From 2d9883e6844bdc927a6fa820996ed3029ca5d970 Mon Sep 17 00:00:00 2001
From: Parmis Jamami <Parmisjamami@gmail.com>
Date: Tue, 23 Jun 2026 23:41:25 +0330
Subject: [PATCH] implement ChatClient

---
 .../university/chat/Client/chatClient.java    | 123 ++++++++++++++----
 1 file changed, 100 insertions(+), 23 deletions(-)

diff --git a/src/main/java/com/university/chat/Client/chatClient.java b/src/main/java/com/university/chat/Client/chatClient.java
index dae0bad..955e4c7 100644
--- a/src/main/java/com/university/chat/Client/chatClient.java
+++ b/src/main/java/com/university/chat/Client/chatClient.java
@@ -1,29 +1,106 @@
 package com.university.chat.Client;
 
-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.
+import com.university.chat.Common.ChatMessage;
+import com.university.chat.Common.FileMessage;
+import com.university.chat.Common.MessageType;
 
-        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());
+import java.io.File;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.net.Socket;
+import java.nio.file.Files;
+import java.util.Scanner;
+
+public class chatClient {
+
+    public static void main(String[] args) {
+        try {
+            Socket socket = new Socket("localhost", 5000);
+
+            ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());
+            ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
+
+            Scanner scanner = new Scanner(System.in);
+
+            System.out.print("Enter username: ");
+            String username = scanner.nextLine();
+
+            ChatMessage loginMessage = new ChatMessage(
+                    MessageType.LOGIN,
+                    username,
+                    null,
+                    ""
+            );
+
+            out.writeObject(loginMessage);
+            out.flush();
+
+            new Thread(new ServerListener(in)).start();
+
+            while (true) {
+                try {
+                    String line = scanner.nextLine();
+
+                    if (line.startsWith("/msg ")) {
+                        String[] parts = line.split(" ", 3);
+
+                        ChatMessage privateMessage = new ChatMessage(
+                                MessageType.PRIVATE_MESSAGE,
+                                username,
+                                parts[1],
+                                parts[2]
+                        );
+
+                        out.writeObject(privateMessage);
+                    }
+
+                    else if (line.equals("/users")) {
+                        ChatMessage userListMessage = new ChatMessage(
+                                MessageType.USER_LIST,
+                                username,
+                                null,
+                                ""
+                        );
+
+                        out.writeObject(userListMessage);
+                    }
+
+                    else if (line.startsWith("/sendfile ")) {
+                        String[] parts = line.split(" ", 3);
+
+                        File file = new File(parts[2]);
+                        byte[] data = Files.readAllBytes(file.toPath());
+
+                        FileMessage fileMessage = new FileMessage(
+                                username,
+                                parts[1],
+                                file.getName(),
+                                data
+                        );
+
+                        out.writeObject(fileMessage);
+                    }
+
+                    else {
+                        ChatMessage publicMessage = new ChatMessage(
+                                MessageType.PUBLIC_MESSAGE,
+                                username,
+                                null,
+                                line
+                        );
+
+                        out.writeObject(publicMessage);
+                    }
+
+                    out.flush();
+
+                } catch (Exception e) {
+                    System.out.println("command failed: " + e.getMessage());
+                }
             }
+
+        } catch (Exception e) {
+            System.out.println("Could not connect to server");
         }
     }
-}
+}
\ No newline at end of file