/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership. The ASF
 * licenses this file to You 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 org.apache.sling.feature.cpconverter.vltpkg;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import java.util.stream.Collectors;

import org.apache.jackrabbit.vault.fs.api.PathFilterSet;
import org.apache.jackrabbit.vault.fs.api.WorkspaceFilter;
import org.apache.jackrabbit.vault.packaging.Dependency;
import org.apache.jackrabbit.vault.packaging.PackageProperties;
import org.apache.jackrabbit.vault.packaging.PackageType;
import org.apache.jackrabbit.vault.packaging.VaultPackage;

public class VaultPackageUtils {

    private static final String DEPENDENCIES_DELIMITER = ",";

    private VaultPackageUtils() {
        // this class must not be instantiated from outside
    }

    public static PackageType detectPackageType(VaultPackage vaultPackage) {
        PackageType packageType = vaultPackage.getPackageType();
        if (packageType != null) {
            return packageType;
        }

        // borrowed from org.apache.jackrabbit.vault.fs.io.AbstractExporter
        WorkspaceFilter filter = vaultPackage.getMetaInf().getFilter();

        boolean hasApps = false;
        boolean hasOther = false;
        if (filter != null) {
            for (PathFilterSet p : filter.getFilterSets()) {
                if ("cleanup".equals(p.getType())) {
                    continue;
                }
                String root = p.getRoot();
                if ("/apps".equals(root)
                        || root.startsWith("/apps/")
                        || "/libs".equals(root)
                        || root.startsWith("/libs/")) {
                    hasApps = true;
                } else {
                    hasOther = true;
                }
            }
            if (hasApps && !hasOther) {
                return PackageType.APPLICATION;
            } else if (hasOther && !hasApps) {
                return PackageType.CONTENT;
            }
        }
        return PackageType.MIXED;
    }

    public static Set<Dependency> getDependencies(VaultPackage vaultPackage) {
        Dependency[] originalDepenencies = vaultPackage.getDependencies();

        Set<Dependency> dependencies = new HashSet<>();

        if (originalDepenencies != null && originalDepenencies.length > 0) {
            dependencies.addAll(Arrays.asList(originalDepenencies));
        }

        return dependencies;
    }

    public static void setDependencies(Set<Dependency> dependencies, Properties properties) {
        if (dependencies == null || dependencies.isEmpty()) {
            return;
        }

        String dependenciesString = dependencies.stream().map(d -> d.toString()).collect(Collectors.joining(DEPENDENCIES_DELIMITER));
        properties.setProperty(PackageProperties.NAME_DEPENDENCIES, dependenciesString);
    }

}