package org.herac.tuxguitar.community.auth;

import java.security.MessageDigest;

import org.apache.log4j.Logger;
import org.herac.tuxguitar.gui.system.config.TGConfigManager;
import org.herac.tuxguitar.util.Base64Decoder;
import org.herac.tuxguitar.util.Base64Encoder;

public class TGCommunityAuth {

  private static final String STRING_SEPARATOR = ";";

  private String authCode;
  private String password;
  private String username;

  public TGCommunityAuth() {
    this.username = new String();
    this.password = new String();
    this.authCode = new String();
  }

  public String getAuthCode() {
    return this.authCode;
  }

  public String getPassword() {
    return password;
  }

  public String getUsername() {
    return username;
  }

  public boolean isEmpty() {
    return (this.username == null || this.password == null
        || this.username.length() == 0 || this.password.length() == 0);
  }

  public void load(TGConfigManager config) {
    String encodedData = config.getStringConfigValue("community.account");
    if (encodedData != null && encodedData.length() > 0) {
      String data = new String(Base64Decoder.decode(encodedData.getBytes()));
      String[] values = data.split(STRING_SEPARATOR);
      if (values.length == 2) {
        this.setUsername(values[0]);
        this.setPassword(values[1]);
      }
    }
  }

  public void save(TGConfigManager config) {
    String data = new String(this.getUsername() + STRING_SEPARATOR
        + this.getPassword());
    String encodedData = new String(Base64Encoder.encode(data.getBytes()));
    config.setProperty("community.account", encodedData);
  }

  public void setPassword(String password) {
    this.password = password;
  }

  public void setUsername(String username) {
    this.username = username;
  }

  public void update() {
    try {
      String passwordMD5 = new String();
      if (this.password != null && this.password.length() > 0) {
        MessageDigest md = MessageDigest.getInstance("md5");
        md.update(this.password.getBytes());
        byte[] digest = md.digest();
        for (byte digestByte : digest) {
          passwordMD5 += Integer.toHexString((digestByte >> 4) & 0xf);
          passwordMD5 += Integer.toHexString((digestByte & 0xf));
        }
      }
      this.authCode = new String(Base64Encoder.encode(new String(this.username
          + ";" + passwordMD5).getBytes()));
    } catch (Throwable throwable) {
      LOG.error(throwable);
    }
  }

  /** The Logger for this class. */
  public static final transient Logger LOG = Logger
      .getLogger(TGCommunityAuth.class);

}