content: /*
   *  Copyright 2016-2024 Qameta 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
   *
   *      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 io.qameta.allure.core;
  
  import freemarker.template.Template;
  import io.qameta.allure.Constants;
  import io.qameta.allure.PluginConfiguration;
  import io.qameta.allure.ReportGenerationException;
  import io.qameta.allure.ReportStorage;
  import io.qameta.allure.context.FreemarkerContext;
  import org.apache.commons.io.FileUtils;
  import org.apache.commons.io.IOUtils;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.Writer;
  import java.nio.charset.StandardCharsets;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.nio.file.StandardCopyOption;
  import java.util.ArrayList;
  import java.util.Base64;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  
  /**
   * @author charlie (Dmitry Baev).
   */
  @SuppressWarnings("PMD.CognitiveComplexity")
  public class ReportWebGenerator {
  
      private static final String FAVICON_ICO = "favicon.ico";
      private static final String STYLES_CSS = "styles.css";
      private static final String APP_JS = "app.js";
  
      private static final String TEXT_JAVASCRIPT = "text/javascript";
      private static final String TEXT_CSS = "text/css";
  
      @SuppressWarnings({"ExecutableStatementCount", "PMD.NcssCount"})
      public void generate(final Configuration configuration,
                           final ReportStorage reportStorage,
                           final Path outputDirectory) {
  
          final boolean inline = reportStorage instanceof InMemoryReportStorage;
  
          final List<String> jsFiles = new ArrayList<>();
          if (inline) {
              jsFiles.add(dataBase64(TEXT_JAVASCRIPT, APP_JS));
          } else {
              jsFiles.add(APP_JS);
              write(outputDirectory, APP_JS, readResource(APP_JS));
          }
  
          final List<String> cssFiles = new ArrayList<>();
          if (inline) {
              cssFiles.add(dataBase64(TEXT_CSS, STYLES_CSS));
          } else {
              cssFiles.add(STYLES_CSS);
              write(outputDirectory, STYLES_CSS, readResource(STYLES_CSS));
          }
  
          configuration.getPlugins().forEach(plugin -> {
              final Map<String, Path> pluginFiles = new HashMap<>(plugin.getPluginFiles());
  
              final PluginConfiguration config = plugin.getConfig();
              config.getJsFiles().forEach(jsFile -> {
                  final Path jsFilePath = pluginFiles.remove(jsFile);
                  if (inline) {
                      jsFiles.add(dataBase64(
                              TEXT_JAVASCRIPT,
                              jsFilePath
                      ));
                  } else {
                      final String key = pluginFileKey(config, jsFile);
                      jsFiles.add(key);
                      write(outputDirectory, key, jsFilePath);
                  }
              });
  
              config.getCssFiles().forEach(cssFile -> {
                  final Path cssFilePath = pluginFiles.remove(cssFile);
                  if (inline) {
                      cssFiles.add(dataBase64(
                              TEXT_CSS,
                              cssFilePath
                      ));
                  } else {
                      final String key = pluginFileKey(config, cssFile);
                      cssFiles.add(key);
                      write(outputDirectory, key, cssFilePath);
                  }
              });
  
              pluginFiles.forEach((key, path) -> {
                  final String pluginFileKey = pluginFileKey(config, key);
                  write(outputDirectory,
                          pluginFileKey,
                          path
                  );
              });
          });
  
          final FreemarkerContext context = configuration.requireContext(FreemarkerContext.class);
  
          try (Writer writer = Files
                  .newBufferedWriter(
                          Files.createDirectories(outputDirectory).resolve("index.html"),
                          StandardCharsets.UTF_8
                  )) {
              final Template template = context.getValue().getTemplate("index.html.ftl");
              final Map<String, Object> dataModel = new HashMap<>();
  
  
              final String faviconUrl = inline ? dataBase64("image/x-icon", FAVICON_ICO) : FAVICON_ICO;
              if (!inline) {
                  write(outputDirectory, FAVICON_ICO, readResource(FAVICON_ICO));
              }
  
              dataModel.put("faviconUrl", faviconUrl);
              dataModel.put("stylesUrls", cssFiles);
              dataModel.put("jsUrls", jsFiles);
  
              if (inline) {
                  final Map<String, String> reportDataFiles = new HashMap<>(((InMemoryReportStorage) reportStorage)
                          .getReportDataFiles());
  
                  dataModel.put("reportDataFiles", reportDataFiles);
              }
  
              final boolean analyticsDisable = Optional.ofNullable(System.getenv(Constants.NO_ANALYTICS))
                      .map(Boolean::parseBoolean)
                      .orElse(false);
              dataModel.put("analyticsDisable", analyticsDisable);
  
              dataModel.put("reportUuid", configuration.getUuid());
              dataModel.put("reportName", configuration.getReportName());
              dataModel.put("reportLanguage", configuration.getReportLanguage());
              dataModel.put("allureVersion", configuration.getVersion());
  
              template.process(dataModel, writer);
          } catch (Exception e) {
              throw new ReportGenerationException("could not generate report web", e);
          }
      }
  
      private static String pluginFileKey(final PluginConfiguration config, final String cssFile) {
          return "plugin/" + config.getId() + "/" + cssFile;
      }
  
      private static byte[] readResource(final String resourceName) {
          try (InputStream is = Thread.currentThread()
                  .getContextClassLoader().getResourceAsStream(resourceName)) {
              if (Objects.isNull(is)) {
                  throw new ReportGenerationException(
                          String.format("Resource %s not found", resourceName));
              }
              return IOUtils.toByteArray(is);
          } catch (IOException e) {
              throw new ReportGenerationException("Can't read resource " + resourceName, e);
          }
      }
  
      private static String dataBase64(final String contentType, final String resourceName) {
          final byte[] resource = readResource(resourceName);
          return dataUrl(contentType, resource);
      }
  
      private static String dataBase64(final String contentType, final Path path) {
          try {
              final byte[] bytes = FileUtils.readFileToByteArray(path.toFile());
              return dataUrl(contentType, bytes);
          } catch (IOException e) {
              throw new ReportGenerationException("Can't read file " + path, e);
          }
      }
  
      private static String dataUrl(final String contentType, final byte[] resource) {
          return String.format(
                  "data:%s;base64,%s", contentType,
                  Base64.getEncoder().encodeToString(resource)
          );
      }
  
      private static void write(final Path outputDirectory, final String name, final byte[] bytes) {
          try {
              final Path target = outputDirectory.resolve(name);
              Files.createDirectories(target.getParent());
              Files.write(target, bytes);
          } catch (IOException e) {
              throw new ReportGenerationException("Can't write bytes " + name, e);
          }
      }
  
      private static void write(final Path outputDirectory, final String name, final Path path) {
          try {
              final Path target = outputDirectory.resolve(name);
              Files.createDirectories(target.getParent());
              Files.copy(path, target, StandardCopyOption.REPLACE_EXISTING);
          } catch (IOException e) {
              throw new ReportGenerationException("Can't write file " + name, e);
          }
      }
  
  }
  