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package io.sitoolkit.wt.gui.infra.util;

import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.jar.Manifest;
import io.sitoolkit.wt.infra.log.SitLogger;
import io.sitoolkit.wt.infra.log.SitLoggerFactory;
import io.sitoolkit.wt.util.infra.util.StrUtils;

public class VersionUtils {

  private static final SitLogger LOG = SitLoggerFactory.getLogger(VersionUtils.class);

  private VersionUtils() {}

  public static String get() {
    try {
      Enumeration resources =
          VersionUtils.class.getClassLoader().getResources("META-INF/MANIFEST.MF");

      while (resources.hasMoreElements()) {
        URL res = resources.nextElement();

        Manifest manifest = new Manifest(res.openStream());

        if ("sit-wt-app".equals(manifest.getMainAttributes().getValue("Implementation-Title"))) {
          return manifest.getMainAttributes().getValue("Implementation-Version");
        }
      }

    } catch (IOException e) {
      LOG.warn("app.getVersionFailed", e);
    }
    return "";
  }

  public static boolean isNewer(String currentVer, String newVer) {
    if (StrUtils.isEmpty(currentVer) || StrUtils.isEmpty(newVer)) {
      return false;
    }
    return currentVer.compareTo(newVer) < 0;
  }

}