implement chatClient.java

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

@@ -1,7 +1,18 @@
 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.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Scanner;
+
 public class chatClient {
-    public static void main() {
+    public static void main() throws IOException {
         // TODO: Connecting to the server
         //  1. Create a socket and connect to the server
         //  2. Create an ObjectOutputStream (out) and ObjectInputStream (in)
@@ -10,6 +21,22 @@ public class chatClient {
         //  3. Start a new Thread running a ServerListener(in) so incoming
         //      messages are handled concurrently.
 
+        Socket socket = new Socket("127.0.0.1", 5000);
+        ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
+        ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
+
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your username: ");
+        String username = input.nextLine();
+
+        ChatMessage chatMessage = new ChatMessage(MessageType.LOGIN, username, null, "");
+        out.writeObject(chatMessage);
+        out.flush();
+
+        Thread thread = new Thread(new ServerListener(in));
+        thread.start();
+
+
         while (true){
             try {
                 // TODO: Program loop — read a line from the console and act on it:
@@ -21,6 +48,38 @@ public class chatClient {
                 //                                     and send it as a FileMessage
                 //   - anything else               -> send a PUBLIC_MESSAGE
                 //   Remember to flush() the output stream after writeObject().
+
+                String line = input.nextLine();
+                if(line.equals("/users")) {
+                    chatMessage = new ChatMessage(MessageType.USER_LIST, username, null, null);
+                    out.writeObject(chatMessage);
+                    out.flush();
+                }
+                else if(line.startsWith("/msg")) {
+                    String[] parts = line.split(" ", 3);
+                    chatMessage = new ChatMessage(MessageType.PRIVATE_MESSAGE,
+                            username, parts[1], parts[2]);
+                    out.writeObject(chatMessage);
+                    out.flush();
+                }
+                else if(line.startsWith("/sendfile")) {
+                    String[] parts = line.split(" ", 3);
+                    String receiver = parts[1];
+                    String path = parts[2];
+
+                    Path filePath = Paths.get(path);
+                    byte[] data = Files.readAllBytes(filePath);
+                    FileMessage fileMessage = new FileMessage(username, receiver, filePath.getFileName().toString(), data);
+
+                    out.writeObject(fileMessage);
+                    out.flush();
+                }
+                else {
+                    chatMessage = new ChatMessage(MessageType.PUBLIC_MESSAGE, username, null, line);
+                    out.writeObject(chatMessage);
+                    out.flush();
+                }
+
             } catch (Exception e){
                 System.out.println("command failed: " + e.getMessage());
             }