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

@@ -17,7 +17,7 @@ public class ServerListener implements Runnable{
     @Override
     public void run() {
         try {
-            
+
             while (true) {
                 Object obj = in.readObject();
                 if (obj instanceof ChatMessage msg) {

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

@@ -1,29 +1,97 @@
 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;
+import java.io.ObjectOutputStream;
+import java.net.Socket;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+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
-        //  2. Create an ObjectOutputStream (out) and ObjectInputStream (in)
-        //      from the socket's streams — output FIRST, then input.
-        //  2. Get the username, and send a LOGIN ChatMessage with that username
-        //  3. Start a new Thread running a ServerListener(in) so incoming
-        //      messages are handled concurrently.
 
-        while (true){
-            try {
-                // TODO: Program loop — read a line from the console and act on it:
-                //   - "/msg <user> <text>"        -> build & send a PRIVATE_MESSAGE
-                //   - "/users"                    -> build & send a USER_LIST request
-                //   - "/sendfile <user> <path>"   -> read the file into a byte[]
-                //                                     (you can use TransferProgress
-                //                                     to show progress)
-                //                                     and send it as a FileMessage
-                //   - anything else               -> send a PUBLIC_MESSAGE
-                //   Remember to flush() the output stream after writeObject().
-            } catch (Exception e){
-                System.out.println("command failed: " + e.getMessage());
+        String host = "localhost";
+        int port = 9000;
+
+        try {
+
+            Socket socket = new Socket(host, port);
+            ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
+            ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
+
+            Scanner sc = new Scanner(System.in);
+            System.out.println("Enter your username: ");
+            String username = sc.nextLine();
+
+            out.writeObject(new ChatMessage(MessageType.LOGIN, username, null, null));
+            out.flush();
+
+            Object loginResponse = in.readObject();
+            if (loginResponse instanceof ChatMessage response) {
+                if (response.getType() == MessageType.LOGIN_FAILED) {
+                    System.out.println("Login failed: " + response.getContent());
+                    socket.close();
+                    return;
+                }
+                System.out.println(response.getContent());
             }
+
+            Thread listenerThread = new Thread(new ServerListener(in));
+            listenerThread.setDaemon(true);
+            listenerThread.start();
+
+            while (true) {
+                try {
+                    String line = sc.nextLine();
+
+                    if (line.startsWith("/msg ")) {
+                        String[] parts = line.split(" ", 3);
+                        if (parts.length < 3) {
+                            System.out.println("Usage: /msg <user> <text>");
+                            continue;
+                        }
+                        String target  = parts[1];
+                        String text = parts[2];
+                        out.writeObject(new ChatMessage(MessageType.PRIVATE_MESSAGE, username, target, text));
+                        out.flush();
+
+                    } else if (line.equals("/users")) {
+                        out.writeObject(new ChatMessage(MessageType.USER_LIST, username, null, null));
+                        out.flush();
+
+                    } else if (line.startsWith("/sendfile ")) {
+                        String[] parts = line.split(" ", 3);
+                        if (parts.length < 3) {
+                            System.out.println("Usage: /sendfile <user> <filepath>");
+                            continue;
+                        }
+                        String target = parts[1];
+                        String filePath = parts[2];
+
+                        byte[] fileData = Files.readAllBytes(Paths.get(filePath));
+                        String filename = Paths.get(filePath).getFileName().toString();
+
+                        TransferProgress progress = new TransferProgress(fileData.length);
+                        progress.update(fileData.length);
+
+                        out.writeObject(new FileMessage(username, target, filename, fileData));
+                        out.flush();
+                        System.out.println("File '" + filename + "' sent to " + target + ".");
+
+                    } else {
+                        out.writeObject(new ChatMessage(MessageType.PUBLIC_MESSAGE, username, null, line));
+                        out.flush();
+                    }
+                } catch (Exception e) {
+                    System.out.println("command failed: " + e.getMessage());
+                }
+            }
+        } catch (Exception e) {
+            System.out.println(" could not connect to " + host + ":" + port);
         }
     }
 }