/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2020 wcm.io
    * %%
    * 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.
   * #L%
   */
  package io.wcm.devops.conga.plugins.aem.maven.allpackage;
  
  import static io.wcm.devops.conga.generator.util.FileUtil.getCanonicalPath;
  import static io.wcm.devops.conga.plugins.aem.maven.allpackage.RunModeUtil.RUNMODE_AUTHOR;
  import static io.wcm.devops.conga.plugins.aem.maven.allpackage.RunModeUtil.RUNMODE_PUBLISH;
  import static io.wcm.devops.conga.plugins.aem.maven.allpackage.RunModeUtil.eliminateAuthorPublishDuplicates;
  import static io.wcm.devops.conga.plugins.aem.maven.allpackage.RunModeUtil.isAuthorAndPublish;
  import static io.wcm.devops.conga.plugins.aem.maven.allpackage.RunModeUtil.isOnlyAuthor;
  import static io.wcm.devops.conga.plugins.aem.maven.allpackage.RunModeUtil.isOnlyPublish;
  import static org.apache.jackrabbit.vault.packaging.PackageProperties.NAME_DEPENDENCIES;
  import static org.apache.jackrabbit.vault.packaging.PackageProperties.NAME_NAME;
  import static org.apache.jackrabbit.vault.packaging.PackageProperties.NAME_PACKAGE_TYPE;
  import static org.apache.jackrabbit.vault.packaging.PackageProperties.NAME_VERSION;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Enumeration;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.Properties;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
  import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
  import org.apache.commons.compress.archivers.zip.ZipFile;
  import org.apache.commons.io.FileUtils;
  import org.apache.commons.io.FilenameUtils;
  import org.apache.commons.io.IOUtils;
  import org.apache.commons.lang3.StringUtils;
  import org.apache.jackrabbit.vault.packaging.Dependency;
  import org.apache.jackrabbit.vault.packaging.DependencyUtil;
  import org.apache.jackrabbit.vault.packaging.PackageType;
  import org.apache.jackrabbit.vault.packaging.VersionRange;
  import org.apache.maven.artifact.ArtifactUtils;
  import org.apache.maven.plugin.logging.Log;
  import org.apache.maven.plugin.logging.SystemStreamLog;
  import org.jetbrains.annotations.NotNull;
  import org.jetbrains.annotations.Nullable;
  
  import io.wcm.devops.conga.plugins.aem.maven.AutoDependenciesMode;
  import io.wcm.devops.conga.plugins.aem.maven.BuildOutputTimestamp;
  import io.wcm.devops.conga.plugins.aem.maven.PackageTypeValidation;
  import io.wcm.devops.conga.plugins.aem.maven.PackageVersionMode;
  import io.wcm.devops.conga.plugins.aem.maven.RunModeOptimization;
  import io.wcm.devops.conga.plugins.aem.maven.model.BundleFile;
  import io.wcm.devops.conga.plugins.aem.maven.model.ContentPackageFile;
  import io.wcm.devops.conga.plugins.aem.maven.model.InstallableFile;
  import io.wcm.tooling.commons.contentpackagebuilder.ContentPackage;
  import io.wcm.tooling.commons.contentpackagebuilder.ContentPackageBuilder;
  import io.wcm.tooling.commons.contentpackagebuilder.PackageFilter;
  
  /**
   * Builds "all" package based on given set of content packages.
   *
   * <p>
   * General concept:
   * </p>
   *
   * <ul>
   * <li>Iterates through all content packages that are generated or collected by CONGA and contained in the
   * model.json</li>
   * <li>Enforces the order defined in CONGA by automatically adding dependencies to all packages reflecting the file
   * order in model.json</li>
   * <li>Because the dependency chain may be different for each runmode (author/publish), each package is added once for
   * each runmode. Internally this separate dependency change for author and publish is optimized to have each package
   * included only once for author+publish, unless it has a different chain of dependencies for both runmodes, in which
   * case it is included separately for each run mode.</li>
   * <li>To avoid conflicts with duplicate packages with different dependency chains the names of packages that are
   * included in different versions for author/publish are changed and a runmode suffix (.author or .publish) is added,
   * and it is put in a corresponding install folder.</li>
  * <li>To avoid problems with nested sub packages, the sub packages are extracted from the packages and treated in the
  * same way as other packages.</li>
  * </ul>
  */
 public final class AllPackageBuilder {
 
   private final File targetFile;
   private final String groupName;
   private final String packageName;
   private String version;
   private AutoDependenciesMode autoDependenciesMode = AutoDependenciesMode.OFF;
   private RunModeOptimization runModeOptimization = RunModeOptimization.OFF;
   private PackageTypeValidation packageTypeValidation = PackageTypeValidation.STRICT;
   private PackageVersionMode packageVersionMode = PackageVersionMode.DEFAULT;
   private Log log;
   private BuildOutputTimestamp buildOutputTimestamp;
 
   private static final String RUNMODE_DEFAULT = "$default$";
   private static final Set<String> ALLOWED_PACKAGE_TYPES = Set.of(
       PackageType.APPLICATION.name().toLowerCase(),
       PackageType.CONTAINER.name().toLowerCase(),
       PackageType.CONTENT.name().toLowerCase());
   private static final String VERSION_SUFFIX_SEPARATOR = "-";
 
   private final List<ContentPackageFileSet> contentPackageFileSets = new ArrayList<>();
   private final List<BundleFileSet> bundleFileSets = new ArrayList<>();
 
   /**
    * @param targetFile Target file
    * @param groupName Group name
    * @param packageName Package name
    */
   public AllPackageBuilder(File targetFile, String groupName, String packageName) {
     this.targetFile = targetFile;
     this.groupName = groupName;
     this.packageName = packageName;
   }
 
   /**
    * @param value Automatically generate dependencies between content packages based on file order in CONGA
    *          configuration.
    * @return this
    */
   public AllPackageBuilder autoDependenciesMode(AutoDependenciesMode value) {
     this.autoDependenciesMode = value;
     return this;
   }
 
   /**
    * @param value Configure run mode optimization.
    * @return this
    */
   public AllPackageBuilder runModeOptimization(RunModeOptimization value) {
     this.runModeOptimization = value;
     return this;
   }
 
   /**
    * @param value How to validate package types to be included in "all" package.
    * @return this
    */
   public AllPackageBuilder packageTypeValidation(PackageTypeValidation value) {
     this.packageTypeValidation = value;
     return this;
   }
 
   /**
    * @param value How to handle versions of packages and sub-packages inside "all" package.
    * @return this
    */
   public AllPackageBuilder packageVersionMode(PackageVersionMode value) {
     this.packageVersionMode = value;
     return this;
   }
 
   /**
    * @param value Maven logger
    * @return this
    */
   public AllPackageBuilder logger(Log value) {
     this.log = value;
     return this;
   }
 
   /**
    * @param value Package version
    * @return this
    */
   public AllPackageBuilder version(String value) {
     this.version = value;
     return this;
   }
 
   /**
    * @param value Build output timestamp
    * @return this
    */
   public AllPackageBuilder buildOutputTimestamp(BuildOutputTimestamp value) {
     this.buildOutputTimestamp = value;
     return this;
   }
 
   private Log getLog() {
     if (this.log == null) {
       this.log = new SystemStreamLog();
     }
     return this.log;
   }
 
   /**
    * Add content packages and OSGi bundles to be contained in "all" content package.
    * @param files Content packages (invalid will be filtered out) and OSGi bundles
    * @param cloudManagerTarget Target environments/run modes the packages should be attached to
    * @throws IllegalArgumentException If and invalid package type is detected
    */
   public void add(List<InstallableFile> files, Set<String> cloudManagerTarget) {
     List<ContentPackageFile> contentPackages = filterFiles(files, ContentPackageFile.class);
 
     // collect list of cloud manager environment run modes
     List<String> environmentRunModes = new ArrayList<>();
     if (cloudManagerTarget.isEmpty()) {
       environmentRunModes.add(RUNMODE_DEFAULT);
     }
     else {
       environmentRunModes.addAll(cloudManagerTarget);
     }
 
     List<ContentPackageFile> validContentPackages;
     switch (packageTypeValidation) {
       case STRICT:
         validContentPackages = getValidContentPackagesStrictValidation(contentPackages);
         break;
       case WARN:
         validContentPackages = getValidContentPackagesWarnValidation(contentPackages);
         break;
       default:
         throw new IllegalArgumentException("Unsupported package type validation: " + packageTypeValidation);
     }
 
     if (!validContentPackages.isEmpty()) {
       contentPackageFileSets.add(new ContentPackageFileSet(validContentPackages, environmentRunModes));
     }
 
     // add OSGi bundles
     List<BundleFile> bundles = filterFiles(files, BundleFile.class);
     if (!bundles.isEmpty()) {
       bundleFileSets.add(new BundleFileSet(bundles, environmentRunModes));
     }
   }
 
   /**
    * Get valid content packages in strict mode: Ignore content packages without package type (with warning),
    * fail build if Content package with "mixed" mode is found.
    * @param contentPackages Content packages
    * @return Valid content packages
    */
   private List<ContentPackageFile> getValidContentPackagesStrictValidation(List<? extends ContentPackageFile> contentPackages) {
     // generate warning for each content packages without package type that is skipped
     contentPackages.stream()
         .filter(pkg -> !hasPackageType(pkg))
         .forEach(pkg -> getLog().warn("Skipping content package without package type: " + getCanonicalPath(pkg.getFile())));
 
     // fail build if content packages with non-allowed package types exist
     List<ContentPackageFile> invalidPackageTypeContentPackages = contentPackages.stream()
         .filter(AllPackageBuilder::hasPackageType)
         .filter(pkg -> !isValidPackageType(pkg))
         .collect(Collectors.toList());
     if (!invalidPackageTypeContentPackages.isEmpty()) {
       throw new IllegalArgumentException("Content packages found with unsupported package types: " +
           invalidPackageTypeContentPackages.stream()
               .map(pkg -> pkg.getName() + " -> " + pkg.getPackageType())
               .collect(Collectors.joining(", ")));
     }
 
     // collect AEM content packages with package type
     return contentPackages.stream()
         .filter(AllPackageBuilder::hasPackageType)
         .collect(Collectors.toList());
   }
 
   /**
    * Get all content packages, generate warnings if package type is missing or "mixed" mode package type is used.
    * @param contentPackages Content packages
    * @return Valid content packages
    */
   private List<ContentPackageFile> getValidContentPackagesWarnValidation(List<? extends ContentPackageFile> contentPackages) {
     // generate warning for each content packages without package type
     contentPackages.stream()
         .filter(pkg -> !hasPackageType(pkg))
         .forEach(pkg -> getLog().warn("Found content package without package type: " + getCanonicalPath(pkg.getFile())));
 
     // generate warning for each content packages with invalid package type
     contentPackages.stream()
         .filter(AllPackageBuilder::hasPackageType)
         .filter(pkg -> !isValidPackageType(pkg))
         .forEach(pkg -> getLog().warn("Found content package with invalid package type: "
             + getCanonicalPath(pkg.getFile()) + " -> " + pkg.getPackageType()));
 
     // return all content packages
     return contentPackages.stream().collect(Collectors.toList());
   }
 
   private static <T> List<T> filterFiles(List<? extends InstallableFile> files, Class<T> fileClass) {
     return files.stream()
         .filter(fileClass::isInstance)
         .map(fileClass::cast)
         .collect(Collectors.toList());
   }
 
   /**
    * Build "all" content package.
    * @param properties Specifies additional properties to be set in the properties.xml file.
    * @return true if "all" package was generated, false if no valid package was found.
    * @throws IOException I/O exception
    */
   public boolean build(Map<String, String> properties) throws IOException {
 
     if (contentPackageFileSets.isEmpty()) {
       return false;
     }
 
     // prepare content package metadata
     ContentPackageBuilder builder = new ContentPackageBuilder()
         .group(groupName)
         .name(packageName)
         .packageType("container");
     if (version != null) {
       builder.version(version);
     }
 
     // define root path for "all" package
     String rootPath = buildRootPath(groupName, packageName);
     builder.filter(new PackageFilter(rootPath));
 
     // additional package properties
     if (properties != null) {
       properties.entrySet().forEach(entry -> builder.property(entry.getKey(), entry.getValue()));
     }
 
     // build content package
     try (ContentPackage contentPackage = builder.build(targetFile)) {
       buildAddContentPackages(contentPackage, rootPath);
       buildAddBundles(contentPackage, rootPath);
     }
 
     return true;
   }
 
   @SuppressWarnings("java:S3776") // ignore complexity
   private void buildAddContentPackages(ContentPackage contentPackage, String rootPath) throws IOException {
     // build set with dependencies instances for each package contained in all filesets
     Set<Dependency> allPackagesFromFileSets = new HashSet<>();
     for (ContentPackageFileSet fileSet : contentPackageFileSets) {
       for (ContentPackageFile pkg : fileSet.getFiles()) {
         addDependencyInformation(allPackagesFromFileSets, pkg);
       }
     }
 
     Collection<ContentPackageFileSet> processedFileSets;
     if (runModeOptimization == RunModeOptimization.ELIMINATE_DUPLICATES) {
       // eliminate duplicates which are same for author and publish
       processedFileSets = eliminateAuthorPublishDuplicates(contentPackageFileSets,
         environmentRunMode -> new ContentPackageFileSet(new ArrayList<>(), Collections.singletonList(environmentRunMode)));
     }
     else {
       processedFileSets = contentPackageFileSets;
     }
 
     for (ContentPackageFileSet fileSet : processedFileSets) {
       for (String environmentRunMode : fileSet.getEnvironmentRunModes()) {
         List<ContentPackageFile> previousPackages = new ArrayList<>();
         for (ContentPackageFile pkg : fileSet.getFiles()) {
           ContentPackageFile previousPkg = getDependencyChainPreviousPackage(pkg, previousPackages);
 
           // set package name, wire previous package in package dependency
           List<TemporaryContentPackageFile> processedFiles = processContentPackage(pkg, previousPkg, environmentRunMode, allPackagesFromFileSets);
 
           // add processed content packages to "all" content package - and delete the temporary files
           try {
             for (TemporaryContentPackageFile processedFile : processedFiles) {
               String path = buildPackagePath(processedFile, rootPath, environmentRunMode);
               contentPackage.addFile(path, processedFile.getFile());
               if (log.isDebugEnabled()) {
                 log.debug("  Add " + processedFile.getPackageInfoWithDependencies());
               }
             }
           }
           finally {
             processedFiles.stream()
                 .map(TemporaryContentPackageFile::getFile)
                 .forEach(FileUtils::deleteQuietly);
           }
 
           previousPackages.add(pkg);
         }
       }
     }
   }
 
   /**
    * Gets the previous package in the order defined by CONGA to define as package dependency in current package.
    * @param currentPackage Current package
    * @param previousPackages List of previous packages
    * @return Package to define as dependency, or null if no dependency should be defined
    */
   private @Nullable ContentPackageFile getDependencyChainPreviousPackage(@NotNull ContentPackageFile currentPackage,
       @NotNull List<ContentPackageFile> previousPackages) {
     if ((autoDependenciesMode == AutoDependenciesMode.OFF)
         || (autoDependenciesMode == AutoDependenciesMode.IMMUTABLE_ONLY && isMutable(currentPackage))) {
       return null;
     }
     // get last previous package
     return previousPackages.stream()
         // if not IMMUTABLE_MUTABLE_COMBINED active only that of the same mutability type
         .filter(item -> (autoDependenciesMode == AutoDependenciesMode.IMMUTABLE_MUTABLE_COMBINED) || mutableMatches(item, currentPackage))
         // make sure author-only or publish-only packages are only taken into account if the current package has same restriction
         .filter(item -> isAuthorAndPublish(item)
             || (isOnlyAuthor(item) && isOnlyAuthor(currentPackage))
             || (isOnlyPublish(item) && isOnlyPublish(currentPackage)))
         // ignore packages that are marked as dependency chain ignore
         .filter(item -> !item.isDependencyChainIgnore())
         // get last in list
         .reduce((first, second) -> second).orElse(null);
   }
 
   private void buildAddBundles(ContentPackage contentPackage, String rootPath) throws IOException {
     Collection<BundleFileSet> processedFileSets;
     if (runModeOptimization == RunModeOptimization.ELIMINATE_DUPLICATES) {
       // eliminate duplicates which are same for author and publish
       processedFileSets = eliminateAuthorPublishDuplicates(bundleFileSets,
           environmentRunMode -> new BundleFileSet(new ArrayList<>(), Collections.singletonList(environmentRunMode)));
     }
     else {
       processedFileSets = bundleFileSets;
     }
 
     for (BundleFileSet bundleFileSet : processedFileSets) {
       for (String environmentRunMode : bundleFileSet.getEnvironmentRunModes()) {
         for (BundleFile bundleFile : bundleFileSet.getFiles()) {
           String path = buildBundlePath(bundleFile, rootPath, environmentRunMode);
           contentPackage.addFile(path, bundleFile.getFile());
         }
       }
     }
   }
 
   private static boolean hasPackageType(ContentPackageFile pkg) {
     // accept only content packages with a package type set
     return pkg.getPackageType() != null;
   }
 
   private static boolean isValidPackageType(ContentPackageFile pkg) {
     // check if the package type is an allowed package type
     return ALLOWED_PACKAGE_TYPES.contains(pkg.getPackageType());
   }
 
   private static boolean isMutable(ContentPackageFile pkg) {
     return StringUtils.equals("content", pkg.getPackageType());
   }
 
   private static boolean mutableMatches(ContentPackageFile pkg1, ContentPackageFile pkg2) {
     if (pkg1 == null || pkg2 == null) {
       return false;
     }
     return isMutable(pkg1) == isMutable(pkg2);
   }
 
   /**
    * Build root path to be used for embedded package.
    * @param groupName Group name
    * @param packageName Package name
    * @return Package path
    */
   private static String buildRootPath(String groupName, String packageName) {
     return "/apps/" + groupName + "-" + packageName + "-packages";
   }
 
   /**
    * Generate suffix for instance and environment run modes.
    * @param file File
    * @return Suffix string
    */
   private static String buildRunModeSuffix(InstallableFile file, String environmentRunMode) {
     StringBuilder runModeSuffix = new StringBuilder();
     if (isOnlyAuthor(file)) {
       runModeSuffix.append(".").append(RUNMODE_AUTHOR);
     }
     else if (isOnlyPublish(file)) {
       runModeSuffix.append(".").append(RUNMODE_PUBLISH);
     }
     if (!StringUtils.equals(environmentRunMode, RUNMODE_DEFAULT)) {
       runModeSuffix.append(".").append(environmentRunMode);
     }
     return runModeSuffix.toString();
   }
 
   /**
    * Generate suffix for versions of content packages.
    * @param pkg Content package
    * @param ignoreSnapshot Do not build version suffix for SNAPSHOT versions
    * @return Suffix string
    */
   private String buildVersionSuffix(ContentPackageFile pkg, boolean ignoreSnapshot) {
     StringBuilder versionSuffix = new StringBuilder();
 
     if (this.packageVersionMode == PackageVersionMode.RELEASE_SUFFIX_VERSION
         && (!ArtifactUtils.isSnapshot(pkg.getVersion()) || !ignoreSnapshot)
         && !StringUtils.equals(pkg.getVersion(), this.version)
         && this.version != null) {
       versionSuffix.append(VERSION_SUFFIX_SEPARATOR)
           // replace dots with underlines in version suffix to avoid confusion with main version number
           .append(StringUtils.replace(this.version, ".", "_"));
     }
 
     return versionSuffix.toString();
   }
 
   /**
    * Build path to be used for embedded package.
    * @param pkg Package
    * @param rootPath Root path
    * @return Package path
    */
   @SuppressWarnings("java:S1075") // no filesystem path
   private String buildPackagePath(ContentPackageFile pkg, String rootPath, String environmentRunMode) {
     if (packageTypeValidation == PackageTypeValidation.STRICT && !isValidPackageType(pkg)) {
       throw new IllegalArgumentException("Package " + pkg.getPackageInfo() + " has invalid package type: '" + pkg.getPackageType() + "'.");
     }
 
     String runModeSuffix = buildRunModeSuffix(pkg, environmentRunMode);
 
     // add run mode suffix to both install folder path and package file name
     String path = rootPath + "/" + Objects.toString(pkg.getPackageType(), "misc") + "/install" + runModeSuffix;
 
     String versionSuffix = "";
     String packageVersion = pkg.getVersion();
     String packageVersionWithoutSuffix = packageVersion;
     if (this.packageVersionMode == PackageVersionMode.RELEASE_SUFFIX_VERSION && this.version != null) {
       packageVersionWithoutSuffix = StringUtils.removeEnd(packageVersion, buildVersionSuffix(pkg, false));
     }
     if (packageVersion != null && pkg.getFile().getName().contains(packageVersionWithoutSuffix)) {
       versionSuffix = "-" + packageVersion;
     }
     String fileName = pkg.getName() + versionSuffix
         + "." + FilenameUtils.getExtension(pkg.getFile().getName());
     return path + "/" + fileName;
   }
 
   /**
    * Build path to be used for embedded bundle.
    * @param bundleFile Bundle
    * @param rootPath Root path
    * @return Package path
    */
   private static String buildBundlePath(BundleFile bundleFile, String rootPath, String environmentRunMode) {
     String runModeSuffix = buildRunModeSuffix(bundleFile, environmentRunMode);
 
     // add run mode suffix to both install folder path and package file name
     String path = rootPath + "/application/install" + runModeSuffix;
 
     return path + "/" + bundleFile.getFile().getName();
   }
 
   /**
    * Rewrite content package ZIP file while adding to "all" package:
    * Add dependency to previous package in CONGA configuration file oder.
    * @param pkg Package to process (can be parent packe of the actual file)
    * @param previousPkg Previous package to get dependency information from.
    *          Is null if no previous package exists or auto dependency mode is switched off.
    * @param environmentRunMode Environment run mode
    * @param allPackagesFromFileSets Set with all packages from all file sets as dependency instances
    * @return Returns a list of content package *temporary* files - have to be deleted when processing is completed.
    * @throws IOException I/O error
    */
   @SuppressWarnings("java:S3776") // ignore complexity
   private List<TemporaryContentPackageFile> processContentPackage(ContentPackageFile pkg,
       ContentPackageFile previousPkg, String environmentRunMode,
       Set<Dependency> allPackagesFromFileSets) throws IOException {
 
     List<TemporaryContentPackageFile> result = new ArrayList<>();
     List<TemporaryContentPackageFile> subPackages = new ArrayList<>();
 
     // create temp zip file to create rewritten copy of package
     File tempFile = File.createTempFile(FilenameUtils.getBaseName(pkg.getFile().getName()), ".zip");
 
     // open original content package
     try (ZipFile zipFileIn = new ZipFile.Builder().setFile(pkg.getFile()).get()) {
 
       // iterate through entries and write them to the temp. zip file
       try (FileOutputStream fos = new FileOutputStream(tempFile);
           ZipArchiveOutputStream zipOut = new ZipArchiveOutputStream(fos)) {
         Enumeration<? extends ZipArchiveEntry> zipInEntries = zipFileIn.getEntries();
         while (zipInEntries.hasMoreElements()) {
           ZipArchiveEntry zipInEntry = zipInEntries.nextElement();
           if (!zipInEntry.isDirectory()) {
             try (InputStream is = zipFileIn.getInputStream(zipInEntry)) {
               boolean processedEntry = false;
 
               // if entry is properties.xml, update dependency information
               if (StringUtils.equals(zipInEntry.getName(), "META-INF/vault/properties.xml")) {
                 FileVaultProperties fileVaultProps = new FileVaultProperties(is);
                 Properties props = fileVaultProps.getProperties();
                 addSuffixToPackageName(props, pkg, environmentRunMode);
                 addSuffixToVersion(props, pkg);
 
                 // update package dependencies
                 ContentPackageFile dependencyFile = previousPkg;
                 if (autoDependenciesMode == AutoDependenciesMode.OFF || pkg.isDependencyChainIgnore()) {
                   dependencyFile = null;
                 }
                 updateDependencies(pkg, props, dependencyFile, environmentRunMode, allPackagesFromFileSets);
 
                 // if package type is missing in package properties, put in the type defined in model
                 String packageType = pkg.getPackageType();
                 if (props.get(NAME_PACKAGE_TYPE) == null && packageType != null) {
                   props.put(NAME_PACKAGE_TYPE, packageType);
                 }
 
                 ZipArchiveEntry zipOutEntry = newZipEntry(zipInEntry);
                 zipOut.putArchiveEntry(zipOutEntry);
                 fileVaultProps.storeToXml(zipOut);
                 zipOut.closeArchiveEntry();
                 processedEntry = true;
               }
 
               // process sub-packages as well: add runmode suffix and update dependencies
               else if (StringUtils.equals(FilenameUtils.getExtension(zipInEntry.getName()), "zip")) {
                 File tempSubPackageFile = File.createTempFile(FilenameUtils.getBaseName(zipInEntry.getName()), ".zip");
                 try (FileOutputStream subPackageFos = new FileOutputStream(tempSubPackageFile)) {
                   IOUtils.copy(is, subPackageFos);
                 }
 
                 // check if contained ZIP file is really a content package
                 // then process it as well, remove if from the content package is was contained in
                 // and add it as "1st level package" to the all package
                 TemporaryContentPackageFile tempSubPackage = new TemporaryContentPackageFile(tempSubPackageFile, pkg.getVariants());
                 if (packageTypeValidation == PackageTypeValidation.STRICT && !isValidPackageType(tempSubPackage)) {
                   throw new IllegalArgumentException("Package " + pkg.getPackageInfo() + " contains sub package " + tempSubPackage.getPackageInfo()
                       + " with invalid package type: '" + StringUtils.defaultString(tempSubPackage.getPackageType()) + "'");
                 }
                 if (StringUtils.isNoneBlank(tempSubPackage.getGroup(), tempSubPackage.getName())) {
                   subPackages.add(tempSubPackage);
                   processedEntry = true;
                 }
                 else {
                   FileUtils.deleteQuietly(tempSubPackageFile);
                 }
               }
 
               // otherwise transfer the binary data 1:1
               if (!processedEntry) {
                 ZipArchiveEntry zipOutEntry = newZipEntry(zipInEntry);
                 zipOut.putArchiveEntry(zipOutEntry);
                 IOUtils.copy(is, zipOut);
                 zipOut.closeArchiveEntry();
               }
             }
 
           }
         }
       }
 
       // add sub package metadata to set with dependency information
       for (TemporaryContentPackageFile tempSubPackage : subPackages) {
         addDependencyInformation(allPackagesFromFileSets, tempSubPackage);
       }
 
       // process sub packages and add to result
       for (TemporaryContentPackageFile tempSubPackage : subPackages) {
         result.addAll(processContentPackage(tempSubPackage, previousPkg, environmentRunMode, allPackagesFromFileSets));
       }
 
       result.add(new TemporaryContentPackageFile(tempFile, pkg.getVariants()));
     }
     return result;
   }
 
   private ZipArchiveEntry newZipEntry(ZipArchiveEntry in) {
     ZipArchiveEntry out = new ZipArchiveEntry(in.getName());
     if (buildOutputTimestamp != null && buildOutputTimestamp.isValid()) {
       out.setLastModifiedTime(buildOutputTimestamp.toFileTime());
     }
     else if (in.getLastModifiedTime() != null) {
       out.setLastModifiedTime(in.getLastModifiedTime());
     }
     return out;
   }
 
   /**
    * Add dependency information to dependencies string in properties (if it does not exist already).
    * @param pkg Current content package
    * @param props Properties
    * @param dependencyFile Dependency package
    * @param allPackagesFromFileSets Set with all packages from all file sets as dependency instances
    */
   private void updateDependencies(ContentPackageFile pkg, Properties props, ContentPackageFile dependencyFile,
       String environmentRunMode, Set<Dependency> allPackagesFromFileSets) {
     String[] existingDepsStrings = StringUtils.split(props.getProperty(NAME_DEPENDENCIES), ",");
     Dependency[] existingDeps = null;
     if (existingDepsStrings != null && existingDepsStrings.length > 0) {
       existingDeps = Dependency.fromString(existingDepsStrings);
     }
     if (existingDeps != null) {
       existingDeps = autoDependenciesMode == AutoDependenciesMode.OFF
           ? rewriteReferencesToManagedPackages(pkg, environmentRunMode, allPackagesFromFileSets, existingDeps)
           : removeReferencesToManagedPackages(existingDeps, allPackagesFromFileSets);
     }
 
     Dependency[] deps;
     if (dependencyFile != null) {
       Dependency newDependency = createDependencyFromContentPackageFile(dependencyFile, environmentRunMode);
       deps = addDependency(existingDeps, newDependency);
     }
     else {
       deps = existingDeps;
     }
 
     if (deps != null) {
       String dependenciesString = Dependency.toString(deps);
       props.put(NAME_DEPENDENCIES, dependenciesString);
     }
   }
 
   private @NotNull Dependency createDependencyFromContentPackageFile(@NotNull ContentPackageFile dependencyFile,
       @NotNull String environmentRunMode) {
     String runModeSuffix = buildRunModeSuffix(dependencyFile, environmentRunMode);
     String dependencyVersion = dependencyFile.getVersion() + buildVersionSuffix(dependencyFile, true);
     return new Dependency(dependencyFile.getGroup(),
         dependencyFile.getName() + runModeSuffix,
         VersionRange.fromString(dependencyVersion));
   }
 
   private static Dependency[] addDependency(Dependency[] existingDeps, Dependency newDependency) {
     if (existingDeps != null) {
       return DependencyUtil.add(existingDeps, newDependency);
     }
     else {
       return new Dependency[] { newDependency };
     }
   }
 
   private static void addSuffixToPackageName(Properties props, ContentPackageFile pkg, String environmentRunMode) {
     String runModeSuffix = buildRunModeSuffix(pkg, environmentRunMode);
     String packageName = props.getProperty(NAME_NAME) + runModeSuffix;
     props.put(NAME_NAME, packageName);
   }
 
   private void addSuffixToVersion(Properties props, ContentPackageFile pkg) {
     // package version
     if (StringUtils.isEmpty(pkg.getVersion())) {
       return;
     }
     String suffixedVersion = pkg.getVersion() + buildVersionSuffix(pkg, true);
     props.put(NAME_VERSION, suffixedVersion);
   }
 
   private @NotNull Dependency[] rewriteReferencesToManagedPackages(@NotNull ContentPackageFile pkg,
       @NotNull String environmentRunMode, @NotNull Set<Dependency> allPackagesFromFileSets, @NotNull Dependency[] deps) {
     return Arrays.stream(deps)
         .map(dep -> rewriteReferenceIfDependencyIsManagedPackage(pkg, environmentRunMode, allPackagesFromFileSets, dep))
         .toArray(Dependency[]::new);
   }
 
   private @NotNull Dependency rewriteReferenceIfDependencyIsManagedPackage(@NotNull ContentPackageFile pkg,
       @NotNull String environmentRunMode, @NotNull Set<Dependency> allPackagesFromFileSets, @NotNull Dependency dep) {
     // not a managed package, return as is
     if (!allPackagesFromFileSets.contains(dep)) {
       return dep;
     }
     return findContentPackageFileForDependency(pkg, dep)
         // found a content package file for the dependency, rewrite the dependency
         .map(contentPackageFile -> createDependencyFromContentPackageFile(contentPackageFile, environmentRunMode))
         // found no content package file for the dependency, use current run mode suffix
         .orElseGet(() -> createDependencyWithCurrentPackageRunModeSuffix(pkg, environmentRunMode, dep));
   }
 
   private @NotNull Optional<ContentPackageFile> findContentPackageFileForDependency(@NotNull ContentPackageFile pkg,
       @NotNull Dependency dep) {
     // look for content package in all file sets
     return contentPackageFileSets.stream()
             // prefer file set which contains the current package to use current run mode
             .sorted((fileSet1, fileSet2) -> sortFileSetsContainingPackageFirst(pkg, fileSet1, fileSet2))
             .flatMap(fileSet -> fileSet.getFiles().stream())
             .filter(contentPackageFile -> isContentPackageForDependency(contentPackageFile, dep))
             .findFirst();
   }
 
   private int sortFileSetsContainingPackageFirst(@NotNull ContentPackageFile pkg,
       @NotNull ContentPackageFileSet fileSet1, @NotNull ContentPackageFileSet fileSet2) {
     int fileSet1ContainsPackage = fileSet1.getFiles().contains(pkg) ? 1 : 0;
     int fileSet2ContainsPackage = fileSet2.getFiles().contains(pkg) ? 1 : 0;
     return fileSet2ContainsPackage - fileSet1ContainsPackage;
   }
 
   private boolean isContentPackageForDependency(@NotNull ContentPackageFile contentPackageFile, @NotNull Dependency dep) {
     return contentPackageFile.getGroup().equals(dep.getGroup())
             && contentPackageFile.getName().equals(dep.getName());
   }
 
   private @NotNull Dependency createDependencyWithCurrentPackageRunModeSuffix(@NotNull ContentPackageFile pkg,
       @NotNull String environmentRunMode, @NotNull Dependency dep) {
     String runModeSuffix = buildRunModeSuffix(pkg, environmentRunMode);
     return new Dependency(dep.getGroup(), dep.getName() + runModeSuffix, dep.getRange());
   }
 
   /**
    * Removes existing references to packages contained in the list of packages to manage by this builder because
    * they are added new (and probably with a different package name) during processing.
    * @param deps Dependencies list
    * @param allPackagesFromFileSets Set with all packages from all file sets as dependency instances
    * @return Dependencies list
    */
   private static Dependency[] removeReferencesToManagedPackages(Dependency[] deps, Set<Dependency> allPackagesFromFileSets) {
     return Arrays.stream(deps)
         .filter(dep -> !allPackagesFromFileSets.contains(dep))
         .toArray(size -> new Dependency[size]);
   }
 
   private static void addDependencyInformation(Set<Dependency> allPackagesFromFileSets, ContentPackageFile pkg) {
     allPackagesFromFileSets.add(new Dependency(pkg.getGroup(), pkg.getName(), VersionRange.fromString(pkg.getVersion())));
   }
 
   public String getGroupName() {
     return this.groupName;
   }
 
   public String getPackageName() {
     return this.packageName;
   }
 
   public File getTargetFile() {
     return this.targetFile;
   }
 
 }