Admin.java

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.swing.tree.DefaultMutableTreeNode;

public class Admin {
 private static Admin admin;
 private Map<String, User> users;
 private List<String> userIDs;
 private List<String> groups;
 private List<String> positiveWords;
 private double positivityPercentage;
 private int totalUsers;
 private int totalGroups;
 private int totalMessages;
 private int totalPositivity;
 private String lastUserToUpdate;
 private AdminControlPanel controlPanel;

 //singelton so only one admin is allowed to exist 
 public static Admin getAdmin() {
 if (admin == null) {
 admin = new Admin();
 }
 return admin;
 }

 //initialize all the admin variables 
 private Admin() {
 this.users = new HashMap<>();
 this.userIDs = new ArrayList<>();
 this.groups = new ArrayList<>();
 this.positiveWords = new ArrayList<>();
 this.positiveWords.add("Love");
 this.positiveWords.add("Good");
 this.positiveWords.add("Happy");
 this.positiveWords.add("Awesome");
 }

 //sets the admin control panel to the only admin control panel 
 public void setAdminControlPanel(AdminControlPanel adminControlPanel) {
 this.controlPanel = adminControlPanel;
 }

 //creates a user and sends the name the object and the node 
 public void createUser(String userName, User userObject, DefaultMutableTreeNode selectedNode) {
 users.put(userName, userObject);
 this.userIDs.add(userName);
 TreePanel.panel().addUserToTree(userName, selectedNode);
 userObject.setCreationTime(System.currentTimeMillis());
 incrementTotalUsers();
 }
 
 //retrieve list of existing users 
 public Map<String, User> getUsers() {
 	return this.users;
 }

 //increment total users by 1 
 public void incrementTotalUsers() {
 this.totalUsers += 1;
 }

 //retrieve total users 
 public int getTotalUsers() {
 return totalUsers;
 }

 //creates a user group 
 public void createUserGroup(String groupName, DefaultMutableTreeNode selectedNode) {
 this.groups.add(groupName);
 TreePanel.panel().addGroupToTree(groupName, selectedNode);
 incrementTotalGroups();
 }

 //increment total groups by 1 
 public void incrementTotalGroups() {
 this.totalGroups += 1;
 }

 //retrieve total groups 
 public int getTotalGroups() {
 return totalGroups;
 }
 
 //gets the list of existing groups 
 public List<String> getGroups() {
 	return groups;
 }
 
 //increments total messages by 1 
 public void addToTotalMessages() {
 	this.totalMessages += 1;
 }
 
 //retrieves total messages 
 public int getTotalMessages() {
 	return this.totalMessages;
 }
 
 
 //retrieve list of positive words 
 public List<String> getListPositiveWords() {
 	return positiveWords;
 }
 
 //adds to total positive words 
 public void addToPositivity() {
 	this.totalPositivity += 1;
 	calculatePositvityPercentage();
 }
 
 //calculate the total positivy percentage 
 public void calculatePositvityPercentage() {
 positivityPercentage = ((double) totalPositivity / totalMessages) * 100;
 }
 
 //retrieve total positvity percentage 
 public double getPositivityPercentage() {
 	return positivityPercentage;
 }
 
 public boolean validateIDs() {
 	
 	for (int i = 0; i < userIDs.size(); i++) {
 		String currentID = userIDs.get(i);
 		
 		if (currentID.contains(" ")) {
 			System.out.println("Checking spaces");
 			return false;
 		}
 		for (int j = i + 1; j < userIDs.size(); j++) {
 			if (currentID.equals(userIDs.get(j))) {
 				System.out.println("Comparing all strings");
 				return false;
 			}
 			
 		}
 	}
 	
 	return true; 
 }
 
 public void setLastUserToUpdate (String user) {
 	this.lastUserToUpdate = user;
 }
 
 public String getLastUserToUpdate() {
 	return lastUserToUpdate;
 }
 
 
}