package jalview.util;

import jalview.bin.Cache;

public class UserAgent
{

  public static String getUserAgent(String className)
  {
    StringBuilder sb = new StringBuilder();
    sb.append("Jalview");
    sb.append('/');
    sb.append(Cache.getDefault("VERSION", "Unknown"));
    sb.append(" (");
    sb.append(System.getProperty("os.name"));
    sb.append("; ");
    sb.append(System.getProperty("os.arch"));
    sb.append(' ');
    sb.append(System.getProperty("os.name"));
    sb.append(' ');
    sb.append(System.getProperty("os.version"));
    sb.append("; ");
    sb.append("java/");
    sb.append(System.getProperty("java.version"));
    sb.append("; ");
    sb.append("jalview/");
    sb.append(ChannelProperties.getProperty("channel"));
    if (className != null)
    {
      sb.append("; ");
      sb.append(className);
    }
    String installation = Cache.applicationProperties
            .getProperty("INSTALLATION");
    if (installation != null)
    {
      sb.append("; ");
      sb.append(installation);
    }
    sb.append(')');
    sb.append(" help@jalview.org");
    return sb.toString();
  }

  public static String getUserAgent()
  {
    return getUserAgent(null);
  }

}