debug and test

src/main/java/com/university/chat/Client/ServerListener.java

@@ -1,20 +1,42 @@
 package com.university.chat.Client;
 
+import com.university.chat.Common.ChatMessage;
+import com.university.chat.Common.FileMessage;
+import com.university.chat.Common.MessageType;
+
+import java.io.ObjectInputStream;
+
 public class ServerListener implements Runnable{
-    // TODO: store the ObjectInputStream from the user socket
+
-    //          (this should be the same input stream the
+    private ObjectInputStream in ;
-    //           chatClient created when connecting)
+
+    public ServerListener(ObjectInputStream ois){
+        this.in = ois;
+    }
 
     @Override
     public void run() {
         try {
-            // TODO: In an infinite loop read objects from the server
+            while (true){
-            //   - if it's a ChatMessage  -> print "<sender>: <content>"
+                Object objectInput = in.readObject();
-            //   - if it's a FileMessage  -> print that a file was received
+                if(objectInput instanceof ChatMessage msg){
-            //                               (filename + sender), it's already
+                    if(msg.getType() == MessageType.LOGIN_SUCCESS){
-            //                               saved to disk by the server.
+                        System.out.println("Login success");
+                    } else if (msg.getType() == MessageType.LOGIN_FAILED) {
+                        System.out.println("Login Failed");
+                    }
+                    System.out.println(msg.getSender()+ ": " + msg.getContent());
+                }
+                else if(objectInput instanceof FileMessage filemsg){
+                    System.out.println("File name: "+ filemsg.getFilename()
+                                        +"from : "+ filemsg.getSender()+ " recived.");
+                }
+
+            }
+
         } catch (Exception e){
             System.out.println("Disconnected from server");
+            System.out.println(e.getMessage());
         }
     }
 }

src/main/java/com/university/chat/Client/chatClient.java

@@ -1,26 +1,81 @@
 package com.university.chat.Client;
 
+import com.university.chat.Common.ChatMessage;
+import com.university.chat.Common.FileMessage;
+import com.university.chat.Common.MessageType;
+
+import java.io.*;
+import java.net.Socket;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Scanner;
+
 public class chatClient {
-    public static void main() {
+
-        // TODO: Connecting to the server
+
-        //  1. Create a socket and connect to the server
+    public static void main() throws IOException {
-        //  2. Create an ObjectOutputStream (out) and ObjectInputStream (in)
+        Scanner input = new Scanner(System.in);
-        //      from the socket's streams — output FIRST, then input.
+        Socket socket = new Socket("127.0.0.1" , 5000);
-        //  2. Get the username, and send a LOGIN ChatMessage with that username
+        ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
-        //  3. Start a new Thread running a ServerListener(in) so incoming
+        ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
-        //      messages are handled concurrently.
+
+        System.out.println("Connected to Server . Please enter user name:");
+        String username = input.nextLine();
+
+        out.writeObject(new ChatMessage(MessageType.LOGIN , username , "Server" , "Login message"));
+        out.flush();
+
+        ServerListener serverListener = new ServerListener(in);
+        Thread t = new Thread(serverListener);
+        t.start();
+
+
 
         while (true){
             try {
-                // TODO: Program loop — read a line from the console and act on it:
+                String promt = input.nextLine();
-                //   - "/msg <user> <text>"        -> build & send a PRIVATE_MESSAGE
+                //promt = promt.replace("<", "").replace(">", "");
-                //   - "/users"                    -> build & send a USER_LIST request
+
-                //   - "/sendfile <user> <path>"   -> read the file into a byte[]
+                String[] parts = promt.split(" " , 3);
-                //                                     (you can use TransferProgress
+
-                //                                     to show progress)
+                switch (parts[0]){
-                //                                     and send it as a FileMessage
+                    case "/msg":
-                //   - anything else               -> send a PUBLIC_MESSAGE
+                    {
-                //   Remember to flush() the output stream after writeObject().
+                        out.writeObject(new ChatMessage(MessageType.PRIVATE_MESSAGE , username
+                                , parts[1] ," \'private\' " +  parts[2]));
+                        break;
+                    }
+                    case "/users":
+                    {
+                        out.writeObject(new ChatMessage(MessageType.USER_LIST ,username
+                                , "Server" , null));
+                        out.flush();
+                        break;
+                    }
+                    case  "/sendfile":
+                    {
+                        File file = new File(String.valueOf(Path.of(parts[2])));
+                        String filename = file.getName();
+                        byte[] fileContent = Files.readAllBytes(file.toPath());
+                        out.writeObject(new FileMessage(username , parts[1] , parts[2] ,  fileContent ));
+                        out.flush();
+                        System.out.println("file send.");
+                        break;
+                    }
+                    case "/quit":
+                    {
+                        System.out.println("Goodby!");
+                        return;
+                    }
+                    default:
+                    {
+                        out.writeObject(new ChatMessage(MessageType.PUBLIC_MESSAGE , username ,
+                                "All" , promt));
+                        break;
+                    }
+                }
+                out.flush();
+
             } catch (Exception e){
                 System.out.println("command failed: " + e.getMessage());
             }

src/main/java/com/university/chat/Server/ChatServer.java

@@ -1,15 +1,32 @@
 package com.university.chat.Server;
 
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+
 public class ChatServer {
-    // TODO: declare a single shared UserManager instance (static final)
-    //         This MUST be shared by all ClientSession threads so that
-    //         broadcasting and private messaging work correctly.
 
-    public static void main(String[] args) {
+    private static final UserManager users = new UserManager();
-        // TODO: Create a ServerSocket
+    private static ServerSocket srvSocket;
 
-        // TODO: In an infinite loop:
+    public static void main(String[] args) throws IOException {
-        //  accept an incoming client connection
+
-        //  make a new thread running ClientSession for each user.
+        try {
+            srvSocket = new ServerSocket(5000);
+            System.out.println("Servre start.");
+
+            while (true){
+                Socket clientsocket = srvSocket.accept();
+                ClientSession clientSession = new ClientSession(clientsocket , users);
+                Thread t = new Thread(clientSession);
+                t.start();
+
+            }
+
+        } catch (IOException e) {
+            System.out.println(e.getMessage());
+        }finally {
+            srvSocket.close();
+        }
     }
 }

src/main/java/com/university/chat/Server/ClientSession.java

@@ -2,44 +2,89 @@ package com.university.chat.Server;
 
 import com.university.chat.Common.ChatMessage;
 import com.university.chat.Common.FileMessage;
+import com.university.chat.Common.MessageType;
 
+import java.io.File;
 import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 import java.net.Socket;
 import java.nio.file.Files;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 public class ClientSession implements Runnable {
 
     private String username;
+    private ObjectOutputStream out = null;
+    private ObjectInputStream in = null;
+    private final Socket socket;
+    private final UserManager userManage;
+    private final Lock L = new ReentrantLock();
+
+
 
     public ClientSession(Socket socket, UserManager userManager) {
-        // TODO : Create an ObjectOutputStream from socket.getOutputStream()
+        this.socket = socket;
-        //         and an ObjectInputStream from socket.getInputStream().
+        this.userManage = userManager;
+
+        try {
+            out = new ObjectOutputStream(socket.getOutputStream());
+            in = new ObjectInputStream(socket.getInputStream());
+        } catch (IOException e) {
+            System.out.println(e.getMessage());
+        }
+
     }
 
     @Override
     public void run() {
         try {
 
-            // TODO: Welcome the user (login step)
+            ChatMessage loginmsg = (ChatMessage) in.readObject();
-            //  1. Read the first object sent by the client.
+            username = loginmsg.getSender();
-            //  2. Check it's a ChatMessage with type LOGIN.
+
-            //  3. Extract the username.
+
-            //  4. Try to register the user via userManager.addUser(...).
+            if(loginmsg.getType() != MessageType.LOGIN){
-            //  5. If the username is taken, send back LOGIN_FAILED and close the socket.
+                out.writeObject(new ChatMessage(MessageType.LOGIN_FAILED , "server"
-            //  6. Otherwise, create the user's folders with FileManager.createUserFolders(...)
+                                    , username,"login failed"));
-            //      and send back LOGIN_SUCCESS.
+                socket.close();
+                return;
+            }
+
+            FileManager.createUserFolders(username);
+
+            out.writeObject(new ChatMessage(MessageType.LOGIN_SUCCESS , "server" ,
+                    username , "welcome to messanger login succes"));
+            System.out.println(username + " connected");
+
+            userManage.addUser(username , this);
+
+            while (true){
+                Object inputobj = in.readObject();
+                if(inputobj == null){
+                    continue;
+                }
+                if(inputobj instanceof ChatMessage msg){
+                    handleChatMessage(msg);
+                } else if (inputobj instanceof FileMessage filemsg) {
+                    handleFileMessage(filemsg);
+                }
+            }
 
-            // TODO: Main message loop
-            //   In a loop, call in.readObject(), you can separate messages by their type:
-            //     - if it's a ChatMessage      -> call handleChatMessage(msg)
-            //     - if it's a FileMessage      -> call handleFileMessage(fileMsg)
-            //   Keep looping until the connection is closed (an exception will be thrown).
 
         } catch (Exception e) {
             System.out.println("Disconnected: " + username);
+            System.out.println(e.getMessage());
         } finally {
-            // TODO: Remove the user from UserManager so they no longer
+            if(username != null) {
-            //        receive broadcasts or appear in users list
+                userManage.removeUser(username);
+            }
+            try {
+                socket.close();
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
         }
     }
 
@@ -47,13 +92,26 @@ public class ClientSession implements Runnable {
     private void handleChatMessage(ChatMessage msg) throws IOException {
         switch (msg.getType()) {
             case PUBLIC_MESSAGE -> {
-                // TODO: Broadcast this message to every connected client.
+                for(ClientSession cs : userManage.getAllSessions()){
+                    if(cs != this){
+                        cs.sendMessage(msg);
+                    }
+                }
             }
             case PRIVATE_MESSAGE -> {
-                // TODO: Forward this message to the receiver user.
+                ClientSession cs = userManage.getUser(msg.getReceiver());
+                if (cs != null) {
+                    cs.sendMessage(msg);
+                }
             }
             case USER_LIST -> {
-                // TODO: Reply to the requester with the list of online users.
+                ClientSession cs = userManage.getUser(msg.getSender());
+                ChatMessage listReply = new ChatMessage(MessageType.USER_LIST, "server",
+                        username, userManage.listUsers());
+
+                if (cs != null) {
+                    cs.sendMessage(listReply);
+                }
             }
         }
     }
@@ -66,6 +124,28 @@ public class ClientSession implements Runnable {
         Files.write(sentPath, fileMsg.getData());
         Files.write(recvPath, fileMsg.getData());
 
-        // TODO: Forward the received file-message to the destination user.
+        ClientSession cs = userManage.getUser(fileMsg.getReceiver());
+        if(cs != null){
+            cs.sendMessage(fileMsg);
+        }
+        System.out.println("Server received file: " + fileMsg.getFilename() + " with size: " + fileMsg.getData().length);
+
     }
+
+
+
+    public void sendMessage(Object object) {
+        try {
+            L.lock();
+            out.writeObject(object);
+            out.flush();
+        }
+        catch (IOException e) {
+            System.out.println(e.getMessage());
+        }
+        finally {
+            L.unlock();
+        }
+    }
+
 }