fix open private chats

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

@@ -13,6 +13,7 @@ public class ChatEntry {
     private String type;
     private LocalDateTime lastMessageTime;
     private boolean archived = false;
+    private UUID otherUser;
 
 
     private boolean isOwner = false;
@@ -133,4 +134,10 @@ public class ChatEntry {
         }
     }
 
+    public void setOtherUserId(UUID otherId) {this.otherUser =  otherId;
+    }
+
+    public UUID getOtherUserId(){
+        return otherUser;
+    }
 }

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

@@ -0,0 +1,44 @@
+package org.to.telegramfinalproject.Models;
+
+import java.util.UUID;
+
+public class ContactEntry {
+    private UUID contactId;        // internal UUID
+    private String userId;         // public ID
+    private String profileName;
+    private String imageUrl;
+    private boolean isBlocked;
+
+    public ContactEntry(UUID contactId, String userId, String profileName, String imageUrl, boolean isBlocked) {
+        this.contactId = contactId;
+        this.userId = userId;
+        this.profileName = profileName;
+        this.imageUrl = imageUrl;
+        this.isBlocked = isBlocked;
+    }
+
+    public UUID getContactId() {
+        return contactId;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public String getProfileName() {
+        return profileName;
+    }
+
+    public String getImageUrl() {
+        return imageUrl;
+    }
+
+    public boolean isBlocked() {
+        return isBlocked;
+    }
+
+    @Override
+    public String toString() {
+        return profileName + " (" + userId + ")" + (isBlocked ? " [Blocked]" : "");
+    }
+}

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

@@ -9,7 +9,7 @@ public class PrivateChat {
     private UUID user2_id;
     private LocalDateTime created_at;
 
-    public PrivateChat(UUID chat_id, UUID user1_id, UUID user2_id, LocalDateTime created_at){
+    public PrivateChat(UUID chat_id, UUID user1_id, UUID user2_id){
         this.chat_id = chat_id;
         this.user1_id =user1_id;
         this.user2_id =user2_id;