implement ChatClient

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

@@ -1,29 +1,106 @@
 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.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() {
+
-        // TODO: Connecting to the server
+    public static void main(String[] args) {
-        //  1. Create a socket and connect to the server
+        try {
-        //  2. Create an ObjectOutputStream (out) and ObjectInputStream (in)
+            Socket socket = new Socket("localhost", 5000);
-        //      from the socket's streams — output FIRST, then input.
+
-        //  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.
+
+            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 {
-                // TODO: Program loop — read a line from the console and act on it:
+                    String line = scanner.nextLine();
-                //   - "/msg <user> <text>"        -> build & send a PRIVATE_MESSAGE
+
-                //   - "/users"                    -> build & send a USER_LIST request
+                    if (line.startsWith("/msg ")) {
-                //   - "/sendfile <user> <path>"   -> read the file into a byte[]
+                        String[] parts = line.split(" ", 3);
-                //                                     (you can use TransferProgress
+
-                //                                     to show progress)
+                        ChatMessage privateMessage = new ChatMessage(
-                //                                     and send it as a FileMessage
+                                MessageType.PRIVATE_MESSAGE,
-                //   - anything else               -> send a PUBLIC_MESSAGE
+                                username,
-                //   Remember to flush() the output stream after writeObject().
+                                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");
+        }
     }
 }