project test is done

MyLocalChat/src/main/java/app/Main.java

@@ -1,16 +1,17 @@
 package app;
 
-import fassade.ChatService;
+import server.ChatServer;
 import ui.Chat;
 
 public class Main {
+    public static void main(String[] args) {
+        new Thread(() -> ChatServer.startServer()).start();
         
-	 public static void main(String[] args) {
+        try { Thread.sleep(1000); } catch (InterruptedException e) {}
-		 ChatService service = new ChatService();
-	        
-	        // Zwei Fenster erstellen
-	        Chat omarChat = new Chat("Omar", "Obai", service, 550, 100);
-	        Chat obaiChat = new Chat("Obai", "Omar", service, 100, 100);
-	    }
         
+        javax.swing.SwingUtilities.invokeLater(() -> {
+            new Chat("Obai", 100, 100);
+            new Chat("Omar", 550, 100);
+        });
+    }
 }

MyLocalChat/src/main/java/domain/User.java

@@ -3,6 +3,7 @@ package domain;
 import java.util.List;
 
 public class User {
+
 	private static int nextUserId = 1000;
 	private int userId;
 	private final String username;
@@ -12,6 +13,7 @@ public class User {
 	private UserChatRoom chatRoom;
 	private UserGruppenRoom gruppenRoom;
 	
+	
 	public User(String username) {
 		this.userId = nextUserId++;
 		this.username = username;

MyLocalChat/src/main/java/domain/UserChatRoom.java

@@ -5,12 +5,13 @@ import java.util.List;
 import java.util.Objects;
 
 public class UserChatRoom {
-    private List<ChatRoom> chatRooms; // Bessere Namensgebung: chatRooms statt chatsRooms
+    private List<ChatRoom> chatRooms; 
     
     public UserChatRoom() {
         this.chatRooms = new ArrayList<>();
     }
     
+    
     public boolean addChat(ChatRoom chatRoom) {
         Objects.requireNonNull(chatRoom, "ChatRoom darf nicht null sein");
         

MyLocalChat/src/main/java/fassade/ChatService.java

@@ -19,13 +19,14 @@ public class ChatService {
         usersById = new HashMap<>();
     }
     
-    public void createUser(String userName) {
+    public boolean createUser(String userName) {
         if (users.containsKey(userName)) 
             throw new IllegalArgumentException("User existiert bereits: " + userName);
         
         User tempUser = new User(userName);
         users.put(userName, tempUser);
         usersById.put(tempUser.getUserId(), tempUser);
+        return true;
     }
     
     private User getUser(String userName) {

MyLocalChat/src/main/java/server/ChatServer.java

@@ -0,0 +1,69 @@
+package server;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+public class ChatServer {
+    private static List<PrintWriter> clientWriters = new ArrayList<>();
+    
+    public static void startServer() {
+        System.out.println("🚀 Starte LocalChat server...");
+        
+        try (ServerSocket serverSocket = new ServerSocket(12345)) {
+            System.out.println("✅ server läuft auf Port 12345");
+            
+            while (true) {
+                Socket clientSocket = serverSocket.accept();
+                System.out.println("🔗 Neuer Client verbunden");
+                new Thread(new ClientHandler(clientSocket)).start();
+            }
+        } catch (IOException e) {
+            System.out.println("❌ server Fehler: " + e.getMessage());
+        }
+    }
+    
+    private static class ClientHandler implements Runnable {
+        private Socket socket;
+        private PrintWriter out;
+        private String username;
+        
+        public ClientHandler(Socket socket) {
+            this.socket = socket;
+        }
+        
+        public void run() {
+            try {
+                out = new PrintWriter(socket.getOutputStream(), true);
+                BufferedReader in = new BufferedReader(
+                    new InputStreamReader(socket.getInputStream()));
+                
+                // Username vom Client empfangen
+                username = in.readLine();
+                System.out.println("👤 " + username + " ist beigetreten");
+                
+                clientWriters.add(out);
+                broadcast("🌟 " + username + " hat den Chat betreten");
+                
+                // Nachrichten empfangen und verteilen
+                String message;
+                while ((message = in.readLine()) != null) {
+                    System.out.println("📩 " + username + ": " + message);
+                    broadcast(username + ": " + message);
+                }
+            } catch (IOException e) {
+                System.out.println("❌ " + username + " hat den Chat verlassen");
+            } finally {
+                clientWriters.remove(out);
+                broadcast("👋 " + username + " hat den Chat verlassen");
+                try { socket.close(); } catch (IOException e) {}
+            }
+        }
+    }
+    
+    private static void broadcast(String message) {
+        for (PrintWriter writer : clientWriters) {
+            writer.println(message);
+        }
+    }
+}

MyLocalChat/src/main/java/ui/Chat.java

@@ -3,54 +3,67 @@ package ui;
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.*;
-import fassade.ChatService;
+import java.io.*;
+import java.net.*;
 
 public class Chat extends JFrame {
-    private ChatService service;
+    private PrintWriter out;
     private String username;
-    private int roomId;
     
     private JTextArea chatArea;
     private JTextField messageField;
-    private JButton sendButton;
     
-    public Chat(String username, String otherUser, ChatService service, int x, int y) {
+    public Chat(String username, int x, int y) {
-        this.service = service;
         this.username = username;
-        
-        // User erstellen
-        service.createUser(username);
-        service.createUser(otherUser);
-        
-        // Chatroom erstellen
-        this.roomId = service.createChatRoom(username, otherUser);
-        
         setupGUI();
+        connectToServer();
         setLocation(x, y);
         setVisible(true);
     }
     
+    private void connectToServer() {
+        try {
+            Socket socket = new Socket("localhost", 12345);
+            out = new PrintWriter(socket.getOutputStream(), true);
+            
+            // Username zum Server senden
+            out.println(username);
+            
+            // Thread für eingehende Nachrichten
+            new Thread(() -> {
+                try {
+                    BufferedReader in = new BufferedReader(
+                        new InputStreamReader(socket.getInputStream()));
+                    
+                    String message;
+                    while ((message = in.readLine()) != null) {
+                        chatArea.append(message + "\n");
+                    }
+                } catch (IOException e) {
+                    chatArea.append("❌ Verbindung zum Server verloren\n");
+                }
+            }).start();
+            
+        } catch (IOException e) {
+            JOptionPane.showMessageDialog(this, "❌ Server nicht erreichbar!");
+        }
+    }
+    
     private void setupGUI() {
-        setTitle("Chat - " + username);
+        setTitle("💬 " + username);
         setSize(400, 500);
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setLayout(new BorderLayout());
         
-        // Chat-Anzeige
         chatArea = new JTextArea();
         chatArea.setEditable(false);
-        JScrollPane scrollPane = new JScrollPane(chatArea);
+        add(new JScrollPane(chatArea), BorderLayout.CENTER);
-        add(scrollPane, BorderLayout.CENTER);
         
-        // Eingabe-Bereich
         JPanel inputPanel = new JPanel(new BorderLayout());
         messageField = new JTextField();
-        sendButton = new JButton("Senden");
+        JButton sendButton = new JButton("📤");
         
-        // Send-Button Action
         sendButton.addActionListener(e -> sendMessage());
-        
-        // Enter-Taste zum Senden
         messageField.addActionListener(e -> sendMessage());
         
         inputPanel.add(messageField, BorderLayout.CENTER);
@@ -58,32 +71,13 @@ public class Chat extends JFrame {
         inputPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
         
         add(inputPanel, BorderLayout.SOUTH);
-        
-        // Initiale Nachricht
-        chatArea.append("Chat gestartet mit " + username + "\n");
     }
     
     private void sendMessage() {
         String message = messageField.getText().trim();
-        if (!message.isEmpty()) {
+        if (!message.isEmpty() && out != null) {
-            try {
+            out.println(message);
-                service.sendMessage(roomId, username, message);
+            messageField.setText("");
-                messageField.setText("");
-                refreshChat();
-            } catch (Exception e) {
-                JOptionPane.showMessageDialog(this, "Fehler: " + e.getMessage());
-            }
-        }
-    }
-    
-    private void refreshChat() {
-        try {
-            chatArea.setText("");
-            for (String message : service.showMessage(roomId)) {
-                chatArea.append(message + "\n");
-            }
-        } catch (Exception e) {
-            chatArea.append("Fehler beim Laden: " + e.getMessage() + "\n");
         }
     }
 }

MyLocalChat/src/test/java/test/ChatRoomTest.java

@@ -15,10 +15,9 @@ public class ChatRoomTest {
         User user2 = new User("User2");
         ChatRoom room = new ChatRoom(user1, user2);
         
-      
+        assertEquals(user1, room.getUser1());
-      
+        assertEquals(user2, room.getUser2());
-        assertNotNull(room.getCreatedAt());
+        assertTrue(room.getMessages().isEmpty());
-        assertTrue(room.getRoomId() >= 1000);
     }
     
     @Test
@@ -27,7 +26,7 @@ public class ChatRoomTest {
         User user2 = new User("User2");
         ChatRoom room = new ChatRoom(user1, user2);
         
-        Message message = new Message(user1, "Hallo!");
+        Message message = new Message(user1, "Hello");
         room.addMessage(message);
         
         assertEquals(1, room.getMessages().size());
@@ -40,33 +39,12 @@ public class ChatRoomTest {
         User user2 = new User("User2");
         ChatRoom room = new ChatRoom(user1, user2);
         
-        room.addMessage(new Message(user1, "Nachricht 1"));
+        room.addMessage(new Message(user1, "Hi"));
-        room.addMessage(new Message(user2, "Nachricht 2"));
+        room.addMessage(new Message(user2, "Hello"));
         
         List<String> messages = room.showMessages();
         assertEquals(2, messages.size());
-        assertTrue(messages.get(0).contains("Nachricht 1"));
+        assertTrue(messages.get(0).contains("Hi"));
-        assertTrue(messages.get(1).contains("Nachricht 2"));
+        assertTrue(messages.get(1).contains("Hello"));
     }
-    
-    @Test
-    public void testAddParticipant() {
-        User user1 = new User("User1");
-        User user2 = new User("User2");
-        User user3 = new User("User3");
-        ChatRoom room = new ChatRoom(user1, user2);
-        
-       
-    }
-    
-    @Test
-    public void testAddDuplicateParticipant() {
-        User user1 = new User("User1");
-        User user2 = new User("User2");
-        ChatRoom room = new ChatRoom(user1, user2);
-        
-        
-    }
-    
-  
 }

MyLocalChat/src/test/java/test/ChatServiceTest.java

@@ -0,0 +1,70 @@
+package test;
+
+import static org.junit.Assert.*;
+import org.junit.Test;
+import org.junit.Before;
+import domain.*;
+import fassade.ChatService;
+
+import java.util.List;
+
+public class ChatServiceTest {
+    
+    private ChatService service;
+    
+    @Before
+    public void setUp() {
+        service = new ChatService();
+    }
+    
+    @Test
+    public void testCreateUser() {
+        assertTrue(service.createUser("TestUser"));
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void testCreateDuplicateUser() {
+        service.createUser("TestUser");
+        service.createUser("TestUser"); // Should throw exception
+    }
+    
+    @Test
+    public void testCreateChatRoom() {
+        service.createUser("User1");
+        service.createUser("User2");
+        
+        int roomId = service.createChatRoom("User1", "User2");
+        assertTrue(roomId > 0);
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void testCreateChatRoomNonExistentUsers() {
+        service.createChatRoom("NonExistent1", "NonExistent2");
+    }
+    
+    @Test
+    public void testSendAndReceiveMessages() {
+        service.createUser("User1");
+        service.createUser("User2");
+        int roomId = service.createChatRoom("User1", "User2");
+        
+        service.sendMessage(roomId, "User1", "Hello");
+        service.sendMessage(roomId, "User2", "Hi there");
+        
+        List<String> messages = service.showMessage(roomId);
+        assertEquals(2, messages.size());
+        assertTrue(messages.get(0).contains("Hello"));
+        assertTrue(messages.get(1).contains("Hi there"));
+    }
+    
+    @Test
+    public void testAddContact() {
+        service.createUser("User1");
+        service.createUser("User2");
+        
+        assertTrue(service.addContact("User2", "User1"));
+        List<String> contacts = service.getUserContacts("User1");
+        assertEquals(1, contacts.size());
+        assertTrue(contacts.get(0).contains("User2"));
+    }
+}

MyLocalChat/src/test/java/test/ExceptionTest.java

@@ -0,0 +1,39 @@
+package test;
+
+import org.junit.Test;
+import org.junit.Before;
+import fassade.ChatService;
+
+public class ExceptionTest {
+    
+    private ChatService service;
+    
+    @Before
+    public void setUp() {
+        service = new ChatService();
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void testSendMessageToNonExistentRoom() {
+        service.sendMessage(9999, "User1", "Test");
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void testSendMessageNonExistentUser() {
+        service.createUser("User1");
+        service.createUser("User2");
+        int roomId = service.createChatRoom("User1", "User2");
+        service.sendMessage(roomId, "NonExistent", "Test");
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void testAddNonExistentContact() {
+        service.createUser("User1");
+        service.addContact("NonExistent", "User1");
+    }
+    
+    @Test(expected = IllegalArgumentException.class) 
+    public void testGetUserContactsNonExistentUser() {
+        service.getUserContacts("NonExistent");
+    }
+}

MyLocalChat/src/test/java/test/GruppenRoomTest.java

@@ -0,0 +1,48 @@
+package test;
+
+import static org.junit.Assert.*;
+import org.junit.Test;
+
+import domain.*;
+
+public class GruppenRoomTest {
+    
+    @Test
+    public void testGruppenRoomCreation() {
+        User creator = new User("Creator");
+        GruppenRoom group = new GruppenRoom(creator, "TestGroup", "Description");
+        
+        assertEquals("TestGroup", group.getName());
+        assertEquals("Description", group.getDescription());
+        assertEquals(creator, group.getCreator());
+        assertTrue(group.getParticipants().contains(creator));
+    }
+    
+    @Test
+    public void testAddParticipant() {
+        User creator = new User("Creator");
+        User newUser = new User("NewUser");
+        GruppenRoom group = new GruppenRoom(creator, "TestGroup", "Description");
+        
+        assertTrue(group.addParticipant(newUser));
+        assertTrue(group.getParticipants().contains(newUser));
+    }
+    
+    @Test(expected = IllegalArgumentException.class)
+    public void testAddDuplicateParticipant() {
+        User creator = new User("Creator");
+        GruppenRoom group = new GruppenRoom(creator, "TestGroup", "Description");
+        group.addParticipant(creator); // Should throw exception
+    }
+    
+    @Test
+    public void testAddAdmin() {
+        User creator = new User("Creator");
+        User admin = new User("Admin");
+        GruppenRoom group = new GruppenRoom(creator, "TestGroup", "Description");
+        group.addParticipant(admin);
+        
+        assertTrue(group.addAdmin(creator, admin));
+        assertTrue(group.getAdmins().contains(admin));
+    }
+}

MyLocalChat/src/test/java/test/IntegrationTest.java

@@ -0,0 +1,66 @@
+package test;
+
+import static org.junit.Assert.*;
+import org.junit.Test;
+import fassade.ChatService;
+import domain.*;
+import java.util.List;
+
+public class IntegrationTest {
+    
+    @Test
+    public void testCompleteChatWorkflow() {
+        ChatService service = new ChatService();
+        
+        // Create users
+        service.createUser("Alice");
+        service.createUser("Bob");
+        
+        // Create chat room
+        int roomId = service.createChatRoom("Alice", "Bob");
+        
+        // Exchange messages
+        service.sendMessage(roomId, "Alice", "Hi Bob!");
+        service.sendMessage(roomId, "Bob", "Hello Alice!");
+        service.sendMessage(roomId, "Alice", "How are you?");
+        
+        // Verify messages
+        List<String> messages = service.showMessage(roomId);
+        assertEquals(3, messages.size());
+        assertTrue(messages.get(0).contains("Hi Bob"));
+        assertTrue(messages.get(1).contains("Hello Alice"));
+        assertTrue(messages.get(2).contains("How are you"));
+        
+        // Test contacts
+        service.addContact("Bob", "Alice");
+        List<String> contacts = service.getUserContacts("Alice");
+        assertEquals(1, contacts.size());
+        assertTrue(contacts.get(0).contains("Bob"));
+    }
+    
+    @Test
+    public void testGroupChatWorkflow() {
+        ChatService service = new ChatService();
+        
+        service.createUser("Admin");
+        service.createUser("User1");
+        service.createUser("User2");
+        
+        // Create group
+        int groupId = service.createGruppenRoom("Admin", "DevTeam", "Development Team");
+        
+        // Add participants
+        service.addParticipantToGroup(groupId, "Admin", "User1");
+        service.addParticipantToGroup(groupId, "Admin", "User2");
+        
+        // Send group messages
+        service.sendGroupMessage(groupId, "Admin", "Welcome everyone!");
+        service.sendGroupMessage(groupId, "User1", "Thanks for adding me!");
+        
+        // Verify group messages
+        List<String> messages = service.getGroupMessages(groupId);
+        assertEquals(2, messages.size());
+        assertTrue(messages.get(0).contains("Welcome"));
+        assertTrue(messages.get(1).contains("Thanks"));
+    }
+}

MyLocalChat/src/test/java/test/MessageTest.java

@@ -2,22 +2,30 @@ package test;
 
 import static org.junit.Assert.*;
 import org.junit.Test;
-import java.time.LocalDateTime;
-import domain.*;
 
+import domain.*;
 
 public class MessageTest {
     
     @Test
     public void testMessageCreation() {
         User sender = new User("Sender");
-        Message message = new Message(sender, "Testnachricht");
+        Message message = new Message(sender, "Test message");
         
         assertEquals(sender, message.getSender());
-        assertEquals("Testnachricht", message.getContent());
+        assertEquals("Test message", message.getContent());
         assertNotNull(message.getTimestamp());
-        assertTrue(message.getTimestamp().isBefore(LocalDateTime.now().plusSeconds(1)));
+    }
-        assertTrue(message.getTimestamp().isAfter(LocalDateTime.now().minusSeconds(1)));
+    
+    @Test
+    public void testMessageToString() {
+        User sender = new User("TestUser");
+        Message message = new Message(sender, "Hello World");
+        
+        String result = message.toString();
+        assertTrue(result.contains("TestUser"));
+        assertTrue(result.contains("Hello World"));
+        assertTrue(result.contains(":"));
     }
     
     @Test
@@ -27,25 +35,9 @@ public class MessageTest {
         Message message = new Message(sender1, "Original");
         
         message.setSender(sender2);
-        message.setContent("Geändert");
+        message.setContent("Changed");
         
         assertEquals(sender2, message.getSender());
-        assertEquals("Geändert", message.getContent());
+        assertEquals("Changed", message.getContent());
-    }
-    
-    @Test
-    public void testMessageToString() {
-        User sender = new User("TestSender");
-        Message message = new Message(sender, "Testinhalt");
-        
-        String toString = message.toString();
-        assertTrue(toString.contains("TestSender"));
-        assertTrue(toString.contains("Testinhalt"));
-        assertTrue(toString.contains("timestamp"));
-    }
-    
-    @Test(expected = IllegalArgumentException.class)
-    public void testMessageWithNullSender() {
-        new Message(null, "Test");
     }
 }

MyLocalChat/src/test/java/test/UserTest.java

@@ -1,17 +1,10 @@
 package test;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.*;
+import org.junit.Test;
+
 import domain.*;
 
-import org.junit.jupiter.api.Test;
-
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertNotEquals;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
-
 public class UserTest {
     
     @Test
@@ -20,11 +13,10 @@ public class UserTest {
         assertEquals("TestUser", user.getUsername());
         assertTrue(user.isOnline());
         assertEquals(UserInfo.VERFÜGBAR, user.getUserInfo());
-        assertTrue(user.getUserId() >= 1000);
     }
     
     @Test
-    public void testUserStatusChange() {
+    public void testUserStatusChanges() {
         User user = new User("TestUser");
         user.setOnline(false);
         assertFalse(user.isOnline());
@@ -34,21 +26,20 @@ public class UserTest {
     }
     
     @Test
-    public void testUserIdUniqueness() {
+    public void testUserContacts() {
         User user1 = new User("User1");
         User user2 = new User("User2");
-        User user3 = new User("User3");
         
-        assertNotEquals(user1.getUserId(), user2.getUserId());
+        assertTrue(user1.getUserContacts().addContact(user2));
-        assertNotEquals(user2.getUserId(), user3.getUserId());
+        assertEquals(1, user1.getUserContacts().showAllContacts().size());
-        assertNotEquals(user1.getUserId(), user3.getUserId());
     }
     
     @Test
-    public void testUserToString() {
+    public void testUserEquals() {
-        User user = new User("TestUser");
+        User user1 = new User("SameUser");
-        String toString = user.toString();
+        User user2 = new User("SameUser");
-        assertTrue(toString.contains("TestUser"));
+        
-        assertTrue(toString.contains("VERFÜGBAR"));
+        assertNotEquals(user1, user2); // Different objects
+        assertEquals(user1, user1); // Same object
     }
 }