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/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */
package org.jboss.as.arquillian.protocol.jmx;

import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.Manifest;

import org.jboss.shrinkwrap.api.Archive;
import org.jboss.shrinkwrap.api.Node;

/**
 *
 * @author Kabir Khan
 */
class ManifestUtils {

    public static Manifest getManifest(Archive archive, boolean create) {
        Manifest manifest = null;
        try {
            Node node = archive.get(JarFile.MANIFEST_NAME);
            if (node == null) {
                manifest = new Manifest();
                Attributes attributes = manifest.getMainAttributes();
                attributes.putValue(Attributes.Name.MANIFEST_VERSION.toString(), "1.0");
            } else if (create) {
                manifest = new Manifest(node.getAsset().openStream());
            }
            return manifest;
        } catch (Exception ex) {
            throw new IllegalStateException("Cannot obtain manifest", ex);
        }
    }

    public static Manifest getOrCreateManifest(Archive archive) {
        Manifest manifest;
        try {
            Node node = archive.get(JarFile.MANIFEST_NAME);
            if (node == null) {
                manifest = new Manifest();
                Attributes attributes = manifest.getMainAttributes();
                attributes.putValue(Attributes.Name.MANIFEST_VERSION.toString(), "1.0");
            } else {
                manifest = new Manifest(node.getAsset().openStream());
            }
            return manifest;
        } catch (Exception ex) {
            throw new IllegalStateException("Cannot obtain manifest", ex);
        }
    }

}