/*
 * Stores user information (needed for Ubiquitous stuff)
 */

import java.util.*;
import java.lang.*;
import java.io.*;
import java.io.OutputStream.*;
import java.io.InputStream.*;

/*
 * Stores default data for all Users and returns requested information
 */

public class BDUserData {

  //password is an attempt to prevent other classes from accessing
  //the information stored here
  private String systemPassword = "KJaslkjdKDDShLBUasdf2837skdj";
  private Hashtable SysUsers = new Hashtable();

  // Initializes HashTable Data structures Just for BigDave...now
  public void initializeBigDave(String password) {
    if(0 == systemPassword.compareTo(password)) {
      Hashtable Email = new Hashtable();
      Email.clear();
      Email.put("server", new String("anIMAPserver"));
      Email.put("username", new String("auser"));
      Email.put("password", new String("apassword"));
      Email.put("MaxMsgSize", new Integer(400));
      //Email.put("ExcludeList", new Vector());

      Hashtable Pager = new Hashtable();
      Pager.clear();
      Pager.put("userarea", new String("404"));
      Pager.put("usernumber", new String("sevendigitnumber"));
      Pager.put("system", new String("airtouch"));

      Hashtable User = new Hashtable();
      User.clear();
      User.put("pagertable", Pager);
      User.put("emailtable", Email);

      SysUsers.clear();
      SysUsers.put("bigdave", User);
    }
  }

  // Adds a user to the system
  public void addUser(Hashtable aUser, String name, String password) {
    if(0 == systemPassword.compareTo(password) {
      SysUsers.put(name, aUser);
    }

  // Reads SysUsers data from file
  public void initialize(String password) {
    if(0 == systemPassword.compareTo(password) {
      FileInputStream instream = new FileInputStream("bduser.dat");
      ObjectInputStream p = new ObjectInputStream(instream);
      SysUsers = (Hashtable)p.readObject();
      instream.close();
    }
  }

  // Saves SysUsers data to a file
  public void saveData(String password) {
    if(0 == systemPassword.compareTo(password) {
      FileOutputStream outstream = new FileOutputStream("bduser.dat");
      ObjectOutputStream p = new ObjectOutputStream(outstream);
      p.writeObject(SysUsers);
      p.flush();
      outstream.close();
    }
  }

  // Returns an Enumeration of the users in the system
  public Enumeration getUsers(String password) {
    if(0 == systemPassword.compareTo(password)) {
      return (SysUsers.keys());
    }
    else {
      return (NULL);
    }

  // Returns the hashtable that has email data
  public Hashtable getEmailData(String User, String password) {
    if(0 == systemPassword.compareTo(password)) {
      return ((Hashtable)((Hashtable)SysUsers.get(User)).get("emailtable"));
    }
    else {
      return (NULL);
    }

  }

  // Returns the hashtable that has pager data
  public Hashtable getPagerData(String User, String password) {
    if(0 == systemPassword.compareTo(password)) {
      return ((Hashtable)((Hashtable)SysUsers.get(User)).get("pagertable"));
    }
    else {
      return (NULL);
    }
  }

  // Changes system password
  public boolean changeSystemPassword(String oldpass, String newpass) {
    if(0 == systemPassword.compareTo(oldpass)) {
      systemPassword = newpass;
      return(true);
    }
    else {
      return(false);
    }
  }

}