implement ClientSession.java

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

@@ -2,18 +2,28 @@ 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.IOException;
+import java.io.*;
 import java.net.Socket;
 import java.nio.file.Files;
 
 public class ClientSession implements Runnable {
 
     private String username;
+    UserManager userManager = null;
+    Socket socket = null;
+    ObjectOutputStream outputStream = null;
+    ObjectInputStream inputStream = null;
 
-    public ClientSession(Socket socket, UserManager userManager) {
+    public ClientSession(Socket socket, UserManager userManager) throws IOException {
         // TODO : Create an ObjectOutputStream from socket.getOutputStream()
         //         and an ObjectInputStream from socket.getInputStream().
+        this.userManager = userManager;
+        this.socket = socket;
+        outputStream = new ObjectOutputStream(socket.getOutputStream());
+        outputStream.flush();
+        inputStream = new ObjectInputStream(socket.getInputStream());
     }
 
     @Override
@@ -29,17 +39,49 @@ public class ClientSession implements Runnable {
             //  6. Otherwise, create the user's folders with FileManager.createUserFolders(...)
             //      and send back LOGIN_SUCCESS.
 
+            System.out.println("Welcome");
+            Object object = inputStream.readObject();
+
+            if(object instanceof ChatMessage) {
+                ChatMessage chatMessage = (ChatMessage) object;
+
+                if(chatMessage.getType().equals(MessageType.LOGIN)) {
+                    username = chatMessage.getSender();
+
+                    if (userManager.addUser(username, this)) {
+                        FileManager.createUserFolders(username);
+                        outputStream.writeObject(MessageType.LOGIN_SUCCESS);
+                        outputStream.flush();
+                    }
+                    else {
+                        outputStream.writeObject(MessageType.LOGIN_FAILED);
+                        outputStream.flush();
+                        socket.close();
+                    }
+                }
+            }
+
             // 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).
 
+            while (!socket.isClosed()) {
+                object = inputStream.readObject();
+
+                if(object instanceof ChatMessage)
+                    handleChatMessage((ChatMessage) object);
+                else if(object instanceof FileMessage)
+                    handleFileMessage((FileMessage) object);
+            }
+
         } catch (Exception e) {
             System.out.println("Disconnected: " + username);
         } finally {
             // TODO: Remove the user from UserManager so they no longer
             //        receive broadcasts or appear in users list
+            userManager.removeUser(username);
         }
     }
 
@@ -48,12 +90,21 @@ public class ClientSession implements Runnable {
         switch (msg.getType()) {
             case PUBLIC_MESSAGE -> {
                 // TODO: Broadcast this message to every connected client.
+                for (ClientSession clientSession : userManager.getAllSessions()) {
+                    clientSession.outputStream.writeObject(msg);
+                    clientSession.outputStream.flush();
+                }
             }
             case PRIVATE_MESSAGE -> {
                 // TODO: Forward this message to the receiver user.
+                userManager.getUser(msg.getReceiver()).outputStream.writeObject(msg);
+                userManager.getUser(msg.getReceiver()).outputStream.flush();
             }
             case USER_LIST -> {
                 // TODO: Reply to the requester with the list of online users.
+                ChatMessage chatMessage = new ChatMessage(MessageType.USER_LIST, "UserManager", username, userManager.listUsers());
+                outputStream.writeObject(chatMessage);
+                outputStream.flush();
             }
         }
     }
@@ -67,5 +118,8 @@ public class ClientSession implements Runnable {
         Files.write(recvPath, fileMsg.getData());
 
         // TODO: Forward the received file-message to the destination user.
+        ClientSession recieverSession = userManager.getUser(fileMsg.getReceiver());
+        recieverSession.outputStream.writeObject(fileMsg);
+        recieverSession.outputStream.flush();
     }
 }