add chat system

UI_V2/dbActions/users.py

@@ -119,6 +119,29 @@ class Users:
                 }
             return None
         
+    def get_user_by_role(self, role: str) -> Optional[dict]:
+        """Retrieve user details by username."""
+        with sqlite3.connect(self.db_path) as conn:
+            cursor = conn.cursor()
+            cursor.execute("""
+                SELECT * FROM users 
+                WHERE role = ?
+            """, (role,))
+            row = cursor.fetchone()
+            if row:
+                return {
+                    "id": row[0], 
+                    "email": row[1], 
+                    "token": row[3],
+                    "name":row[4],
+                    "phone": row[5],
+                    "address": row[6],
+                    "created_at": row[7],
+                    "status": row[8],
+                    "role":row[9]
+                }
+            return None
+        
     def get(self, id: int) -> Optional[dict]:
         """Retrieve user details by username."""
         with sqlite3.connect(self.db_path) as conn: