stop();
              SERVER_.destroy();
              SERVER_ = null;
          }
      }
  
      /**
       * @return the resource base URL
       */
      protected URL getBaseUrl() {
          return URL_FIRST;
      }
  
      /**
       * @throws Exception if the test fails
       */
      @Test
      @Alerts("data:image/png;base64")
      @NotYetImplemented
      public void helloWorld() throws Exception {
          // this does not produce an image in html unit so far
          // have added this test to not forget it
          doTest("html2canvas.html");
      }
  
      private void doTest(final String filename) throws Exception {
          final WebDriver driver = getWebDriver();
  
          driver.get(getBaseUrl() + filename);
          driver.findElement(By.id("printButtonId")).click();
  
          // verifyTextArea2(driver, getExpectedAlerts());
  
          final WebElement textArea = driver.findElement(By.id("myLog"));
          verify(DEFAULT_WAIT_TIME, textArea);
      }
  
      private static void verify(final Duration maxWaitTime, final WebElement textArea) throws Exception {
          final long maxWait = System.currentTimeMillis() + maxWaitTime.toMillis();
  
         String value = "";
         while (System.currentTimeMillis() < maxWait) {
             value = textArea.getDomProperty("value");
             if (value != null && value.startsWith("data:image/png;base64,")) {
                 break;
             }
 
             Thread.sleep(50);
         }
 
         Assert.assertTrue("'" + value + "' does not start with 'data:image/png;base64'",
                             value.startsWith("data:image/png;base64,"));
     }
 }