Work on add contact to contact list

src/main/java/org/to/telegramfinalproject/Client/ActionHandler.java

@@ -1,17 +1,17 @@
 package org.to.telegramfinalproject.Client;
 
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.to.telegramfinalproject.Models.ChatEntry;
+import org.to.telegramfinalproject.Models.ContactRequestModel;
+import org.to.telegramfinalproject.Models.SearchRequestModel;
+import org.to.telegramfinalproject.Models.SearchResultModel;
+
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.time.LocalDateTime;
-import java.util.ArrayList;
+import java.util.*;
-import java.util.List;
-import java.util.Scanner;
-
-import org.json.JSONArray;
-import org.json.JSONObject;
-import org.to.telegramfinalproject.Models.ChatEntry;
-import org.to.telegramfinalproject.Models.SearchRequestModel;
 
 public class ActionHandler {
     private final PrintWriter out;
@@ -26,41 +26,43 @@ public class ActionHandler {
 
     public void loginHandler() {
         System.out.println("Login form: \n");
-        System.out.println("Username: ");
+        System.out.print("Username: ");
         String username = this.scanner.nextLine();
-        System.out.println("Password: ");
+        System.out.print("Password: ");
         String password = this.scanner.nextLine();
+
         JSONObject request = new JSONObject();
         request.put("action", "login");
         request.put("user_id", JSONObject.NULL);
         request.put("username", username);
         request.put("password", password);
         request.put("profile_name", JSONObject.NULL);
+
         this.send(request);
     }
 
     public void register() {
         System.out.println("Register form: \n");
-        System.out.println("Username: ");
+        System.out.print("Username: ");
         String username = this.scanner.nextLine();
-        System.out.println("User id: ");
+        System.out.print("User id: ");
         String user_id = this.scanner.nextLine();
-        System.out.println("Password: ");
+        System.out.print("Password: ");
         String password = this.scanner.nextLine();
-        System.out.println("Profile name: ");
+        System.out.print("Profile name: ");
         String profile_name = this.scanner.nextLine();
+
         JSONObject request = new JSONObject();
         request.put("action", "register");
         request.put("user_id", user_id);
         request.put("username", username);
         request.put("password", password);
         request.put("profile_name", profile_name);
+
         this.send(request);
     }
 
-
     public void search() {
-
         System.out.print("Enter keyword to search: ");
         String keyword = scanner.nextLine();
 
@@ -71,10 +73,27 @@ public class ActionHandler {
 
         String userId = Session.currentUser.getString("user_id");
         SearchRequestModel model = new SearchRequestModel("search", keyword, userId);
-
         send(model.toJson());
     }
 
+    private void addContact(UUID contactId) {
+        JSONObject req = new JSONObject();
+        req.put("action", "add_contact");
+        req.put("user_id", Session.currentUser.getString("user_id"));
+        req.put("contact_id", contactId.toString());
+        send(req);
+    }
+
+
+    private void joinGroupOrChannel(String type, String id) {
+        JSONObject req = new JSONObject();
+        req.put("action", "join_" + type);
+        req.put("user_id", Session.currentUser.getString("user_id"));
+        req.put("id", id);
+        send(req);
+    }
+
+
     private void send(JSONObject request) {
         try {
             if (!request.has("action") || request.isNull("action")) {
@@ -83,17 +102,21 @@ public class ActionHandler {
             }
 
             String action = request.getString("action");
-
             this.out.println(request.toString());
 
             String responseText = this.in.readLine();
+            if (responseText == null) {
+                System.out.println("No response from server.");
+                return;
+            }
 
-            if (responseText != null) {
             JSONObject response = new JSONObject(responseText);
             System.out.println("Server response: " + response.getString("message"));
-                String status = response.getString("status");
 
-                if (status.equals("success") && response.has("data") && !response.isNull("data")) {
+            String status = response.getString("status");
+            if (!"success".equals(status) || !response.has("data") || response.isNull("data"))
+                return;
+
             switch (action) {
                 case "login":
                 case "register":
@@ -108,7 +131,8 @@ public class ActionHandler {
                                 chat.getString("name"),
                                 chat.getString("image_url"),
                                 chat.getString("type"),
-                                        chat.isNull("last_message_time") ? null : LocalDateTime.parse(chat.getString("last_message_time"))
+                                chat.isNull("last_message_time") ? null :
+                                        LocalDateTime.parse(chat.getString("last_message_time"))
                         );
                         chatList.add(entry);
                     }
@@ -123,73 +147,77 @@ public class ActionHandler {
                         System.out.println("No results found.");
                     } else {
                         System.out.println("\nSearch Results:");
-                                for (Object obj : results) {
+                        for (int i = 0; i < results.length(); i++) {
-                                    JSONObject item = (JSONObject) obj;
+                            JSONObject item = results.getJSONObject(i);
-                                    if (item.getString("type").equals("message")) {
+                            String type = item.getString("type");
-                                        System.out.println("- [message] \"" + item.getString("content") + "\""
+                            if (type.equals("message")) {
-                                                + " (from: " + item.getString("sender") + ", at: " + item.getString("time") + ")");
+                                System.out.println((i + 1) + ". [message] \"" + item.getString("content") + "\""
+                                        + " (from: " + item.optString("sender", "N/A") + ", at: " + item.getString("time") + ")");
                             } else {
-                                        System.out.println("- [" + item.getString("type") + "] "
+                                System.out.println((i + 1) + ". [" + type + "] "
                                         + item.getString("name") + " (ID: " + item.getString("id") + ")");
                             }
+                        }
 
+                        System.out.print("Select a result number to interact: ");
+                        int index = Integer.parseInt(scanner.nextLine()) - 1;
+                        if (index < 0 || index >= results.length()) return;
+
+                        JSONObject selected = results.getJSONObject(index);
+                        String type = selected.getString("type");
+                        switch (type) {
+                            case "user" -> {
+                                UUID contactId = UUID.fromString(selected.getString("uuid"));  // ✅ درست
+                                addContact(contactId);
+                            }
+
+                            case "group", "channel" -> {
+                                joinGroupOrChannel(selected.getString("type"), selected.getString("uuid"));  // ✅
+                            }
+
+                            default -> System.out.println("No interaction available for type: " + type);
                         }
                     }
                     break;
 
+
+
                 case "get_messages":
+                    // Optional: handle later
                     break;
             }
-                }
-
-            } else {
-                System.out.println("No response from server.");
-            }
 
         } catch (IOException e) {
-            System.err.println("Error while communicating with server: " + e.getMessage());
+            System.err.println("Error communicating with server: " + e.getMessage());
         } catch (Exception e) {
             System.err.println("Client error: " + e.getMessage());
             e.printStackTrace();
         }
     }
 
-
+    public void userMenu(UUID internal_uuid) {
-
-
-    public void userMenu() {
         while (true) {
             System.out.println("\nUser Menu:");
             System.out.println("1. Show chat list");
             System.out.println("2. Search");
-            System.out.println("3. Logout");
+            System.out.println("3. Add contact");
-
+            System.out.println("4. Logout");
             System.out.print("Choose an option: ");
             String choice = scanner.nextLine();
 
             switch (choice) {
-
+                case "1" -> showChatListAndSelect();
-                case "1":
+                case "2" -> search();
-                    showChatListAndSelect();
+                case "3" -> addContact(internal_uuid);
-                    break;
+                case "4" -> {
-                case "2" :
-                    search();
-                    break;
-
-                case "3":
-
                     logout();
-
                     return;
-                default:
+                }
-                    System.out.println("Invalid choice.");
+                default -> System.out.println("Invalid choice.");
             }
         }
     }
 
-
-
-
     public void showChatListAndSelect() {
         if (Session.chatList == null || Session.chatList.isEmpty()) {
             System.out.println("No chats available.");
@@ -199,8 +227,11 @@ public class ActionHandler {
         System.out.println("\nYour Chats:");
         for (int i = 0; i < Session.chatList.size(); i++) {
             ChatEntry entry = Session.chatList.get(i);
-            String time = entry.getLastMessageTime() == null ? "No messages yet" : entry.getLastMessageTime().toString();
+            String time = (entry.getLastMessageTime() == null)
-            System.out.println((i + 1) + ". [" + entry.getType() + "] " + entry.getName() + " - Last: " + time);
+                    ? "No messages yet"
+                    : entry.getLastMessageTime().toString();
+            System.out.println((i + 1) + ". [" + entry.getType() + "] " +
+                    entry.getName() + " - Last: " + time);
         }
 
         System.out.print("Select a chat by number: ");
@@ -215,24 +246,20 @@ public class ActionHandler {
         openChat(selected);
     }
 
-
     private void openChat(ChatEntry chat) {
         JSONObject request = new JSONObject();
         request.put("action", "get_messages");
         request.put("receiver_id", chat.getId());
         request.put("receiver_type", chat.getType());
-
         send(request);
     }
 
-
-
     public void logout() {
         if (Session.currentUser != null && Session.currentUser.has("user_id")) {
             JSONObject request = new JSONObject();
-            String userId = Session.currentUser.getString("internalUUID");
             request.put("action", "logout");
-            request.put("user_id",userId);
+            request.put("user_id", Session.currentUser.getString("internalUUID"));
+
             send(request);
             Session.currentUser = null;
             Session.chatList = null;
@@ -241,5 +268,6 @@ public class ActionHandler {
         }
     }
 
-}
 
+
+}

src/main/java/org/to/telegramfinalproject/Client/IncomingMessageListener.java

@@ -0,0 +1,86 @@
+package org.to.telegramfinalproject.Client;
+
+
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+
+public class IncomingMessageListener implements Runnable {
+    private final BufferedReader in;
+
+    public IncomingMessageListener(BufferedReader in) {
+        this.in = in;
+    }
+
+    @Override
+    public void run() {
+        try {
+            String line;
+            while ((line = in.readLine()) != null) {
+                JSONObject response = new JSONObject(line);
+
+                if (!response.has("action")) continue;
+                String action = response.getString("action");
+
+                switch (action) {
+                    case "new_message" -> {
+                        JSONObject msg = response.getJSONObject("data");
+                        System.out.println("\n🔔 New Message:");
+                        System.out.println("From: " + msg.getString("sender"));
+                        System.out.println("Time: " + msg.getString("time"));
+                        System.out.println("Content: " + msg.getString("content"));
+                        System.out.print(">> ");
+                    }
+
+                    case "message_edited" -> {
+                        JSONObject msg = response.getJSONObject("data");
+                        System.out.println("\n✏️ Message Edited:");
+                        System.out.println("ID: " + msg.getString("message_id"));
+                        System.out.println("New Content: " + msg.getString("new_content"));
+                        System.out.println("Edit Time: " + msg.getString("edit_time"));
+                        System.out.print(">> ");
+                    }
+
+                    case "message_deleted" -> {
+                        JSONObject msg = response.getJSONObject("data");
+                        System.out.println("\n🗑️ Message Deleted:");
+                        System.out.println("Message ID: " + msg.getString("message_id"));
+                        System.out.print(">> ");
+                    }
+
+                    case "status_change" -> {
+                        JSONObject msg = response.getJSONObject("data");
+                        System.out.println("\n🔄 User Status Changed:");
+                        System.out.println("User: " + msg.getString("user_id"));
+                        System.out.println("Status: " + msg.getString("status"));
+                        System.out.print(">> ");
+                    }
+
+                    case "system_notification" -> {
+                        JSONObject msg = response.getJSONObject("data");
+                        System.out.println("\n⚠️ System Notification:");
+                        System.out.println(msg.getString("content"));
+                        System.out.print(">> ");
+                    }
+
+                    case "contact_added" ->{
+                        System.out.println("\n🔔 You were added by a new contact: " + response.getString("user_id"));
+                        System.out.print(">> ");
+                    }
+
+
+
+                    default -> {
+                        if (!action.equals("search")) {  // ignore action: search
+                            System.out.println("\n❓ Unknown action received: " + action);
+                            System.out.print(">> ");
+                        }
+                    }
+
+                }
+            }
+        } catch (Exception e) {
+            System.out.println("🔴 Listener stopped: " + e.getMessage());
+        }
+    }
+}

src/main/java/org/to/telegramfinalproject/Client/TelegramClient.java

@@ -8,10 +8,11 @@ import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.net.Socket;
 import java.util.Scanner;
+import java.util.UUID;
 
 public class TelegramClient {
     private static final String SERVER_HOST = "localhost";
-    private static final int SERVER_PORT = 12345;
+    private static final int SERVER_PORT = 8000;
     private Socket socket;
     private BufferedReader in;
     private PrintWriter out;
@@ -51,7 +52,11 @@ public class TelegramClient {
                     this.handler.loginHandler();
                     if (Session.currentUser != null) {
                         System.out.println("Login successful.");
-                        this.handler.userMenu();
+                        UUID internalId = UUID.fromString(Session.currentUser.getString("internalUUID"));
+                        //Thread listenerThread = new Thread(new IncomingMessageListener(in));
+                        //listenerThread.setDaemon(true);
+                       //listenerThread.start();
+                        this.handler.userMenu(internalId);
 
                     } else {
                         System.out.println("Login failed.");

src/main/java/org/to/telegramfinalproject/Database/ChannelDatabase.java

@@ -75,4 +75,115 @@ public class ChannelDatabase {
         }
         return result;
     }
+
+
+
+    public static List<UUID> getSubscriberUUIDs(UUID channelInternalUUID) {
+        List<UUID> subscriberIds = new ArrayList<>();
+        String sql = "SELECT user_id FROM channel_subscribe WHERE channel_id = ?";
+
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, channelInternalUUID);
+
+            try (ResultSet rs = stmt.executeQuery()) {
+                while (rs.next()) {
+                    subscriberIds.add((UUID) rs.getObject("user_id"));
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        return subscriberIds;
+    }
+
+    public static Channel findByChannelId(String channelId) {
+        String sql = "SELECT * FROM channels WHERE channel_id = ?";
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setString(1, channelId);
+            ResultSet rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                Channel channel = new Channel();
+                channel.setInternal_uuid(UUID.fromString(rs.getString("internal_uuid")));
+                channel.setChannel_id(rs.getString("channel_id"));
+                channel.setChannel_name(rs.getString("channel_name"));
+                channel.setImage_url(rs.getString("image_url"));
+                channel.setCreator_id(UUID.fromString(rs.getString("creator_id")));
+                channel.setDescription(rs.getString("description"));
+                channel.setCreated_at(rs.getTimestamp("created_at").toLocalDateTime());
+                return channel;
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+
+
+    public static boolean isUserSubscribed(UUID userId, UUID channelInternalId) {
+        String sql = "SELECT * FROM channel_subscribe WHERE user_id = ? AND channel_id = ?";
+        try (Connection conn = ConnectionDb.connect(); PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, userId);
+            stmt.setObject(2, channelInternalId);
+            ResultSet rs = stmt.executeQuery();
+            return rs.next();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+
+    public static void addSubscriber(UUID channelInternalId, UUID userId) {
+        String sql = "INSERT INTO channel_subscribe (channel_id, user_id) VALUES (?, ?) ON CONFLICT DO NOTHING";
+        try (Connection conn = ConnectionDb.connect(); PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, channelInternalId);
+            stmt.setObject(2, userId);
+            stmt.executeUpdate();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+
+    public static UUID findInternalUUIDByChannelId(String channelId) {
+        String sql = "SELECT internal_uuid FROM channels WHERE channel_id = ?";
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setString(1, channelId);
+            ResultSet rs = stmt.executeQuery();
+            if (rs.next()) {
+                return (UUID) rs.getObject("internal_uuid");
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+    public static boolean addSubscriberToChannel(UUID userId, UUID channelUUID) {
+        String sql = """
+        INSERT INTO channel_subscribers (channel_id, user_id)
+        VALUES (?, ?)
+        ON CONFLICT DO NOTHING
+    """;
+
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, channelUUID);
+            stmt.setObject(2, userId);
+            return stmt.executeUpdate() > 0;
+        } catch (SQLException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+
 }

src/main/java/org/to/telegramfinalproject/Database/ContactDatabase.java

@@ -16,13 +16,17 @@ public class ContactDatabase {
         return ConnectionDb.connect();
     }
 
+    public static boolean addContact(UUID userId, UUID contactId) {
+        String sql = """
+        INSERT INTO contacts (user_id, contact_id)
+        VALUES (?, ?)
+        ON CONFLICT DO NOTHING
+    """;
 
-    public boolean addContact(UUID user_id, UUID contact_id) {
+        try (Connection conn = ConnectionDb.connect();
-        String sql = "INSERT INTO contacts (user_id, contact_id) VALUES (?, ?) ON CONFLICT DO NOTHING";
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
-        try (Connection connection = getConnection()) {
+            stmt.setObject(1, userId);
-            PreparedStatement stmt = connection.prepareStatement(sql);
+            stmt.setObject(2, contactId);
-            stmt.setObject(1, user_id);
-            stmt.setObject(2,contact_id);
             return stmt.executeUpdate() > 0;
         } catch (SQLException e) {
             e.printStackTrace();
@@ -31,6 +35,7 @@ public class ContactDatabase {
     }
 
 
+
     public boolean removeContact(UUID user_id, UUID contact_id)  {
         String sql = "DELETE FROM contacts WHERE user_id = ? AND contact_id = ?";
         try (Connection connection = getConnection()) {
@@ -94,7 +99,7 @@ public class ContactDatabase {
     }
 
 
-    public boolean existsContact(UUID user_id, UUID contact_id) {
+    public static boolean existsContact(UUID user_id, UUID contact_id) {
         String sql = "SELECT 1 FROM contacts WHERE user_id = ? AND contact_id = ? LIMIT 1"; // stop searching when find the first item in DB(LIMIT 1)
         try (Connection connection = getConnection()) {
             PreparedStatement stmt = connection.prepareStatement(sql);
@@ -155,4 +160,6 @@ public class ContactDatabase {
     }
 
 
+
+
 }

src/main/java/org/to/telegramfinalproject/Database/GroupDatabase.java

@@ -76,5 +76,111 @@ public class GroupDatabase {
         return result;
     }
 
+    public static List<UUID> getMemberUUIDs(UUID groupInternalUUID) {
+        List<UUID> memberIds = new ArrayList<>();
+        String sql = "SELECT user_id FROM group_members WHERE group_id = ?";
+
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, groupInternalUUID);
+
+            try (ResultSet rs = stmt.executeQuery()) {
+                while (rs.next()) {
+                    memberIds.add((UUID) rs.getObject("user_id"));
+                }
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        return memberIds;
+    }
+
+
+
+    public static Group findByGroupId(String groupId) {
+        String sql = "SELECT * FROM groups WHERE group_id = ?";
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setString(1, groupId);
+            ResultSet rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                Group group = new Group();
+                group.setInternal_uuid(UUID.fromString(rs.getString("internal_uuid")));
+                group.setGroup_id(rs.getString("group_id"));
+                group.setGroup_name(rs.getString("group_name"));
+                group.setImage_url(rs.getString("image_url"));
+                group.setCreator_id(UUID.fromString(rs.getString("creator_id")));
+                group.setDescription(rs.getString("description"));
+                group.setCreated_at(rs.getTimestamp("created_at").toLocalDateTime());
+                return group;
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+
+    public static boolean isUserInGroup(UUID userId, UUID groupInternalId) {
+        String sql = "SELECT * FROM group_members WHERE user_id = ? AND group_id = ?";
+        try (Connection conn = ConnectionDb.connect(); PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, userId);
+            stmt.setObject(2, groupInternalId);
+            ResultSet rs = stmt.executeQuery();
+            return rs.next();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+
+
+    public static void addMember(UUID groupInternalId, UUID userId) {
+        String sql = "INSERT INTO group_members (group_id, user_id) VALUES (?, ?) ON CONFLICT DO NOTHING";
+        try (Connection conn = ConnectionDb.connect(); PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, groupInternalId);
+            stmt.setObject(2, userId);
+            stmt.executeUpdate();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+    public static UUID findInternalUUIDByGroupId(String groupId) {
+        String sql = "SELECT internal_uuid FROM groups WHERE group_id = ?";
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setString(1, groupId);
+            ResultSet rs = stmt.executeQuery();
+            if (rs.next()) {
+                return (UUID) rs.getObject("internal_uuid");
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+
+    public static boolean addMemberToGroup(UUID userId, UUID groupUUID) {
+        String sql = """
+        INSERT INTO group_members (group_id, user_id)
+        VALUES (?, ?)
+        ON CONFLICT DO NOTHING
+    """;
+
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+            stmt.setObject(1, groupUUID);
+            stmt.setObject(2, userId);
+            return stmt.executeUpdate() > 0;
+        } catch (SQLException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
 
 }

src/main/java/org/to/telegramfinalproject/Database/MessageDatabase.java

@@ -12,6 +12,41 @@ import java.util.stream.Collectors;
 public class MessageDatabase {
 
 
+    public static void save(Message message) {
+        String sql = """
+        INSERT INTO messages (
+            message_id, sender_id, receiver_type, receiver_id, content,
+            message_type, file_url, send_at, status,
+            reply_to_id, is_edited, original_message_id, forwarded_by, forwarded_from
+        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+    """;
+
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setObject(1, message.getMessage_id());
+            stmt.setObject(2, message.getSender_id());
+            stmt.setString(3, message.getReceiver_type());
+            stmt.setObject(4, message.getReceiver_id());
+            stmt.setString(5, message.getContent());
+            stmt.setString(6, message.getMessage_type());
+            stmt.setString(7, message.getFile_url());
+            stmt.setObject(8, message.getSend_at());
+            stmt.setString(9, message.getStatus());
+            stmt.setObject(10, message.getReply_to_id());
+            stmt.setBoolean(11, message.isIs_edited());
+            stmt.setObject(12, message.getOriginal_message_id());
+            stmt.setObject(13, message.getForwarded_by());
+            stmt.setObject(14, message.getForwarded_from());
+
+            stmt.executeUpdate();
+
+        } catch (SQLException e) {
+            System.err.println("❌ Error saving message: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
     public void markMessageAsRead(UUID messageId, UUID userId) {
         String sql = "INSERT INTO message_receipts (message_id, user_id) VALUES (?, ?) ON CONFLICT DO NOTHING";
         try (Connection conn = ConnectionDb.connect();

src/main/java/org/to/telegramfinalproject/Database/userDatabase.java

@@ -228,7 +228,6 @@ public class userDatabase {
     }
 
 
-
     public static User findByInternalUUID(UUID internalUuid) {
         String sql = "SELECT * FROM users WHERE internal_uuid = ?";
 

src/main/java/org/to/telegramfinalproject/Models/ContactRequestModel.java

@@ -0,0 +1,23 @@
+package org.to.telegramfinalproject.Models;
+
+import org.json.JSONObject;
+
+public class ContactRequestModel {
+    private String event;
+    private String contactId;
+    private String userId;
+
+    public ContactRequestModel(String event, String contactId, String userId) {
+        this.event = event;
+        this.contactId = contactId;
+        this.userId = userId;
+    }
+
+    public JSONObject toJson() {
+        JSONObject json = new JSONObject();
+        json.put("event", event);
+        json.put("contact_id", contactId);
+        json.put("user_id", userId);
+        return json;
+    }
+}

src/main/java/org/to/telegramfinalproject/Models/SearchResultModel.java

@@ -0,0 +1,59 @@
+package org.to.telegramfinalproject.Models;
+
+public class SearchResultModel {
+    private final String type;
+    private final String id;           // ← UUID واقعی برای عملیات
+    private final String displayId;    // ← user_id یا group_id برای نمایش
+    private String name;
+    private final String content;
+    private final String sender;
+    private final String time;
+
+    public SearchResultModel(String type, String id, String displayId,
+                             String content, String sender, String time) {
+        this.type = type;
+        this.id = id;
+        this.displayId = displayId;
+        this.content = content;
+        this.sender = sender;
+        this.time = time;
+    }
+
+    // فقط در صورت نیاز برای user/group/channel
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getDisplayId() {
+        return displayId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public String getSender() {
+        return sender;
+    }
+
+    public String getTime() {
+        return time;
+    }
+
+    @Override
+    public String toString() {
+        return "[" + type.toUpperCase() + "] " + name + " (ID: " + displayId + ")";
+    }
+}

src/main/java/org/to/telegramfinalproject/Server/ClientHandler.java

@@ -69,20 +69,12 @@ public class ClientHandler implements Runnable {
                         } else {
 
                             User user = authService.login(request.getUsername(), request.getPassword());
-
                             if (user == null) {
                                 response = new ResponseModel("error", "Login failed.");
                                 break;
                             }
                             this.currentUser = user;
 
-                            if (SessionManager.contains(user.getInternal_uuid())) {
-                                response = new ResponseModel("error", "You are already logged in from another device.");
-                                break;
-
-                            }
-
-
                             SessionManager.addUser(user.getInternal_uuid(), this.socket);
                             userDatabase.updateUserStatus(user.getInternal_uuid(), "online");
                             List<Contact> contacts = ContactDatabase.getContacts(user.getInternal_uuid());
@@ -126,21 +118,16 @@ public class ClientHandler implements Runnable {
 
                     case "logout": {
                         String user_Id = requestJson.optString("user_id");
-                        if (user_Id != null && !user_Id.isEmpty()) {
+                        if (userId != null && !user_Id.isEmpty()) {
-                            try {
                             UUID uuid = UUID.fromString(user_Id);
                             userDatabase.updateUserStatus(uuid, "offline");
                             userDatabase.updateLastSeen(uuid);
                             SessionManager.removeUser(uuid);
                             response = new ResponseModel("success", "Logged out.");
-                            } catch (IllegalArgumentException ex) {
-                                response = new ResponseModel("error", "Invalid UUID format for user_id.");
-                            }
                         } else {
                             response = new ResponseModel("error", "Invalid user_id for logout.");
                         }
                         break;
-
                     }
 
                     case "search": {
@@ -154,6 +141,7 @@ public class ClientHandler implements Runnable {
                             JSONObject obj = new JSONObject();
                             obj.put("type", "user");
                             obj.put("id", u.getUser_id());
+                            obj.put("uuid", u.getInternal_uuid().toString());  // ✅ اضافه شود
                             obj.put("name", u.getProfile_name());
                             results.add(obj);
                         }
@@ -161,7 +149,8 @@ public class ClientHandler implements Runnable {
                         for (Group g : GroupDatabase.searchGroups(keyword)) {
                             JSONObject obj = new JSONObject();
                             obj.put("type", "group");
-                            obj.put("id", g.getGroup_id());
+                            obj.put("id", g.getGroup_id());              // قابل نمایش
+                            obj.put("uuid", g.getInternal_uuid().toString());  // برای عملیات
                             obj.put("name", g.getGroup_name());
                             results.add(obj);
                         }
@@ -169,7 +158,8 @@ public class ClientHandler implements Runnable {
                         for (Channel c : ChannelDatabase.searchChannels(keyword)) {
                             JSONObject obj = new JSONObject();
                             obj.put("type", "channel");
-                            obj.put("id", c.getChannel_id());
+                            obj.put("id", c.getChannel_id());               // قابل نمایش
+                            obj.put("uuid", c.getInternal_uuid().toString());   // برای عملیات
                             obj.put("name", c.getChannel_name());
                             results.add(obj);
                         }
@@ -224,6 +214,40 @@ public class ClientHandler implements Runnable {
                         break;
                     }
 
+                    case "add_contact": {
+                        UUID userUUID = new userDatabase().findByUserId(requestJson.getString("user_id")).getInternal_uuid();
+                        UUID contactUUID = UUID.fromString(requestJson.getString("contact_id"));
+
+                        boolean success = ContactDatabase.addContact(userUUID, contactUUID);
+                        response = success
+                                ? new ResponseModel("success", "Contact added successfully.")
+                                : new ResponseModel("error", "Failed to add contact. Maybe already exists.");
+                        break;
+                    }
+
+                    case "join_group": {
+                        UUID userUUID = new userDatabase().findByUserId(requestJson.getString("user_id")).getInternal_uuid();
+                        UUID groupUUID = GroupDatabase.findInternalUUIDByGroupId(requestJson.getString("id"));
+
+                        boolean joined = GroupDatabase.addMemberToGroup(userUUID, groupUUID);
+                        response = joined
+                                ? new ResponseModel("success", "Joined group.")
+                                : new ResponseModel("error", "Failed to join group.");
+                        break;
+                    }
+
+                    case "join_channel": {
+                        UUID userUUID = new userDatabase().findByUserId(requestJson.getString("user_id")).getInternal_uuid();
+                        UUID channelUUID = ChannelDatabase.findInternalUUIDByChannelId(requestJson.getString("id"));
+
+                        boolean joined = ChannelDatabase.addSubscriberToChannel(userUUID, channelUUID);
+                        response = joined
+                                ? new ResponseModel("success", "Joined channel.")
+                                : new ResponseModel("error", "Failed to join channel.");
+                        break;
+                    }
+
+
                     default:
                         response = new ResponseModel("error", "Unknown action: " + action);
                 }

src/main/java/org/to/telegramfinalproject/Server/ContactService.java

@@ -0,0 +1,15 @@
+package org.to.telegramfinalproject.Server;
+
+import java.util.UUID;
+import org.to.telegramfinalproject.Database.userDatabase;
+import org.to.telegramfinalproject.Database.ContactDatabase;
+public class ContactService {
+    public static boolean addContact(UUID userId, UUID contactId) {
+        if (userId.equals(contactId)) return false;
+        if (userDatabase.findByInternalUUID(contactId) == null) return false;
+        if (userDatabase.findByInternalUUID(userId) == null) return false;
+        if (ContactDatabase.existsContact(userId, contactId)) return false;
+
+        return ContactDatabase.addContact(userId, contactId);
+    }
+}

src/main/java/org/to/telegramfinalproject/Server/MainServer.java

@@ -7,7 +7,7 @@ import java.net.ServerSocket;
 import java.net.Socket;
 
 public class MainServer {
-    private static final int PORT = 12345;
+    private static final int PORT = 8000;
 
     public static void main(String[] args) {
         try (ServerSocket serverSocket = new ServerSocket(PORT)) {

src/main/java/org/to/telegramfinalproject/Server/RealTimeEventDispatcher.java

@@ -0,0 +1,248 @@
+package org.to.telegramfinalproject.Server;
+
+import org.json.JSONObject;
+import org.to.telegramfinalproject.Database.ChannelDatabase;
+import org.to.telegramfinalproject.Database.GroupDatabase;
+import org.to.telegramfinalproject.Models.Message;
+import org.to.telegramfinalproject.Models.User;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.net.Socket;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+
+public class RealTimeEventDispatcher {
+
+    public static void sendToUser(UUID userId, JSONObject data) {
+        Socket socket = SessionManager.getUserSocket(userId);
+
+       
+        if (socket != null && !socket.isClosed()) {
+            try {
+
+
+                PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
+                out.println(data.toString());
+            } catch (IOException e) {
+                System.err.println("❌ Error sending to user: " + e.getMessage());
+            }
+
+        }
+        else {
+            System.out.println("⚠️ User " + userId + " is offline. Skipping real-time send.");
+
+        }
+    }
+
+    public static void broadcastToUsers(List<UUID> userIds, JSONObject data) {
+        for (UUID userId : userIds) {
+            sendToUser(userId, data);
+        }
+    }
+
+    public static JSONObject buildEvent(String action, JSONObject payload) {
+        JSONObject json = new JSONObject();
+        json.put("action", action);
+        json.put("data", payload);
+        return json;
+    }
+
+
+    public static void notifyNewMessage(Message msg, User sender) {
+        JSONObject data = new JSONObject();
+        data.put("sender", sender.getUser_id());
+        data.put("receiver_type", msg.getReceiver_type());
+        data.put("receiver_id", msg.getReceiver_id());
+        data.put("content", msg.getContent());
+        data.put("time", msg.getSend_at().toString());
+
+        JSONObject event = buildEvent("new_message", data);
+
+        switch (msg.getReceiver_type()) {
+            case "private" -> RealTimeEventDispatcher.sendToUser(msg.getReceiver_id(), event);
+            case "group" -> {
+                List<UUID> memberIds = GroupDatabase.getMemberUUIDs(msg.getReceiver_id());
+                memberIds.remove(sender.getInternal_uuid());
+                RealTimeEventDispatcher.broadcastToUsers(memberIds, event);
+            }
+            case "channel" -> {
+                List<UUID> subscriberIds = ChannelDatabase.getSubscriberUUIDs(msg.getReceiver_id());
+                subscriberIds.remove(sender.getInternal_uuid());
+                subscriberIds.remove(sender.getInternal_uuid());
+                RealTimeEventDispatcher.broadcastToUsers(subscriberIds, event);
+            }
+        }
+    }
+
+
+
+    public static void notifyMessageEdited(UUID messageId, String newContent, List<UUID> receivers) {
+
+        String editTime = LocalDateTime.now().toString();
+        JSONObject data = new JSONObject();
+        data.put("message_id", messageId.toString());
+        data.put("new_content", newContent);
+        data.put("edited_at", editTime);
+
+        JSONObject event = new JSONObject();
+        event.put("action", "edit_message");
+        event.put("data", data);
+
+        broadcastToUsers(receivers, event);
+    }
+
+
+    public static void notifyMessageDeleted(UUID messageId, List<UUID> receivers) {
+        JSONObject data = new JSONObject();
+        data.put("message_id", messageId.toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", "delete_message");
+        event.put("data", data);
+
+        broadcastToUsers(receivers, event);
+    }
+
+    public static void notifyUserUpdated(UUID userId, String newProfileName, String newImageUrl, List<UUID> contactIds) {
+        JSONObject data = new JSONObject();
+        data.put("user_id", userId.toString());
+        data.put("new_name", newProfileName);
+        data.put("new_image_url", newImageUrl);
+
+        JSONObject event = new JSONObject();
+        event.put("action", "update_user");
+        event.put("data", data);
+
+        broadcastToUsers(contactIds, event);
+    }
+
+    public static void notifyChatDeleted(String type, UUID id, List<UUID> affectedUsers) {
+        JSONObject data = new JSONObject();
+        data.put("chat_type", type); // private, group, channel
+        data.put("chat_id", id.toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", "chat_deleted");
+        event.put("data", data);
+
+        broadcastToUsers(affectedUsers, event);
+    }
+
+    public static void notifyGroupOrChannelUpdated(String type, UUID id, String newName, String newImageUrl, List<UUID> affectedUsers) {
+        JSONObject data = new JSONObject();
+        data.put("chat_type", type); // "group" or "channel"
+        data.put("chat_id", id.toString());
+        data.put("new_name", newName);
+        data.put("new_image_url", newImageUrl);
+
+        JSONObject event = new JSONObject();
+        event.put("action", "update_group_or_channel");
+        event.put("data", data);
+
+        broadcastToUsers(affectedUsers, event);
+    }
+
+    public static void notifyMediaMessage(Message msg, User sender) {
+        JSONObject data = new JSONObject();
+        data.put("sender", sender.getUser_id());
+        data.put("receiver_type", msg.getReceiver_type());
+        data.put("receiver_id", msg.getReceiver_id());
+        data.put("file_url", msg.getFile_url());
+        data.put("file_type", msg.getMessage_type()); // IMAGE, FILE, VIDEO...
+        data.put("time", msg.getSend_at().toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", "new_media");
+        event.put("data", data);
+
+        switch (msg.getReceiver_type()) {
+            case "private" -> sendToUser(msg.getReceiver_id(), event);
+            case "group" -> {
+                List<UUID> members = GroupDatabase.getMemberUUIDs(msg.getReceiver_id());
+                members.remove(sender.getInternal_uuid());
+                broadcastToUsers(members, event);
+            }
+            case "channel" -> {
+                List<UUID> subs = ChannelDatabase.getSubscriberUUIDs(msg.getReceiver_id());
+                subs.remove(sender.getInternal_uuid());
+                broadcastToUsers(subs, event);
+            }
+        }
+    }
+
+    public static void notifyAddedToChat(String type, UUID chatId, String chatName, String imageUrl, UUID userId) {
+        JSONObject data = new JSONObject();
+        data.put("chat_type", type); // group یا channel
+        data.put("chat_id", chatId.toString());
+        data.put("chat_name", chatName);
+        data.put("image_url", imageUrl);
+
+        JSONObject event = new JSONObject();
+        event.put("action", type.equals("group") ? "added_to_group" : "added_to_channel");
+        event.put("data", data);
+
+        sendToUser(userId, event);
+    }
+
+    public static void notifyRemovedFromChat(String type, UUID chatId, UUID userId) {
+        JSONObject data = new JSONObject();
+        data.put("chat_type", type);
+        data.put("chat_id", chatId.toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", type.equals("group") ? "removed_from_group" : "removed_from_channel");
+        event.put("data", data);
+
+        sendToUser(userId, event);
+    }
+    public static void notifyMessageSeen(UUID messageId, UUID senderId) {
+        JSONObject data = new JSONObject();
+        data.put("message_id", messageId.toString());
+        data.put("seen_at", LocalDateTime.now().toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", "message_seen");
+        event.put("data", data);
+
+        sendToUser(senderId, event);
+    }
+
+
+    public static void notifyBlocked(UUID blockerId, UUID blockedUserId) {
+        JSONObject data = new JSONObject();
+        data.put("blocker_id", blockerId.toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", "blocked_by_user");
+        event.put("data", data);
+
+        sendToUser(blockedUserId, event);
+    }
+
+
+    public static void notifyUnblocked(UUID unblockerId, UUID unblockedUserId) {
+        JSONObject data = new JSONObject();
+        data.put("unblocker_id", unblockerId.toString());
+
+        JSONObject event = new JSONObject();
+        event.put("action", "unblocked_by_user");
+        event.put("data", data);
+
+        sendToUser(unblockedUserId, event);
+    }
+
+    public static void notifyUserStatusChanged(UUID userId, String status, List<UUID> contacts) {
+        JSONObject data = new JSONObject();
+        data.put("user_id", userId.toString());
+        data.put("status", status); // online | offline
+        data.put("time", LocalDateTime.now().toString());
+
+        JSONObject event = buildEvent("user_status_changed", data);
+
+        broadcastToUsers(contacts, event);
+    }
+
+
+}

src/main/resources/org/to/telegramfinalproject/Contact_Cell.fxml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.image.Image?>
+<?import javafx.scene.image.ImageView?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.VBox?>
+
+<HBox xmlns="http://javafx.com/javafx"
+      xmlns:fx="http://javafx.com/fxml"
+      fx:controller="org.to.telegramfinalproject.ContactCell"
+      spacing="10.0" alignment="CENTER_LEFT"
+      prefHeight="60.0" style="-fx-padding: 10;">
+
+    <ImageView fx:id="profileImage" fitHeight="40.0" fitWidth="40.0" preserveRatio="true">
+        <image>
+            <Image url="@/Icons/default_user.png" />
+        </image>
+    </ImageView>
+
+    <VBox spacing="4.0">
+        <Label fx:id="nameLabel" text="profile_name"
+               style="-fx-font-size: 14px; -fx-font-weight: bold;" />
+        <Label fx:id="statusLabel" text="● Online"
+               style="-fx-font-size: 12px; -fx-text-fill: green;" />
+    </VBox>
+</HBox>

src/main/resources/org/to/telegramfinalproject/MainPage.fxml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.image.*?>
+<?import javafx.scene.text.*?>
+<?import java.lang.*?>
+<?import java.util.*?>
+<?import javafx.scene.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<ScrollPane prefHeight="983.0" prefWidth="859.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.to.telegramfinalproject.MainPage">
+   <content>
+      <AnchorPane prefHeight="977.0" prefWidth="845.0">
+         <children>
+            <AnchorPane layoutX="7.0" layoutY="-8.0" prefHeight="977.0" prefWidth="845.0">
+               <children>
+                  <Label layoutX="-7.0" layoutY="-6.0" prefHeight="78.0" prefWidth="859.0" style="-fx-background-color: #1882da;" text="          Telegram" textFill="WHITE">
+                     <font>
+                        <Font name="Arial Bold" size="36.0" />
+                     </font>
+                  </Label>
+                  <Button contentDisplay="GRAPHIC_ONLY" layoutX="6.0" layoutY="10.0" mnemonicParsing="false" style="-fx-background-color: #1882da;">
+                     <graphic>
+                        <ImageView fitHeight="39.0" fitWidth="63.0" pickOnBounds="true" preserveRatio="true">
+                           <image>
+                              <Image url="@../../../Icons/menu.png" />
+                           </image>
+                        </ImageView>
+                     </graphic>
+                  </Button>
+                  <Button contentDisplay="GRAPHIC_ONLY" layoutX="703.0" layoutY="9.0" mnemonicParsing="false" prefHeight="54.0" prefWidth="135.0" style="-fx-background-color: #1882da;" text="" textFill="#d6d6d6">
+                     <graphic>
+                        <ImageView fitHeight="47.0" fitWidth="54.0" pickOnBounds="true" preserveRatio="true">
+                           <image>
+                              <Image url="@../../../Icons/search.png" />
+                           </image>
+                        </ImageView>
+                     </graphic>
+                  </Button>
+                  <Button contentDisplay="GRAPHIC_ONLY" layoutX="547.0" mnemonicParsing="false" prefHeight="66.0" prefWidth="114.0" style="-fx-background-color: #1882da;" text="" />
+                  <ImageView fitHeight="50.0" fitWidth="110.0" layoutX="586.0" layoutY="14.0" pickOnBounds="true" preserveRatio="true">
+                     <image>
+                        <Image url="@../../../Icons/time.png" />
+                     </image>
+                  </ImageView>
+                  <ListView fx:id="contactListView" layoutX="1.0" layoutY="73.0" prefHeight="907.0" prefWidth="851.0" />
+               </children>
+            </AnchorPane>
+         </children>
+      </AnchorPane>
+   </content>
+</ScrollPane>

src/main/resources/org/to/telegramfinalproject/Searching_view.fxml

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.image.*?>
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.text.Font?>
+
+<AnchorPane prefHeight="800.0" prefWidth="802.0"
+            xmlns="http://javafx.com/javafx/8"
+            xmlns:fx="http://javafx.com/fxml/1"
+            fx:controller="org.to.telegramfinalproject.SearchingView">
+
+    <children>
+
+        <StackPane alignment="CENTER_LEFT" layoutX="0" layoutY="0" prefHeight="90.0" prefWidth="802.0">
+            <children>
+
+                <Label prefHeight="90.0" prefWidth="802.0"
+                       style="-fx-background-color: #1882da;"
+                       text="   Search" textFill="#c9c9c9">
+                    <font>
+                        <Font name="System Bold" size="24.0" />
+                    </font>
+                </Label>
+
+                <HBox spacing="5.0" alignment="CENTER_LEFT">
+                    <StackPane.margin>
+                        <Insets left="100.0" />
+                    </StackPane.margin>
+
+                    <TextField fx:id="searchField"
+                               promptText="Search..."
+                               prefHeight="40.0" prefWidth="250.0"
+                               style="-fx-background-color: #ffffff; -fx-background-radius: 20; -fx-border-radius: 20; -fx-border-color: transparent; -fx-font-size: 14;" />
+
+                    <Button fx:id="searchButton"
+                            contentDisplay="GRAPHIC_ONLY"
+                            prefWidth="32.0" prefHeight="32.0"
+                            style="-fx-background-color: #ffffff; -fx-background-radius: 50; -fx-border-color: transparent;">
+                        <graphic>
+                            <ImageView fitHeight="16.0" fitWidth="16.0" preserveRatio="true">
+                                <image>
+                                    <Image url="@/Icons/search.png" />
+                                </image>
+                            </ImageView>
+                        </graphic>
+                    </Button>
+
+                    <Button fx:id="exitButton"
+                            contentDisplay="GRAPHIC_ONLY"
+                            prefWidth="32.0" prefHeight="32.0"
+                            style="-fx-background-color: #ffffff; -fx-background-radius: 50; -fx-border-color: transparent;">
+                        <graphic>
+                            <ImageView fitHeight="16.0" fitWidth="16.0" preserveRatio="true">
+                                <image>
+                                    <Image url="@/Icons/remove.png" />
+                                </image>
+                            </ImageView>
+                        </graphic>
+                    </Button>
+                </HBox>
+
+            </children>
+        </StackPane>
+
+    </children>
+</AnchorPane>